![Steve Wise](/assets/img/avatar_default.png)
Massage the err_handler upcall into an event handler upcall, pass netdev port events to the cxgb3 ULPs and generate RDMA port events based on LLD port events. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
1421 lines
37 KiB
C
1421 lines
37 KiB
C
/*
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* Copyright (c) 2006-2008 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/list.h>
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#include <net/neighbour.h>
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#include <linux/notifier.h>
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#include <asm/atomic.h>
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#include <linux/proc_fs.h>
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#include <linux/if_vlan.h>
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#include <net/netevent.h>
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#include <linux/highmem.h>
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#include <linux/vmalloc.h>
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#include "common.h"
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#include "regs.h"
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#include "cxgb3_ioctl.h"
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#include "cxgb3_ctl_defs.h"
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#include "cxgb3_defs.h"
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#include "l2t.h"
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#include "firmware_exports.h"
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#include "cxgb3_offload.h"
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static LIST_HEAD(client_list);
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static LIST_HEAD(ofld_dev_list);
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static DEFINE_MUTEX(cxgb3_db_lock);
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static DEFINE_RWLOCK(adapter_list_lock);
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static LIST_HEAD(adapter_list);
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static const unsigned int MAX_ATIDS = 64 * 1024;
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static const unsigned int ATID_BASE = 0x10000;
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static inline int offload_activated(struct t3cdev *tdev)
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{
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const struct adapter *adapter = tdev2adap(tdev);
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return (test_bit(OFFLOAD_DEVMAP_BIT, &adapter->open_device_map));
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}
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/**
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* cxgb3_register_client - register an offload client
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* @client: the client
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*
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* Add the client to the client list,
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* and call backs the client for each activated offload device
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*/
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void cxgb3_register_client(struct cxgb3_client *client)
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{
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struct t3cdev *tdev;
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mutex_lock(&cxgb3_db_lock);
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list_add_tail(&client->client_list, &client_list);
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if (client->add) {
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list_for_each_entry(tdev, &ofld_dev_list, ofld_dev_list) {
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if (offload_activated(tdev))
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client->add(tdev);
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}
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}
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mutex_unlock(&cxgb3_db_lock);
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}
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EXPORT_SYMBOL(cxgb3_register_client);
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/**
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* cxgb3_unregister_client - unregister an offload client
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* @client: the client
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*
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* Remove the client to the client list,
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* and call backs the client for each activated offload device.
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*/
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void cxgb3_unregister_client(struct cxgb3_client *client)
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{
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struct t3cdev *tdev;
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mutex_lock(&cxgb3_db_lock);
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list_del(&client->client_list);
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if (client->remove) {
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list_for_each_entry(tdev, &ofld_dev_list, ofld_dev_list) {
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if (offload_activated(tdev))
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client->remove(tdev);
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}
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}
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mutex_unlock(&cxgb3_db_lock);
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}
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EXPORT_SYMBOL(cxgb3_unregister_client);
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/**
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* cxgb3_add_clients - activate registered clients for an offload device
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* @tdev: the offload device
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*
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* Call backs all registered clients once a offload device is activated
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*/
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void cxgb3_add_clients(struct t3cdev *tdev)
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{
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struct cxgb3_client *client;
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mutex_lock(&cxgb3_db_lock);
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list_for_each_entry(client, &client_list, client_list) {
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if (client->add)
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client->add(tdev);
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}
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mutex_unlock(&cxgb3_db_lock);
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}
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/**
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* cxgb3_remove_clients - deactivates registered clients
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* for an offload device
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* @tdev: the offload device
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*
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* Call backs all registered clients once a offload device is deactivated
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*/
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void cxgb3_remove_clients(struct t3cdev *tdev)
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{
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struct cxgb3_client *client;
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mutex_lock(&cxgb3_db_lock);
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list_for_each_entry(client, &client_list, client_list) {
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if (client->remove)
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client->remove(tdev);
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}
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mutex_unlock(&cxgb3_db_lock);
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}
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void cxgb3_event_notify(struct t3cdev *tdev, u32 event, u32 port)
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{
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struct cxgb3_client *client;
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mutex_lock(&cxgb3_db_lock);
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list_for_each_entry(client, &client_list, client_list) {
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if (client->event_handler)
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client->event_handler(tdev, event, port);
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}
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mutex_unlock(&cxgb3_db_lock);
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}
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static struct net_device *get_iff_from_mac(struct adapter *adapter,
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const unsigned char *mac,
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unsigned int vlan)
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{
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int i;
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for_each_port(adapter, i) {
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struct vlan_group *grp;
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struct net_device *dev = adapter->port[i];
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const struct port_info *p = netdev_priv(dev);
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if (!memcmp(dev->dev_addr, mac, ETH_ALEN)) {
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if (vlan && vlan != VLAN_VID_MASK) {
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grp = p->vlan_grp;
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dev = NULL;
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if (grp)
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dev = vlan_group_get_device(grp, vlan);
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} else
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while (dev->master)
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dev = dev->master;
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return dev;
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}
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}
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return NULL;
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}
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static int cxgb_ulp_iscsi_ctl(struct adapter *adapter, unsigned int req,
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void *data)
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{
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int i;
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int ret = 0;
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unsigned int val = 0;
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struct ulp_iscsi_info *uiip = data;
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switch (req) {
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case ULP_ISCSI_GET_PARAMS:
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uiip->pdev = adapter->pdev;
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uiip->llimit = t3_read_reg(adapter, A_ULPRX_ISCSI_LLIMIT);
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uiip->ulimit = t3_read_reg(adapter, A_ULPRX_ISCSI_ULIMIT);
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uiip->tagmask = t3_read_reg(adapter, A_ULPRX_ISCSI_TAGMASK);
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val = t3_read_reg(adapter, A_ULPRX_ISCSI_PSZ);
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for (i = 0; i < 4; i++, val >>= 8)
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uiip->pgsz_factor[i] = val & 0xFF;
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val = t3_read_reg(adapter, A_TP_PARA_REG7);
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uiip->max_txsz =
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uiip->max_rxsz = min((val >> S_PMMAXXFERLEN0)&M_PMMAXXFERLEN0,
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(val >> S_PMMAXXFERLEN1)&M_PMMAXXFERLEN1);
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/*
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* On tx, the iscsi pdu has to be <= tx page size and has to
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* fit into the Tx PM FIFO.
