![Steve Wise](/assets/img/avatar_default.png)
Function rx_data(), which handles ingress CPL_RX_DATA messages, was always sending an RX_DATA_ACK with the goal of updating the credits. However, if the RDMA connection is moved out of FPDU mode abruptly, then it is possible for iw_cxgb4 to process queued RX_DATA CPLs after HW has aborted the connection. These CPLs should not trigger RX_DATA_ACKS. If they do, HW can see a READ after DELETE of the DB_LE hash entry for the tid and post a LE_DB HashTblMemCrcError. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
4252 lines
114 KiB
C
4252 lines
114 KiB
C
/*
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* Copyright (c) 2009-2014 Chelsio, Inc. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <linux/module.h>
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#include <linux/list.h>
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#include <linux/workqueue.h>
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#include <linux/skbuff.h>
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#include <linux/timer.h>
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#include <linux/notifier.h>
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#include <linux/inetdevice.h>
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#include <linux/ip.h>
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#include <linux/tcp.h>
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#include <linux/if_vlan.h>
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#include <net/neighbour.h>
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#include <net/netevent.h>
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#include <net/route.h>
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#include <net/tcp.h>
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#include <net/ip6_route.h>
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#include <net/addrconf.h>
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#include <rdma/ib_addr.h>
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#include <libcxgb_cm.h>
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#include "iw_cxgb4.h"
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#include "clip_tbl.h"
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static char *states[] = {
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"idle",
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"listen",
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"connecting",
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"mpa_wait_req",
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"mpa_req_sent",
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"mpa_req_rcvd",
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"mpa_rep_sent",
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"fpdu_mode",
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"aborting",
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"closing",
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"moribund",
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"dead",
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NULL,
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};
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static int nocong;
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module_param(nocong, int, 0644);
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MODULE_PARM_DESC(nocong, "Turn of congestion control (default=0)");
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static int enable_ecn;
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module_param(enable_ecn, int, 0644);
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MODULE_PARM_DESC(enable_ecn, "Enable ECN (default=0/disabled)");
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static int dack_mode = 1;
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module_param(dack_mode, int, 0644);
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MODULE_PARM_DESC(dack_mode, "Delayed ack mode (default=1)");
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uint c4iw_max_read_depth = 32;
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module_param(c4iw_max_read_depth, int, 0644);
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MODULE_PARM_DESC(c4iw_max_read_depth,
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"Per-connection max ORD/IRD (default=32)");
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static int enable_tcp_timestamps;
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module_param(enable_tcp_timestamps, int, 0644);
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MODULE_PARM_DESC(enable_tcp_timestamps, "Enable tcp timestamps (default=0)");
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static int enable_tcp_sack;
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module_param(enable_tcp_sack, int, 0644);
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MODULE_PARM_DESC(enable_tcp_sack, "Enable tcp SACK (default=0)");
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static int enable_tcp_window_scaling = 1;
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module_param(enable_tcp_window_scaling, int, 0644);
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MODULE_PARM_DESC(enable_tcp_window_scaling,
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"Enable tcp window scaling (default=1)");
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int c4iw_debug;
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module_param(c4iw_debug, int, 0644);
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MODULE_PARM_DESC(c4iw_debug, "Enable debug logging (default=0)");
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static int peer2peer = 1;
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module_param(peer2peer, int, 0644);
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MODULE_PARM_DESC(peer2peer, "Support peer2peer ULPs (default=1)");
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static int p2p_type = FW_RI_INIT_P2PTYPE_READ_REQ;
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module_param(p2p_type, int, 0644);
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MODULE_PARM_DESC(p2p_type, "RDMAP opcode to use for the RTR message: "
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"1=RDMA_READ 0=RDMA_WRITE (default 1)");
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static int ep_timeout_secs = 60;
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module_param(ep_timeout_secs, int, 0644);
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MODULE_PARM_DESC(ep_timeout_secs, "CM Endpoint operation timeout "
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"in seconds (default=60)");
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static int mpa_rev = 2;
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module_param(mpa_rev, int, 0644);
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MODULE_PARM_DESC(mpa_rev, "MPA Revision, 0 supports amso1100, "
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"1 is RFC5044 spec compliant, 2 is IETF MPA Peer Connect Draft"
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" compliant (default=2)");
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static int markers_enabled;
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module_param(markers_enabled, int, 0644);
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MODULE_PARM_DESC(markers_enabled, "Enable MPA MARKERS (default(0)=disabled)");
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static int crc_enabled = 1;
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module_param(crc_enabled, int, 0644);
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MODULE_PARM_DESC(crc_enabled, "Enable MPA CRC (default(1)=enabled)");
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static int rcv_win = 256 * 1024;
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module_param(rcv_win, int, 0644);
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MODULE_PARM_DESC(rcv_win, "TCP receive window in bytes (default=256KB)");
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static int snd_win = 128 * 1024;
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module_param(snd_win, int, 0644);
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MODULE_PARM_DESC(snd_win, "TCP send window in bytes (default=128KB)");
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static struct workqueue_struct *workq;
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static struct sk_buff_head rxq;
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static struct sk_buff *get_skb(struct sk_buff *skb, int len, gfp_t gfp);
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static void ep_timeout(unsigned long arg);
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static void connect_reply_upcall(struct c4iw_ep *ep, int status);
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static int sched(struct c4iw_dev *dev, struct sk_buff *skb);
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static LIST_HEAD(timeout_list);
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static spinlock_t timeout_lock;
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static void deref_cm_id(struct c4iw_ep_common *epc)
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{
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epc->cm_id->rem_ref(epc->cm_id);
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epc->cm_id = NULL;
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set_bit(CM_ID_DEREFED, &epc->history);
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}
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static void ref_cm_id(struct c4iw_ep_common *epc)
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{
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set_bit(CM_ID_REFED, &epc->history);
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epc->cm_id->add_ref(epc->cm_id);
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}
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static void deref_qp(struct c4iw_ep *ep)
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{
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c4iw_qp_rem_ref(&ep->com.qp->ibqp);
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clear_bit(QP_REFERENCED, &ep->com.flags);
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set_bit(QP_DEREFED, &ep->com.history);
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}
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static void ref_qp(struct c4iw_ep *ep)
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{
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set_bit(QP_REFERENCED, &ep->com.flags);
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set_bit(QP_REFED, &ep->com.history);
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c4iw_qp_add_ref(&ep->com.qp->ibqp);
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}
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static void start_ep_timer(struct c4iw_ep *ep)
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{
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PDBG("%s ep %p\n", __func__, ep);
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if (timer_pending(&ep->timer)) {
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pr_err("%s timer already started! ep %p\n",
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__func__, ep);
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return;
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}
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clear_bit(TIMEOUT, &ep->com.flags);
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c4iw_get_ep(&ep->com);
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ep->timer.expires = jiffies + ep_timeout_secs * HZ;
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ep->timer.data = (unsigned long)ep;
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ep->timer.function = ep_timeout;
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add_timer(&ep->timer);
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}
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static int stop_ep_timer(struct c4iw_ep *ep)
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{
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PDBG("%s ep %p stopping\n", __func__, ep);
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del_timer_sync(&ep->timer);
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if (!test_and_set_bit(TIMEOUT, &ep->com.flags)) {
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c4iw_put_ep(&ep->com);
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return 0;
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}
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return 1;
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}
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static int c4iw_l2t_send(struct c4iw_rdev *rdev, struct sk_buff *skb,
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struct l2t_entry *l2e)
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{
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int error = 0;
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if (c4iw_fatal_error(rdev)) {
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kfree_skb(skb);
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PDBG("%s - device in error state - dropping\n", __func__);
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return -EIO;
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}
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error = cxgb4_l2t_send(rdev->lldi.ports[0], skb, l2e);
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if (error < 0)
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kfree_skb(skb);
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else if (error == NET_XMIT_DROP)
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return -ENOMEM;
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return error < 0 ? error : 0;
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}
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int c4iw_ofld_send(struct c4iw_rdev *rdev, struct sk_buff *skb)
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{
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int error = 0;
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if (c4iw_fatal_error(rdev)) {
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kfree_skb(skb);
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PDBG("%s - device in error state - dropping\n", __func__);
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return -EIO;
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}
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error = cxgb4_ofld_send(rdev->lldi.ports[0], skb);
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if (error < 0)
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kfree_skb(skb);
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return error < 0 ? error : 0;
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}
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static void release_tid(struct c4iw_rdev *rdev, u32 hwtid, struct sk_buff *skb)
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{
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u32 len = roundup(sizeof(struct cpl_tid_release), 16);
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skb = get_skb(skb, len, GFP_KERNEL);
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if (!skb)
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return;
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cxgb_mk_tid_release(skb, len, hwtid, 0);
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c4iw_ofld_send(rdev, skb);
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return;
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}
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static void set_emss(struct c4iw_ep *ep, u16 opt)
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{
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ep->emss = ep->com.dev->rdev.lldi.mtus[TCPOPT_MSS_G(opt)] -
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((AF_INET == ep->com.remote_addr.ss_family) ?
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sizeof(struct iphdr) : sizeof(struct ipv6hdr)) -
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sizeof(struct tcphdr);
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ep->mss = ep->emss;
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if (TCPOPT_TSTAMP_G(opt))
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ep->emss -= round_up(TCPOLEN_TIMESTAMP, 4);
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if (ep->emss < 128)
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ep->emss = 128;
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if (ep->emss & 7)
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PDBG("Warning: misaligned mtu idx %u mss %u emss=%u\n",
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TCPOPT_MSS_G(opt), ep->mss, ep->emss);
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PDBG("%s mss_idx %u mss %u emss=%u\n", __func__, TCPOPT_MSS_G(opt),
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ep->mss, ep->emss);
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}
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static enum c4iw_ep_state state_read(struct c4iw_ep_common *epc)
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{
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enum c4iw_ep_state state;
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mutex_lock(&epc->mutex);
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state = epc->state;
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mutex_unlock(&epc->mutex);
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return state;
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}
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static void __state_set(struct c4iw_ep_common *epc, enum c4iw_ep_state new)
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{
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epc->state = new;
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}
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static void state_set(struct c4iw_ep_common *epc, enum c4iw_ep_state new)
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{
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mutex_lock(&epc->mutex);
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PDBG("%s - %s -> %s\n", __func__, states[epc->state], states[new]);
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__state_set(epc, new);
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mutex_unlock(&epc->mutex);
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return;
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}
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static int alloc_ep_skb_list(struct sk_buff_head *ep_skb_list, int size)
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{
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struct sk_buff *skb;
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unsigned int i;
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size_t len;
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len = roundup(sizeof(union cpl_wr_size), 16);
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for (i = 0; i < size; i++) {
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skb = alloc_skb(len, GFP_KERNEL);
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if (!skb)
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goto fail;
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skb_queue_tail(ep_skb_list, skb);
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}
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return 0;
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fail:
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skb_queue_purge(ep_skb_list);
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return -ENOMEM;
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}
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static void *alloc_ep(int size, gfp_t gfp)
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{
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struct c4iw_ep_common *epc;
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epc = kzalloc(size, gfp);
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if (epc) {
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kref_init(&epc->kref);
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mutex_init(&epc->mutex);
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c4iw_init_wr_wait(&epc->wr_wait);
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}
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PDBG("%s alloc ep %p\n", __func__, epc);
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return epc;
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}
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static void remove_ep_tid(struct c4iw_ep *ep)
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{
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unsigned long flags;
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spin_lock_irqsave(&ep->com.dev->lock, flags);
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_remove_handle(ep->com.dev, &ep->com.dev->hwtid_idr, ep->hwtid, 0);
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if (idr_is_empty(&ep->com.dev->hwtid_idr))
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wake_up(&ep->com.dev->wait);
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spin_unlock_irqrestore(&ep->com.dev->lock, flags);
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}
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static void insert_ep_tid(struct c4iw_ep *ep)
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{
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unsigned long flags;
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spin_lock_irqsave(&ep->com.dev->lock, flags);
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_insert_handle(ep->com.dev, &ep->com.dev->hwtid_idr, ep, ep->hwtid, 0);
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spin_unlock_irqrestore(&ep->com.dev->lock, flags);
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}
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/*
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* Atomically lookup the ep ptr given the tid and grab a reference on the ep.
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*/
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static struct c4iw_ep *get_ep_from_tid(struct c4iw_dev *dev, unsigned int tid)
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{
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struct c4iw_ep *ep;
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unsigned long flags;
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spin_lock_irqsave(&dev->lock, flags);
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ep = idr_find(&dev->hwtid_idr, tid);
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if (ep)
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c4iw_get_ep(&ep->com);
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spin_unlock_irqrestore(&dev->lock, flags);
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return ep;
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}
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/*
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* Atomically lookup the ep ptr given the stid and grab a reference on the ep.
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*/
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static struct c4iw_listen_ep *get_ep_from_stid(struct c4iw_dev *dev,
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unsigned int stid)
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{
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struct c4iw_listen_ep *ep;
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unsigned long flags;
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spin_lock_irqsave(&dev->lock, flags);
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ep = idr_find(&dev->stid_idr, stid);
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if (ep)
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c4iw_get_ep(&ep->com);
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spin_unlock_irqrestore(&dev->lock, flags);
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return ep;
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}
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void _c4iw_free_ep(struct kref *kref)
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{
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struct c4iw_ep *ep;
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ep = container_of(kref, struct c4iw_ep, com.kref);
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PDBG("%s ep %p state %s\n", __func__, ep, states[ep->com.state]);
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if (test_bit(QP_REFERENCED, &ep->com.flags))
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deref_qp(ep);
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if (test_bit(RELEASE_RESOURCES, &ep->com.flags)) {
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if (ep->com.remote_addr.ss_family == AF_INET6) {
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struct sockaddr_in6 *sin6 =
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(struct sockaddr_in6 *)
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&ep->com.local_addr;
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cxgb4_clip_release(
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ep->com.dev->rdev.lldi.ports[0],
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(const u32 *)&sin6->sin6_addr.s6_addr,
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1);
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}
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cxgb4_remove_tid(ep->com.dev->rdev.lldi.tids, 0, ep->hwtid);
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dst_release(ep->dst);
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cxgb4_l2t_release(ep->l2t);
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if (ep->mpa_skb)
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kfree_skb(ep->mpa_skb);
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}
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if (!skb_queue_empty(&ep->com.ep_skb_list))
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skb_queue_purge(&ep->com.ep_skb_list);
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kfree(ep);
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}
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static void release_ep_resources(struct c4iw_ep *ep)
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{
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set_bit(RELEASE_RESOURCES, &ep->com.flags);
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|
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/*
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* If we have a hwtid, then remove it from the idr table
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* so lookups will no longer find this endpoint. Otherwise
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* we have a race where one thread finds the ep ptr just
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* before the other thread is freeing the ep memory.
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*/
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if (ep->hwtid != -1)
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remove_ep_tid(ep);
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c4iw_put_ep(&ep->com);
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}
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|
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static int status2errno(int status)
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{
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switch (status) {
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case CPL_ERR_NONE:
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return 0;
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case CPL_ERR_CONN_RESET:
|
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return -ECONNRESET;
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case CPL_ERR_ARP_MISS:
|
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return -EHOSTUNREACH;
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case CPL_ERR_CONN_TIMEDOUT:
|
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return -ETIMEDOUT;
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case CPL_ERR_TCAM_FULL:
|
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return -ENOMEM;
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case CPL_ERR_CONN_EXIST:
|
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return -EADDRINUSE;
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default:
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return -EIO;
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}
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}
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|
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/*
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* Try and reuse skbs already allocated...
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*/
|
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static struct sk_buff *get_skb(struct sk_buff *skb, int len, gfp_t gfp)
|
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{
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if (skb && !skb_is_nonlinear(skb) && !skb_cloned(skb)) {
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skb_trim(skb, 0);
|
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skb_get(skb);
|
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skb_reset_transport_header(skb);
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} else {
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skb = alloc_skb(len, gfp);
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}
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t4_set_arp_err_handler(skb, NULL, NULL);
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return skb;
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}
|
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|
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static struct net_device *get_real_dev(struct net_device *egress_dev)
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{
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return rdma_vlan_dev_real_dev(egress_dev) ? : egress_dev;
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}
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|
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static void arp_failure_discard(void *handle, struct sk_buff *skb)
|
|
{
|
|
pr_err(MOD "ARP failure\n");
|
|
kfree_skb(skb);
|
|
}
|
|
|
|
static void mpa_start_arp_failure(void *handle, struct sk_buff *skb)
|
|
{
|
|
pr_err("ARP failure during MPA Negotiation - Closing Connection\n");
|
|
}
|
|
|
|
enum {
|
|
NUM_FAKE_CPLS = 2,
|
|
FAKE_CPL_PUT_EP_SAFE = NUM_CPL_CMDS + 0,
|
|
FAKE_CPL_PASS_PUT_EP_SAFE = NUM_CPL_CMDS + 1,
|
|
};
|
|
|
|
static int _put_ep_safe(struct c4iw_dev *dev, struct sk_buff *skb)
|
|
{
|
|
struct c4iw_ep *ep;
|
|
|
|
ep = *((struct c4iw_ep **)(skb->cb + 2 * sizeof(void *)));
|
|
release_ep_resources(ep);
|
|
return 0;
|
|
}
|
|
|
|
static int _put_pass_ep_safe(struct c4iw_dev *dev, struct sk_buff *skb)
|
|
{
|
|
struct c4iw_ep *ep;
|
|
|
|
ep = *((struct c4iw_ep **)(skb->cb + 2 * sizeof(void *)));
|
|
c4iw_put_ep(&ep->parent_ep->com);
|
|
release_ep_resources(ep);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Fake up a special CPL opcode and call sched() so process_work() will call
|
|
* _put_ep_safe() in a safe context to free the ep resources. This is needed
|
|
* because ARP error handlers are called in an ATOMIC context, and
|
|
* _c4iw_free_ep() needs to block.
|
|
*/
|
|
static void queue_arp_failure_cpl(struct c4iw_ep *ep, struct sk_buff *skb,
|
|
int cpl)
|
|
{
|
|
struct cpl_act_establish *rpl = cplhdr(skb);
|
|
|
|
/* Set our special ARP_FAILURE opcode */
|
|
rpl->ot.opcode = cpl;
|
|
|
|
/*
|
|
* Save ep in the skb->cb area, after where sched() will save the dev
|
|
* ptr.
|
|
*/
|
|
*((struct c4iw_ep **)(skb->cb + 2 * sizeof(void *))) = ep;
|
|
sched(ep->com.dev, skb);
|
|
}
|
|
|
|
/* Handle an ARP failure for an accept */
|
|
static void pass_accept_rpl_arp_failure(void *handle, struct sk_buff *skb)
|
|
{
|
|
struct c4iw_ep *ep = handle;
|
|
|
|
pr_err(MOD "ARP failure during accept - tid %u -dropping connection\n",
|
|
ep->hwtid);
|
|
|
|
__state_set(&ep->com, DEAD);
|
|
queue_arp_failure_cpl(ep, skb, FAKE_CPL_PASS_PUT_EP_SAFE);
|
|
}
|
|
|
|
/*
|
|
* Handle an ARP failure for an active open.
|
|
*/
|
|
static void act_open_req_arp_failure(void *handle, struct sk_buff *skb)
|
|
{
|
|
struct c4iw_ep *ep = handle;
|
|
|
|
printk(KERN_ERR MOD "ARP failure during connect\n");
|
|
connect_reply_upcall(ep, -EHOSTUNREACH);
|
|
__state_set(&ep->com, DEAD);
|
|
if (ep->com.remote_addr.ss_family == AF_INET6) {
|
|
struct sockaddr_in6 *sin6 =
|
|
(struct sockaddr_in6 *)&ep->com.local_addr;
|
|
cxgb4_clip_release(ep->com.dev->rdev.lldi.ports[0],
|
|
(const u32 *)&sin6->sin6_addr.s6_addr, 1);
|
|
}
|
|
remove_handle(ep->com.dev, &ep->com.dev->atid_idr, ep->atid);
|
|
cxgb4_free_atid(ep->com.dev->rdev.lldi.tids, ep->atid);
|
|
queue_arp_failure_cpl(ep, skb, FAKE_CPL_PUT_EP_SAFE);
|
|
}
|
|
|
|
/*
|
|
* Handle an ARP failure for a CPL_ABORT_REQ. Change it into a no RST variant
|
|
* and send it along.