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*/
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val = min(adapter->params.tp.tx_pg_size,
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t3_read_reg(adapter, A_PM1_TX_CFG) >> 17);
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uiip->max_txsz = min(val, uiip->max_txsz);
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/* set MaxRxData to 16224 */
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val = t3_read_reg(adapter, A_TP_PARA_REG2);
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if ((val >> S_MAXRXDATA) != 0x3f60) {
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val &= (M_RXCOALESCESIZE << S_RXCOALESCESIZE);
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val |= V_MAXRXDATA(0x3f60);
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printk(KERN_INFO
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"%s, iscsi set MaxRxData to 16224 (0x%x).\n",
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adapter->name, val);
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t3_write_reg(adapter, A_TP_PARA_REG2, val);
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}
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/*
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* on rx, the iscsi pdu has to be < rx page size and the
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* the max rx data length programmed in TP
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*/
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val = min(adapter->params.tp.rx_pg_size,
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((t3_read_reg(adapter, A_TP_PARA_REG2)) >>
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S_MAXRXDATA) & M_MAXRXDATA);
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uiip->max_rxsz = min(val, uiip->max_rxsz);
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break;
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case ULP_ISCSI_SET_PARAMS:
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t3_write_reg(adapter, A_ULPRX_ISCSI_TAGMASK, uiip->tagmask);
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/* program the ddp page sizes */
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for (i = 0; i < 4; i++)
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val |= (uiip->pgsz_factor[i] & 0xF) << (8 * i);
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if (val && (val != t3_read_reg(adapter, A_ULPRX_ISCSI_PSZ))) {
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printk(KERN_INFO
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"%s, setting iscsi pgsz 0x%x, %u,%u,%u,%u.\n",
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adapter->name, val, uiip->pgsz_factor[0],
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uiip->pgsz_factor[1], uiip->pgsz_factor[2],
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uiip->pgsz_factor[3]);
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t3_write_reg(adapter, A_ULPRX_ISCSI_PSZ, val);
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}
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break;
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default:
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ret = -EOPNOTSUPP;
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}
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return ret;
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}
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/* Response queue used for RDMA events. */
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#define ASYNC_NOTIF_RSPQ 0
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static int cxgb_rdma_ctl(struct adapter *adapter, unsigned int req, void *data)
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{
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int ret = 0;
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switch (req) {
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case RDMA_GET_PARAMS: {
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struct rdma_info *rdma = data;
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struct pci_dev *pdev = adapter->pdev;
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rdma->udbell_physbase = pci_resource_start(pdev, 2);
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rdma->udbell_len = pci_resource_len(pdev, 2);
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rdma->tpt_base =
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t3_read_reg(adapter, A_ULPTX_TPT_LLIMIT);
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rdma->tpt_top = t3_read_reg(adapter, A_ULPTX_TPT_ULIMIT);
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rdma->pbl_base =
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t3_read_reg(adapter, A_ULPTX_PBL_LLIMIT);
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rdma->pbl_top = t3_read_reg(adapter, A_ULPTX_PBL_ULIMIT);
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rdma->rqt_base = t3_read_reg(adapter, A_ULPRX_RQ_LLIMIT);
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rdma->rqt_top = t3_read_reg(adapter, A_ULPRX_RQ_ULIMIT);
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rdma->kdb_addr = adapter->regs + A_SG_KDOORBELL;
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rdma->pdev = pdev;
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break;
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}
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case RDMA_CQ_OP:{
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unsigned long flags;
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struct rdma_cq_op *rdma = data;
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/* may be called in any context */
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spin_lock_irqsave(&adapter->sge.reg_lock, flags);
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ret = t3_sge_cqcntxt_op(adapter, rdma->id, rdma->op,
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rdma->credits);
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spin_unlock_irqrestore(&adapter->sge.reg_lock, flags);
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break;
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}
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case RDMA_GET_MEM:{
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struct ch_mem_range *t = data;
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struct mc7 *mem;
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if ((t->addr & 7) || (t->len & 7))
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return -EINVAL;
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if (t->mem_id == MEM_CM)
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mem = &adapter->cm;
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else if (t->mem_id == MEM_PMRX)
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mem = &adapter->pmrx;
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else if (t->mem_id == MEM_PMTX)
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mem = &adapter->pmtx;
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else
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return -EINVAL;
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ret =
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t3_mc7_bd_read(mem, t->addr / 8, t->len / 8,
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(u64 *) t->buf);
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if (ret)
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return ret;
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break;
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}
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case RDMA_CQ_SETUP:{
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struct rdma_cq_setup *rdma = data;
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spin_lock_irq(&adapter->sge.reg_lock);
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ret =
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t3_sge_init_cqcntxt(adapter, rdma->id,
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rdma->base_addr, rdma->size,
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ASYNC_NOTIF_RSPQ,
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rdma->ovfl_mode, rdma->credits,
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rdma->credit_thres);
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spin_unlock_irq(&adapter->sge.reg_lock);
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break;
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}
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case RDMA_CQ_DISABLE:
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spin_lock_irq(&adapter->sge.reg_lock);
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ret = t3_sge_disable_cqcntxt(adapter, *(unsigned int *)data);
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spin_unlock_irq(&adapter->sge.reg_lock);
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break;
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case RDMA_CTRL_QP_SETUP:{
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struct rdma_ctrlqp_setup *rdma = data;
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spin_lock_irq(&adapter->sge.reg_lock);
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ret = t3_sge_init_ecntxt(adapter, FW_RI_SGEEC_START, 0,
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SGE_CNTXT_RDMA,
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ASYNC_NOTIF_RSPQ,
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rdma->base_addr, rdma->size,
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FW_RI_TID_START, 1, 0);
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spin_unlock_irq(&adapter->sge.reg_lock);
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break;
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}
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case RDMA_GET_MIB: {
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spin_lock(&adapter->stats_lock);
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t3_tp_get_mib_stats(adapter, (struct tp_mib_stats *)data);
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spin_unlock(&adapter->stats_lock);
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break;
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}
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default:
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ret = -EOPNOTSUPP;
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}
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return ret;
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}
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static int cxgb_offload_ctl(struct t3cdev *tdev, unsigned int req, void *data)
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{
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struct adapter *adapter = tdev2adap(tdev);
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struct tid_range *tid;
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struct mtutab *mtup;
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struct iff_mac *iffmacp;
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struct ddp_params *ddpp;
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struct adap_ports *ports;
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struct ofld_page_info *rx_page_info;
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struct tp_params *tp = &adapter->params.tp;
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int i;
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switch (req) {
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case GET_MAX_OUTSTANDING_WR:
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*(unsigned int *)data = FW_WR_NUM;
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break;
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case GET_WR_LEN:
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*(unsigned int *)data = WR_FLITS;
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break;
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case GET_TX_MAX_CHUNK:
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*(unsigned int *)data = 1 << 20; /* 1MB */
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break;
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case GET_TID_RANGE:
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tid = data;
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tid->num = t3_mc5_size(&adapter->mc5) -
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adapter->params.mc5.nroutes -
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adapter->params.mc5.nfilters - adapter->params.mc5.nservers;
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tid->base = 0;
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break;
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case GET_STID_RANGE:
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tid = data;
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tid->num = adapter->params.mc5.nservers;
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tid->base = t3_mc5_size(&adapter->mc5) - tid->num -
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adapter->params.mc5.nfilters - adapter->params.mc5.nroutes;
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break;
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case GET_L2T_CAPACITY:
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*(unsigned int *)data = 2048;
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break;
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case GET_MTUS:
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mtup = data;
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mtup->size = NMTUS;
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mtup->mtus = adapter->params.mtus;
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break;
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case GET_IFF_FROM_MAC:
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iffmacp = data;
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iffmacp->dev = get_iff_from_mac(adapter, iffmacp->mac_addr,
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iffmacp->vlan_tag &
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VLAN_VID_MASK);
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break;
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case GET_DDP_PARAMS:
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ddpp = data;
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ddpp->llimit = t3_read_reg(adapter, A_ULPRX_TDDP_LLIMIT);
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ddpp->ulimit = t3_read_reg(adapter, A_ULPRX_TDDP_ULIMIT);
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ddpp->tag_mask = t3_read_reg(adapter, A_ULPRX_TDDP_TAGMASK);
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break;
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case GET_PORTS:
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ports = data;
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ports->nports = adapter->params.nports;
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for_each_port(adapter, i)
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ports->lldevs[i] = adapter->port[i];
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break;
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case ULP_ISCSI_GET_PARAMS:
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case ULP_ISCSI_SET_PARAMS:
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if (!offload_running(adapter))
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return -EAGAIN;
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return cxgb_ulp_iscsi_ctl(adapter, req, data);
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case RDMA_GET_PARAMS:
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case RDMA_CQ_OP:
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case RDMA_CQ_SETUP:
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case RDMA_CQ_DISABLE:
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case RDMA_CTRL_QP_SETUP:
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case RDMA_GET_MEM:
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case RDMA_GET_MIB:
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if (!offload_running(adapter))
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return -EAGAIN;
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return cxgb_rdma_ctl(adapter, req, data);
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case GET_RX_PAGE_INFO:
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rx_page_info = data;
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rx_page_info->page_size = tp->rx_pg_size;
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rx_page_info->num = tp->rx_num_pgs;
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break;
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case GET_ISCSI_IPV4ADDR: {
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struct iscsi_ipv4addr *p = data;
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struct port_info *pi = netdev_priv(p->dev);
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p->ipv4addr = pi->iscsi_ipv4addr;
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break;
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}
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case GET_EMBEDDED_INFO: {
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struct ch_embedded_info *e = data;
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spin_lock(&adapter->stats_lock);
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t3_get_fw_version(adapter, &e->fw_vers);
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t3_get_tp_version(adapter, &e->tp_vers);
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spin_unlock(&adapter->stats_lock);
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break;
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}
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default:
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return -EOPNOTSUPP;
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}
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return 0;
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}
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/*
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* Dummy handler for Rx offload packets in case we get an offload packet before
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* proper processing is setup. This complains and drops the packet as it isn't
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|
* normal to get offload packets at this stage.
|
|
*/
|
|
static int rx_offload_blackhole(struct t3cdev *dev, struct sk_buff **skbs,
|
|
int n)
|
|
{
|
|
while (n--)
|
|
dev_kfree_skb_any(skbs[n]);
|
|
return 0;
|
|
}
|
|
|
|
static void dummy_neigh_update(struct t3cdev *dev, struct neighbour *neigh)
|
|
{
|
|
}
|
|
|
|
void cxgb3_set_dummy_ops(struct t3cdev *dev)
|
|
{
|
|
dev->recv = rx_offload_blackhole;
|
|
dev->neigh_update = dummy_neigh_update;
|
|
}
|
|
|
|
/*
|
|
* Free an active-open TID.
|
|
*/
|
|
void *cxgb3_free_atid(struct t3cdev *tdev, int atid)
|
|
{
|
|
struct tid_info *t = &(T3C_DATA(tdev))->tid_maps;
|
|
union active_open_entry *p = atid2entry(t, atid);
|
|
void *ctx = p->t3c_tid.ctx;
|
|
|
|
spin_lock_bh(&t->atid_lock);
|
|
p->next = t->afree;
|
|
t->afree = p;
|
|
t->atids_in_use--;
|
|
spin_unlock_bh(&t->atid_lock);
|
|
|
|
return ctx;
|
|
}
|
|
|
|
EXPORT_SYMBOL(cxgb3_free_atid);
|
|
|
|
/*
|
|
* Free a server TID and return it to the free pool.