|
|
*/
|
|
static void abort_arp_failure(void *handle, struct sk_buff *skb)
|
|
{
|
|
int ret;
|
|
struct c4iw_ep *ep = handle;
|
|
struct c4iw_rdev *rdev = &ep->com.dev->rdev;
|
|
struct cpl_abort_req *req = cplhdr(skb);
|
|
|
|
PDBG("%s rdev %p\n", __func__, rdev);
|
|
req->cmd = CPL_ABORT_NO_RST;
|
|
ret = c4iw_ofld_send(rdev, skb);
|
|
if (ret) {
|
|
__state_set(&ep->com, DEAD);
|
|
queue_arp_failure_cpl(ep, skb, FAKE_CPL_PUT_EP_SAFE);
|
|
}
|
|
}
|
|
|
|
static int send_flowc(struct c4iw_ep *ep)
|
|
{
|
|
struct fw_flowc_wr *flowc;
|
|
struct sk_buff *skb = skb_dequeue(&ep->com.ep_skb_list);
|
|
int i;
|
|
u16 vlan = ep->l2t->vlan;
|
|
int nparams;
|
|
|
|
if (WARN_ON(!skb))
|
|
return -ENOMEM;
|
|
|
|
if (vlan == CPL_L2T_VLAN_NONE)
|
|
nparams = 8;
|
|
else
|
|
nparams = 9;
|
|
|
|
flowc = (struct fw_flowc_wr *)__skb_put(skb, FLOWC_LEN);
|
|
|
|
flowc->op_to_nparams = cpu_to_be32(FW_WR_OP_V(FW_FLOWC_WR) |
|
|
FW_FLOWC_WR_NPARAMS_V(nparams));
|
|
flowc->flowid_len16 = cpu_to_be32(FW_WR_LEN16_V(DIV_ROUND_UP(FLOWC_LEN,
|
|
16)) | FW_WR_FLOWID_V(ep->hwtid));
|
|
|
|
flowc->mnemval[0].mnemonic = FW_FLOWC_MNEM_PFNVFN;
|
|
flowc->mnemval[0].val = cpu_to_be32(FW_PFVF_CMD_PFN_V
|
|
(ep->com.dev->rdev.lldi.pf));
|
|
flowc->mnemval[1].mnemonic = FW_FLOWC_MNEM_CH;
|
|
flowc->mnemval[1].val = cpu_to_be32(ep->tx_chan);
|
|
flowc->mnemval[2].mnemonic = FW_FLOWC_MNEM_PORT;
|
|
flowc->mnemval[2].val = cpu_to_be32(ep->tx_chan);
|
|
flowc->mnemval[3].mnemonic = FW_FLOWC_MNEM_IQID;
|
|
flowc->mnemval[3].val = cpu_to_be32(ep->rss_qid);
|
|
flowc->mnemval[4].mnemonic = FW_FLOWC_MNEM_SNDNXT;
|
|
flowc->mnemval[4].val = cpu_to_be32(ep->snd_seq);
|
|
flowc->mnemval[5].mnemonic = FW_FLOWC_MNEM_RCVNXT;
|
|
flowc->mnemval[5].val = cpu_to_be32(ep->rcv_seq);
|
|
flowc->mnemval[6].mnemonic = FW_FLOWC_MNEM_SNDBUF;
|
|
flowc->mnemval[6].val = cpu_to_be32(ep->snd_win);
|
|
flowc->mnemval[7].mnemonic = FW_FLOWC_MNEM_MSS;
|
|
flowc->mnemval[7].val = cpu_to_be32(ep->emss);
|
|
if (nparams == 9) {
|
|
u16 pri;
|
|
|
|
pri = (vlan & VLAN_PRIO_MASK) >> VLAN_PRIO_SHIFT;
|
|
flowc->mnemval[8].mnemonic = FW_FLOWC_MNEM_SCHEDCLASS;
|
|
flowc->mnemval[8].val = cpu_to_be32(pri);
|
|
} else {
|
|
/* Pad WR to 16 byte boundary */
|
|
flowc->mnemval[8].mnemonic = 0;
|
|
flowc->mnemval[8].val = 0;
|
|
}
|
|
for (i = 0; i < 9; i++) {
|
|
flowc->mnemval[i].r4[0] = 0;
|
|
flowc->mnemval[i].r4[1] = 0;
|
|
flowc->mnemval[i].r4[2] = 0;
|
|
}
|
|
|
|
set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx);
|
|
return c4iw_ofld_send(&ep->com.dev->rdev, skb);
|
|
}
|
|
|
|
static int send_halfclose(struct c4iw_ep *ep)
|
|
{
|
|
struct sk_buff *skb = skb_dequeue(&ep->com.ep_skb_list);
|
|
u32 wrlen = roundup(sizeof(struct cpl_close_con_req), 16);
|
|
|
|
PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
|
|
if (WARN_ON(!skb))
|
|
return -ENOMEM;
|
|
|
|
cxgb_mk_close_con_req(skb, wrlen, ep->hwtid, ep->txq_idx,
|
|
NULL, arp_failure_discard);
|
|
|
|
return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t);
|
|
}
|
|
|
|
static int send_abort(struct c4iw_ep *ep)
|
|
{
|
|
u32 wrlen = roundup(sizeof(struct cpl_abort_req), 16);
|
|
struct sk_buff *req_skb = skb_dequeue(&ep->com.ep_skb_list);
|
|
|
|
PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
|
|
if (WARN_ON(!req_skb))
|
|
return -ENOMEM;
|
|
|
|
cxgb_mk_abort_req(req_skb, wrlen, ep->hwtid, ep->txq_idx,
|
|
ep, abort_arp_failure);
|
|
|
|
return c4iw_l2t_send(&ep->com.dev->rdev, req_skb, ep->l2t);
|
|
}
|
|
|
|
static int send_connect(struct c4iw_ep *ep)
|
|
{
|
|
struct cpl_act_open_req *req = NULL;
|
|
struct cpl_t5_act_open_req *t5req = NULL;
|
|
struct cpl_t6_act_open_req *t6req = NULL;
|
|
struct cpl_act_open_req6 *req6 = NULL;
|
|
struct cpl_t5_act_open_req6 *t5req6 = NULL;
|
|
struct cpl_t6_act_open_req6 *t6req6 = NULL;
|
|
struct sk_buff *skb;
|
|
u64 opt0;
|
|
u32 opt2;
|
|
unsigned int mtu_idx;
|
|
u32 wscale;
|
|
int win, sizev4, sizev6, wrlen;
|
|
struct sockaddr_in *la = (struct sockaddr_in *)
|
|
&ep->com.local_addr;
|
|
struct sockaddr_in *ra = (struct sockaddr_in *)
|
|
&ep->com.remote_addr;
|
|
struct sockaddr_in6 *la6 = (struct sockaddr_in6 *)
|
|
&ep->com.local_addr;
|
|
struct sockaddr_in6 *ra6 = (struct sockaddr_in6 *)
|
|
&ep->com.remote_addr;
|
|
int ret;
|
|
enum chip_type adapter_type = ep->com.dev->rdev.lldi.adapter_type;
|
|
u32 isn = (prandom_u32() & ~7UL) - 1;
|
|
|
|
switch (CHELSIO_CHIP_VERSION(adapter_type)) {
|
|
case CHELSIO_T4:
|
|
sizev4 = sizeof(struct cpl_act_open_req);
|
|
sizev6 = sizeof(struct cpl_act_open_req6);
|
|
break;
|
|
case CHELSIO_T5:
|
|
sizev4 = sizeof(struct cpl_t5_act_open_req);
|
|
sizev6 = sizeof(struct cpl_t5_act_open_req6);
|
|
break;
|
|
case CHELSIO_T6:
|
|
sizev4 = sizeof(struct cpl_t6_act_open_req);
|
|
sizev6 = sizeof(struct cpl_t6_act_open_req6);
|
|
break;
|
|
default:
|
|
pr_err("T%d Chip is not supported\n",
|
|
CHELSIO_CHIP_VERSION(adapter_type));
|
|
return -EINVAL;
|
|
}
|
|
|
|
wrlen = (ep->com.remote_addr.ss_family == AF_INET) ?
|
|
roundup(sizev4, 16) :
|
|
roundup(sizev6, 16);
|
|
|
|
PDBG("%s ep %p atid %u\n", __func__, ep, ep->atid);
|
|
|
|
skb = get_skb(NULL, wrlen, GFP_KERNEL);
|
|
if (!skb) {
|
|
printk(KERN_ERR MOD "%s - failed to alloc skb.\n",
|
|
__func__);
|
|
return -ENOMEM;
|
|
}
|
|
set_wr_txq(skb, CPL_PRIORITY_SETUP, ep->ctrlq_idx);
|
|
|
|
cxgb_best_mtu(ep->com.dev->rdev.lldi.mtus, ep->mtu, &mtu_idx,
|
|
enable_tcp_timestamps,
|
|
(ep->com.remote_addr.ss_family == AF_INET) ? 0 : 1);
|
|
wscale = cxgb_compute_wscale(rcv_win);
|
|
|
|
/*
|
|
* Specify the largest window that will fit in opt0. The
|
|
* remainder will be specified in the rx_data_ack.
|
|
*/
|
|
win = ep->rcv_win >> 10;
|
|
if (win > RCV_BUFSIZ_M)
|
|
win = RCV_BUFSIZ_M;
|
|
|
|
opt0 = (nocong ? NO_CONG_F : 0) |
|
|
KEEP_ALIVE_F |
|
|
DELACK_F |
|
|
WND_SCALE_V(wscale) |
|
|
MSS_IDX_V(mtu_idx) |
|
|
L2T_IDX_V(ep->l2t->idx) |
|
|
TX_CHAN_V(ep->tx_chan) |
|
|
SMAC_SEL_V(ep->smac_idx) |
|
|
DSCP_V(ep->tos >> 2) |
|
|
ULP_MODE_V(ULP_MODE_TCPDDP) |
|
|
RCV_BUFSIZ_V(win);
|
|
opt2 = RX_CHANNEL_V(0) |
|
|
CCTRL_ECN_V(enable_ecn) |
|
|
RSS_QUEUE_VALID_F | RSS_QUEUE_V(ep->rss_qid);
|
|
if (enable_tcp_timestamps)
|
|
opt2 |= TSTAMPS_EN_F;
|
|
if (enable_tcp_sack)
|
|
opt2 |= SACK_EN_F;
|
|
if (wscale && enable_tcp_window_scaling)
|
|
opt2 |= WND_SCALE_EN_F;
|
|
if (CHELSIO_CHIP_VERSION(adapter_type) > CHELSIO_T4) {
|
|
if (peer2peer)
|
|
isn += 4;
|
|
|
|
opt2 |= T5_OPT_2_VALID_F;
|
|
opt2 |= CONG_CNTRL_V(CONG_ALG_TAHOE);
|
|
opt2 |= T5_ISS_F;
|
|
}
|
|
|
|
if (ep->com.remote_addr.ss_family == AF_INET6)
|
|
cxgb4_clip_get(ep->com.dev->rdev.lldi.ports[0],
|
|
(const u32 *)&la6->sin6_addr.s6_addr, 1);
|
|
|
|
t4_set_arp_err_handler(skb, ep, act_open_req_arp_failure);
|
|
|
|
if (ep->com.remote_addr.ss_family == AF_INET) {
|
|
switch (CHELSIO_CHIP_VERSION(adapter_type)) {
|
|
case CHELSIO_T4:
|
|
req = (struct cpl_act_open_req *)skb_put(skb, wrlen);
|
|
INIT_TP_WR(req, 0);
|
|
break;
|
|
case CHELSIO_T5:
|
|
t5req = (struct cpl_t5_act_open_req *)skb_put(skb,
|
|
wrlen);
|
|
INIT_TP_WR(t5req, 0);
|
|
req = (struct cpl_act_open_req *)t5req;
|
|
break;
|
|
case CHELSIO_T6:
|
|
t6req = (struct cpl_t6_act_open_req *)skb_put(skb,
|
|
wrlen);
|
|
INIT_TP_WR(t6req, 0);
|
|
req = (struct cpl_act_open_req *)t6req;
|
|
t5req = (struct cpl_t5_act_open_req *)t6req;
|
|
break;
|
|
default:
|
|
pr_err("T%d Chip is not supported\n",
|
|
CHELSIO_CHIP_VERSION(adapter_type));
|
|
ret = -EINVAL;
|
|
goto clip_release;
|
|
}
|
|
|
|
OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ACT_OPEN_REQ,
|
|
((ep->rss_qid<<14) | ep->atid)));
|
|
req->local_port = la->sin_port;
|
|
req->peer_port = ra->sin_port;
|
|
req->local_ip = la->sin_addr.s_addr;
|
|
req->peer_ip = ra->sin_addr.s_addr;
|
|
req->opt0 = cpu_to_be64(opt0);
|
|
|
|
if (is_t4(ep->com.dev->rdev.lldi.adapter_type)) {
|
|
req->params = cpu_to_be32(cxgb4_select_ntuple(
|
|
ep->com.dev->rdev.lldi.ports[0],
|
|
ep->l2t));
|
|
req->opt2 = cpu_to_be32(opt2);
|
|
} else {
|
|
t5req->params = cpu_to_be64(FILTER_TUPLE_V(
|
|
cxgb4_select_ntuple(
|
|
ep->com.dev->rdev.lldi.ports[0],
|
|
ep->l2t)));
|
|
t5req->rsvd = cpu_to_be32(isn);
|
|
PDBG("%s snd_isn %u\n", __func__, t5req->rsvd);
|
|
t5req->opt2 = cpu_to_be32(opt2);
|
|
}
|
|
} else {
|
|
switch (CHELSIO_CHIP_VERSION(adapter_type)) {
|
|
case CHELSIO_T4:
|
|
req6 = (struct cpl_act_open_req6 *)skb_put(skb, wrlen);
|
|
INIT_TP_WR(req6, 0);
|
|
break;
|
|
case CHELSIO_T5:
|
|
t5req6 = (struct cpl_t5_act_open_req6 *)skb_put(skb,
|
|
wrlen);
|
|
INIT_TP_WR(t5req6, 0);
|
|
req6 = (struct cpl_act_open_req6 *)t5req6;
|
|
break;
|
|
case CHELSIO_T6:
|
|
t6req6 = (struct cpl_t6_act_open_req6 *)skb_put(skb,
|
|
wrlen);
|
|
INIT_TP_WR(t6req6, 0);
|
|
req6 = (struct cpl_act_open_req6 *)t6req6;
|
|
t5req6 = (struct cpl_t5_act_open_req6 *)t6req6;
|
|
break;
|
|
default:
|
|
pr_err("T%d Chip is not supported\n",
|
|
CHELSIO_CHIP_VERSION(adapter_type));
|
|
ret = -EINVAL;
|
|
goto clip_release;
|
|
}
|
|
|
|
OPCODE_TID(req6) = cpu_to_be32(MK_OPCODE_TID(CPL_ACT_OPEN_REQ6,
|
|
((ep->rss_qid<<14)|ep->atid)));
|
|
req6->local_port = la6->sin6_port;
|
|
req6->peer_port = ra6->sin6_port;
|
|
req6->local_ip_hi = *((__be64 *)(la6->sin6_addr.s6_addr));
|
|
req6->local_ip_lo = *((__be64 *)(la6->sin6_addr.s6_addr + 8));
|
|
req6->peer_ip_hi = *((__be64 *)(ra6->sin6_addr.s6_addr));
|
|
req6->peer_ip_lo = *((__be64 *)(ra6->sin6_addr.s6_addr + 8));
|
|
req6->opt0 = cpu_to_be64(opt0);
|
|
|
|
if (is_t4(ep->com.dev->rdev.lldi.adapter_type)) {
|
|
req6->params = cpu_to_be32(cxgb4_select_ntuple(
|
|
ep->com.dev->rdev.lldi.ports[0],
|
|
ep->l2t));
|
|
req6->opt2 = cpu_to_be32(opt2);
|
|
} else {
|
|
t5req6->params = cpu_to_be64(FILTER_TUPLE_V(
|
|
cxgb4_select_ntuple(
|
|
ep->com.dev->rdev.lldi.ports[0],
|
|
ep->l2t)));
|
|
t5req6->rsvd = cpu_to_be32(isn);
|
|
PDBG("%s snd_isn %u\n", __func__, t5req6->rsvd);
|
|
t5req6->opt2 = cpu_to_be32(opt2);
|
|
}
|
|
}
|
|
|
|
set_bit(ACT_OPEN_REQ, &ep->com.history);
|
|
ret = c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t);
|
|
clip_release:
|
|
if (ret && ep->com.remote_addr.ss_family == AF_INET6)
|
|
cxgb4_clip_release(ep->com.dev->rdev.lldi.ports[0],
|
|
(const u32 *)&la6->sin6_addr.s6_addr, 1);
|
|
return ret;
|
|
}
|
|
|
|
static int send_mpa_req(struct c4iw_ep *ep, struct sk_buff *skb,
|
|
u8 mpa_rev_to_use)
|
|
{
|
|
int mpalen, wrlen, ret;
|
|
struct fw_ofld_tx_data_wr *req;
|
|
struct mpa_message *mpa;
|
|
struct mpa_v2_conn_params mpa_v2_params;
|
|
|
|
PDBG("%s ep %p tid %u pd_len %d\n", __func__, ep, ep->hwtid, ep->plen);
|
|
|
|
BUG_ON(skb_cloned(skb));
|
|
|
|
mpalen = sizeof(*mpa) + ep->plen;
|
|
if (mpa_rev_to_use == 2)
|
|
mpalen += sizeof(struct mpa_v2_conn_params);
|
|
wrlen = roundup(mpalen + sizeof *req, 16);
|
|
skb = get_skb(skb, wrlen, GFP_KERNEL);
|
|
if (!skb) {
|
|
connect_reply_upcall(ep, -ENOMEM);
|
|
return -ENOMEM;
|
|
}
|
|
set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx);
|
|
|
|
req = (struct fw_ofld_tx_data_wr *)skb_put(skb, wrlen);
|
|
memset(req, 0, wrlen);
|
|
req->op_to_immdlen = cpu_to_be32(
|
|
FW_WR_OP_V(FW_OFLD_TX_DATA_WR) |
|
|
FW_WR_COMPL_F |
|
|
FW_WR_IMMDLEN_V(mpalen));
|
|
req->flowid_len16 = cpu_to_be32(
|
|
FW_WR_FLOWID_V(ep->hwtid) |
|
|
FW_WR_LEN16_V(wrlen >> 4));
|
|
req->plen = cpu_to_be32(mpalen);
|
|
req->tunnel_to_proxy = cpu_to_be32(
|
|
FW_OFLD_TX_DATA_WR_FLUSH_F |
|
|
FW_OFLD_TX_DATA_WR_SHOVE_F);
|
|
|
|
mpa = (struct mpa_message *)(req + 1);
|
|
memcpy(mpa->key, MPA_KEY_REQ, sizeof(mpa->key));
|
|
|
|
mpa->flags = 0;
|
|
if (crc_enabled)
|
|
mpa->flags |= MPA_CRC;
|
|
if (markers_enabled) {
|
|
mpa->flags |= MPA_MARKERS;
|
|
ep->mpa_attr.recv_marker_enabled = 1;
|
|
} else {
|
|
ep->mpa_attr.recv_marker_enabled = 0;
|
|
}
|
|
if (mpa_rev_to_use == 2)
|
|
mpa->flags |= MPA_ENHANCED_RDMA_CONN;
|
|
|
|
mpa->private_data_size = htons(ep->plen);
|
|
mpa->revision = mpa_rev_to_use;
|
|
if (mpa_rev_to_use == 1) {
|
|
ep->tried_with_mpa_v1 = 1;
|
|
ep->retry_with_mpa_v1 = 0;
|
|
}
|
|
|
|
if (mpa_rev_to_use == 2) {
|
|
mpa->private_data_size = htons(ntohs(mpa->private_data_size) +
|
|
sizeof (struct mpa_v2_conn_params));
|
|
PDBG("%s initiator ird %u ord %u\n", __func__, ep->ird,
|
|
ep->ord);
|
|
mpa_v2_params.ird = htons((u16)ep->ird);
|
|
mpa_v2_params.ord = htons((u16)ep->ord);
|
|
|
|
if (peer2peer) {
|
|
mpa_v2_params.ird |= htons(MPA_V2_PEER2PEER_MODEL);
|
|
if (p2p_type == FW_RI_INIT_P2PTYPE_RDMA_WRITE)
|
|
mpa_v2_params.ord |=
|
|
htons(MPA_V2_RDMA_WRITE_RTR);
|
|
else if (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ)
|
|
mpa_v2_params.ord |=
|
|
htons(MPA_V2_RDMA_READ_RTR);
|
|
}
|
|
memcpy(mpa->private_data, &mpa_v2_params,
|
|
sizeof(struct mpa_v2_conn_params));
|
|
|
|
if (ep->plen)
|
|
memcpy(mpa->private_data +
|
|
sizeof(struct mpa_v2_conn_params),
|
|
ep->mpa_pkt + sizeof(*mpa), ep->plen);
|
|
} else
|
|
if (ep->plen)
|
|
memcpy(mpa->private_data,
|
|
ep->mpa_pkt + sizeof(*mpa), ep->plen);
|
|
|
|
/*
|
|
* Reference the mpa skb. This ensures the data area
|
|
* will remain in memory until the hw acks the tx.
|
|
* Function fw4_ack() will deref it.
|
|
*/
|
|
skb_get(skb);
|
|
t4_set_arp_err_handler(skb, NULL, arp_failure_discard);
|
|
BUG_ON(ep->mpa_skb);
|
|
ep->mpa_skb = skb;
|
|
ret = c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t);
|
|
if (ret)
|
|
return ret;
|
|
start_ep_timer(ep);
|
|
__state_set(&ep->com, MPA_REQ_SENT);
|
|
ep->mpa_attr.initiator = 1;
|
|
ep->snd_seq += mpalen;
|
|
return ret;
|
|
}
|
|
|
|
static int send_mpa_reject(struct c4iw_ep *ep, const void *pdata, u8 plen)
|
|
{
|
|
int mpalen, wrlen;
|
|
struct fw_ofld_tx_data_wr *req;
|
|
struct mpa_message *mpa;
|
|
struct sk_buff *skb;
|
|
struct mpa_v2_conn_params mpa_v2_params;
|
|
|
|
PDBG("%s ep %p tid %u pd_len %d\n", __func__, ep, ep->hwtid, ep->plen);
|
|
|
|
mpalen = sizeof(*mpa) + plen;
|
|
if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn)
|
|
mpalen += sizeof(struct mpa_v2_conn_params);
|
|
wrlen = roundup(mpalen + sizeof *req, 16);
|
|
|
|
skb = get_skb(NULL, wrlen, GFP_KERNEL);
|
|
if (!skb) {
|
|
printk(KERN_ERR MOD "%s - cannot alloc skb!\n", __func__);
|
|
return -ENOMEM;
|
|
}
|
|
set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx);
|
|
|
|
req = (struct fw_ofld_tx_data_wr *)skb_put(skb, wrlen);
|
|
memset(req, 0, wrlen);
|
|
req->op_to_immdlen = cpu_to_be32(
|
|
FW_WR_OP_V(FW_OFLD_TX_DATA_WR) |
|
|
FW_WR_COMPL_F |
|
|
FW_WR_IMMDLEN_V(mpalen));
|
|
req->flowid_len16 = cpu_to_be32(
|
|
FW_WR_FLOWID_V(ep->hwtid) |
|
|
FW_WR_LEN16_V(wrlen >> 4));
|
|
req->plen = cpu_to_be32(mpalen);
|
|
req->tunnel_to_proxy = cpu_to_be32(
|
|
FW_OFLD_TX_DATA_WR_FLUSH_F |
|
|
FW_OFLD_TX_DATA_WR_SHOVE_F);
|
|
|
|
mpa = (struct mpa_message *)(req + 1);
|
|
memset(mpa, 0, sizeof(*mpa));
|
|
memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key));
|
|
mpa->flags = MPA_REJECT;
|
|
mpa->revision = ep->mpa_attr.version;
|
|
mpa->private_data_size = htons(plen);
|
|
|
|
if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) {
|
|
mpa->flags |= MPA_ENHANCED_RDMA_CONN;
|
|
mpa->private_data_size = htons(ntohs(mpa->private_data_size) +
|
|
sizeof (struct mpa_v2_conn_params));
|
|
mpa_v2_params.ird = htons(((u16)ep->ird) |
|
|
(peer2peer ? MPA_V2_PEER2PEER_MODEL :
|
|
0));
|
|
mpa_v2_params.ord = htons(((u16)ep->ord) | (peer2peer ?
|
|
(p2p_type ==
|
|
FW_RI_INIT_P2PTYPE_RDMA_WRITE ?
|
|
MPA_V2_RDMA_WRITE_RTR : p2p_type ==
|
|
FW_RI_INIT_P2PTYPE_READ_REQ ?
|
|
MPA_V2_RDMA_READ_RTR : 0) : 0));
|
|
memcpy(mpa->private_data, &mpa_v2_params,
|
|
sizeof(struct mpa_v2_conn_params));
|
|
|
|
if (ep->plen)
|
|
memcpy(mpa->private_data +
|
|
sizeof(struct mpa_v2_conn_params), pdata, plen);
|
|
} else
|
|
if (plen)
|
|
memcpy(mpa->private_data, pdata, plen);
|
|
|
|
/*
|
|
* Reference the mpa skb again. This ensures the data area
|
|
* will remain in memory until the hw acks the tx.
|
|
* Function fw4_ack() will deref it.