|
|
*/
|
|
void cxgb3_free_stid(struct t3cdev *tdev, int stid)
|
|
{
|
|
struct tid_info *t = &(T3C_DATA(tdev))->tid_maps;
|
|
union listen_entry *p = stid2entry(t, stid);
|
|
|
|
spin_lock_bh(&t->stid_lock);
|
|
p->next = t->sfree;
|
|
t->sfree = p;
|
|
t->stids_in_use--;
|
|
spin_unlock_bh(&t->stid_lock);
|
|
}
|
|
|
|
EXPORT_SYMBOL(cxgb3_free_stid);
|
|
|
|
void cxgb3_insert_tid(struct t3cdev *tdev, struct cxgb3_client *client,
|
|
void *ctx, unsigned int tid)
|
|
{
|
|
struct tid_info *t = &(T3C_DATA(tdev))->tid_maps;
|
|
|
|
t->tid_tab[tid].client = client;
|
|
t->tid_tab[tid].ctx = ctx;
|
|
atomic_inc(&t->tids_in_use);
|
|
}
|
|
|
|
EXPORT_SYMBOL(cxgb3_insert_tid);
|
|
|
|
/*
|
|
* Populate a TID_RELEASE WR. The skb must be already propely sized.
|
|
*/
|
|
static inline void mk_tid_release(struct sk_buff *skb, unsigned int tid)
|
|
{
|
|
struct cpl_tid_release *req;
|
|
|
|
skb->priority = CPL_PRIORITY_SETUP;
|
|
req = (struct cpl_tid_release *)__skb_put(skb, sizeof(*req));
|
|
req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD));
|
|
OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_TID_RELEASE, tid));
|
|
}
|
|
|
|
static void t3_process_tid_release_list(struct work_struct *work)
|
|
{
|
|
struct t3c_data *td = container_of(work, struct t3c_data,
|
|
tid_release_task);
|
|
struct sk_buff *skb;
|
|
struct t3cdev *tdev = td->dev;
|
|
|
|
|
|
spin_lock_bh(&td->tid_release_lock);
|
|
while (td->tid_release_list) {
|
|
struct t3c_tid_entry *p = td->tid_release_list;
|
|
|
|
td->tid_release_list = (struct t3c_tid_entry *)p->ctx;
|
|
spin_unlock_bh(&td->tid_release_lock);
|
|
|
|
skb = alloc_skb(sizeof(struct cpl_tid_release),
|
|
GFP_KERNEL);
|
|
if (!skb)
|
|
skb = td->nofail_skb;
|
|
if (!skb) {
|
|
spin_lock_bh(&td->tid_release_lock);
|
|
p->ctx = (void *)td->tid_release_list;
|
|
td->tid_release_list = (struct t3c_tid_entry *)p;
|
|
break;
|
|
}
|
|
mk_tid_release(skb, p - td->tid_maps.tid_tab);
|
|
cxgb3_ofld_send(tdev, skb);
|
|
p->ctx = NULL;
|
|
if (skb == td->nofail_skb)
|
|
td->nofail_skb =
|
|
alloc_skb(sizeof(struct cpl_tid_release),
|
|
GFP_KERNEL);
|
|
spin_lock_bh(&td->tid_release_lock);
|
|
}
|
|
td->release_list_incomplete = (td->tid_release_list == NULL) ? 0 : 1;
|
|
spin_unlock_bh(&td->tid_release_lock);
|
|
|
|
if (!td->nofail_skb)
|
|
td->nofail_skb =
|
|
alloc_skb(sizeof(struct cpl_tid_release),
|
|
GFP_KERNEL);
|
|
}
|
|
|
|
/* use ctx as a next pointer in the tid release list */
|
|
void cxgb3_queue_tid_release(struct t3cdev *tdev, unsigned int tid)
|
|
{
|
|
struct t3c_data *td = T3C_DATA(tdev);
|
|
struct t3c_tid_entry *p = &td->tid_maps.tid_tab[tid];
|
|
|
|
spin_lock_bh(&td->tid_release_lock);
|
|
p->ctx = (void *)td->tid_release_list;
|
|
p->client = NULL;
|
|
td->tid_release_list = p;
|
|
if (!p->ctx || td->release_list_incomplete)
|
|
schedule_work(&td->tid_release_task);
|
|
spin_unlock_bh(&td->tid_release_lock);
|
|
}
|
|
|
|
EXPORT_SYMBOL(cxgb3_queue_tid_release);
|
|
|
|
/*
|
|
* Remove a tid from the TID table. A client may defer processing its last
|
|
* CPL message if it is locked at the time it arrives, and while the message
|
|
* sits in the client's backlog the TID may be reused for another connection.
|
|
* To handle this we atomically switch the TID association if it still points
|
|
* to the original client context.
|
|
*/
|
|
void cxgb3_remove_tid(struct t3cdev *tdev, void *ctx, unsigned int tid)
|
|
{
|
|
struct tid_info *t = &(T3C_DATA(tdev))->tid_maps;
|
|
|
|
BUG_ON(tid >= t->ntids);
|
|
if (tdev->type == T3A)
|
|
(void)cmpxchg(&t->tid_tab[tid].ctx, ctx, NULL);
|
|
else {
|
|
struct sk_buff *skb;
|
|
|
|
skb = alloc_skb(sizeof(struct cpl_tid_release), GFP_ATOMIC);
|
|
if (likely(skb)) {
|
|
mk_tid_release(skb, tid);
|
|
cxgb3_ofld_send(tdev, skb);
|
|
t->tid_tab[tid].ctx = NULL;
|
|
} else
|
|
cxgb3_queue_tid_release(tdev, tid);
|
|
}
|
|
atomic_dec(&t->tids_in_use);
|
|
}
|
|
|
|
EXPORT_SYMBOL(cxgb3_remove_tid);
|
|
|
|
int cxgb3_alloc_atid(struct t3cdev *tdev, struct cxgb3_client *client,
|
|
void *ctx)
|
|
{
|
|
int atid = -1;
|
|
struct tid_info *t = &(T3C_DATA(tdev))->tid_maps;
|
|
|
|
spin_lock_bh(&t->atid_lock);
|
|
if (t->afree &&
|
|
t->atids_in_use + atomic_read(&t->tids_in_use) + MC5_MIN_TIDS <=
|
|
t->ntids) {
|
|
union active_open_entry *p = t->afree;
|
|
|
|
atid = (p - t->atid_tab) + t->atid_base;
|
|
t->afree = p->next;
|
|
p->t3c_tid.ctx = ctx;
|
|
p->t3c_tid.client = client;
|
|
t->atids_in_use++;
|
|
}
|
|
spin_unlock_bh(&t->atid_lock);
|
|
return atid;
|
|
}
|
|
|
|
EXPORT_SYMBOL(cxgb3_alloc_atid);
|
|
|
|
int cxgb3_alloc_stid(struct t3cdev *tdev, struct cxgb3_client *client,
|
|
void *ctx)
|
|
{
|
|
int stid = -1;
|
|
struct tid_info *t = &(T3C_DATA(tdev))->tid_maps;
|
|
|
|
spin_lock_bh(&t->stid_lock);
|
|
if (t->sfree) {
|
|
union listen_entry *p = t->sfree;
|
|
|
|
stid = (p - t->stid_tab) + t->stid_base;
|
|
t->sfree = p->next;
|
|
p->t3c_tid.ctx = ctx;
|
|
p->t3c_tid.client = client;
|
|
t->stids_in_use++;
|
|
}
|
|
spin_unlock_bh(&t->stid_lock);
|
|
return stid;
|
|
}
|
|
|
|
EXPORT_SYMBOL(cxgb3_alloc_stid);
|
|
|
|
/* Get the t3cdev associated with a net_device */
|
|
struct t3cdev *dev2t3cdev(struct net_device *dev)
|
|
{
|
|
const struct port_info *pi = netdev_priv(dev);
|
|
|
|
return (struct t3cdev *)pi->adapter;
|
|
}
|
|
|
|
EXPORT_SYMBOL(dev2t3cdev);
|
|
|
|
static int do_smt_write_rpl(struct t3cdev *dev, struct sk_buff *skb)
|
|
{
|
|
struct cpl_smt_write_rpl *rpl = cplhdr(skb);
|
|
|
|
if (rpl->status != CPL_ERR_NONE)
|
|
printk(KERN_ERR
|
|
"Unexpected SMT_WRITE_RPL status %u for entry %u\n",
|
|
rpl->status, GET_TID(rpl));
|
|
|
|
return CPL_RET_BUF_DONE;
|
|
}
|
|
|
|
static int do_l2t_write_rpl(struct t3cdev *dev, struct sk_buff *skb)
|
|
{
|
|
struct cpl_l2t_write_rpl *rpl = cplhdr(skb);
|
|
|
|
if (rpl->status != CPL_ERR_NONE)
|
|
printk(KERN_ERR
|
|
"Unexpected L2T_WRITE_RPL status %u for entry %u\n",
|
|
rpl->status, GET_TID(rpl));
|
|
|
|
return CPL_RET_BUF_DONE;
|
|
}
|
|
|
|
static int do_rte_write_rpl(struct t3cdev *dev, struct sk_buff *skb)
|
|
{
|
|
struct cpl_rte_write_rpl *rpl = cplhdr(skb);
|
|
|
|
if (rpl->status != CPL_ERR_NONE)
|
|
printk(KERN_ERR
|
|
"Unexpected RTE_WRITE_RPL status %u for entry %u\n",
|
|
rpl->status, GET_TID(rpl));
|
|
|
|
return CPL_RET_BUF_DONE;
|
|
}
|
|
|
|
static int do_act_open_rpl(struct t3cdev *dev, struct sk_buff *skb)
|
|
{
|
|
struct cpl_act_open_rpl *rpl = cplhdr(skb);
|
|
unsigned int atid = G_TID(ntohl(rpl->atid));
|
|
struct t3c_tid_entry *t3c_tid;
|
|
|
|
t3c_tid = lookup_atid(&(T3C_DATA(dev))->tid_maps, atid);
|
|
if (t3c_tid && t3c_tid->ctx && t3c_tid->client &&
|
|
t3c_tid->client->handlers &&
|
|
t3c_tid->client->handlers[CPL_ACT_OPEN_RPL]) {
|
|
return t3c_tid->client->handlers[CPL_ACT_OPEN_RPL] (dev, skb,
|
|
t3c_tid->
|
|
ctx);
|
|
} else {
|
|
printk(KERN_ERR "%s: received clientless CPL command 0x%x\n",
|
|
dev->name, CPL_ACT_OPEN_RPL);
|
|
return CPL_RET_BUF_DONE | CPL_RET_BAD_MSG;
|
|
}
|
|
}
|
|
|
|
static int do_stid_rpl(struct t3cdev *dev, struct sk_buff *skb)
|
|
{
|
|
union opcode_tid *p = cplhdr(skb);
|
|
unsigned int stid = G_TID(ntohl(p->opcode_tid));
|
|
struct t3c_tid_entry *t3c_tid;
|
|
|
|
t3c_tid = lookup_stid(&(T3C_DATA(dev))->tid_maps, stid);
|
|
if (t3c_tid && t3c_tid->ctx && t3c_tid->client->handlers &&
|
|
t3c_tid->client->handlers[p->opcode]) {
|
|
return t3c_tid->client->handlers[p->opcode] (dev, skb,
|
|
t3c_tid->ctx);
|
|
} else {
|
|
printk(KERN_ERR "%s: received clientless CPL command 0x%x\n",
|
|
dev->name, p->opcode);
|
|
return CPL_RET_BUF_DONE | CPL_RET_BAD_MSG;
|
|
}
|
|
}
|
|
|
|
static int do_hwtid_rpl(struct t3cdev *dev, struct sk_buff *skb)
|
|
{
|
|
union opcode_tid *p = cplhdr(skb);
|
|
unsigned int hwtid = G_TID(ntohl(p->opcode_tid));
|
|
struct t3c_tid_entry *t3c_tid;
|
|
|
|
t3c_tid = lookup_tid(&(T3C_DATA(dev))->tid_maps, hwtid);
|
|
if (t3c_tid && t3c_tid->ctx && t3c_tid->client->handlers &&
|
|
t3c_tid->client->handlers[p->opcode]) {
|
|