|
|
*/
|
|
skb_get(skb);
|
|
set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx);
|
|
t4_set_arp_err_handler(skb, NULL, mpa_start_arp_failure);
|
|
BUG_ON(ep->mpa_skb);
|
|
ep->mpa_skb = skb;
|
|
ep->snd_seq += mpalen;
|
|
return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t);
|
|
}
|
|
|
|
static int send_mpa_reply(struct c4iw_ep *ep, const void *pdata, u8 plen)
|
|
{
|
|
int mpalen, wrlen;
|
|
struct fw_ofld_tx_data_wr *req;
|
|
struct mpa_message *mpa;
|
|
struct sk_buff *skb;
|
|
struct mpa_v2_conn_params mpa_v2_params;
|
|
|
|
PDBG("%s ep %p tid %u pd_len %d\n", __func__, ep, ep->hwtid, ep->plen);
|
|
|
|
mpalen = sizeof(*mpa) + plen;
|
|
if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn)
|
|
mpalen += sizeof(struct mpa_v2_conn_params);
|
|
wrlen = roundup(mpalen + sizeof *req, 16);
|
|
|
|
skb = get_skb(NULL, wrlen, GFP_KERNEL);
|
|
if (!skb) {
|
|
printk(KERN_ERR MOD "%s - cannot alloc skb!\n", __func__);
|
|
return -ENOMEM;
|
|
}
|
|
set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx);
|
|
|
|
req = (struct fw_ofld_tx_data_wr *) skb_put(skb, wrlen);
|
|
memset(req, 0, wrlen);
|
|
req->op_to_immdlen = cpu_to_be32(
|
|
FW_WR_OP_V(FW_OFLD_TX_DATA_WR) |
|
|
FW_WR_COMPL_F |
|
|
FW_WR_IMMDLEN_V(mpalen));
|
|
req->flowid_len16 = cpu_to_be32(
|
|
FW_WR_FLOWID_V(ep->hwtid) |
|
|
FW_WR_LEN16_V(wrlen >> 4));
|
|
req->plen = cpu_to_be32(mpalen);
|
|
req->tunnel_to_proxy = cpu_to_be32(
|
|
FW_OFLD_TX_DATA_WR_FLUSH_F |
|
|
FW_OFLD_TX_DATA_WR_SHOVE_F);
|
|
|
|
mpa = (struct mpa_message *)(req + 1);
|
|
memset(mpa, 0, sizeof(*mpa));
|
|
memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key));
|
|
mpa->flags = 0;
|
|
if (ep->mpa_attr.crc_enabled)
|
|
mpa->flags |= MPA_CRC;
|
|
if (ep->mpa_attr.recv_marker_enabled)
|
|
mpa->flags |= MPA_MARKERS;
|
|
mpa->revision = ep->mpa_attr.version;
|
|
mpa->private_data_size = htons(plen);
|
|
|
|
if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) {
|
|
mpa->flags |= MPA_ENHANCED_RDMA_CONN;
|
|
mpa->private_data_size = htons(ntohs(mpa->private_data_size) +
|
|
sizeof (struct mpa_v2_conn_params));
|
|
mpa_v2_params.ird = htons((u16)ep->ird);
|
|
mpa_v2_params.ord = htons((u16)ep->ord);
|
|
if (peer2peer && (ep->mpa_attr.p2p_type !=
|
|
FW_RI_INIT_P2PTYPE_DISABLED)) {
|
|
mpa_v2_params.ird |= htons(MPA_V2_PEER2PEER_MODEL);
|
|
|
|
if (p2p_type == FW_RI_INIT_P2PTYPE_RDMA_WRITE)
|
|
mpa_v2_params.ord |=
|
|
htons(MPA_V2_RDMA_WRITE_RTR);
|
|
else if (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ)
|
|
mpa_v2_params.ord |=
|
|
htons(MPA_V2_RDMA_READ_RTR);
|
|
}
|
|
|
|
memcpy(mpa->private_data, &mpa_v2_params,
|
|
sizeof(struct mpa_v2_conn_params));
|
|
|
|
if (ep->plen)
|
|
memcpy(mpa->private_data +
|
|
sizeof(struct mpa_v2_conn_params), pdata, plen);
|
|
} else
|
|
if (plen)
|
|
memcpy(mpa->private_data, pdata, plen);
|
|
|
|
/*
|
|
* Reference the mpa skb. This ensures the data area
|
|
* will remain in memory until the hw acks the tx.
|
|
* Function fw4_ack() will deref it.
|
|
*/
|
|
skb_get(skb);
|
|
t4_set_arp_err_handler(skb, NULL, mpa_start_arp_failure);
|
|
ep->mpa_skb = skb;
|
|
__state_set(&ep->com, MPA_REP_SENT);
|
|
ep->snd_seq += mpalen;
|
|
return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t);
|
|
}
|
|
|
|
static int act_establish(struct c4iw_dev *dev, struct sk_buff *skb)
|
|
{
|
|
struct c4iw_ep *ep;
|
|
struct cpl_act_establish *req = cplhdr(skb);
|
|
unsigned int tid = GET_TID(req);
|
|
unsigned int atid = TID_TID_G(ntohl(req->tos_atid));
|
|
struct tid_info *t = dev->rdev.lldi.tids;
|
|
int ret;
|
|
|
|
ep = lookup_atid(t, atid);
|
|
|
|
PDBG("%s ep %p tid %u snd_isn %u rcv_isn %u\n", __func__, ep, tid,
|
|
be32_to_cpu(req->snd_isn), be32_to_cpu(req->rcv_isn));
|
|
|
|
mutex_lock(&ep->com.mutex);
|
|
dst_confirm(ep->dst);
|
|
|
|
/* setup the hwtid for this connection */
|
|
ep->hwtid = tid;
|
|
cxgb4_insert_tid(t, ep, tid);
|
|
insert_ep_tid(ep);
|
|
|
|
ep->snd_seq = be32_to_cpu(req->snd_isn);
|
|
ep->rcv_seq = be32_to_cpu(req->rcv_isn);
|
|
|
|
set_emss(ep, ntohs(req->tcp_opt));
|
|
|
|
/* dealloc the atid */
|
|
remove_handle(ep->com.dev, &ep->com.dev->atid_idr, atid);
|
|
cxgb4_free_atid(t, atid);
|
|
set_bit(ACT_ESTAB, &ep->com.history);
|
|
|
|
/* start MPA negotiation */
|
|
ret = send_flowc(ep);
|
|
if (ret)
|
|
goto err;
|
|
if (ep->retry_with_mpa_v1)
|
|
ret = send_mpa_req(ep, skb, 1);
|
|
else
|
|
ret = send_mpa_req(ep, skb, mpa_rev);
|
|
if (ret)
|
|
goto err;
|
|
mutex_unlock(&ep->com.mutex);
|
|
return 0;
|
|
err:
|
|
mutex_unlock(&ep->com.mutex);
|
|
connect_reply_upcall(ep, -ENOMEM);
|
|
c4iw_ep_disconnect(ep, 0, GFP_KERNEL);
|
|
return 0;
|
|
}
|
|
|
|
static void close_complete_upcall(struct c4iw_ep *ep, int status)
|
|
{
|
|
struct iw_cm_event event;
|
|
|
|
PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
|
|
memset(&event, 0, sizeof(event));
|
|
event.event = IW_CM_EVENT_CLOSE;
|
|
event.status = status;
|
|
if (ep->com.cm_id) {
|
|
PDBG("close complete delivered ep %p cm_id %p tid %u\n",
|
|
ep, ep->com.cm_id, ep->hwtid);
|
|
ep->com.cm_id->event_handler(ep->com.cm_id, &event);
|
|
deref_cm_id(&ep->com);
|
|
set_bit(CLOSE_UPCALL, &ep->com.history);
|
|
}
|
|
}
|
|
|
|
static void peer_close_upcall(struct c4iw_ep *ep)
|
|
{
|
|
struct iw_cm_event event;
|
|
|
|
PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
|
|
memset(&event, 0, sizeof(event));
|
|
event.event = IW_CM_EVENT_DISCONNECT;
|
|
if (ep->com.cm_id) {
|
|
PDBG("peer close delivered ep %p cm_id %p tid %u\n",
|
|
ep, ep->com.cm_id, ep->hwtid);
|
|
ep->com.cm_id->event_handler(ep->com.cm_id, &event);
|
|
set_bit(DISCONN_UPCALL, &ep->com.history);
|
|
}
|
|
}
|
|
|
|
static void peer_abort_upcall(struct c4iw_ep *ep)
|
|
{
|
|
struct iw_cm_event event;
|
|
|
|
PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
|
|
memset(&event, 0, sizeof(event));
|
|
event.event = IW_CM_EVENT_CLOSE;
|
|
event.status = -ECONNRESET;
|
|
if (ep->com.cm_id) {
|
|
PDBG("abort delivered ep %p cm_id %p tid %u\n", ep,
|
|
ep->com.cm_id, ep->hwtid);
|
|
ep->com.cm_id->event_handler(ep->com.cm_id, &event);
|
|
deref_cm_id(&ep->com);
|
|
set_bit(ABORT_UPCALL, &ep->com.history);
|
|
}
|
|
}
|
|
|
|
static void connect_reply_upcall(struct c4iw_ep *ep, int status)
|
|
{
|
|
struct iw_cm_event event;
|
|
|
|
PDBG("%s ep %p tid %u status %d\n", __func__, ep, ep->hwtid, status);
|
|
memset(&event, 0, sizeof(event));
|
|
event.event = IW_CM_EVENT_CONNECT_REPLY;
|
|
event.status = status;
|
|
memcpy(&event.local_addr, &ep->com.local_addr,
|
|
sizeof(ep->com.local_addr));
|
|
memcpy(&event.remote_addr, &ep->com.remote_addr,
|
|
sizeof(ep->com.remote_addr));
|
|
|
|
if ((status == 0) || (status == -ECONNREFUSED)) {
|
|
if (!ep->tried_with_mpa_v1) {
|
|
/* this means MPA_v2 is used */
|
|
event.ord = ep->ird;
|
|
event.ird = ep->ord;
|
|
event.private_data_len = ep->plen -
|
|
sizeof(struct mpa_v2_conn_params);
|
|
event.private_data = ep->mpa_pkt +
|
|
sizeof(struct mpa_message) +
|
|
sizeof(struct mpa_v2_conn_params);
|
|
} else {
|
|
/* this means MPA_v1 is used */
|
|
event.ord = cur_max_read_depth(ep->com.dev);
|
|
event.ird = cur_max_read_depth(ep->com.dev);
|
|
event.private_data_len = ep->plen;
|
|
event.private_data = ep->mpa_pkt +
|
|
sizeof(struct mpa_message);
|
|
}
|
|
}
|
|
|
|
PDBG("%s ep %p tid %u status %d\n", __func__, ep,
|
|
ep->hwtid, status);
|
|
set_bit(CONN_RPL_UPCALL, &ep->com.history);
|
|
ep->com.cm_id->event_handler(ep->com.cm_id, &event);
|
|
|
|
if (status < 0)
|
|
deref_cm_id(&ep->com);
|
|
}
|
|
|
|
static int connect_request_upcall(struct c4iw_ep *ep)
|
|
{
|
|
struct iw_cm_event event;
|
|
int ret;
|
|
|
|
PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
|
|
memset(&event, 0, sizeof(event));
|
|
event.event = IW_CM_EVENT_CONNECT_REQUEST;
|
|
memcpy(&event.local_addr, &ep->com.local_addr,
|
|
sizeof(ep->com.local_addr));
|
|
memcpy(&event.remote_addr, &ep->com.remote_addr,
|
|
sizeof(ep->com.remote_addr));
|
|
event.provider_data = ep;
|
|
if (!ep->tried_with_mpa_v1) {
|
|
/* this means MPA_v2 is used */
|
|
event.ord = ep->ord;
|
|
event.ird = ep->ird;
|
|
event.private_data_len = ep->plen -
|
|
sizeof(struct mpa_v2_conn_params);
|
|
event.private_data = ep->mpa_pkt + sizeof(struct mpa_message) +
|
|
sizeof(struct mpa_v2_conn_params);
|
|
} else {
|
|
/* this means MPA_v1 is used. Send max supported */
|
|
event.ord = cur_max_read_depth(ep->com.dev);
|
|
event.ird = cur_max_read_depth(ep->com.dev);
|
|
event.private_data_len = ep->plen;
|
|
event.private_data = ep->mpa_pkt + sizeof(struct mpa_message);
|
|
}
|
|
c4iw_get_ep(&ep->com);
|
|
ret = ep->parent_ep->com.cm_id->event_handler(ep->parent_ep->com.cm_id,
|
|
&event);
|
|
if (ret)
|
|
c4iw_put_ep(&ep->com);
|
|
set_bit(CONNREQ_UPCALL, &ep->com.history);
|
|
c4iw_put_ep(&ep->parent_ep->com);
|
|
return ret;
|
|
}
|
|
|
|
static void established_upcall(struct c4iw_ep *ep)
|
|
{
|
|
struct iw_cm_event event;
|
|
|
|
PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
|
|
memset(&event, 0, sizeof(event));
|
|
event.event = IW_CM_EVENT_ESTABLISHED;
|
|
event.ird = ep->ord;
|
|
event.ord = ep->ird;
|
|
if (ep->com.cm_id) {
|
|
PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
|
|
ep->com.cm_id->event_handler(ep->com.cm_id, &event);
|
|
set_bit(ESTAB_UPCALL, &ep->com.history);
|
|
}
|
|
}
|
|
|
|
static int update_rx_credits(struct c4iw_ep *ep, u32 credits)
|
|
{
|
|
struct sk_buff *skb;
|
|
u32 wrlen = roundup(sizeof(struct cpl_rx_data_ack), 16);
|
|
u32 credit_dack;
|
|
|
|
PDBG("%s ep %p tid %u credits %u\n", __func__, ep, ep->hwtid, credits);
|
|
skb = get_skb(NULL, wrlen, GFP_KERNEL);
|
|
if (!skb) {
|
|
printk(KERN_ERR MOD "update_rx_credits - cannot alloc skb!\n");
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* If we couldn't specify the entire rcv window at connection setup
|
|
* due to the limit in the number of bits in the RCV_BUFSIZ field,
|
|
* then add the overage in to the credits returned.
|
|
*/
|
|
if (ep->rcv_win > RCV_BUFSIZ_M * 1024)
|
|
credits += ep->rcv_win - RCV_BUFSIZ_M * 1024;
|
|
|
|
credit_dack = credits | RX_FORCE_ACK_F | RX_DACK_CHANGE_F |
|
|
RX_DACK_MODE_V(dack_mode);
|
|
|
|
cxgb_mk_rx_data_ack(skb, wrlen, ep->hwtid, ep->ctrlq_idx,
|
|
credit_dack);
|
|
|
|
c4iw_ofld_send(&ep->com.dev->rdev, skb);
|
|
return credits;
|
|
}
|
|
|
|
#define RELAXED_IRD_NEGOTIATION 1
|
|
|
|
/*
|
|
* process_mpa_reply - process streaming mode MPA reply
|
|
*
|
|
* Returns:
|
|
*
|
|
* 0 upon success indicating a connect request was delivered to the ULP
|
|
* or the mpa request is incomplete but valid so far.
|
|
*
|
|
* 1 if a failure requires the caller to close the connection.
|
|
*
|
|
* 2 if a failure requires the caller to abort the connection.
|
|
*/
|
|
static int process_mpa_reply(struct c4iw_ep *ep, struct sk_buff *skb)
|
|
{
|
|
struct mpa_message *mpa;
|
|
struct mpa_v2_conn_params *mpa_v2_params;
|
|
u16 plen;
|
|
u16 resp_ird, resp_ord;
|
|
u8 rtr_mismatch = 0, insuff_ird = 0;
|
|
struct c4iw_qp_attributes attrs;
|
|
enum c4iw_qp_attr_mask mask;
|
|
int err;
|
|
int disconnect = 0;
|
|
|
|
PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
|
|
|
|
/*
|
|
* If we get more than the supported amount of private data
|
|
* then we must fail this connection.
|
|
*/
|
|
if (ep->mpa_pkt_len + skb->len > sizeof(ep->mpa_pkt)) {
|
|
err = -EINVAL;
|
|
goto err_stop_timer;
|
|
}
|
|
|
|
/*
|
|
* copy the new data into our accumulation buffer.
|
|
*/
|
|
skb_copy_from_linear_data(skb, &(ep->mpa_pkt[ep->mpa_pkt_len]),
|
|
skb->len);
|
|
ep->mpa_pkt_len += skb->len;
|
|
|
|
/*
|
|
* if we don't even have the mpa message, then bail.
|
|
*/
|
|
if (ep->mpa_pkt_len < sizeof(*mpa))
|
|
return 0;
|
|
mpa = (struct mpa_message *) ep->mpa_pkt;
|
|
|
|
/* Validate MPA header. */
|
|
if (mpa->revision > mpa_rev) {
|
|
printk(KERN_ERR MOD "%s MPA version mismatch. Local = %d,"
|
|
" Received = %d\n", __func__, mpa_rev, mpa->revision);
|
|
err = -EPROTO;
|
|
goto err_stop_timer;
|
|
}
|
|
if (memcmp(mpa->key, MPA_KEY_REP, sizeof(mpa->key))) {
|
|
err = -EPROTO;
|
|
goto err_stop_timer;
|
|
}
|
|
|
|
plen = ntohs(mpa->private_data_size);
|
|
|
|
/*
|
|
* Fail if there's too much private data.
|
|
*/
|
|
if (plen > MPA_MAX_PRIVATE_DATA) {
|
|
err = -EPROTO;
|
|
goto err_stop_timer;
|
|
}
|
|
|
|
/*
|
|
* If plen does not account for pkt size
|
|
*/
|
|
if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) {
|
|
err = -EPROTO;
|
|
goto err_stop_timer;
|
|
}
|
|
|
|
ep->plen = (u8) plen;
|
|
|
|
/*
|
|
* If we don't have all the pdata yet, then bail.
|
|
* We'll continue process when more data arrives.
|
|
*/
|
|
if (ep->mpa_pkt_len < (sizeof(*mpa) + plen))
|
|
return 0;
|
|
|
|
if (mpa->flags & MPA_REJECT) {
|
|
err = -ECONNREFUSED;
|
|
goto err_stop_timer;
|
|
}
|
|
|
|
/*
|
|
* Stop mpa timer. If it expired, then
|
|
* we ignore the MPA reply. process_timeout()
|
|
* will abort the connection.
|
|
*/
|
|
if (stop_ep_timer(ep))
|
|
return 0;
|
|
|
|
/*
|
|
* If we get here we have accumulated the entire mpa
|
|
* start reply message including private data. And
|
|
* the MPA header is valid.
|
|
*/
|
|
__state_set(&ep->com, FPDU_MODE);
|
|
ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0;
|
|
ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0;
|
|
ep->mpa_attr.version = mpa->revision;
|
|
ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED;
|
|
|
|
if (mpa->revision == 2) {
|
|
ep->mpa_attr.enhanced_rdma_conn =
|
|
mpa->flags & MPA_ENHANCED_RDMA_CONN ? 1 : 0;
|
|
if (ep->mpa_attr.enhanced_rdma_conn) {
|
|
mpa_v2_params = (struct mpa_v2_conn_params *)
|
|
(ep->mpa_pkt + sizeof(*mpa));
|
|
resp_ird = ntohs(mpa_v2_params->ird) &
|
|
MPA_V2_IRD_ORD_MASK;
|
|
resp_ord = ntohs(mpa_v2_params->ord) &
|
|
MPA_V2_IRD_ORD_MASK;
|
|
PDBG("%s responder ird %u ord %u ep ird %u ord %u\n",
|
|
__func__, resp_ird, resp_ord, ep->ird, ep->ord);
|
|
|
|
/*
|
|
* This is a double-check. Ideally, below checks are
|
|
* not required since ird/ord stuff has been taken
|
|
* care of in c4iw_accept_cr
|
|
*/
|
|
if (ep->ird < resp_ord) {
|
|
if (RELAXED_IRD_NEGOTIATION && resp_ord <=
|
|
ep->com.dev->rdev.lldi.max_ordird_qp)
|
|
ep->ird = resp_ord;
|
|
else
|
|
insuff_ird = 1;
|
|
} else if (ep->ird > resp_ord) {
|
|
ep->ird = resp_ord;
|
|
}
|
|
if (ep->ord > resp_ird) {
|
|
if (RELAXED_IRD_NEGOTIATION)
|
|
ep->ord = resp_ird;
|
|
else
|
|
insuff_ird = 1;
|
|
}
|
|
if (insuff_ird) {
|
|
err = -ENOMEM;
|
|
ep->ird = resp_ord;
|
|
ep->ord = resp_ird;
|
|
}
|
|
|
|
if (ntohs(mpa_v2_params->ird) &
|
|
MPA_V2_PEER2PEER_MODEL) {
|
|
if (ntohs(mpa_v2_params->ord) &
|
|
MPA_V2_RDMA_WRITE_RTR)
|
|
ep->mpa_attr.p2p_type =
|
|
FW_RI_INIT_P2PTYPE_RDMA_WRITE;
|
|
else if (ntohs(mpa_v2_params->ord) &
|
|
MPA_V2_RDMA_READ_RTR)
|
|
ep->mpa_attr.p2p_type =
|
|
FW_RI_INIT_P2PTYPE_READ_REQ;
|
|
}
|
|
}
|
|
} else if (mpa->revision == 1)
|
|
if (peer2peer)
|
|
ep->mpa_attr.p2p_type = p2p_type;
|
|
|
|
PDBG("%s - crc_enabled=%d, recv_marker_enabled=%d, "
|
|
"xmit_marker_enabled=%d, version=%d p2p_type=%d local-p2p_type = "
|
|
"%d\n", __func__, ep->mpa_attr.crc_enabled,
|
|
ep->mpa_attr.recv_marker_enabled,
|
|
ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version,
|
|
ep->mpa_attr.p2p_type, p2p_type);
|
|
|
|
/*
|
|
* If responder's RTR does not match with that of initiator, assign
|
|
* FW_RI_INIT_P2PTYPE_DISABLED in mpa attributes so that RTR is not
|
|
* generated when moving QP to RTS state.
|
|
* A TERM message will be sent after QP has moved to RTS state
|
|
*/
|
|
if ((ep->mpa_attr.version == 2) && peer2peer &&
|
|
(ep->mpa_attr.p2p_type != p2p_type)) {
|
|
ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED;
|
|
rtr_mismatch = 1;
|
|
}
|
|
|
|
attrs.mpa_attr = ep->mpa_attr;
|
|
attrs.max_ird = ep->ird;
|
|
attrs.max_ord = ep->ord;
|
|
attrs.llp_stream_handle = ep;
|
|
attrs.next_state = C4IW_QP_STATE_RTS;
|
|
|
|
mask = C4IW_QP_ATTR_NEXT_STATE |
|
|
C4IW_QP_ATTR_LLP_STREAM_HANDLE | C4IW_QP_ATTR_MPA_ATTR |
|
|
C4IW_QP_ATTR_MAX_IRD | C4IW_QP_ATTR_MAX_ORD;
|
|
|
|
/* bind QP and TID with INIT_WR */
|
|
err = c4iw_modify_qp(ep->com.qp->rhp,
|
|
ep->com.qp, mask, &attrs, 1);
|
|
if (err)
|
|
goto err;
|
|
|
|
/*
|
|
* If responder's RTR requirement did not match with what initiator
|
|
* supports, generate TERM message
|
|
*/
|
|
if (rtr_mismatch) {
|
|
printk(KERN_ERR "%s: RTR mismatch, sending TERM\n", __func__);
|
|
attrs.layer_etype = LAYER_MPA | DDP_LLP;
|
|
attrs.ecode = MPA_NOMATCH_RTR;
|
|
attrs.next_state = C4IW_QP_STATE_TERMINATE;
|
|
attrs.send_term = 1;
|
|
err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp,
|
|
C4IW_QP_ATTR_NEXT_STATE, &attrs, 1);
|
|
err = -ENOMEM;
|
|
disconnect = 1;
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* Generate TERM if initiator IRD is not sufficient for responder
|
|
* provided ORD. Currently, we do the same behaviour even when
|
|
* responder provided IRD is also not sufficient as regards to
|
|
* initiator ORD.
|
|
*/
|
|
if (insuff_ird) {
|
|
printk(KERN_ERR "%s: Insufficient IRD, sending TERM\n",
|
|
__func__);
|
|
attrs.layer_etype = LAYER_MPA | DDP_LLP;
|
|
attrs.ecode = MPA_INSUFF_IRD;
|
|
attrs.next_state = C4IW_QP_STATE_TERMINATE;
|
|
attrs.send_term = 1;
|
|
err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp,
|
|
C4IW_QP_ATTR_NEXT_STATE, &attrs, 1);
|
|
err = -ENOMEM;
|
|
disconnect = 1;
|
|
goto out;
|
|
}
|
|
goto out;
|
|
err_stop_timer:
|
|
stop_ep_timer(ep);
|
|
err:
|
|
disconnect = 2;
|
|
out:
|
|
connect_reply_upcall(ep, err);
|
|
return disconnect;
|
|
}
|
|
|
|
/*
|
|
* process_mpa_request - process streaming mode MPA request
|
|
*
|
|
* Returns:
|
|
*
|
|
* 0 upon success indicating a connect request was delivered to the ULP
|
|
* or the mpa request is incomplete but valid so far.