return t3c_tid->client->handlers[p->opcode]
|
|
(dev, skb, t3c_tid->ctx);
|
|
} else {
|
|
printk(KERN_ERR "%s: received clientless CPL command 0x%x\n",
|
|
dev->name, p->opcode);
|
|
return CPL_RET_BUF_DONE | CPL_RET_BAD_MSG;
|
|
}
|
|
}
|
|
|
|
static int do_cr(struct t3cdev *dev, struct sk_buff *skb)
|
|
{
|
|
struct cpl_pass_accept_req *req = cplhdr(skb);
|
|
unsigned int stid = G_PASS_OPEN_TID(ntohl(req->tos_tid));
|
|
struct tid_info *t = &(T3C_DATA(dev))->tid_maps;
|
|
struct t3c_tid_entry *t3c_tid;
|
|
unsigned int tid = GET_TID(req);
|
|
|
|
if (unlikely(tid >= t->ntids)) {
|
|
printk("%s: passive open TID %u too large\n",
|
|
dev->name, tid);
|
|
t3_fatal_err(tdev2adap(dev));
|
|
return CPL_RET_BUF_DONE;
|
|
}
|
|
|
|
t3c_tid = lookup_stid(t, stid);
|
|
if (t3c_tid && t3c_tid->ctx && t3c_tid->client->handlers &&
|
|
t3c_tid->client->handlers[CPL_PASS_ACCEPT_REQ]) {
|
|
return t3c_tid->client->handlers[CPL_PASS_ACCEPT_REQ]
|
|
(dev, skb, t3c_tid->ctx);
|
|
} else {
|
|
printk(KERN_ERR "%s: received clientless CPL command 0x%x\n",
|
|
dev->name, CPL_PASS_ACCEPT_REQ);
|
|
return CPL_RET_BUF_DONE | CPL_RET_BAD_MSG;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Returns an sk_buff for a reply CPL message of size len. If the input
|
|
* sk_buff has no other users it is trimmed and reused, otherwise a new buffer
|
|
* is allocated. The input skb must be of size at least len. Note that this
|
|
* operation does not destroy the original skb data even if it decides to reuse
|
|
* the buffer.
|
|
*/
|
|
static struct sk_buff *cxgb3_get_cpl_reply_skb(struct sk_buff *skb, size_t len,
|
|
gfp_t gfp)
|
|
{
|
|
if (likely(!skb_cloned(skb))) {
|
|
BUG_ON(skb->len < len);
|
|
__skb_trim(skb, len);
|
|
skb_get(skb);
|
|
} else {
|
|
skb = alloc_skb(len, gfp);
|
|
if (skb)
|
|
__skb_put(skb, len);
|
|
}
|
|
return skb;
|
|
}
|
|
|
|
static int do_abort_req_rss(struct t3cdev *dev, struct sk_buff *skb)
|
|
{
|
|
union opcode_tid *p = cplhdr(skb);
|
|
unsigned int hwtid = G_TID(ntohl(p->opcode_tid));
|
|
struct t3c_tid_entry *t3c_tid;
|
|
|
|
t3c_tid = lookup_tid(&(T3C_DATA(dev))->tid_maps, hwtid);
|
|
if (t3c_tid && t3c_tid->ctx && t3c_tid->client->handlers &&
|
|
t3c_tid->client->handlers[p->opcode]) {
|
|
return t3c_tid->client->handlers[p->opcode]
|
|
(dev, skb, t3c_tid->ctx);
|
|
} else {
|
|
struct cpl_abort_req_rss *req = cplhdr(skb);
|
|
struct cpl_abort_rpl *rpl;
|
|
struct sk_buff *reply_skb;
|
|
unsigned int tid = GET_TID(req);
|
|
u8 cmd = req->status;
|
|
|
|
if (req->status == CPL_ERR_RTX_NEG_ADVICE ||
|
|
req->status == CPL_ERR_PERSIST_NEG_ADVICE)
|
|
goto out;
|
|
|
|
reply_skb = cxgb3_get_cpl_reply_skb(skb,
|
|
sizeof(struct
|
|
cpl_abort_rpl),
|
|
GFP_ATOMIC);
|
|
|
|
if (!reply_skb) {
|
|
printk("do_abort_req_rss: couldn't get skb!\n");
|
|
goto out;
|
|
}
|
|
reply_skb->priority = CPL_PRIORITY_DATA;
|
|
__skb_put(reply_skb, sizeof(struct cpl_abort_rpl));
|
|
rpl = cplhdr(reply_skb);
|
|
rpl->wr.wr_hi =
|
|
htonl(V_WR_OP(FW_WROPCODE_OFLD_HOST_ABORT_CON_RPL));
|
|
rpl->wr.wr_lo = htonl(V_WR_TID(tid));
|
|
OPCODE_TID(rpl) = htonl(MK_OPCODE_TID(CPL_ABORT_RPL, tid));
|
|
rpl->cmd = cmd;
|
|
cxgb3_ofld_send(dev, reply_skb);
|
|
out:
|
|
return CPL_RET_BUF_DONE;
|
|
}
|
|
}
|
|
|
|
static int do_act_establish(struct t3cdev *dev, struct sk_buff *skb)
|
|
{
|
|
struct cpl_act_establish *req = cplhdr(skb);
|
|
unsigned int atid = G_PASS_OPEN_TID(ntohl(req->tos_tid));
|
|
struct tid_info *t = &(T3C_DATA(dev))->tid_maps;
|
|
struct t3c_tid_entry *t3c_tid;
|
|
unsigned int tid = GET_TID(req);
|
|
|
|
if (unlikely(tid >= t->ntids)) {
|
|
printk("%s: active establish TID %u too large\n",
|
|
dev->name, tid);
|
|
t3_fatal_err(tdev2adap(dev));
|
|
return CPL_RET_BUF_DONE;
|
|
}
|
|
|
|
t3c_tid = lookup_atid(t, atid);
|
|
if (t3c_tid && t3c_tid->ctx && t3c_tid->client->handlers &&
|
|
t3c_tid->client->handlers[CPL_ACT_ESTABLISH]) {
|
|
return t3c_tid->client->handlers[CPL_ACT_ESTABLISH]
|
|
(dev, skb, t3c_tid->ctx);
|
|
} else {
|
|
printk(KERN_ERR "%s: received clientless CPL command 0x%x\n",
|
|
dev->name, CPL_ACT_ESTABLISH);
|
|
return CPL_RET_BUF_DONE | CPL_RET_BAD_MSG;
|
|
}
|
|
}
|
|
|
|
static int do_trace(struct t3cdev *dev, struct sk_buff *skb)
|
|
{
|
|
struct cpl_trace_pkt *p = cplhdr(skb);
|
|
|
|
skb->protocol = htons(0xffff);
|
|
skb->dev = dev->lldev;
|
|
skb_pull(skb, sizeof(*p));
|
|
skb_reset_mac_header(skb);
|
|
netif_receive_skb(skb);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* That skb would better have come from process_responses() where we abuse
|
|
* ->priority and ->csum to carry our data. NB: if we get to per-arch
|
|
* ->csum, the things might get really interesting here.
|
|
*/
|
|
|
|
static inline u32 get_hwtid(struct sk_buff *skb)
|
|
{
|
|
return ntohl((__force __be32)skb->priority) >> 8 & 0xfffff;
|
|
}
|
|
|
|
static inline u32 get_opcode(struct sk_buff *skb)
|
|
{
|
|
return G_OPCODE(ntohl((__force __be32)skb->csum));
|
|
}
|
|
|
|
static int do_term(struct t3cdev *dev, struct sk_buff *skb)
|
|
{
|
|
unsigned int hwtid = get_hwtid(skb);
|
|
unsigned int opcode = get_opcode(skb);
|
|
struct t3c_tid_entry *t3c_tid;
|
|
|
|
t3c_tid = lookup_tid(&(T3C_DATA(dev))->tid_maps, hwtid);
|
|
if (t3c_tid && t3c_tid->ctx && t3c_tid->client->handlers &&
|
|
t3c_tid->client->handlers[opcode]) {
|
|
return t3c_tid->client->handlers[opcode] (dev, skb,
|
|
t3c_tid->ctx);
|
|
} else {
|
|
printk(KERN_ERR "%s: received clientless CPL command 0x%x\n",
|
|
dev->name, opcode);
|
|
return CPL_RET_BUF_DONE | CPL_RET_BAD_MSG;
|
|
}
|
|
}
|
|
|
|
static int nb_callback(struct notifier_block *self, unsigned long event,
|
|
void *ctx)
|
|
{
|
|
switch (event) {
|
|
case (NETEVENT_NEIGH_UPDATE):{
|
|
cxgb_neigh_update((struct neighbour *)ctx);
|
|
break;
|
|
}
|
|
case (NETEVENT_PMTU_UPDATE):
|
|
break;
|
|
case (NETEVENT_REDIRECT):{
|
|
struct netevent_redirect *nr = ctx;
|
|
cxgb_redirect(nr->old, nr->new);
|
|
cxgb_neigh_update(nr->new->neighbour);
|
|
break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static struct notifier_block nb = {
|
|
.notifier_call = nb_callback
|
|
};
|
|
|
|
/*
|
|
* Process a received packet with an unknown/unexpected CPL opcode.
|
|
*/
|
|
static int do_bad_cpl(struct t3cdev *dev, struct sk_buff *skb)
|
|
{
|
|
printk(KERN_ERR "%s: received bad CPL command 0x%x\n", dev->name,
|
|
*skb->data);
|
|
return CPL_RET_BUF_DONE | CPL_RET_BAD_MSG;
|
|
}
|
|
|
|
/*
|
|
* Handlers for each CPL opcode
|
|
*/
|
|
static cpl_handler_func cpl_handlers[NUM_CPL_CMDS];
|
|
|
|
/*
|
|
* Add a new handler to the CPL dispatch table. A NULL handler may be supplied
|
|
* to unregister an existing handler.
|
|
*/
|
|
void t3_register_cpl_handler(unsigned int opcode, cpl_handler_func h)
|
|
{
|
|
if (opcode < NUM_CPL_CMDS)
|
|
cpl_handlers[opcode] = h ? h : do_bad_cpl;
|
|
else
|
|
printk(KERN_ERR "T3C: handler registration for "
|
|
"opcode %x failed\n", opcode);
|
|
}
|
|
|
|
EXPORT_SYMBOL(t3_register_cpl_handler);
|
|
|
|
/*
|
|
* T3CDEV's receive method.
|
|
*/
|
|
int process_rx(struct t3cdev *dev, struct sk_buff **skbs, int n)
|
|
{
|
|
while (n--) {
|
|
struct sk_buff *skb = *skbs++;
|
|
unsigned int opcode = get_opcode(skb);
|
|
int ret = cpl_handlers[opcode] (dev, skb);
|
|
|
|
#if VALIDATE_TID
|
|
if (ret & CPL_RET_UNKNOWN_TID) {
|
|
union opcode_tid *p = cplhdr(skb);
|
|
|
|
printk(KERN_ERR "%s: CPL message (opcode %u) had "
|
|
"unknown TID %u\n", dev->name, opcode,
|
|
G_TID(ntohl(p->opcode_tid)));
|
|
}
|
|
#endif
|
|
if (ret & CPL_RET_BUF_DONE)
|
|
kfree_skb(skb);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Sends an sk_buff to a T3C driver after dealing with any active network taps.