|
|
*
|
|
* 1 if a failure requires the caller to close the connection.
|
|
*
|
|
* 2 if a failure requires the caller to abort the connection.
|
|
*/
|
|
static int process_mpa_request(struct c4iw_ep *ep, struct sk_buff *skb)
|
|
{
|
|
struct mpa_message *mpa;
|
|
struct mpa_v2_conn_params *mpa_v2_params;
|
|
u16 plen;
|
|
|
|
PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
|
|
|
|
/*
|
|
* If we get more than the supported amount of private data
|
|
* then we must fail this connection.
|
|
*/
|
|
if (ep->mpa_pkt_len + skb->len > sizeof(ep->mpa_pkt))
|
|
goto err_stop_timer;
|
|
|
|
PDBG("%s enter (%s line %u)\n", __func__, __FILE__, __LINE__);
|
|
|
|
/*
|
|
* Copy the new data into our accumulation buffer.
|
|
*/
|
|
skb_copy_from_linear_data(skb, &(ep->mpa_pkt[ep->mpa_pkt_len]),
|
|
skb->len);
|
|
ep->mpa_pkt_len += skb->len;
|
|
|
|
/*
|
|
* If we don't even have the mpa message, then bail.
|
|
* We'll continue process when more data arrives.
|
|
*/
|
|
if (ep->mpa_pkt_len < sizeof(*mpa))
|
|
return 0;
|
|
|
|
PDBG("%s enter (%s line %u)\n", __func__, __FILE__, __LINE__);
|
|
mpa = (struct mpa_message *) ep->mpa_pkt;
|
|
|
|
/*
|
|
* Validate MPA Header.
|
|
*/
|
|
if (mpa->revision > mpa_rev) {
|
|
printk(KERN_ERR MOD "%s MPA version mismatch. Local = %d,"
|
|
" Received = %d\n", __func__, mpa_rev, mpa->revision);
|
|
goto err_stop_timer;
|
|
}
|
|
|
|
if (memcmp(mpa->key, MPA_KEY_REQ, sizeof(mpa->key)))
|
|
goto err_stop_timer;
|
|
|
|
plen = ntohs(mpa->private_data_size);
|
|
|
|
/*
|
|
* Fail if there's too much private data.
|
|
*/
|
|
if (plen > MPA_MAX_PRIVATE_DATA)
|
|
goto err_stop_timer;
|
|
|
|
/*
|
|
* If plen does not account for pkt size
|
|
*/
|
|
if (ep->mpa_pkt_len > (sizeof(*mpa) + plen))
|
|
goto err_stop_timer;
|
|
ep->plen = (u8) plen;
|
|
|
|
/*
|
|
* If we don't have all the pdata yet, then bail.
|
|
*/
|
|
if (ep->mpa_pkt_len < (sizeof(*mpa) + plen))
|
|
return 0;
|
|
|
|
/*
|
|
* If we get here we have accumulated the entire mpa
|
|
* start reply message including private data.
|
|
*/
|
|
ep->mpa_attr.initiator = 0;
|
|
ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0;
|
|
ep->mpa_attr.recv_marker_enabled = markers_enabled;
|
|
ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0;
|
|
ep->mpa_attr.version = mpa->revision;
|
|
if (mpa->revision == 1)
|
|
ep->tried_with_mpa_v1 = 1;
|
|
ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED;
|
|
|
|
if (mpa->revision == 2) {
|
|
ep->mpa_attr.enhanced_rdma_conn =
|
|
mpa->flags & MPA_ENHANCED_RDMA_CONN ? 1 : 0;
|
|
if (ep->mpa_attr.enhanced_rdma_conn) {
|
|
mpa_v2_params = (struct mpa_v2_conn_params *)
|
|
(ep->mpa_pkt + sizeof(*mpa));
|
|
ep->ird = ntohs(mpa_v2_params->ird) &
|
|
MPA_V2_IRD_ORD_MASK;
|
|
ep->ird = min_t(u32, ep->ird,
|
|
cur_max_read_depth(ep->com.dev));
|
|
ep->ord = ntohs(mpa_v2_params->ord) &
|
|
MPA_V2_IRD_ORD_MASK;
|
|
ep->ord = min_t(u32, ep->ord,
|
|
cur_max_read_depth(ep->com.dev));
|
|
PDBG("%s initiator ird %u ord %u\n", __func__, ep->ird,
|
|
ep->ord);
|
|
if (ntohs(mpa_v2_params->ird) & MPA_V2_PEER2PEER_MODEL)
|
|
if (peer2peer) {
|
|
if (ntohs(mpa_v2_params->ord) &
|
|
MPA_V2_RDMA_WRITE_RTR)
|
|
ep->mpa_attr.p2p_type =
|
|
FW_RI_INIT_P2PTYPE_RDMA_WRITE;
|
|
else if (ntohs(mpa_v2_params->ord) &
|
|
MPA_V2_RDMA_READ_RTR)
|
|
ep->mpa_attr.p2p_type =
|
|
FW_RI_INIT_P2PTYPE_READ_REQ;
|
|
}
|
|
}
|
|
} else if (mpa->revision == 1)
|
|
if (peer2peer)
|
|
ep->mpa_attr.p2p_type = p2p_type;
|
|
|
|
PDBG("%s - crc_enabled=%d, recv_marker_enabled=%d, "
|
|
"xmit_marker_enabled=%d, version=%d p2p_type=%d\n", __func__,
|
|
ep->mpa_attr.crc_enabled, ep->mpa_attr.recv_marker_enabled,
|
|
ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version,
|
|
ep->mpa_attr.p2p_type);
|
|
|
|
__state_set(&ep->com, MPA_REQ_RCVD);
|
|
|
|
/* drive upcall */
|
|
mutex_lock_nested(&ep->parent_ep->com.mutex, SINGLE_DEPTH_NESTING);
|
|
if (ep->parent_ep->com.state != DEAD) {
|
|
if (connect_request_upcall(ep))
|
|
goto err_unlock_parent;
|
|
} else {
|
|
goto err_unlock_parent;
|
|
}
|
|
mutex_unlock(&ep->parent_ep->com.mutex);
|
|
return 0;
|
|
|
|
err_unlock_parent:
|
|
mutex_unlock(&ep->parent_ep->com.mutex);
|
|
goto err_out;
|
|
err_stop_timer:
|
|
(void)stop_ep_timer(ep);
|
|
err_out:
|
|
return 2;
|
|
}
|
|
|
|
static int rx_data(struct c4iw_dev *dev, struct sk_buff *skb)
|
|
{
|
|
struct c4iw_ep *ep;
|
|
struct cpl_rx_data *hdr = cplhdr(skb);
|
|
unsigned int dlen = ntohs(hdr->len);
|
|
unsigned int tid = GET_TID(hdr);
|
|
__u8 status = hdr->status;
|
|
int disconnect = 0;
|
|
|
|
ep = get_ep_from_tid(dev, tid);
|
|
if (!ep)
|
|
return 0;
|
|
PDBG("%s ep %p tid %u dlen %u\n", __func__, ep, ep->hwtid, dlen);
|
|
skb_pull(skb, sizeof(*hdr));
|
|
skb_trim(skb, dlen);
|
|
mutex_lock(&ep->com.mutex);
|
|
|
|
switch (ep->com.state) {
|
|
case MPA_REQ_SENT:
|
|
update_rx_credits(ep, dlen);
|
|
ep->rcv_seq += dlen;
|
|
disconnect = process_mpa_reply(ep, skb);
|
|
break;
|
|
case MPA_REQ_WAIT:
|
|
update_rx_credits(ep, dlen);
|
|
ep->rcv_seq += dlen;
|
|
disconnect = process_mpa_request(ep, skb);
|
|
break;
|
|
case FPDU_MODE: {
|
|
struct c4iw_qp_attributes attrs;
|
|
|
|
update_rx_credits(ep, dlen);
|
|
BUG_ON(!ep->com.qp);
|
|
if (status)
|
|
pr_err("%s Unexpected streaming data." \
|
|
" qpid %u ep %p state %d tid %u status %d\n",
|
|
__func__, ep->com.qp->wq.sq.qid, ep,
|
|
ep->com.state, ep->hwtid, status);
|
|
attrs.next_state = C4IW_QP_STATE_TERMINATE;
|
|
c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp,
|
|
C4IW_QP_ATTR_NEXT_STATE, &attrs, 1);
|
|
disconnect = 1;
|
|
break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
mutex_unlock(&ep->com.mutex);
|
|
if (disconnect)
|
|
c4iw_ep_disconnect(ep, disconnect == 2, GFP_KERNEL);
|
|
c4iw_put_ep(&ep->com);
|
|
return 0;
|
|
}
|
|
|
|
static int abort_rpl(struct c4iw_dev *dev, struct sk_buff *skb)
|
|
{
|
|
struct c4iw_ep *ep;
|
|
struct cpl_abort_rpl_rss *rpl = cplhdr(skb);
|
|
int release = 0;
|
|
unsigned int tid = GET_TID(rpl);
|
|
|
|
ep = get_ep_from_tid(dev, tid);
|
|
if (!ep) {
|
|
printk(KERN_WARNING MOD "Abort rpl to freed endpoint\n");
|
|
return 0;
|
|
}
|
|
PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
|
|
mutex_lock(&ep->com.mutex);
|
|
switch (ep->com.state) {
|
|
case ABORTING:
|
|
c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET);
|
|
__state_set(&ep->com, DEAD);
|
|
release = 1;
|
|
break;
|
|
default:
|
|
printk(KERN_ERR "%s ep %p state %d\n",
|
|
__func__, ep, ep->com.state);
|
|
break;
|
|
}
|
|
mutex_unlock(&ep->com.mutex);
|
|
|
|
if (release)
|
|
release_ep_resources(ep);
|
|
c4iw_put_ep(&ep->com);
|
|
return 0;
|
|
}
|
|
|
|
static int send_fw_act_open_req(struct c4iw_ep *ep, unsigned int atid)
|
|
{
|
|
struct sk_buff *skb;
|
|
struct fw_ofld_connection_wr *req;
|
|
unsigned int mtu_idx;
|
|
u32 wscale;
|
|
struct sockaddr_in *sin;
|
|
int win;
|
|
|
|
skb = get_skb(NULL, sizeof(*req), GFP_KERNEL);
|
|
req = (struct fw_ofld_connection_wr *)__skb_put(skb, sizeof(*req));
|
|
memset(req, 0, sizeof(*req));
|
|
req->op_compl = htonl(WR_OP_V(FW_OFLD_CONNECTION_WR));
|
|
req->len16_pkd = htonl(FW_WR_LEN16_V(DIV_ROUND_UP(sizeof(*req), 16)));
|
|
req->le.filter = cpu_to_be32(cxgb4_select_ntuple(
|
|
ep->com.dev->rdev.lldi.ports[0],
|
|
ep->l2t));
|
|
sin = (struct sockaddr_in *)&ep->com.local_addr;
|
|
req->le.lport = sin->sin_port;
|
|
req->le.u.ipv4.lip = sin->sin_addr.s_addr;
|
|
sin = (struct sockaddr_in *)&ep->com.remote_addr;
|
|
req->le.pport = sin->sin_port;
|
|
req->le.u.ipv4.pip = sin->sin_addr.s_addr;
|
|
req->tcb.t_state_to_astid =
|
|
htonl(FW_OFLD_CONNECTION_WR_T_STATE_V(TCP_SYN_SENT) |
|
|
FW_OFLD_CONNECTION_WR_ASTID_V(atid));
|
|
req->tcb.cplrxdataack_cplpassacceptrpl =
|
|
htons(FW_OFLD_CONNECTION_WR_CPLRXDATAACK_F);
|
|
req->tcb.tx_max = (__force __be32) jiffies;
|
|
req->tcb.rcv_adv = htons(1);
|
|
cxgb_best_mtu(ep->com.dev->rdev.lldi.mtus, ep->mtu, &mtu_idx,
|
|
enable_tcp_timestamps,
|
|
(ep->com.remote_addr.ss_family == AF_INET) ? 0 : 1);
|
|
wscale = cxgb_compute_wscale(rcv_win);
|
|
|
|
/*
|
|
* Specify the largest window that will fit in opt0. The
|
|
* remainder will be specified in the rx_data_ack.
|
|
*/
|
|
win = ep->rcv_win >> 10;
|
|
if (win > RCV_BUFSIZ_M)
|
|
win = RCV_BUFSIZ_M;
|
|
|
|
req->tcb.opt0 = (__force __be64) (TCAM_BYPASS_F |
|
|
(nocong ? NO_CONG_F : 0) |
|
|
KEEP_ALIVE_F |
|
|
DELACK_F |
|
|
WND_SCALE_V(wscale) |
|
|
MSS_IDX_V(mtu_idx) |
|
|
L2T_IDX_V(ep->l2t->idx) |
|
|
TX_CHAN_V(ep->tx_chan) |
|
|
SMAC_SEL_V(ep->smac_idx) |
|
|
DSCP_V(ep->tos >> 2) |
|
|
ULP_MODE_V(ULP_MODE_TCPDDP) |
|
|
RCV_BUFSIZ_V(win));
|
|
req->tcb.opt2 = (__force __be32) (PACE_V(1) |
|
|
TX_QUEUE_V(ep->com.dev->rdev.lldi.tx_modq[ep->tx_chan]) |
|
|
RX_CHANNEL_V(0) |
|
|
CCTRL_ECN_V(enable_ecn) |
|
|
RSS_QUEUE_VALID_F | RSS_QUEUE_V(ep->rss_qid));
|
|
if (enable_tcp_timestamps)
|
|
req->tcb.opt2 |= (__force __be32)TSTAMPS_EN_F;
|
|
if (enable_tcp_sack)
|
|
req->tcb.opt2 |= (__force __be32)SACK_EN_F;
|
|
if (wscale && enable_tcp_window_scaling)
|
|
req->tcb.opt2 |= (__force __be32)WND_SCALE_EN_F;
|
|
req->tcb.opt0 = cpu_to_be64((__force u64)req->tcb.opt0);
|
|
req->tcb.opt2 = cpu_to_be32((__force u32)req->tcb.opt2);
|
|
set_wr_txq(skb, CPL_PRIORITY_CONTROL, ep->ctrlq_idx);
|
|
set_bit(ACT_OFLD_CONN, &ep->com.history);
|
|
return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t);
|
|
}
|
|
|
|
/*
|
|
* Some of the error codes above implicitly indicate that there is no TID
|
|
* allocated with the result of an ACT_OPEN. We use this predicate to make
|
|
* that explicit.
|
|
*/
|
|
static inline int act_open_has_tid(int status)
|
|
{
|
|
return (status != CPL_ERR_TCAM_PARITY &&
|
|
status != CPL_ERR_TCAM_MISS &&
|
|
status != CPL_ERR_TCAM_FULL &&
|
|
status != CPL_ERR_CONN_EXIST_SYNRECV &&
|
|
status != CPL_ERR_CONN_EXIST);
|
|
}
|
|
|
|
static char *neg_adv_str(unsigned int status)
|
|
{
|
|
switch (status) {
|
|
case CPL_ERR_RTX_NEG_ADVICE:
|
|
return "Retransmit timeout";
|
|
case CPL_ERR_PERSIST_NEG_ADVICE:
|
|
return "Persist timeout";
|
|
case CPL_ERR_KEEPALV_NEG_ADVICE:
|
|
return "Keepalive timeout";
|
|
default:
|
|
return "Unknown";
|
|
}
|
|
}
|
|
|
|
static void set_tcp_window(struct c4iw_ep *ep, struct port_info *pi)
|
|
{
|
|
ep->snd_win = snd_win;
|
|
ep->rcv_win = rcv_win;
|
|
PDBG("%s snd_win %d rcv_win %d\n", __func__, ep->snd_win, ep->rcv_win);
|
|
}
|
|
|
|
#define ACT_OPEN_RETRY_COUNT 2
|
|
|
|
static int import_ep(struct c4iw_ep *ep, int iptype, __u8 *peer_ip,
|
|
struct dst_entry *dst, struct c4iw_dev *cdev,
|
|
bool clear_mpa_v1, enum chip_type adapter_type, u8 tos)
|
|
{
|
|
struct neighbour *n;
|
|
int err, step;
|
|
struct net_device *pdev;
|
|
|
|
n = dst_neigh_lookup(dst, peer_ip);
|
|
if (!n)
|
|
return -ENODEV;
|
|
|
|
rcu_read_lock();
|
|
err = -ENOMEM;
|
|
if (n->dev->flags & IFF_LOOPBACK) {
|
|
if (iptype == 4)
|
|
pdev = ip_dev_find(&init_net, *(__be32 *)peer_ip);
|
|
else if (IS_ENABLED(CONFIG_IPV6))
|
|
for_each_netdev(&init_net, pdev) {
|
|
if (ipv6_chk_addr(&init_net,
|
|
(struct in6_addr *)peer_ip,
|
|
pdev, 1))
|
|
break;
|
|
}
|
|
else
|
|
pdev = NULL;
|
|
|
|
if (!pdev) {
|
|
err = -ENODEV;
|
|
goto out;
|
|
}
|
|
ep->l2t = cxgb4_l2t_get(cdev->rdev.lldi.l2t,
|
|
n, pdev, rt_tos2priority(tos));
|
|
if (!ep->l2t) {
|
|
dev_put(pdev);
|
|
goto out;
|
|
}
|
|
ep->mtu = pdev->mtu;
|
|
ep->tx_chan = cxgb4_port_chan(pdev);
|
|
ep->smac_idx = cxgb4_tp_smt_idx(adapter_type,
|
|
cxgb4_port_viid(pdev));
|
|
step = cdev->rdev.lldi.ntxq /
|
|
cdev->rdev.lldi.nchan;
|
|
ep->txq_idx = cxgb4_port_idx(pdev) * step;
|
|
step = cdev->rdev.lldi.nrxq /
|
|
cdev->rdev.lldi.nchan;
|
|
ep->ctrlq_idx = cxgb4_port_idx(pdev);
|
|
ep->rss_qid = cdev->rdev.lldi.rxq_ids[
|
|
cxgb4_port_idx(pdev) * step];
|
|
set_tcp_window(ep, (struct port_info *)netdev_priv(pdev));
|
|
dev_put(pdev);
|
|
} else {
|
|
pdev = get_real_dev(n->dev);
|
|
ep->l2t = cxgb4_l2t_get(cdev->rdev.lldi.l2t,
|
|
n, pdev, 0);
|
|
if (!ep->l2t)
|
|
goto out;
|
|
ep->mtu = dst_mtu(dst);
|
|
ep->tx_chan = cxgb4_port_chan(pdev);
|
|
ep->smac_idx = cxgb4_tp_smt_idx(adapter_type,
|
|
cxgb4_port_viid(pdev));
|
|
step = cdev->rdev.lldi.ntxq /
|
|
cdev->rdev.lldi.nchan;
|
|
ep->txq_idx = cxgb4_port_idx(pdev) * step;
|
|
ep->ctrlq_idx = cxgb4_port_idx(pdev);
|
|
step = cdev->rdev.lldi.nrxq /
|
|
cdev->rdev.lldi.nchan;
|
|
ep->rss_qid = cdev->rdev.lldi.rxq_ids[
|
|
cxgb4_port_idx(pdev) * step];
|
|
set_tcp_window(ep, (struct port_info *)netdev_priv(pdev));
|
|
|
|
if (clear_mpa_v1) {
|
|
ep->retry_with_mpa_v1 = 0;
|
|
ep->tried_with_mpa_v1 = 0;
|
|
}
|
|
}
|
|
err = 0;
|
|
out:
|
|
rcu_read_unlock();
|
|
|
|
neigh_release(n);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int c4iw_reconnect(struct c4iw_ep *ep)
|
|
{
|
|
int err = 0;
|
|
int size = 0;
|
|
struct sockaddr_in *laddr = (struct sockaddr_in *)
|
|
&ep->com.cm_id->m_local_addr;
|
|
struct sockaddr_in *raddr = (struct sockaddr_in *)
|
|
&ep->com.cm_id->m_remote_addr;
|
|
struct sockaddr_in6 *laddr6 = (struct sockaddr_in6 *)
|
|
&ep->com.cm_id->m_local_addr;
|
|
struct sockaddr_in6 *raddr6 = (struct sockaddr_in6 *)
|
|
&ep->com.cm_id->m_remote_addr;
|
|
int iptype;
|
|
__u8 *ra;
|
|
|
|
PDBG("%s qp %p cm_id %p\n", __func__, ep->com.qp, ep->com.cm_id);
|
|
init_timer(&ep->timer);
|
|
c4iw_init_wr_wait(&ep->com.wr_wait);
|
|
|
|
/* When MPA revision is different on nodes, the node with MPA_rev=2
|
|
* tries to reconnect with MPA_rev 1 for the same EP through
|
|
* c4iw_reconnect(), where the same EP is assigned with new tid for
|
|
* further connection establishment. As we are using the same EP pointer
|
|
* for reconnect, few skbs are used during the previous c4iw_connect(),
|
|
* which leaves the EP with inadequate skbs for further
|
|
* c4iw_reconnect(), Further causing an assert BUG_ON() due to empty
|
|
* skb_list() during peer_abort(). Allocate skbs which is already used.
|
|
*/
|
|
size = (CN_MAX_CON_BUF - skb_queue_len(&ep->com.ep_skb_list));
|
|
if (alloc_ep_skb_list(&ep->com.ep_skb_list, size)) {
|
|
err = -ENOMEM;
|
|
goto fail1;
|
|
}
|
|
|
|
/*
|
|
* Allocate an active TID to initiate a TCP connection.
|
|
*/
|
|
ep->atid = cxgb4_alloc_atid(ep->com.dev->rdev.lldi.tids, ep);
|
|
if (ep->atid == -1) {
|
|
pr_err("%s - cannot alloc atid.\n", __func__);
|
|
err = -ENOMEM;
|
|
goto fail2;
|
|
}
|
|
insert_handle(ep->com.dev, &ep->com.dev->atid_idr, ep, ep->atid);
|
|
|
|
/* find a route */
|
|
if (ep->com.cm_id->m_local_addr.ss_family == AF_INET) {
|
|
ep->dst = cxgb_find_route(&ep->com.dev->rdev.lldi, get_real_dev,
|
|
laddr->sin_addr.s_addr,
|
|
raddr->sin_addr.s_addr,
|
|
laddr->sin_port,
|
|
raddr->sin_port, ep->com.cm_id->tos);
|
|
iptype = 4;
|
|
ra = (__u8 *)&raddr->sin_addr;
|
|
} else {
|
|
ep->dst = cxgb_find_route6(&ep->com.dev->rdev.lldi,
|
|
get_real_dev,
|
|
laddr6->sin6_addr.s6_addr,
|
|
raddr6->sin6_addr.s6_addr,
|
|
laddr6->sin6_port,
|
|
raddr6->sin6_port, 0,
|
|
raddr6->sin6_scope_id);
|
|
iptype = 6;
|
|
ra = (__u8 *)&raddr6->sin6_addr;
|
|
}
|
|
if (!ep->dst) {
|
|
pr_err("%s - cannot find route.\n", __func__);
|
|
err = -EHOSTUNREACH;
|
|
goto fail3;
|
|
}
|
|
err = import_ep(ep, iptype, ra, ep->dst, ep->com.dev, false,
|
|
ep->com.dev->rdev.lldi.adapter_type,
|
|
ep->com.cm_id->tos);
|
|
if (err) {
|
|
pr_err("%s - cannot alloc l2e.\n", __func__);
|
|
goto fail4;
|
|
}
|
|
|
|
PDBG("%s txq_idx %u tx_chan %u smac_idx %u rss_qid %u l2t_idx %u\n",
|
|
__func__, ep->txq_idx, ep->tx_chan, ep->smac_idx, ep->rss_qid,
|
|
ep->l2t->idx);
|
|
|
|
state_set(&ep->com, CONNECTING);
|
|
ep->tos = ep->com.cm_id->tos;
|
|
|
|
/* send connect request to rnic */
|
|
err = send_connect(ep);
|
|
if (!err)
|
|
goto out;
|
|
|
|
cxgb4_l2t_release(ep->l2t);
|
|
fail4:
|
|
dst_release(ep->dst);
|
|
fail3:
|
|
remove_handle(ep->com.dev, &ep->com.dev->atid_idr, ep->atid);
|
|
cxgb4_free_atid(ep->com.dev->rdev.lldi.tids, ep->atid);
|
|
fail2:
|
|
/*
|
|
* remember to send notification to upper layer.
|
|
* We are in here so the upper layer is not aware that this is
|
|
* re-connect attempt and so, upper layer is still waiting for
|
|
* response of 1st connect request.
|
|
*/
|
|
connect_reply_upcall(ep, -ECONNRESET);
|
|
fail1:
|
|
c4iw_put_ep(&ep->com);
|
|
out:
|
|
return err;
|
|
}
|
|
|
|
static int act_open_rpl(struct c4iw_dev *dev, struct sk_buff *skb)
|
|
{
|
|
struct c4iw_ep *ep;
|
|
struct cpl_act_open_rpl *rpl = cplhdr(skb);
|
|
unsigned int atid = TID_TID_G(AOPEN_ATID_G(
|
|
ntohl(rpl->atid_status)));
|
|
struct tid_info *t = dev->rdev.lldi.tids;
|
|
int status = AOPEN_STATUS_G(ntohl(rpl->atid_status));
|
|
struct sockaddr_in *la;
|
|
struct sockaddr_in *ra;
|
|
struct sockaddr_in6 *la6;
|
|
struct sockaddr_in6 *ra6;
|
|
int ret = 0;
|
|
|
|
ep = lookup_atid(t, atid);
|
|
la = (struct sockaddr_in *)&ep->com.local_addr;
|
|
ra = (struct sockaddr_in *)&ep->com.remote_addr;
|
|
la6 = (struct sockaddr_in6 *)&ep->com.local_addr;
|
|
ra6 = (struct sockaddr_in6 *)&ep->com.remote_addr;
|
|
|
|
PDBG("%s ep %p atid %u status %u errno %d\n", __func__, ep, atid,
|
|
status, status2errno(status));
|
|
|
|
if (cxgb_is_neg_adv(status)) {
|
|
PDBG("%s Connection problems for atid %u status %u (%s)\n",
|
|
__func__, atid, status, neg_adv_str(status));
|
|
ep->stats.connect_neg_adv++;
|
|
mutex_lock(&dev->rdev.stats.lock);
|
|
dev->rdev.stats.neg_adv++;
|
|
mutex_unlock(&dev->rdev.stats.lock);
|
|
return 0;
|
|
}
|
|
|
|
set_bit(ACT_OPEN_RPL, &ep->com.history);
|
|
|
|
/*
|
|
* Log interesting failures.
|
|
*/
|
|
switch (status) {
|
|
case CPL_ERR_CONN_RESET:
|
|
case CPL_ERR_CONN_TIMEDOUT:
|
|
break;
|
|
case CPL_ERR_TCAM_FULL:
|
|
mutex_lock(&dev->rdev.stats.lock);
|
|
dev->rdev.stats.tcam_full++;
|
|
mutex_unlock(&dev->rdev.stats.lock);
|
|
if (ep->com.local_addr.ss_family == AF_INET &&
|
|
dev->rdev.lldi.enable_fw_ofld_conn) {
|
|
ret = send_fw_act_open_req(ep, TID_TID_G(AOPEN_ATID_G(
|
|
ntohl(rpl->atid_status))));
|
|
if (ret)
|
|
goto fail;
|
|
return 0;
|
|
}
|
|
break;
|
|
case CPL_ERR_CONN_EXIST:
|
|
if (ep->retry_count++ < ACT_OPEN_RETRY_COUNT) {
|
|
set_bit(ACT_RETRY_INUSE, &ep->com.history);
|
|
if (ep->com.remote_addr.ss_family == AF_INET6) {
|
|
struct sockaddr_in6 *sin6 =
|
|
(struct sockaddr_in6 *)
|
|
&ep->com.local_addr;
|
|
cxgb4_clip_release(
|
|
ep->com.dev->rdev.lldi.ports[0],
|
|
(const u32 *)
|
|
&sin6->sin6_addr.s6_addr, 1);
|
|
}
|
|
remove_handle(ep->com.dev, &ep->com.dev->atid_idr,
|
|
atid);
|
|
cxgb4_free_atid(t, atid);
|
|
dst_release(ep->dst);
|
|
cxgb4_l2t_release(ep->l2t);
|
|
c4iw_reconnect(ep);
|
|
return 0;
|
|
}
|
|
break;
|
|
default:
|
|
if (ep->com.local_addr.ss_family == AF_INET) {
|
|
pr_info("Active open failure - atid %u status %u errno %d %pI4:%u->%pI4:%u\n",
|
|
atid, status, status2errno(status),
|
|
&la->sin_addr.s_addr, ntohs(la->sin_port),
|
|
&ra->sin_addr.s_addr, ntohs(ra->sin_port));
|
|
} else {
|
|
pr_info("Active open failure - atid %u status %u errno %d %pI6:%u->%pI6:%u\n",
|
|
atid, status, status2errno(status),
|
|
la6->sin6_addr.s6_addr, ntohs(la6->sin6_port),
|
|
ra6->sin6_addr.s6_addr, ntohs(ra6->sin6_port));
|
|
}
|
|
break;
|
|
}
|
|
|
|
fail:
|
|
connect_reply_upcall(ep, status2errno(status));
|
|
state_set(&ep->com, DEAD);
|
|
|
|
if (ep->com.remote_addr.ss_family == AF_INET6) {
|
|
struct sockaddr_in6 *sin6 =
|
|
(struct sockaddr_in6 *)&ep->com.local_addr;
|
|
cxgb4_clip_release(ep->com.dev->rdev.lldi.ports[0],
|
|
(const u32 *)&sin6->sin6_addr.s6_addr, 1);
|
|
}
|
|
if (status && act_open_has_tid(status))
|
|
cxgb4_remove_tid(ep->com.dev->rdev.lldi.tids, 0, GET_TID(rpl));
|
|
|
|
remove_handle(ep->com.dev, &ep->com.dev->atid_idr, atid);
|
|
cxgb4_free_atid(t, atid);
|
|
dst_release(ep->dst);
|
|
cxgb4_l2t_release(ep->l2t);
|
|
c4iw_put_ep(&ep->com);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int pass_open_rpl(struct c4iw_dev *dev, struct sk_buff *skb)
|
|
{
|
|
struct cpl_pass_open_rpl *rpl = cplhdr(skb);
|
|
unsigned int stid = GET_TID(rpl);
|
|
struct c4iw_listen_ep *ep = get_ep_from_stid(dev, stid);
|
|
|
|
if (!ep) {
|
|
PDBG("%s stid %d lookup failure!\n", __func__, stid);
|
|
goto out;
|
|
}
|
|
PDBG("%s ep %p status %d error %d\n", __func__, ep,
|
|
rpl->status, status2errno(rpl->status));
|
|
c4iw_wake_up(&ep->com.wr_wait, status2errno(rpl->status));
|
|
c4iw_put_ep(&ep->com);
|
|
out:
|
|
return 0;
|
|
}
|
|
|
|
static int close_listsrv_rpl(struct c4iw_dev *dev, struct sk_buff *skb)
|
|
{
|
|
struct cpl_close_listsvr_rpl *rpl = cplhdr(skb);
|
|
unsigned int stid = GET_TID(rpl);
|
|
struct c4iw_listen_ep *ep = get_ep_from_stid(dev, stid);
|
|
|
|
PDBG("%s ep %p\n", __func__, ep);
|
|
c4iw_wake_up(&ep->com.wr_wait, status2errno(rpl->status));
|
|
c4iw_put_ep(&ep->com);
|
|
return 0;
|
|
}
|
|
|
|
static int accept_cr(struct c4iw_ep *ep, struct sk_buff *skb,
|
|
struct cpl_pass_accept_req *req)
|
|
{
|
|
struct cpl_pass_accept_rpl *rpl;
|
|
unsigned int mtu_idx;
|
|
u64 opt0;
|
|
u32 opt2;
|
|
u32 wscale;
|
|
struct cpl_t5_pass_accept_rpl *rpl5 = NULL;
|
|
int win;
|
|
enum chip_type adapter_type = ep->com.dev->rdev.lldi.adapter_type;
|
|
|
|
PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
|
|
BUG_ON(skb_cloned(skb));
|
|
|
|
skb_get(skb);
|
|
rpl = cplhdr(skb);
|
|
if (!is_t4(adapter_type)) {
|
|
skb_trim(skb, roundup(sizeof(*rpl5), 16));
|
|
rpl5 = (void *)rpl;
|
|
INIT_TP_WR(rpl5, ep->hwtid);
|
|
} else {
|
|
skb_trim(skb, sizeof(*rpl));
|
|
INIT_TP_WR(rpl, ep->hwtid);
|
|
}
|
|
OPCODE_TID(rpl) = cpu_to_be32(MK_OPCODE_TID(CPL_PASS_ACCEPT_RPL,
|
|
ep->hwtid));
|
|
|
|
cxgb_best_mtu(ep->com.dev->rdev.lldi.mtus, ep->mtu, &mtu_idx,
|
|
enable_tcp_timestamps && req->tcpopt.tstamp,
|
|
(ep->com.remote_addr.ss_family == AF_INET) ? 0 : 1);
|
|
wscale = cxgb_compute_wscale(rcv_win);
|
|
|
|
/*
|
|
* Specify the largest window that will fit in opt0. The
|
|
* remainder will be specified in the rx_data_ack.
|
|
*/
|
|
win = ep->rcv_win >> 10;
|
|
if (win > RCV_BUFSIZ_M)
|
|
win = RCV_BUFSIZ_M;
|
|
opt0 = (nocong ? NO_CONG_F : 0) |
|
|
KEEP_ALIVE_F |
|
|
DELACK_F |
|
|
WND_SCALE_V(wscale) |
|
|
MSS_IDX_V(mtu_idx) |
|
|
L2T_IDX_V(ep->l2t->idx) |
|
|
TX_CHAN_V(ep->tx_chan) |
|
|
SMAC_SEL_V(ep->smac_idx) |
|
|
DSCP_V(ep->tos >> 2) |
|
|
ULP_MODE_V(ULP_MODE_TCPDDP) |
|
|
RCV_BUFSIZ_V(win);
|
|
opt2 = RX_CHANNEL_V(0) |
|
|
RSS_QUEUE_VALID_F | RSS_QUEUE_V(ep->rss_qid);
|
|
|
|
if (enable_tcp_timestamps && req->tcpopt.tstamp)
|
|
opt2 |= TSTAMPS_EN_F;
|
|
if (enable_tcp_sack && req->tcpopt.sack)
|
|
opt2 |= SACK_EN_F;
|
|
if (wscale && enable_tcp_window_scaling)
|
|
opt2 |= WND_SCALE_EN_F;
|
|
if (enable_ecn) {
|
|
const struct tcphdr *tcph;
|
|
u32 hlen = ntohl(req->hdr_len);
|
|
|
|
if (CHELSIO_CHIP_VERSION(adapter_type) <= CHELSIO_T5)
|
|
tcph = (const void *)(req + 1) + ETH_HDR_LEN_G(hlen) +
|
|
IP_HDR_LEN_G(hlen);
|
|
else
|
|
tcph = (const void *)(req + 1) +
|
|
T6_ETH_HDR_LEN_G(hlen) + T6_IP_HDR_LEN_G(hlen);
|
|
if (tcph->ece && tcph->cwr)
|
|
opt2 |= CCTRL_ECN_V(1);
|
|
}
|
|
if (CHELSIO_CHIP_VERSION(adapter_type) > CHELSIO_T4) {
|
|
u32 isn = (prandom_u32() & ~7UL) - 1;
|
|
opt2 |= T5_OPT_2_VALID_F;
|
|
opt2 |= CONG_CNTRL_V(CONG_ALG_TAHOE);
|
|
opt2 |= T5_ISS_F;
|
|
rpl5 = (void *)rpl;
|
|
memset(&rpl5->iss, 0, roundup(sizeof(*rpl5)-sizeof(*rpl), 16));
|
|
if (peer2peer)
|
|
isn += 4;
|
|
rpl5->iss = cpu_to_be32(isn);
|
|
PDBG("%s iss %u\n", __func__, be32_to_cpu(rpl5->iss));
|
|
}
|
|
|
|
rpl->opt0 = cpu_to_be64(opt0);
|
|
rpl->opt2 = cpu_to_be32(opt2);
|
|
set_wr_txq(skb, CPL_PRIORITY_SETUP, ep->ctrlq_idx);
|
|
t4_set_arp_err_handler(skb, ep, pass_accept_rpl_arp_failure);
|
|
|
|
return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t);
|
|
}
|
|
|
|
static void reject_cr(struct c4iw_dev *dev, u32 hwtid, struct sk_buff *skb)
|
|
{
|
|
PDBG("%s c4iw_dev %p tid %u\n", __func__, dev, hwtid);
|
|
BUG_ON(skb_cloned(skb));
|
|
skb_trim(skb, sizeof(struct cpl_tid_release));
|
|
release_tid(&dev->rdev, hwtid, skb);
|
|
return;
|
|
}
|
|
|
|
static int pass_accept_req(struct c4iw_dev *dev, struct sk_buff *skb)
|
|
{
|
|
struct c4iw_ep *child_ep = NULL, *parent_ep;
|
|
struct cpl_pass_accept_req *req = cplhdr(skb);
|
|
unsigned int stid = PASS_OPEN_TID_G(ntohl(req->tos_stid));
|
|
struct tid_info *t = dev->rdev.lldi.tids;
|
|
unsigned int hwtid = GET_TID(req);
|
|
struct dst_entry *dst;
|
|
__u8 local_ip[16], peer_ip[16];
|
|
__be16 local_port, peer_port;
|
|
struct sockaddr_in6 *sin6;
|
|
int err;
|
|
u16 peer_mss = ntohs(req->tcpopt.mss);
|
|
int iptype;
|
|
unsigned short hdrs;
|
|
u8 tos = PASS_OPEN_TOS_G(ntohl(req->tos_stid));
|
|
|
|
parent_ep = (struct c4iw_ep *)get_ep_from_stid(dev, stid);
|
|
if (!parent_ep) {
|
|
PDBG("%s connect request on invalid stid %d\n", __func__, stid);
|
|
goto reject;
|
|
}
|
|
|
|
if (state_read(&parent_ep->com) != LISTEN) {
|
|
PDBG("%s - listening ep not in LISTEN\n", __func__);
|
|
goto reject;
|
|
}
|
|
|
|
cxgb_get_4tuple(req, parent_ep->com.dev->rdev.lldi.adapter_type,
|
|
&iptype, local_ip, peer_ip, &local_port, &peer_port);
|
|
|
|
/* Find output route */
|
|
if (iptype == 4) {
|
|
PDBG("%s parent ep %p hwtid %u laddr %pI4 raddr %pI4 lport %d rport %d peer_mss %d\n"
|
|
, __func__, parent_ep, hwtid,
|
|
local_ip, peer_ip, ntohs(local_port),
|
|
ntohs(peer_port), peer_mss);
|
|
dst = cxgb_find_route(&dev->rdev.lldi, get_real_dev,
|
|
*(__be32 *)local_ip, *(__be32 *)peer_ip,
|
|
local_port, peer_port, tos);
|
|
} else {
|
|
PDBG("%s parent ep %p hwtid %u laddr %pI6 raddr %pI6 lport %d rport %d peer_mss %d\n"
|
|
, __func__, parent_ep, hwtid,
|
|
local_ip, peer_ip, ntohs(local_port),
|
|
ntohs(peer_port), peer_mss);
|
|
dst = cxgb_find_route6(&dev->rdev.lldi, get_real_dev,
|
|
local_ip, peer_ip, local_port, peer_port,
|
|
PASS_OPEN_TOS_G(ntohl(req->tos_stid)),
|
|
((struct sockaddr_in6 *)
|
|
&parent_ep->com.local_addr)->sin6_scope_id);
|
|
}
|
|
if (!dst) {
|
|
printk(KERN_ERR MOD "%s - failed to find dst entry!\n",
|
|
__func__);
|
|
goto reject;
|
|
}
|
|
|
|
child_ep = alloc_ep(sizeof(*child_ep), GFP_KERNEL);
|
|
if (!child_ep) {
|
|
printk(KERN_ERR MOD "%s - failed to allocate ep entry!\n",
|
|
__func__);
|
|
dst_release(dst);
|
|
goto reject;
|
|
}
|
|
|
|
err = import_ep(child_ep, iptype, peer_ip, dst, dev, false,
|
|
parent_ep->com.dev->rdev.lldi.adapter_type, tos);
|
|
if (err) {
|
|
printk(KERN_ERR MOD "%s - failed to allocate l2t entry!\n",
|
|
__func__);
|
|
dst_release(dst);
|
|
kfree(child_ep);
|
|
goto reject;
|
|
}
|
|
|
|
hdrs = sizeof(struct iphdr) + sizeof(struct tcphdr) +
|
|
((enable_tcp_timestamps && req->tcpopt.tstamp) ? 12 : 0);
|
|
if (peer_mss && child_ep->mtu > (peer_mss + hdrs))
|
|
child_ep->mtu = peer_mss + hdrs;
|
|
|
|
skb_queue_head_init(&child_ep->com.ep_skb_list);
|
|
if (alloc_ep_skb_list(&child_ep->com.ep_skb_list, CN_MAX_CON_BUF))
|
|
goto fail;
|
|
|
|
state_set(&child_ep->com, CONNECTING);
|
|
child_ep->com.dev = dev;
|
|
child_ep->com.cm_id = NULL;
|
|
|
|
if (iptype == 4) {
|
|
struct sockaddr_in *sin = (struct sockaddr_in *)
|
|
&child_ep->com.local_addr;
|
|
|
|
sin->sin_family = PF_INET;
|
|
sin->sin_port = local_port;
|
|
sin->sin_addr.s_addr = *(__be32 *)local_ip;
|
|
|
|
sin = (struct sockaddr_in *)&child_ep->com.local_addr;
|
|
sin->sin_family = PF_INET;
|
|
sin->sin_port = ((struct sockaddr_in *)
|
|
&parent_ep->com.local_addr)->sin_port;
|
|
sin->sin_addr.s_addr = *(__be32 *)local_ip;
|
|
|
|
sin = (struct sockaddr_in *)&child_ep->com.remote_addr;
|
|
sin->sin_family = PF_INET;
|
|
sin->sin_port = peer_port;
|
|
sin->sin_addr.s_addr = *(__be32 *)peer_ip;
|
|
} else {
|
|
sin6 = (struct sockaddr_in6 *)&child_ep->com.local_addr;
|
|
sin6->sin6_family = PF_INET6;
|
|
sin6->sin6_port = local_port;
|
|
memcpy(sin6->sin6_addr.s6_addr, local_ip, 16);
|
|
|
|
sin6 = (struct sockaddr_in6 *)&child_ep->com.local_addr;
|
|
sin6->sin6_family = PF_INET6;
|
|
sin6->sin6_port = ((struct sockaddr_in6 *)
|
|
&parent_ep->com.local_addr)->sin6_port;
|
|
memcpy(sin6->sin6_addr.s6_addr, local_ip, 16);
|
|
|
|
sin6 = (struct sockaddr_in6 *)&child_ep->com.remote_addr;
|
|
sin6->sin6_family = PF_INET6;
|
|
sin6->sin6_port = peer_port;
|
|
memcpy(sin6->sin6_addr.s6_addr, peer_ip, 16);
|
|
}
|
|
|
|
c4iw_get_ep(&parent_ep->com);
|
|
child_ep->parent_ep = parent_ep;
|
|
child_ep->tos = tos;
|
|
child_ep->dst = dst;
|
|
child_ep->hwtid = hwtid;
|
|
|
|
PDBG("%s tx_chan %u smac_idx %u rss_qid %u\n", __func__,
|
|
child_ep->tx_chan, child_ep->smac_idx, child_ep->rss_qid);
|
|
|
|
init_timer(&child_ep->timer);
|
|
cxgb4_insert_tid(t, child_ep, hwtid);
|
|
insert_ep_tid(child_ep);
|
|
if (accept_cr(child_ep, skb, req)) {
|
|
c4iw_put_ep(&parent_ep->com);
|
|
release_ep_resources(child_ep);
|
|
} else {
|
|
set_bit(PASS_ACCEPT_REQ, &child_ep->com.history);
|
|
}
|
|
if (iptype == 6) {
|
|
sin6 = (struct sockaddr_in6 *)&child_ep->com.local_addr;
|
|
cxgb4_clip_get(child_ep->com.dev->rdev.lldi.ports[0],
|
|
(const u32 *)&sin6->sin6_addr.s6_addr, 1);
|
|
}
|
|
goto out;
|
|
fail:
|
|
c4iw_put_ep(&child_ep->com);
|
|
reject:
|
|
reject_cr(dev, hwtid, skb);
|
|
if (parent_ep)
|
|
c4iw_put_ep(&parent_ep->com);
|
|
out:
|
|
return 0;
|
|
}
|
|
|
|
static int pass_establish(struct c4iw_dev *dev, struct sk_buff *skb)
|
|
{
|
|
struct c4iw_ep *ep;
|
|
struct cpl_pass_establish *req = cplhdr(skb);
|
|
unsigned int tid = GET_TID(req);
|
|
int ret;
|
|
|
|
ep = get_ep_from_tid(dev, tid);
|
|
PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
|
|
ep->snd_seq = be32_to_cpu(req->snd_isn);
|
|
ep->rcv_seq = be32_to_cpu(req->rcv_isn);
|
|
|
|
PDBG("%s ep %p hwtid %u tcp_opt 0x%02x\n", __func__, ep, tid,
|
|
ntohs(req->tcp_opt));
|
|
|
|
set_emss(ep, ntohs(req->tcp_opt));
|
|
|
|
dst_confirm(ep->dst);
|
|
mutex_lock(&ep->com.mutex);
|
|
ep->com.state = MPA_REQ_WAIT;
|
|
start_ep_timer(ep);
|
|
set_bit(PASS_ESTAB, &ep->com.history);
|
|
ret = send_flowc(ep);
|
|
mutex_unlock(&ep->com.mutex);
|
|
if (ret)
|
|
c4iw_ep_disconnect(ep, 1, GFP_KERNEL);
|
|
c4iw_put_ep(&ep->com);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int peer_close(struct c4iw_dev *dev, struct sk_buff *skb)
|
|
{
|
|
struct cpl_peer_close *hdr = cplhdr(skb);
|
|
struct c4iw_ep *ep;
|
|
struct c4iw_qp_attributes attrs;
|
|
int disconnect = 1;
|
|
int release = 0;
|
|
unsigned int tid = GET_TID(hdr);
|
|
int ret;
|
|
|
|
ep = get_ep_from_tid(dev, tid);
|
|
if (!ep)
|
|
return 0;
|
|
|
|
PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
|
|
dst_confirm(ep->dst);
|
|
|
|
set_bit(PEER_CLOSE, &ep->com.history);
|
|
mutex_lock(&ep->com.mutex);
|
|
switch (ep->com.state) {
|
|
case MPA_REQ_WAIT:
|
|
__state_set(&ep->com, CLOSING);
|
|
break;
|
|
case MPA_REQ_SENT:
|
|
__state_set(&ep->com, CLOSING);
|
|
connect_reply_upcall(ep, -ECONNRESET);
|
|
break;
|
|
case MPA_REQ_RCVD:
|
|
|
|
/*
|
|
* We're gonna mark this puppy DEAD, but keep
|
|
* the reference on it until the ULP accepts or
|
|
* rejects the CR. Also wake up anyone waiting
|
|
* in rdma connection migration (see c4iw_accept_cr()).
|
|
*/
|
|
__state_set(&ep->com, CLOSING);
|
|
PDBG("waking up ep %p tid %u\n", ep, ep->hwtid);
|
|
c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET);
|
|
break;
|
|
case MPA_REP_SENT:
|
|
__state_set(&ep->com, CLOSING);
|
|
PDBG("waking up ep %p tid %u\n", ep, ep->hwtid);
|
|
c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET);
|
|
break;
|
|
case FPDU_MODE:
|
|
start_ep_timer(ep);
|
|
__state_set(&ep->com, CLOSING);
|
|
attrs.next_state = C4IW_QP_STATE_CLOSING;
|
|
ret = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp,
|
|
C4IW_QP_ATTR_NEXT_STATE, &attrs, 1);
|
|
if (ret != -ECONNRESET) {
|
|
peer_close_upcall(ep);
|
|
disconnect = 1;
|
|
}
|
|
break;
|
|
case ABORTING:
|
|
disconnect = 0;
|
|
break;
|
|
case CLOSING:
|
|
__state_set(&ep->com, MORIBUND);
|
|
disconnect = 0;
|
|
break;
|
|
case MORIBUND:
|
|
(void)stop_ep_timer(ep);
|
|
if (ep->com.cm_id && ep->com.qp) {
|
|
attrs.next_state = C4IW_QP_STATE_IDLE;
|
|
c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp,
|
|
C4IW_QP_ATTR_NEXT_STATE, &attrs, 1);
|
|
}
|
|
close_complete_upcall(ep, 0);
|
|
__state_set(&ep->com, DEAD);
|
|
release = 1;
|
|
disconnect = 0;
|
|
break;
|
|
case DEAD:
|
|
disconnect = 0;
|
|
break;
|
|
default:
|
|
BUG_ON(1);
|
|
}
|
|
mutex_unlock(&ep->com.mutex);
|
|
if (disconnect)
|
|
c4iw_ep_disconnect(ep, 0, GFP_KERNEL);
|
|
if (release)
|
|
release_ep_resources(ep);
|
|
c4iw_put_ep(&ep->com);
|
|
return 0;
|
|
}
|
|
|
|
static int peer_abort(struct c4iw_dev *dev, struct sk_buff *skb)
|
|
{
|
|
struct cpl_abort_req_rss *req = cplhdr(skb);
|
|
struct c4iw_ep *ep;
|
|
struct sk_buff *rpl_skb;
|
|
struct c4iw_qp_attributes attrs;
|
|
int ret;
|
|
int release = 0;
|
|
unsigned int tid = GET_TID(req);
|
|
u32 len = roundup(sizeof(struct cpl_abort_rpl), 16);
|
|
|
|
ep = get_ep_from_tid(dev, tid);
|
|
if (!ep)
|
|
return 0;
|
|
|
|
if (cxgb_is_neg_adv(req->status)) {
|
|
PDBG("%s Negative advice on abort- tid %u status %d (%s)\n",
|
|
__func__, ep->hwtid, req->status,
|
|
neg_adv_str(req->status));
|
|
ep->stats.abort_neg_adv++;
|
|
mutex_lock(&dev->rdev.stats.lock);
|
|
dev->rdev.stats.neg_adv++;
|
|
mutex_unlock(&dev->rdev.stats.lock);
|
|
goto deref_ep;
|
|
}
|
|
PDBG("%s ep %p tid %u state %u\n", __func__, ep, ep->hwtid,
|
|
ep->com.state);
|
|
set_bit(PEER_ABORT, &ep->com.history);
|
|
|
|
/*
|
|
* Wake up any threads in rdma_init() or rdma_fini().
|
|
* However, this is not needed if com state is just
|
|
* MPA_REQ_SENT
|
|
*/
|
|
if (ep->com.state != MPA_REQ_SENT)
|
|
c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET);
|
|
|
|
mutex_lock(&ep->com.mutex);
|
|
switch (ep->com.state) {
|
|
case CONNECTING:
|
|
c4iw_put_ep(&ep->parent_ep->com);
|
|
break;
|
|
case MPA_REQ_WAIT:
|
|
(void)stop_ep_timer(ep);
|
|
break;
|
|
case MPA_REQ_SENT:
|
|
(void)stop_ep_timer(ep);
|
|
if (mpa_rev == 1 || (mpa_rev == 2 && ep->tried_with_mpa_v1))
|
|
connect_reply_upcall(ep, -ECONNRESET);
|
|
else {
|
|
/*
|
|
* we just don't send notification upwards because we
|
|
* want to retry with mpa_v1 without upper layers even
|
|
* knowing it.
|
|
*
|
|
* do some housekeeping so as to re-initiate the
|
|
* connection
|
|
*/
|
|
PDBG("%s: mpa_rev=%d. Retrying with mpav1\n", __func__,
|
|
mpa_rev);
|
|
ep->retry_with_mpa_v1 = 1;
|
|
}
|
|
break;
|
|
case MPA_REP_SENT:
|
|
break;
|
|
case MPA_REQ_RCVD:
|
|
break;
|
|
case MORIBUND:
|
|
case CLOSING:
|
|
stop_ep_timer(ep);
|
|
/*FALLTHROUGH*/
|
|
case FPDU_MODE:
|
|
if (ep->com.cm_id && ep->com.qp) {
|
|
attrs.next_state = C4IW_QP_STATE_ERROR;
|
|
ret = c4iw_modify_qp(ep->com.qp->rhp,
|
|
ep->com.qp, C4IW_QP_ATTR_NEXT_STATE,
|
|
&attrs, 1);
|
|
if (ret)
|
|
printk(KERN_ERR MOD
|
|
"%s - qp <- error failed!\n",
|
|
__func__);
|
|
}
|
|
peer_abort_upcall(ep);
|
|
break;
|
|
case ABORTING:
|
|
break;
|
|
case DEAD:
|
|
PDBG("%s PEER_ABORT IN DEAD STATE!!!!\n", __func__);
|
|
mutex_unlock(&ep->com.mutex);
|
|
goto deref_ep;
|
|
default:
|
|
BUG_ON(1);
|
|
break;
|
|
}
|
|
dst_confirm(ep->dst);
|
|
if (ep->com.state != ABORTING) {
|
|
__state_set(&ep->com, DEAD);
|
|
/* we don't release if we want to retry with mpa_v1 */
|
|
if (!ep->retry_with_mpa_v1)
|
|
release = 1;
|
|
}
|
|
mutex_unlock(&ep->com.mutex);
|
|
|
|
rpl_skb = skb_dequeue(&ep->com.ep_skb_list);
|
|
if (WARN_ON(!rpl_skb)) {
|
|
release = 1;
|
|
goto out;
|
|
}
|
|
|
|
cxgb_mk_abort_rpl(rpl_skb, len, ep->hwtid, ep->txq_idx);
|
|
|
|
c4iw_ofld_send(&ep->com.dev->rdev, rpl_skb);
|
|
out:
|
|
if (release)
|
|
release_ep_resources(ep);
|
|
else if (ep->retry_with_mpa_v1) {
|
|
if (ep->com.remote_addr.ss_family == AF_INET6) {
|
|
struct sockaddr_in6 *sin6 =
|
|
(struct sockaddr_in6 *)
|
|
&ep->com.local_addr;
|
|
cxgb4_clip_release(
|
|
ep->com.dev->rdev.lldi.ports[0],
|
|
(const u32 *)&sin6->sin6_addr.s6_addr,
|
|
1);
|
|
}
|
|
remove_handle(ep->com.dev, &ep->com.dev->hwtid_idr, ep->hwtid);
|
|
cxgb4_remove_tid(ep->com.dev->rdev.lldi.tids, 0, ep->hwtid);
|
|
dst_release(ep->dst);
|
|
cxgb4_l2t_release(ep->l2t);
|
|
c4iw_reconnect(ep);
|
|
}
|
|
|
|
deref_ep:
|
|
c4iw_put_ep(&ep->com);
|
|
/* Dereferencing ep, referenced in peer_abort_intr() */
|
|
c4iw_put_ep(&ep->com);
|
|
return 0;
|
|
}
|
|
|
|
static int close_con_rpl(struct c4iw_dev *dev, struct sk_buff *skb)
|
|
{
|
|
struct c4iw_ep *ep;
|
|
struct c4iw_qp_attributes attrs;
|
|
struct cpl_close_con_rpl *rpl = cplhdr(skb);
|
|
int release = 0;
|
|
unsigned int tid = GET_TID(rpl);
|
|
|
|
ep = get_ep_from_tid(dev, tid);
|
|
if (!ep)
|
|
return 0;
|
|
|
|
PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
|
|
BUG_ON(!ep);
|
|
|
|
/* The cm_id may be null if we failed to connect */
|
|
mutex_lock(&ep->com.mutex);
|
|
set_bit(CLOSE_CON_RPL, &ep->com.history);
|
|
switch (ep->com.state) {
|
|
case CLOSING:
|
|
__state_set(&ep->com, MORIBUND);
|
|
break;
|
|
case MORIBUND:
|
|
(void)stop_ep_timer(ep);
|
|
if ((ep->com.cm_id) && (ep->com.qp)) {
|
|
attrs.next_state = C4IW_QP_STATE_IDLE;
|
|
c4iw_modify_qp(ep->com.qp->rhp,
|
|
ep->com.qp,
|
|
C4IW_QP_ATTR_NEXT_STATE,
|
|
&attrs, 1);
|
|
}
|
|
close_complete_upcall(ep, 0);
|
|
__state_set(&ep->com, DEAD);
|
|
release = 1;
|
|
break;
|
|
case ABORTING:
|
|
case DEAD:
|
|
break;
|
|
default:
|
|
BUG_ON(1);
|
|
break;
|
|
}
|
|
mutex_unlock(&ep->com.mutex);
|
|
if (release)
|
|
release_ep_resources(ep);
|
|
c4iw_put_ep(&ep->com);
|
|
return 0;
|
|
}
|
|
|
|
static int terminate(struct c4iw_dev *dev, struct sk_buff *skb)
|
|
{
|
|
struct cpl_rdma_terminate *rpl = cplhdr(skb);
|
|
unsigned int tid = GET_TID(rpl);
|
|
struct c4iw_ep *ep;
|
|
struct c4iw_qp_attributes attrs;
|
|
|
|
ep = get_ep_from_tid(dev, tid);
|
|
BUG_ON(!ep);
|
|
|
|
if (ep && ep->com.qp) {
|
|
printk(KERN_WARNING MOD "TERM received tid %u qpid %u\n", tid,
|
|
ep->com.qp->wq.sq.qid);
|
|
attrs.next_state = C4IW_QP_STATE_TERMINATE;
|
|
c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp,
|
|
C4IW_QP_ATTR_NEXT_STATE, &attrs, 1);
|
|
} else
|
|
printk(KERN_WARNING MOD "TERM received tid %u no ep/qp\n", tid);
|
|
c4iw_put_ep(&ep->com);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Upcall from the adapter indicating data has been transmitted.
|
|
* For us its just the single MPA request or reply. We can now free
|
|
* the skb holding the mpa message.
|
|
*/
|
|
static int fw4_ack(struct c4iw_dev *dev, struct sk_buff *skb)
|
|
{
|
|
struct c4iw_ep *ep;
|
|
struct cpl_fw4_ack *hdr = cplhdr(skb);
|
|
u8 credits = hdr->credits;
|
|
unsigned int tid = GET_TID(hdr);
|
|
|
|
|
|
ep = get_ep_from_tid(dev, tid);
|
|
if (!ep)
|
|
return 0;
|
|
PDBG("%s ep %p tid %u credits %u\n", __func__, ep, ep->hwtid, credits);
|
|
if (credits == 0) {
|
|
PDBG("%s 0 credit ack ep %p tid %u state %u\n",
|
|
__func__, ep, ep->hwtid, state_read(&ep->com));
|
|
goto out;
|
|
}
|
|
|
|
dst_confirm(ep->dst);
|
|
if (ep->mpa_skb) {
|
|
PDBG("%s last streaming msg ack ep %p tid %u state %u "
|
|
"initiator %u freeing skb\n", __func__, ep, ep->hwtid,
|
|
state_read(&ep->com), ep->mpa_attr.initiator ? 1 : 0);
|
|
mutex_lock(&ep->com.mutex);
|
|
kfree_skb(ep->mpa_skb);
|
|
ep->mpa_skb = NULL;
|
|
if (test_bit(STOP_MPA_TIMER, &ep->com.flags))
|
|
stop_ep_timer(ep);
|
|
mutex_unlock(&ep->com.mutex);
|
|
}
|
|
out:
|
|
c4iw_put_ep(&ep->com);
|
|
return 0;
|
|
}
|
|
|
|
int c4iw_reject_cr(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len)
|
|
{
|
|
int abort;
|
|
struct c4iw_ep *ep = to_ep(cm_id);
|
|
|
|
PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
|
|
|
|
mutex_lock(&ep->com.mutex);
|
|
if (ep->com.state != MPA_REQ_RCVD) {
|
|
mutex_unlock(&ep->com.mutex);
|
|
c4iw_put_ep(&ep->com);
|
|
return -ECONNRESET;
|
|
}
|
|
set_bit(ULP_REJECT, &ep->com.history);
|
|
if (mpa_rev == 0)
|
|
abort = 1;
|
|
else
|
|
abort = send_mpa_reject(ep, pdata, pdata_len);
|
|
mutex_unlock(&ep->com.mutex);
|
|
|
|
stop_ep_timer(ep);
|
|
c4iw_ep_disconnect(ep, abort != 0, GFP_KERNEL);
|
|
c4iw_put_ep(&ep->com);
|
|
return 0;
|
|
}
|
|
|
|
int c4iw_accept_cr(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
|
|
{
|
|
int err;
|
|
struct c4iw_qp_attributes attrs;
|
|
enum c4iw_qp_attr_mask mask;
|
|
struct c4iw_ep *ep = to_ep(cm_id);
|
|
struct c4iw_dev *h = to_c4iw_dev(cm_id->device);
|
|
struct c4iw_qp *qp = get_qhp(h, conn_param->qpn);
|
|
int abort = 0;
|
|
|
|
PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
|
|
|
|
mutex_lock(&ep->com.mutex);
|
|
if (ep->com.state != MPA_REQ_RCVD) {
|
|
err = -ECONNRESET;
|
|
goto err_out;
|
|
}
|
|
|
|
BUG_ON(!qp);
|
|
|
|
set_bit(ULP_ACCEPT, &ep->com.history);
|
|
if ((conn_param->ord > cur_max_read_depth(ep->com.dev)) ||
|
|
(conn_param->ird > cur_max_read_depth(ep->com.dev))) {
|
|
err = -EINVAL;
|
|
goto err_abort;
|
|
}
|
|
|
|
if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) {
|
|
if (conn_param->ord > ep->ird) {
|
|
if (RELAXED_IRD_NEGOTIATION) {
|
|
conn_param->ord = ep->ird;
|
|
} else {
|
|
ep->ird = conn_param->ird;
|
|
ep->ord = conn_param->ord;
|
|
send_mpa_reject(ep, conn_param->private_data,
|
|
conn_param->private_data_len);
|
|
err = -ENOMEM;
|
|
goto err_abort;
|
|
}
|
|
}
|
|
if (conn_param->ird < ep->ord) {
|
|
if (RELAXED_IRD_NEGOTIATION &&
|
|
ep->ord <= h->rdev.lldi.max_ordird_qp) {
|
|
conn_param->ird = ep->ord;
|
|
} else {
|
|
err = -ENOMEM;
|
|
goto err_abort;
|
|
}
|
|
}
|
|
}
|
|
ep->ird = conn_param->ird;
|
|
ep->ord = conn_param->ord;
|
|
|
|
if (ep->mpa_attr.version == 1) {
|
|
if (peer2peer && ep->ird == 0)
|
|
ep->ird = 1;
|
|
} else {
|
|
if (peer2peer &&
|
|
(ep->mpa_attr.p2p_type != FW_RI_INIT_P2PTYPE_DISABLED) &&
|
|
(p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ) && ep->ird == 0)
|
|
ep->ird = 1;
|
|
}
|
|
|
|
PDBG("%s %d ird %d ord %d\n", __func__, __LINE__, ep->ird, ep->ord);
|
|
|
|
ep->com.cm_id = cm_id;
|
|
ref_cm_id(&ep->com);
|
|
ep->com.qp = qp;
|
|
ref_qp(ep);
|
|
|
|
/* bind QP to EP and move to RTS */
|
|
attrs.mpa_attr = ep->mpa_attr;
|
|
attrs.max_ird = ep->ird;
|
|
attrs.max_ord = ep->ord;
|
|
attrs.llp_stream_handle = ep;
|
|
attrs.next_state = C4IW_QP_STATE_RTS;
|
|
|
|
/* bind QP and TID with INIT_WR */
|
|
mask = C4IW_QP_ATTR_NEXT_STATE |
|
|
C4IW_QP_ATTR_LLP_STREAM_HANDLE |
|
|
C4IW_QP_ATTR_MPA_ATTR |
|
|
C4IW_QP_ATTR_MAX_IRD |
|
|
C4IW_QP_ATTR_MAX_ORD;
|
|
|
|
err = c4iw_modify_qp(ep->com.qp->rhp,
|
|
ep->com.qp, mask, &attrs, 1);
|
|
if (err)
|
|
goto err_deref_cm_id;
|
|
|
|
set_bit(STOP_MPA_TIMER, &ep->com.flags);
|
|
err = send_mpa_reply(ep, conn_param->private_data,
|
|
conn_param->private_data_len);
|
|
if (err)
|
|
goto err_deref_cm_id;
|
|
|
|
__state_set(&ep->com, FPDU_MODE);
|
|
established_upcall(ep);
|
|
mutex_unlock(&ep->com.mutex);
|
|
c4iw_put_ep(&ep->com);
|
|
return 0;
|
|
err_deref_cm_id:
|
|
deref_cm_id(&ep->com);
|
|
err_abort:
|
|
abort = 1;
|
|
err_out:
|
|
mutex_unlock(&ep->com.mutex);
|
|
if (abort)
|
|
c4iw_ep_disconnect(ep, 1, GFP_KERNEL);
|
|
c4iw_put_ep(&ep->com);
|
|
return err;
|
|
}
|
|
|
|
static int pick_local_ipaddrs(struct c4iw_dev *dev, struct iw_cm_id *cm_id)
|
|
{
|
|
struct in_device *ind;
|
|
int found = 0;
|
|
struct sockaddr_in *laddr = (struct sockaddr_in *)&cm_id->m_local_addr;
|
|
struct sockaddr_in *raddr = (struct sockaddr_in *)&cm_id->m_remote_addr;
|
|
|
|
ind = in_dev_get(dev->rdev.lldi.ports[0]);
|
|
if (!ind)
|
|
return -EADDRNOTAVAIL;
|
|
for_primary_ifa(ind) {
|
|
laddr->sin_addr.s_addr = ifa->ifa_address;
|
|
raddr->sin_addr.s_addr = ifa->ifa_address;
|
|
found = 1;
|
|
break;
|
|
}
|
|
endfor_ifa(ind);
|
|
in_dev_put(ind);
|
|
return found ? 0 : -EADDRNOTAVAIL;
|
|
}
|
|
|
|
static int get_lladdr(struct net_device *dev, struct in6_addr *addr,
|
|
unsigned char banned_flags)
|
|
{
|
|
struct inet6_dev *idev;
|
|
int err = -EADDRNOTAVAIL;
|
|
|
|
rcu_read_lock();
|
|
idev = __in6_dev_get(dev);
|
|
if (idev != NULL) {
|
|
struct inet6_ifaddr *ifp;
|
|
|
|
read_lock_bh(&idev->lock);
|
|
list_for_each_entry(ifp, &idev->addr_list, if_list) {
|
|
if (ifp->scope == IFA_LINK &&
|
|
!(ifp->flags & banned_flags)) {
|
|
memcpy(addr, &ifp->addr, 16);
|
|
err = 0;
|
|
break;
|
|
}
|
|
}
|
|
read_unlock_bh(&idev->lock);
|
|
}
|
|
rcu_read_unlock();
|
|
return err;
|
|
}
|
|
|
|
static int pick_local_ip6addrs(struct c4iw_dev *dev, struct iw_cm_id *cm_id)
|
|
{
|
|
struct in6_addr uninitialized_var(addr);
|
|
struct sockaddr_in6 *la6 = (struct sockaddr_in6 *)&cm_id->m_local_addr;
|
|
struct sockaddr_in6 *ra6 = (struct sockaddr_in6 *)&cm_id->m_remote_addr;
|
|
|
|
if (!get_lladdr(dev->rdev.lldi.ports[0], &addr, IFA_F_TENTATIVE)) {
|
|
memcpy(la6->sin6_addr.s6_addr, &addr, 16);
|
|
memcpy(ra6->sin6_addr.s6_addr, &addr, 16);
|
|
return 0;
|
|
}
|
|
return -EADDRNOTAVAIL;
|
|
}
|
|
|
|
int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
|
|
{
|
|
struct c4iw_dev *dev = to_c4iw_dev(cm_id->device);
|
|
struct c4iw_ep *ep;
|
|
int err = 0;
|
|
struct sockaddr_in *laddr;
|
|
struct sockaddr_in *raddr;
|
|
struct sockaddr_in6 *laddr6;
|
|
struct sockaddr_in6 *raddr6;
|
|
__u8 *ra;
|
|
int iptype;
|
|
|
|
if ((conn_param->ord > cur_max_read_depth(dev)) ||
|
|
(conn_param->ird > cur_max_read_depth(dev))) {
|
|
err = -EINVAL;
|
|
goto out;
|
|
}
|
|
ep = alloc_ep(sizeof(*ep), GFP_KERNEL);
|
|
if (!ep) {
|
|
printk(KERN_ERR MOD "%s - cannot alloc ep.\n", __func__);
|
|
err = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
skb_queue_head_init(&ep->com.ep_skb_list);
|
|
if (alloc_ep_skb_list(&ep->com.ep_skb_list, CN_MAX_CON_BUF)) {
|
|
err = -ENOMEM;
|
|
goto fail1;
|
|
}
|
|
|
|
init_timer(&ep->timer);
|
|
ep->plen = conn_param->private_data_len;
|
|
if (ep->plen)
|
|
memcpy(ep->mpa_pkt + sizeof(struct mpa_message),
|
|
conn_param->private_data, ep->plen);
|
|
ep->ird = conn_param->ird;
|
|
ep->ord = conn_param->ord;
|
|
|
|
if (peer2peer && ep->ord == 0)
|
|
ep->ord = 1;
|
|
|
|
ep->com.cm_id = cm_id;
|
|
ref_cm_id(&ep->com);
|
|
ep->com.dev = dev;
|
|
ep->com.qp = get_qhp(dev, conn_param->qpn);
|
|
if (!ep->com.qp) {
|
|
PDBG("%s qpn 0x%x not found!\n", __func__, conn_param->qpn);
|
|
err = -EINVAL;
|
|
goto fail2;
|
|
}
|
|
ref_qp(ep);
|
|
PDBG("%s qpn 0x%x qp %p cm_id %p\n", __func__, conn_param->qpn,
|
|
ep->com.qp, cm_id);
|
|
|
|
/*
|
|
* Allocate an active TID to initiate a TCP connection.
|
|
*/
|
|
ep->atid = cxgb4_alloc_atid(dev->rdev.lldi.tids, ep);
|
|
if (ep->atid == -1) {
|
|
printk(KERN_ERR MOD "%s - cannot alloc atid.\n", __func__);
|
|
err = -ENOMEM;
|
|
goto fail2;
|
|
}
|
|
insert_handle(dev, &dev->atid_idr, ep, ep->atid);
|
|
|
|
memcpy(&ep->com.local_addr, &cm_id->m_local_addr,
|
|
sizeof(ep->com.local_addr));
|
|
memcpy(&ep->com.remote_addr, &cm_id->m_remote_addr,
|
|
sizeof(ep->com.remote_addr));
|
|
|
|
laddr = (struct sockaddr_in *)&ep->com.local_addr;
|
|
raddr = (struct sockaddr_in *)&ep->com.remote_addr;
|
|
laddr6 = (struct sockaddr_in6 *)&ep->com.local_addr;
|
|
raddr6 = (struct sockaddr_in6 *) &ep->com.remote_addr;
|
|
|
|
if (cm_id->m_remote_addr.ss_family == AF_INET) {
|
|
iptype = 4;
|
|
ra = (__u8 *)&raddr->sin_addr;
|
|
|
|
/*
|
|
* Handle loopback requests to INADDR_ANY.
|
|
*/
|
|
if (raddr->sin_addr.s_addr == htonl(INADDR_ANY)) {
|
|
err = pick_local_ipaddrs(dev, cm_id);
|
|
if (err)
|
|
goto fail2;
|
|
}
|
|
|
|
/* find a route */
|
|
PDBG("%s saddr %pI4 sport 0x%x raddr %pI4 rport 0x%x\n",
|
|
__func__, &laddr->sin_addr, ntohs(laddr->sin_port),
|
|
ra, ntohs(raddr->sin_port));
|
|
ep->dst = cxgb_find_route(&dev->rdev.lldi, get_real_dev,
|
|
laddr->sin_addr.s_addr,
|
|
raddr->sin_addr.s_addr,
|
|
laddr->sin_port,
|
|
raddr->sin_port, cm_id->tos);
|
|
} else {
|
|
iptype = 6;
|
|
ra = (__u8 *)&raddr6->sin6_addr;
|
|
|
|
/*
|
|
* Handle loopback requests to INADDR_ANY.
|
|
*/
|
|
if (ipv6_addr_type(&raddr6->sin6_addr) == IPV6_ADDR_ANY) {
|
|
err = pick_local_ip6addrs(dev, cm_id);
|
|
if (err)
|
|
goto fail2;
|
|
}
|
|
|
|
/* find a route */
|
|
PDBG("%s saddr %pI6 sport 0x%x raddr %pI6 rport 0x%x\n",
|
|
__func__, laddr6->sin6_addr.s6_addr,
|
|
ntohs(laddr6->sin6_port),
|
|
raddr6->sin6_addr.s6_addr, ntohs(raddr6->sin6_port));
|
|
ep->dst = cxgb_find_route6(&dev->rdev.lldi, get_real_dev,
|
|
laddr6->sin6_addr.s6_addr,
|
|
raddr6->sin6_addr.s6_addr,
|
|
laddr6->sin6_port,
|
|
raddr6->sin6_port, 0,
|
|
raddr6->sin6_scope_id);
|
|
}
|
|
if (!ep->dst) {
|
|
printk(KERN_ERR MOD "%s - cannot find route.\n", __func__);
|
|
err = -EHOSTUNREACH;
|
|
goto fail3;
|
|
}
|
|
|
|
err = import_ep(ep, iptype, ra, ep->dst, ep->com.dev, true,
|
|
ep->com.dev->rdev.lldi.adapter_type, cm_id->tos);
|
|
if (err) {
|
|
printk(KERN_ERR MOD "%s - cannot alloc l2e.\n", __func__);
|
|
goto fail4;
|
|
}
|
|
|
|
PDBG("%s txq_idx %u tx_chan %u smac_idx %u rss_qid %u l2t_idx %u\n",
|
|
__func__, ep->txq_idx, ep->tx_chan, ep->smac_idx, ep->rss_qid,
|
|
ep->l2t->idx);
|
|
|
|
state_set(&ep->com, CONNECTING);
|
|
ep->tos = cm_id->tos;
|
|
|
|
/* send connect request to rnic */
|
|
err = send_connect(ep);
|
|
if (!err)
|
|
goto out;
|
|
|
|
cxgb4_l2t_release(ep->l2t);
|
|
fail4:
|
|
dst_release(ep->dst);
|
|
fail3:
|
|
remove_handle(ep->com.dev, &ep->com.dev->atid_idr, ep->atid);
|
|
cxgb4_free_atid(ep->com.dev->rdev.lldi.tids, ep->atid);
|
|
fail2:
|
|
skb_queue_purge(&ep->com.ep_skb_list);
|
|
deref_cm_id(&ep->com);
|
|
fail1:
|
|
c4iw_put_ep(&ep->com);
|
|
out:
|
|
return err;
|
|
}
|
|
|
|
static int create_server6(struct c4iw_dev *dev, struct c4iw_listen_ep *ep)
|
|
{
|
|
int err;
|
|
struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)
|
|
&ep->com.local_addr;
|
|
|
|
if (ipv6_addr_type(&sin6->sin6_addr) != IPV6_ADDR_ANY) {
|
|
err = cxgb4_clip_get(ep->com.dev->rdev.lldi.ports[0],
|
|
(const u32 *)&sin6->sin6_addr.s6_addr, 1);
|
|
if (err)
|
|
return err;
|
|
}
|
|
c4iw_init_wr_wait(&ep->com.wr_wait);
|
|
err = cxgb4_create_server6(ep->com.dev->rdev.lldi.ports[0],
|
|
ep->stid, &sin6->sin6_addr,
|
|
sin6->sin6_port,
|
|
ep->com.dev->rdev.lldi.rxq_ids[0]);
|
|
if (!err)
|
|
err = c4iw_wait_for_reply(&ep->com.dev->rdev,
|
|
&ep->com.wr_wait,
|
|
0, 0, __func__);
|
|
else if (err > 0)
|
|
err = net_xmit_errno(err);
|
|
if (err) {
|
|
cxgb4_clip_release(ep->com.dev->rdev.lldi.ports[0],
|
|
(const u32 *)&sin6->sin6_addr.s6_addr, 1);
|
|
pr_err("cxgb4_create_server6/filter failed err %d stid %d laddr %pI6 lport %d\n",
|
|
err, ep->stid,
|
|
sin6->sin6_addr.s6_addr, ntohs(sin6->sin6_port));
|
|
}
|
|
return err;
|
|
}
|
|
|
|
static int create_server4(struct c4iw_dev *dev, struct c4iw_listen_ep *ep)
|
|
{
|
|
int err;
|
|
struct sockaddr_in *sin = (struct sockaddr_in *)
|
|
&ep->com.local_addr;
|
|
|
|
if (dev->rdev.lldi.enable_fw_ofld_conn) {
|
|
do {
|
|
err = cxgb4_create_server_filter(
|
|
ep->com.dev->rdev.lldi.ports[0], ep->stid,
|
|
sin->sin_addr.s_addr, sin->sin_port, 0,
|
|
ep->com.dev->rdev.lldi.rxq_ids[0], 0, 0);
|
|
if (err == -EBUSY) {
|
|
if (c4iw_fatal_error(&ep->com.dev->rdev)) {
|
|
err = -EIO;
|
|
break;
|
|
}
|
|
set_current_state(TASK_UNINTERRUPTIBLE);
|
|
schedule_timeout(usecs_to_jiffies(100));
|
|
}
|
|
} while (err == -EBUSY);
|
|
} else {
|
|
c4iw_init_wr_wait(&ep->com.wr_wait);
|
|
err = cxgb4_create_server(ep->com.dev->rdev.lldi.ports[0],
|
|
ep->stid, sin->sin_addr.s_addr, sin->sin_port,
|
|
0, ep->com.dev->rdev.lldi.rxq_ids[0]);
|
|
if (!err)
|
|
err = c4iw_wait_for_reply(&ep->com.dev->rdev,
|
|
&ep->com.wr_wait,
|
|
0, 0, __func__);
|
|
else if (err > 0)
|
|
err = net_xmit_errno(err);
|
|
}
|
|
if (err)
|
|
pr_err("cxgb4_create_server/filter failed err %d stid %d laddr %pI4 lport %d\n"
|
|
, err, ep->stid,
|
|
&sin->sin_addr, ntohs(sin->sin_port));
|
|
return err;
|
|
}
|
|
|
|
int c4iw_create_listen(struct iw_cm_id *cm_id, int backlog)
|
|
{
|
|
int err = 0;
|
|
struct c4iw_dev *dev = to_c4iw_dev(cm_id->device);
|
|
struct c4iw_listen_ep *ep;
|
|
|
|
might_sleep();
|
|
|
|
ep = alloc_ep(sizeof(*ep), GFP_KERNEL);
|
|
if (!ep) {
|
|
printk(KERN_ERR MOD "%s - cannot alloc ep.\n", __func__);
|
|
err = -ENOMEM;
|
|
goto fail1;
|
|
}
|
|
skb_queue_head_init(&ep->com.ep_skb_list);
|
|
PDBG("%s ep %p\n", __func__, ep);
|
|
ep->com.cm_id = cm_id;
|
|
ref_cm_id(&ep->com);
|
|
ep->com.dev = dev;
|
|
ep->backlog = backlog;
|
|
memcpy(&ep->com.local_addr, &cm_id->m_local_addr,
|
|
sizeof(ep->com.local_addr));
|
|
|
|
/*
|
|
* Allocate a server TID.
|
|
*/
|
|
if (dev->rdev.lldi.enable_fw_ofld_conn &&
|
|
ep->com.local_addr.ss_family == AF_INET)
|
|
ep->stid = cxgb4_alloc_sftid(dev->rdev.lldi.tids,
|
|
cm_id->m_local_addr.ss_family, ep);
|
|
else
|
|
ep->stid = cxgb4_alloc_stid(dev->rdev.lldi.tids,
|
|
cm_id->m_local_addr.ss_family, ep);
|
|
|
|
if (ep->stid == -1) {
|
|
printk(KERN_ERR MOD "%s - cannot alloc stid.\n", __func__);
|
|
err = -ENOMEM;
|
|
goto fail2;
|
|
}
|
|
insert_handle(dev, &dev->stid_idr, ep, ep->stid);
|
|
|
|
memcpy(&ep->com.local_addr, &cm_id->m_local_addr,
|
|
sizeof(ep->com.local_addr));
|
|
|
|
state_set(&ep->com, LISTEN);
|
|
if (ep->com.local_addr.ss_family == AF_INET)
|
|
err = create_server4(dev, ep);
|
|
else
|
|
err = create_server6(dev, ep);
|
|
if (!err) {
|
|
cm_id->provider_data = ep;
|
|
goto out;
|
|
}
|
|
|
|
cxgb4_free_stid(ep->com.dev->rdev.lldi.tids, ep->stid,
|
|
ep->com.local_addr.ss_family);
|
|
fail2:
|
|
deref_cm_id(&ep->com);
|
|
c4iw_put_ep(&ep->com);
|
|
fail1:
|
|
out:
|
|
return err;
|
|
}
|
|
|
|
int c4iw_destroy_listen(struct iw_cm_id *cm_id)
|
|
{
|
|
int err;
|
|
struct c4iw_listen_ep *ep = to_listen_ep(cm_id);
|
|
|
|
PDBG("%s ep %p\n", __func__, ep);
|
|
|
|
might_sleep();
|
|
state_set(&ep->com, DEAD);
|
|
if (ep->com.dev->rdev.lldi.enable_fw_ofld_conn &&
|
|
ep->com.local_addr.ss_family == AF_INET) {
|
|
err = cxgb4_remove_server_filter(
|
|
ep->com.dev->rdev.lldi.ports[0], ep->stid,
|
|
ep->com.dev->rdev.lldi.rxq_ids[0], 0);
|
|
} else {
|
|
struct sockaddr_in6 *sin6;
|
|
c4iw_init_wr_wait(&ep->com.wr_wait);
|
|
err = cxgb4_remove_server(
|
|
ep->com.dev->rdev.lldi.ports[0], ep->stid,
|
|
ep->com.dev->rdev.lldi.rxq_ids[0], 0);
|
|
if (err)
|
|
goto done;
|
|
err = c4iw_wait_for_reply(&ep->com.dev->rdev, &ep->com.wr_wait,
|
|
0, 0, __func__);
|
|
sin6 = (struct sockaddr_in6 *)&ep->com.local_addr;
|
|
cxgb4_clip_release(ep->com.dev->rdev.lldi.ports[0],
|
|
(const u32 *)&sin6->sin6_addr.s6_addr, 1);
|
|
}
|
|
remove_handle(ep->com.dev, &ep->com.dev->stid_idr, ep->stid);
|
|
cxgb4_free_stid(ep->com.dev->rdev.lldi.tids, ep->stid,
|
|
ep->com.local_addr.ss_family);
|
|
done:
|
|
deref_cm_id(&ep->com);
|
|
c4iw_put_ep(&ep->com);
|
|
return err;
|
|
}
|
|
|
|
int c4iw_ep_disconnect(struct c4iw_ep *ep, int abrupt, gfp_t gfp)
|
|
{
|
|
int ret = 0;
|
|
int close = 0;
|
|
int fatal = 0;
|
|
struct c4iw_rdev *rdev;
|
|
|
|
mutex_lock(&ep->com.mutex);
|
|
|
|
PDBG("%s ep %p state %s, abrupt %d\n", __func__, ep,
|
|
states[ep->com.state], abrupt);
|
|
|
|
/*
|
|
* Ref the ep here in case we have fatal errors causing the
|
|
* ep to be released and freed.
|
|
*/
|
|
c4iw_get_ep(&ep->com);
|
|
|
|
rdev = &ep->com.dev->rdev;
|
|
if (c4iw_fatal_error(rdev)) {
|
|
fatal = 1;
|
|
close_complete_upcall(ep, -EIO);
|
|
ep->com.state = DEAD;
|
|
}
|
|
switch (ep->com.state) {
|
|
case MPA_REQ_WAIT:
|
|
case MPA_REQ_SENT:
|
|
case MPA_REQ_RCVD:
|
|
case MPA_REP_SENT:
|
|
case FPDU_MODE:
|
|
case CONNECTING:
|
|
close = 1;
|
|
if (abrupt)
|
|
ep->com.state = ABORTING;
|
|
else {
|
|
ep->com.state = CLOSING;
|
|
|
|
/*
|
|
* if we close before we see the fw4_ack() then we fix
|
|
* up the timer state since we're reusing it.
|
|
*/
|
|
if (ep->mpa_skb &&
|
|
test_bit(STOP_MPA_TIMER, &ep->com.flags)) {
|
|
clear_bit(STOP_MPA_TIMER, &ep->com.flags);
|
|
stop_ep_timer(ep);
|
|
}
|
|
start_ep_timer(ep);
|
|
}
|
|
set_bit(CLOSE_SENT, &ep->com.flags);
|
|
break;
|
|
case CLOSING:
|
|
if (!test_and_set_bit(CLOSE_SENT, &ep->com.flags)) {
|
|
close = 1;
|
|
if (abrupt) {
|
|
(void)stop_ep_timer(ep);
|
|
ep->com.state = ABORTING;
|
|
} else
|
|
ep->com.state = MORIBUND;
|
|
}
|
|
break;
|
|
case MORIBUND:
|
|
case ABORTING:
|
|
case DEAD:
|
|
PDBG("%s ignoring disconnect ep %p state %u\n",
|
|
__func__, ep, ep->com.state);
|
|
break;
|
|
default:
|
|
BUG();
|
|
break;
|
|
}
|
|
|
|
if (close) {
|
|
if (abrupt) {
|
|
set_bit(EP_DISC_ABORT, &ep->com.history);
|
|
close_complete_upcall(ep, -ECONNRESET);
|
|
ret = send_abort(ep);
|
|
} else {
|
|
set_bit(EP_DISC_CLOSE, &ep->com.history);
|
|
ret = send_halfclose(ep);
|
|
}
|
|
if (ret) {
|
|
set_bit(EP_DISC_FAIL, &ep->com.history);
|
|
if (!abrupt) {
|
|
stop_ep_timer(ep);
|
|
close_complete_upcall(ep, -EIO);
|
|
}
|
|
if (ep->com.qp) {
|
|
struct c4iw_qp_attributes attrs;
|
|
|
|
attrs.next_state = C4IW_QP_STATE_ERROR;
|
|
ret = c4iw_modify_qp(ep->com.qp->rhp,
|
|
ep->com.qp,
|
|
C4IW_QP_ATTR_NEXT_STATE,
|
|
&attrs, 1);
|
|
if (ret)
|
|
pr_err(MOD
|
|
"%s - qp <- error failed!\n",
|
|
__func__);
|
|
}
|
|
fatal = 1;
|
|
}
|
|
}
|
|
mutex_unlock(&ep->com.mutex);
|
|
c4iw_put_ep(&ep->com);
|
|
if (fatal)
|
|
release_ep_resources(ep);
|
|
return ret;
|
|
}
|
|
|
|
static void active_ofld_conn_reply(struct c4iw_dev *dev, struct sk_buff *skb,
|
|
struct cpl_fw6_msg_ofld_connection_wr_rpl *req)
|
|
{
|
|
struct c4iw_ep *ep;
|
|
int atid = be32_to_cpu(req->tid);
|
|
|
|
ep = (struct c4iw_ep *)lookup_atid(dev->rdev.lldi.tids,
|
|
(__force u32) req->tid);
|
|
if (!ep)
|
|
return;
|
|
|
|
switch (req->retval) {
|
|
case FW_ENOMEM:
|
|
set_bit(ACT_RETRY_NOMEM, &ep->com.history);
|
|
if (ep->retry_count++ < ACT_OPEN_RETRY_COUNT) {
|
|
send_fw_act_open_req(ep, atid);
|
|
return;
|
|
}
|
|
case FW_EADDRINUSE:
|
|
set_bit(ACT_RETRY_INUSE, &ep->com.history);
|
|
if (ep->retry_count++ < ACT_OPEN_RETRY_COUNT) {
|
|
send_fw_act_open_req(ep, atid);
|
|
return;
|
|
}
|
|
break;
|
|
default:
|
|
pr_info("%s unexpected ofld conn wr retval %d\n",
|
|
__func__, req->retval);
|
|
break;
|
|
}
|
|
pr_err("active ofld_connect_wr failure %d atid %d\n",
|
|
req->retval, atid);
|
|
mutex_lock(&dev->rdev.stats.lock);
|
|
dev->rdev.stats.act_ofld_conn_fails++;
|
|
mutex_unlock(&dev->rdev.stats.lock);
|
|
connect_reply_upcall(ep, status2errno(req->retval));
|
|
state_set(&ep->com, DEAD);
|
|
if (ep->com.remote_addr.ss_family == AF_INET6) {
|
|
struct sockaddr_in6 *sin6 =
|
|
(struct sockaddr_in6 *)&ep->com.local_addr;
|
|
cxgb4_clip_release(ep->com.dev->rdev.lldi.ports[0],
|
|
(const u32 *)&sin6->sin6_addr.s6_addr, 1);
|
|
}
|
|
remove_handle(dev, &dev->atid_idr, atid);
|
|
cxgb4_free_atid(dev->rdev.lldi.tids, atid);
|
|
dst_release(ep->dst);
|
|
cxgb4_l2t_release(ep->l2t);
|
|
c4iw_put_ep(&ep->com);
|
|
}
|
|
|
|
static void passive_ofld_conn_reply(struct c4iw_dev *dev, struct sk_buff *skb,
|
|
struct cpl_fw6_msg_ofld_connection_wr_rpl *req)
|
|
{
|
|
struct sk_buff *rpl_skb;
|
|
struct cpl_pass_accept_req *cpl;
|
|
int ret;
|
|
|
|
rpl_skb = (struct sk_buff *)(unsigned long)req->cookie;
|
|
BUG_ON(!rpl_skb);
|
|
if (req->retval) {
|
|
PDBG("%s passive open failure %d\n", __func__, req->retval);
|
|
mutex_lock(&dev->rdev.stats.lock);
|
|
dev->rdev.stats.pas_ofld_conn_fails++;
|
|
mutex_unlock(&dev->rdev.stats.lock);
|
|
kfree_skb(rpl_skb);
|
|
} else {
|
|
cpl = (struct cpl_pass_accept_req *)cplhdr(rpl_skb);
|
|
OPCODE_TID(cpl) = htonl(MK_OPCODE_TID(CPL_PASS_ACCEPT_REQ,
|
|
(__force u32) htonl(
|
|
(__force u32) req->tid)));
|
|
ret = pass_accept_req(dev, rpl_skb);
|
|
if (!ret)
|
|
kfree_skb(rpl_skb);
|
|
}
|
|
return;
|
|
}
|
|
|
|
static int deferred_fw6_msg(struct c4iw_dev *dev, struct sk_buff *skb)
|
|
{
|
|
struct cpl_fw6_msg *rpl = cplhdr(skb);
|
|
struct cpl_fw6_msg_ofld_connection_wr_rpl *req;
|
|
|
|
switch (rpl->type) {
|
|
case FW6_TYPE_CQE:
|
|
c4iw_ev_dispatch(dev, (struct t4_cqe *)&rpl->data[0]);
|
|
break;
|
|
case FW6_TYPE_OFLD_CONNECTION_WR_RPL:
|
|
req = (struct cpl_fw6_msg_ofld_connection_wr_rpl *)rpl->data;
|
|
switch (req->t_state) {
|
|
case TCP_SYN_SENT:
|
|
active_ofld_conn_reply(dev, skb, req);
|
|
break;
|
|
case TCP_SYN_RECV:
|
|
passive_ofld_conn_reply(dev, skb, req);
|
|
break;
|
|
default:
|
|
pr_err("%s unexpected ofld conn wr state %d\n",
|
|
__func__, req->t_state);
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void build_cpl_pass_accept_req(struct sk_buff *skb, int stid , u8 tos)
|
|
{
|
|
__be32 l2info;
|
|
__be16 hdr_len, vlantag, len;
|
|
u16 eth_hdr_len;
|
|
int tcp_hdr_len, ip_hdr_len;
|
|
u8 intf;
|
|
struct cpl_rx_pkt *cpl = cplhdr(skb);
|
|
struct cpl_pass_accept_req *req;
|
|
struct tcp_options_received tmp_opt;
|
|
struct c4iw_dev *dev;
|
|
enum chip_type type;
|
|
|
|
dev = *((struct c4iw_dev **) (skb->cb + sizeof(void *)));
|
|
/* Store values from cpl_rx_pkt in temporary location. */
|
|
vlantag = cpl->vlan;
|
|
len = cpl->len;
|
|
l2info = cpl->l2info;
|
|
hdr_len = cpl->hdr_len;
|
|
intf = cpl->iff;
|
|
|
|
__skb_pull(skb, sizeof(*req) + sizeof(struct rss_header));
|
|
|
|
/*
|
|
* We need to parse the TCP options from SYN packet.
|
|
* to generate cpl_pass_accept_req.
|
|
*/
|
|
memset(&tmp_opt, 0, sizeof(tmp_opt));
|
|
tcp_clear_options(&tmp_opt);
|
|
tcp_parse_options(skb, &tmp_opt, 0, NULL);
|
|
|
|
req = (struct cpl_pass_accept_req *)__skb_push(skb, sizeof(*req));
|
|
memset(req, 0, sizeof(*req));
|
|
req->l2info = cpu_to_be16(SYN_INTF_V(intf) |
|
|
SYN_MAC_IDX_V(RX_MACIDX_G(
|
|
be32_to_cpu(l2info))) |
|
|
SYN_XACT_MATCH_F);
|
|
type = dev->rdev.lldi.adapter_type;
|
|
tcp_hdr_len = RX_TCPHDR_LEN_G(be16_to_cpu(hdr_len));
|
|
ip_hdr_len = RX_IPHDR_LEN_G(be16_to_cpu(hdr_len));
|
|
req->hdr_len =
|
|
cpu_to_be32(SYN_RX_CHAN_V(RX_CHAN_G(be32_to_cpu(l2info))));
|
|
if (CHELSIO_CHIP_VERSION(type) <= CHELSIO_T5) {
|
|
eth_hdr_len = is_t4(type) ?
|
|
RX_ETHHDR_LEN_G(be32_to_cpu(l2info)) :
|
|
RX_T5_ETHHDR_LEN_G(be32_to_cpu(l2info));
|
|
req->hdr_len |= cpu_to_be32(TCP_HDR_LEN_V(tcp_hdr_len) |
|
|
IP_HDR_LEN_V(ip_hdr_len) |
|
|
ETH_HDR_LEN_V(eth_hdr_len));
|
|
} else { /* T6 and later */
|
|
eth_hdr_len = RX_T6_ETHHDR_LEN_G(be32_to_cpu(l2info));
|
|
req->hdr_len |= cpu_to_be32(T6_TCP_HDR_LEN_V(tcp_hdr_len) |
|
|
T6_IP_HDR_LEN_V(ip_hdr_len) |
|
|
T6_ETH_HDR_LEN_V(eth_hdr_len));
|
|
}
|
|
req->vlan = vlantag;
|
|
req->len = len;
|
|
req->tos_stid = cpu_to_be32(PASS_OPEN_TID_V(stid) |
|
|
PASS_OPEN_TOS_V(tos));
|
|
req->tcpopt.mss = htons(tmp_opt.mss_clamp);
|
|
if (tmp_opt.wscale_ok)
|
|
req->tcpopt.wsf = tmp_opt.snd_wscale;
|
|
req->tcpopt.tstamp = tmp_opt.saw_tstamp;
|
|
if (tmp_opt.sack_ok)
|
|
req->tcpopt.sack = 1;
|
|
OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_PASS_ACCEPT_REQ, 0));
|
|
return;
|
|
}
|
|
|
|
static void send_fw_pass_open_req(struct c4iw_dev *dev, struct sk_buff *skb,
|
|
__be32 laddr, __be16 lport,
|
|
__be32 raddr, __be16 rport,
|
|
u32 rcv_isn, u32 filter, u16 window,
|
|
u32 rss_qid, u8 port_id)
|
|
{
|
|
struct sk_buff *req_skb;
|
|
struct fw_ofld_connection_wr *req;
|
|
struct cpl_pass_accept_req *cpl = cplhdr(skb);
|
|
int ret;
|
|
|
|
req_skb = alloc_skb(sizeof(struct fw_ofld_connection_wr), GFP_KERNEL);
|
|
req = (struct fw_ofld_connection_wr *)__skb_put(req_skb, sizeof(*req));
|
|
memset(req, 0, sizeof(*req));
|
|
req->op_compl = htonl(WR_OP_V(FW_OFLD_CONNECTION_WR) | FW_WR_COMPL_F);
|
|
req->len16_pkd = htonl(FW_WR_LEN16_V(DIV_ROUND_UP(sizeof(*req), 16)));
|
|
req->le.version_cpl = htonl(FW_OFLD_CONNECTION_WR_CPL_F);
|
|
req->le.filter = (__force __be32) filter;
|
|
req->le.lport = lport;
|
|
req->le.pport = rport;
|
|
req->le.u.ipv4.lip = laddr;
|
|
req->le.u.ipv4.pip = raddr;
|
|
req->tcb.rcv_nxt = htonl(rcv_isn + 1);
|
|
req->tcb.rcv_adv = htons(window);
|
|
req->tcb.t_state_to_astid =
|
|
htonl(FW_OFLD_CONNECTION_WR_T_STATE_V(TCP_SYN_RECV) |
|
|
FW_OFLD_CONNECTION_WR_RCV_SCALE_V(cpl->tcpopt.wsf) |
|
|
FW_OFLD_CONNECTION_WR_ASTID_V(
|
|
PASS_OPEN_TID_G(ntohl(cpl->tos_stid))));
|
|
|
|
/*
|
|
* We store the qid in opt2 which will be used by the firmware
|
|
* to send us the wr response.
|
|
*/
|
|
req->tcb.opt2 = htonl(RSS_QUEUE_V(rss_qid));
|
|
|
|
/*
|
|
* We initialize the MSS index in TCB to 0xF.
|
|
* So that when driver sends cpl_pass_accept_rpl
|
|
* TCB picks up the correct value. If this was 0
|
|
* TP will ignore any value > 0 for MSS index.
|
|
*/
|
|
req->tcb.opt0 = cpu_to_be64(MSS_IDX_V(0xF));
|
|
req->cookie = (uintptr_t)skb;
|
|
|
|
set_wr_txq(req_skb, CPL_PRIORITY_CONTROL, port_id);
|
|
ret = cxgb4_ofld_send(dev->rdev.lldi.ports[0], req_skb);
|
|
if (ret < 0) {
|
|
pr_err("%s - cxgb4_ofld_send error %d - dropping\n", __func__,
|
|
ret);
|
|
kfree_skb(skb);
|
|
kfree_skb(req_skb);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Handler for CPL_RX_PKT message. Need to handle cpl_rx_pkt
|
|
* messages when a filter is being used instead of server to
|
|
* redirect a syn packet. When packets hit filter they are redirected
|
|
* to the offload queue and driver tries to establish the connection
|
|
* using firmware work request.
|
|
*/
|
|
static int rx_pkt(struct c4iw_dev *dev, struct sk_buff *skb)
|
|
{
|
|
int stid;
|
|
unsigned int filter;
|
|
struct ethhdr *eh = NULL;
|
|
struct vlan_ethhdr *vlan_eh = NULL;
|
|
struct iphdr *iph;
|
|
struct tcphdr *tcph;
|
|
struct rss_header *rss = (void *)skb->data;
|
|
struct cpl_rx_pkt *cpl = (void *)skb->data;
|
|
struct cpl_pass_accept_req *req = (void *)(rss + 1);
|
|
struct l2t_entry *e;
|
|
struct dst_entry *dst;
|
|
struct c4iw_ep *lep = NULL;
|
|
u16 window;
|
|
struct port_info *pi;
|
|
struct net_device *pdev;
|
|
u16 rss_qid, eth_hdr_len;
|
|
int step;
|
|
u32 tx_chan;
|
|
struct neighbour *neigh;
|
|
|
|
/* Drop all non-SYN packets */
|
|
if (!(cpl->l2info & cpu_to_be32(RXF_SYN_F)))
|
|
goto reject;
|
|
|
|
/*
|
|
* Drop all packets which did not hit the filter.
|
|
* Unlikely to happen.
|
|
*/
|
|
if (!(rss->filter_hit && rss->filter_tid))
|
|
goto reject;
|
|
|
|
/*
|
|
* Calculate the server tid from filter hit index from cpl_rx_pkt.
|
|
*/
|
|
stid = (__force int) cpu_to_be32((__force u32) rss->hash_val);
|
|
|
|
lep = (struct c4iw_ep *)get_ep_from_stid(dev, stid);
|
|
if (!lep) {
|
|
PDBG("%s connect request on invalid stid %d\n", __func__, stid);
|
|
goto reject;
|
|
}
|
|
|
|
switch (CHELSIO_CHIP_VERSION(dev->rdev.lldi.adapter_type)) {
|
|
case CHELSIO_T4:
|
|
eth_hdr_len = RX_ETHHDR_LEN_G(be32_to_cpu(cpl->l2info));
|
|
break;
|
|
case CHELSIO_T5:
|
|
eth_hdr_len = RX_T5_ETHHDR_LEN_G(be32_to_cpu(cpl->l2info));
|
|
break;
|
|
case CHELSIO_T6:
|
|
eth_hdr_len = RX_T6_ETHHDR_LEN_G(be32_to_cpu(cpl->l2info));
|
|
break;
|
|
default:
|
|
pr_err("T%d Chip is not supported\n",
|
|
CHELSIO_CHIP_VERSION(dev->rdev.lldi.adapter_type));
|
|
goto reject;
|
|
}
|
|
|
|
if (eth_hdr_len == ETH_HLEN) {
|
|
eh = (struct ethhdr *)(req + 1);
|
|
iph = (struct iphdr *)(eh + 1);
|
|
} else {
|
|
vlan_eh = (struct vlan_ethhdr *)(req + 1);
|
|
iph = (struct iphdr *)(vlan_eh + 1);
|
|
skb->vlan_tci = ntohs(cpl->vlan);
|
|
}
|
|
|
|
if (iph->version != 0x4)
|
|
goto reject;
|
|
|
|
tcph = (struct tcphdr *)(iph + 1);
|
|
skb_set_network_header(skb, (void *)iph - (void *)rss);
|
|
skb_set_transport_header(skb, (void *)tcph - (void *)rss);
|
|
skb_get(skb);
|
|
|
|
PDBG("%s lip 0x%x lport %u pip 0x%x pport %u tos %d\n", __func__,
|
|
ntohl(iph->daddr), ntohs(tcph->dest), ntohl(iph->saddr),
|
|
ntohs(tcph->source), iph->tos);
|
|
|
|
dst = cxgb_find_route(&dev->rdev.lldi, get_real_dev,
|
|
iph->daddr, iph->saddr, tcph->dest,
|
|
tcph->source, iph->tos);
|
|
if (!dst) {
|
|
pr_err("%s - failed to find dst entry!\n",
|
|
__func__);
|
|
goto reject;
|
|
}
|
|
neigh = dst_neigh_lookup_skb(dst, skb);
|
|
|
|
if (!neigh) {
|
|
pr_err("%s - failed to allocate neigh!\n",
|
|
__func__);
|
|
goto free_dst;
|
|
}
|
|
|
|
if (neigh->dev->flags & IFF_LOOPBACK) {
|
|
pdev = ip_dev_find(&init_net, iph->daddr);
|
|
e = cxgb4_l2t_get(dev->rdev.lldi.l2t, neigh,
|
|
pdev, 0);
|
|
pi = (struct port_info *)netdev_priv(pdev);
|
|
tx_chan = cxgb4_port_chan(pdev);
|
|
dev_put(pdev);
|
|
} else {
|
|
pdev = get_real_dev(neigh->dev);
|
|
e = cxgb4_l2t_get(dev->rdev.lldi.l2t, neigh,
|
|
pdev, 0);
|
|
pi = (struct port_info *)netdev_priv(pdev);
|
|
tx_chan = cxgb4_port_chan(pdev);
|
|
}
|
|
neigh_release(neigh);
|
|
if (!e) {
|
|
pr_err("%s - failed to allocate l2t entry!\n",
|
|
__func__);
|
|
goto free_dst;
|
|
}
|
|
|
|
step = dev->rdev.lldi.nrxq / dev->rdev.lldi.nchan;
|
|
rss_qid = dev->rdev.lldi.rxq_ids[pi->port_id * step];
|
|
window = (__force u16) htons((__force u16)tcph->window);
|
|
|
|
/* Calcuate filter portion for LE region. */
|
|
filter = (__force unsigned int) cpu_to_be32(cxgb4_select_ntuple(
|
|
dev->rdev.lldi.ports[0],
|
|
e));
|
|
|
|
/*
|
|
* Synthesize the cpl_pass_accept_req. We have everything except the
|
|
* TID. Once firmware sends a reply with TID we update the TID field
|
|
* in cpl and pass it through the regular cpl_pass_accept_req path.
|
|
*/
|
|
build_cpl_pass_accept_req(skb, stid, iph->tos);
|
|
send_fw_pass_open_req(dev, skb, iph->daddr, tcph->dest, iph->saddr,
|
|
tcph->source, ntohl(tcph->seq), filter, window,
|
|
rss_qid, pi->port_id);
|
|
cxgb4_l2t_release(e);
|
|
free_dst:
|
|
dst_release(dst);
|
|
reject:
|
|
if (lep)
|
|
c4iw_put_ep(&lep->com);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* These are the real handlers that are called from a
|
|
* work queue.
|
|
*/
|
|
static c4iw_handler_func work_handlers[NUM_CPL_CMDS + NUM_FAKE_CPLS] = {
|
|
[CPL_ACT_ESTABLISH] = act_establish,
|
|
[CPL_ACT_OPEN_RPL] = act_open_rpl,
|
|
[CPL_RX_DATA] = rx_data,
|
|
[CPL_ABORT_RPL_RSS] = abort_rpl,
|
|
[CPL_ABORT_RPL] = abort_rpl,
|
|
[CPL_PASS_OPEN_RPL] = pass_open_rpl,
|
|
[CPL_CLOSE_LISTSRV_RPL] = close_listsrv_rpl,
|
|
[CPL_PASS_ACCEPT_REQ] = pass_accept_req,
|
|
[CPL_PASS_ESTABLISH] = pass_establish,
|
|
[CPL_PEER_CLOSE] = peer_close,
|
|
[CPL_ABORT_REQ_RSS] = peer_abort,
|
|
[CPL_CLOSE_CON_RPL] = close_con_rpl,
|
|
[CPL_RDMA_TERMINATE] = terminate,
|
|
[CPL_FW4_ACK] = fw4_ack,
|
|
[CPL_FW6_MSG] = deferred_fw6_msg,
|
|
[CPL_RX_PKT] = rx_pkt,
|
|
[FAKE_CPL_PUT_EP_SAFE] = _put_ep_safe,
|
|
[FAKE_CPL_PASS_PUT_EP_SAFE] = _put_pass_ep_safe
|
|
};
|
|
|
|
static void process_timeout(struct c4iw_ep *ep)
|
|
{
|
|
struct c4iw_qp_attributes attrs;
|
|
int abort = 1;
|
|
|
|
mutex_lock(&ep->com.mutex);
|
|
PDBG("%s ep %p tid %u state %d\n", __func__, ep, ep->hwtid,
|
|
ep->com.state);
|
|
set_bit(TIMEDOUT, &ep->com.history);
|
|
switch (ep->com.state) {
|
|
case MPA_REQ_SENT:
|
|
connect_reply_upcall(ep, -ETIMEDOUT);
|
|
break;
|
|
case MPA_REQ_WAIT:
|
|
case MPA_REQ_RCVD:
|
|
case MPA_REP_SENT:
|
|
case FPDU_MODE:
|
|
break;
|
|
case CLOSING:
|
|
case MORIBUND:
|
|
if (ep->com.cm_id && ep->com.qp) {
|
|
attrs.next_state = C4IW_QP_STATE_ERROR;
|
|
c4iw_modify_qp(ep->com.qp->rhp,
|
|
ep->com.qp, C4IW_QP_ATTR_NEXT_STATE,
|
|
&attrs, 1);
|
|
}
|
|
close_complete_upcall(ep, -ETIMEDOUT);
|
|
break;
|
|
case ABORTING:
|
|
case DEAD:
|
|
|
|
/*
|
|
* These states are expected if the ep timed out at the same
|
|
* time as another thread was calling stop_ep_timer().
|
|
* So we silently do nothing for these states.
|
|
*/
|
|
abort = 0;
|
|
break;
|
|
default:
|
|
WARN(1, "%s unexpected state ep %p tid %u state %u\n",
|
|
__func__, ep, ep->hwtid, ep->com.state);
|
|
abort = 0;
|
|
}
|
|
mutex_unlock(&ep->com.mutex);
|
|
if (abort)
|
|
c4iw_ep_disconnect(ep, 1, GFP_KERNEL);
|
|
c4iw_put_ep(&ep->com);
|
|
}
|
|
|
|
static void process_timedout_eps(void)
|
|
{
|
|
struct c4iw_ep *ep;
|
|
|
|
spin_lock_irq(&timeout_lock);
|
|
while (!list_empty(&timeout_list)) {
|
|
struct list_head *tmp;
|
|
|
|
tmp = timeout_list.next;
|
|
list_del(tmp);
|
|
tmp->next = NULL;
|
|
tmp->prev = NULL;
|
|
spin_unlock_irq(&timeout_lock);
|
|
ep = list_entry(tmp, struct c4iw_ep, entry);
|
|
process_timeout(ep);
|
|
spin_lock_irq(&timeout_lock);
|
|
}
|
|
spin_unlock_irq(&timeout_lock);
|
|
}
|
|
|
|
static void process_work(struct work_struct *work)
|
|
{
|
|
struct sk_buff *skb = NULL;
|
|
struct c4iw_dev *dev;
|
|
struct cpl_act_establish *rpl;
|
|
unsigned int opcode;
|
|
int ret;
|
|
|
|
process_timedout_eps();
|
|
while ((skb = skb_dequeue(&rxq))) {
|
|
rpl = cplhdr(skb);
|
|
dev = *((struct c4iw_dev **) (skb->cb + sizeof(void *)));
|
|
opcode = rpl->ot.opcode;
|
|
|
|
BUG_ON(!work_handlers[opcode]);
|
|
ret = work_handlers[opcode](dev, skb);
|
|
if (!ret)
|
|
kfree_skb(skb);
|
|
process_timedout_eps();
|
|
}
|
|
}
|
|
|
|
static DECLARE_WORK(skb_work, process_work);
|
|
|
|
static void ep_timeout(unsigned long arg)
|
|
{
|
|
struct c4iw_ep *ep = (struct c4iw_ep *)arg;
|
|
int kickit = 0;
|
|
|
|
spin_lock(&timeout_lock);
|
|
if (!test_and_set_bit(TIMEOUT, &ep->com.flags)) {
|
|
/*
|
|
* Only insert if it is not already on the list.
|
|
*/
|
|
if (!ep->entry.next) {
|
|
list_add_tail(&ep->entry, &timeout_list);
|
|
kickit = 1;
|
|
}
|
|
}
|
|
spin_unlock(&timeout_lock);
|
|
if (kickit)
|
|
queue_work(workq, &skb_work);
|
|
}
|
|
|
|
/*
|
|
* All the CM events are handled on a work queue to have a safe context.
|
|
*/
|
|
static int sched(struct c4iw_dev *dev, struct sk_buff *skb)
|
|
{
|
|
|
|
/*
|
|
* Save dev in the skb->cb area.
|
|
*/
|
|
*((struct c4iw_dev **) (skb->cb + sizeof(void *))) = dev;
|
|
|
|
/*
|
|
* Queue the skb and schedule the worker thread.
|
|
*/
|
|
skb_queue_tail(&rxq, skb);
|
|
queue_work(workq, &skb_work);
|
|
return 0;
|
|
}
|
|
|
|
static int set_tcb_rpl(struct c4iw_dev *dev, struct sk_buff *skb)
|
|
{
|
|
struct cpl_set_tcb_rpl *rpl = cplhdr(skb);
|
|
|
|
if (rpl->status != CPL_ERR_NONE) {
|
|
printk(KERN_ERR MOD "Unexpected SET_TCB_RPL status %u "
|
|
"for tid %u\n", rpl->status, GET_TID(rpl));
|
|
}
|
|
kfree_skb(skb);
|
|
return 0;
|
|
}
|
|
|
|
static int fw6_msg(struct c4iw_dev *dev, struct sk_buff *skb)
|
|
{
|
|
struct cpl_fw6_msg *rpl = cplhdr(skb);
|
|
struct c4iw_wr_wait *wr_waitp;
|
|
int ret;
|
|
|
|
PDBG("%s type %u\n", __func__, rpl->type);
|
|
|
|
switch (rpl->type) {
|
|
case FW6_TYPE_WR_RPL:
|
|
ret = (int)((be64_to_cpu(rpl->data[0]) >> 8) & 0xff);
|
|
wr_waitp = (struct c4iw_wr_wait *)(__force unsigned long) rpl->data[1];
|
|
PDBG("%s wr_waitp %p ret %u\n", __func__, wr_waitp, ret);
|
|
if (wr_waitp)
|
|
c4iw_wake_up(wr_waitp, ret ? -ret : 0);
|
|
kfree_skb(skb);
|
|
break;
|
|
case FW6_TYPE_CQE:
|
|
case FW6_TYPE_OFLD_CONNECTION_WR_RPL:
|
|
sched(dev, skb);
|
|
break;
|
|
default:
|
|
printk(KERN_ERR MOD "%s unexpected fw6 msg type %u\n", __func__,
|
|
rpl->type);
|
|
kfree_skb(skb);
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int peer_abort_intr(struct c4iw_dev *dev, struct sk_buff *skb)
|
|
{
|
|
struct cpl_abort_req_rss *req = cplhdr(skb);
|
|
struct c4iw_ep *ep;
|
|
unsigned int tid = GET_TID(req);
|
|
|
|
ep = get_ep_from_tid(dev, tid);
|
|
/* This EP will be dereferenced in peer_abort() */
|
|
if (!ep) {
|
|
printk(KERN_WARNING MOD
|
|
"Abort on non-existent endpoint, tid %d\n", tid);
|
|
kfree_skb(skb);
|
|
return 0;
|
|
}
|
|
if (cxgb_is_neg_adv(req->status)) {
|
|
PDBG("%s Negative advice on abort- tid %u status %d (%s)\n",
|
|
__func__, ep->hwtid, req->status,
|
|
neg_adv_str(req->status));
|
|
goto out;
|
|
}
|
|
PDBG("%s ep %p tid %u state %u\n", __func__, ep, ep->hwtid,
|
|
ep->com.state);
|
|
|
|
c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET);
|
|
out:
|
|
sched(dev, skb);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Most upcalls from the T4 Core go to sched() to
|
|
* schedule the processing on a work queue.
|
|
*/
|
|
c4iw_handler_func c4iw_handlers[NUM_CPL_CMDS] = {
|
|
[CPL_ACT_ESTABLISH] = sched,
|
|
[CPL_ACT_OPEN_RPL] = sched,
|
|
[CPL_RX_DATA] = sched,
|
|
[CPL_ABORT_RPL_RSS] = sched,
|
|
[CPL_ABORT_RPL] = sched,
|
|
[CPL_PASS_OPEN_RPL] = sched,
|
|
[CPL_CLOSE_LISTSRV_RPL] = sched,
|
|
[CPL_PASS_ACCEPT_REQ] = sched,
|
|
[CPL_PASS_ESTABLISH] = sched,
|
|
[CPL_PEER_CLOSE] = sched,
|
|
[CPL_CLOSE_CON_RPL] = sched,
|
|
[CPL_ABORT_REQ_RSS] = peer_abort_intr,
|
|
[CPL_RDMA_TERMINATE] = sched,
|
|
[CPL_FW4_ACK] = sched,
|
|
[CPL_SET_TCB_RPL] = set_tcb_rpl,
|
|
[CPL_FW6_MSG] = fw6_msg,
|
|
[CPL_RX_PKT] = sched
|
|
};
|
|
|
|
int __init c4iw_cm_init(void)
|
|
{
|
|
spin_lock_init(&timeout_lock);
|
|
skb_queue_head_init(&rxq);
|
|
|
|
workq = alloc_ordered_workqueue("iw_cxgb4", WQ_MEM_RECLAIM);
|
|
if (!workq)
|
|
return -ENOMEM;
|
|
|
|
return 0;
|
|
}
|
|
|
|
void c4iw_cm_term(void)
|
|
{
|
|
WARN_ON(!list_empty(&timeout_list));
|
|
flush_workqueue(workq);
|
|
destroy_workqueue(workq);
|
|
}
|