|
|
*/
|
|
int cxgb3_ofld_send(struct t3cdev *dev, struct sk_buff *skb)
|
|
{
|
|
int r;
|
|
|
|
local_bh_disable();
|
|
r = dev->send(dev, skb);
|
|
local_bh_enable();
|
|
return r;
|
|
}
|
|
|
|
EXPORT_SYMBOL(cxgb3_ofld_send);
|
|
|
|
static int is_offloading(struct net_device *dev)
|
|
{
|
|
struct adapter *adapter;
|
|
int i;
|
|
|
|
read_lock_bh(&adapter_list_lock);
|
|
list_for_each_entry(adapter, &adapter_list, adapter_list) {
|
|
for_each_port(adapter, i) {
|
|
if (dev == adapter->port[i]) {
|
|
read_unlock_bh(&adapter_list_lock);
|
|
return 1;
|
|
}
|
|
}
|
|
}
|
|
read_unlock_bh(&adapter_list_lock);
|
|
return 0;
|
|
}
|
|
|
|
void cxgb_neigh_update(struct neighbour *neigh)
|
|
{
|
|
struct net_device *dev = neigh->dev;
|
|
|
|
if (dev && (is_offloading(dev))) {
|
|
struct t3cdev *tdev = dev2t3cdev(dev);
|
|
|
|
BUG_ON(!tdev);
|
|
t3_l2t_update(tdev, neigh);
|
|
}
|
|
}
|
|
|
|
static void set_l2t_ix(struct t3cdev *tdev, u32 tid, struct l2t_entry *e)
|
|
{
|
|
struct sk_buff *skb;
|
|
struct cpl_set_tcb_field *req;
|
|
|
|
skb = alloc_skb(sizeof(*req), GFP_ATOMIC);
|
|
if (!skb) {
|
|
printk(KERN_ERR "%s: cannot allocate skb!\n", __func__);
|
|
return;
|
|
}
|
|
skb->priority = CPL_PRIORITY_CONTROL;
|
|
req = (struct cpl_set_tcb_field *)skb_put(skb, sizeof(*req));
|
|
req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD));
|
|
OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_SET_TCB_FIELD, tid));
|
|
req->reply = 0;
|
|
req->cpu_idx = 0;
|
|
req->word = htons(W_TCB_L2T_IX);
|
|
req->mask = cpu_to_be64(V_TCB_L2T_IX(M_TCB_L2T_IX));
|
|
req->val = cpu_to_be64(V_TCB_L2T_IX(e->idx));
|
|
tdev->send(tdev, skb);
|
|
}
|
|
|
|
void cxgb_redirect(struct dst_entry *old, struct dst_entry *new)
|
|
{
|
|
struct net_device *olddev, *newdev;
|
|
struct tid_info *ti;
|
|
struct t3cdev *tdev;
|
|
u32 tid;
|
|
int update_tcb;
|
|
struct l2t_entry *e;
|
|
struct t3c_tid_entry *te;
|
|
|
|
olddev = old->neighbour->dev;
|
|
newdev = new->neighbour->dev;
|
|
if (!is_offloading(olddev))
|
|
return;
|
|
if (!is_offloading(newdev)) {
|
|
printk(KERN_WARNING "%s: Redirect to non-offload "
|
|
"device ignored.\n", __func__);
|
|
return;
|
|
}
|
|
tdev = dev2t3cdev(olddev);
|
|
BUG_ON(!tdev);
|
|
if (tdev != dev2t3cdev(newdev)) {
|
|
printk(KERN_WARNING "%s: Redirect to different "
|
|
"offload device ignored.\n", __func__);
|
|
return;
|
|
}
|
|
|
|
/* Add new L2T entry */
|
|
e = t3_l2t_get(tdev, new->neighbour, newdev);
|
|
if (!e) {
|
|
printk(KERN_ERR "%s: couldn't allocate new l2t entry!\n",
|
|
__func__);
|
|
return;
|
|
}
|
|
|
|
/* Walk tid table and notify clients of dst change. */
|
|
ti = &(T3C_DATA(tdev))->tid_maps;
|
|
for (tid = 0; tid < ti->ntids; tid++) {
|
|
te = lookup_tid(ti, tid);
|
|
BUG_ON(!te);
|
|
if (te && te->ctx && te->client && te->client->redirect) {
|
|
update_tcb = te->client->redirect(te->ctx, old, new, e);
|
|
if (update_tcb) {
|
|
l2t_hold(L2DATA(tdev), e);
|
|
set_l2t_ix(tdev, tid, e);
|
|
}
|
|
}
|
|
}
|
|
l2t_release(L2DATA(tdev), e);
|
|
}
|
|
|
|
/*
|
|
* Allocate a chunk of memory using kmalloc or, if that fails, vmalloc.
|
|
* The allocated memory is cleared.
|
|
*/
|
|
void *cxgb_alloc_mem(unsigned long size)
|
|
{
|
|
void *p = kmalloc(size, GFP_KERNEL);
|
|
|
|
if (!p)
|
|
p = vmalloc(size);
|
|
if (p)
|
|
memset(p, 0, size);
|
|
return p;
|
|
}
|
|
|
|
/*
|
|
* Free memory allocated through t3_alloc_mem().
|
|
*/
|
|
void cxgb_free_mem(void *addr)
|
|
{
|
|
if (is_vmalloc_addr(addr))
|
|
vfree(addr);
|
|
else
|
|
kfree(addr);
|
|
}
|
|
|
|
/*
|
|
* Allocate and initialize the TID tables. Returns 0 on success.
|
|
*/
|
|
static int init_tid_tabs(struct tid_info *t, unsigned int ntids,
|
|
unsigned int natids, unsigned int nstids,
|
|
unsigned int atid_base, unsigned int stid_base)
|
|
{
|
|
unsigned long size = ntids * sizeof(*t->tid_tab) +
|
|
natids * sizeof(*t->atid_tab) + nstids * sizeof(*t->stid_tab);
|
|
|
|
t->tid_tab = cxgb_alloc_mem(size);
|
|
if (!t->tid_tab)
|
|
return -ENOMEM;
|
|
|
|
t->stid_tab = (union listen_entry *)&t->tid_tab[ntids];
|
|
t->atid_tab = (union active_open_entry *)&t->stid_tab[nstids];
|
|
t->ntids = ntids;
|
|
t->nstids = nstids;
|
|
t->stid_base = stid_base;
|
|
t->sfree = NULL;
|
|
t->natids = natids;
|
|
t->atid_base = atid_base;
|
|
t->afree = NULL;
|
|
t->stids_in_use = t->atids_in_use = 0;
|
|
atomic_set(&t->tids_in_use, 0);
|
|
spin_lock_init(&t->stid_lock);
|
|
spin_lock_init(&t->atid_lock);
|
|
|
|
/*
|
|
* Setup the free lists for stid_tab and atid_tab.
|
|
*/
|
|
if (nstids) {
|
|
while (--nstids)
|
|
t->stid_tab[nstids - 1].next = &t->stid_tab[nstids];
|
|
t->sfree = t->stid_tab;
|
|
}
|
|
if (natids) {
|
|
while (--natids)
|
|
t->atid_tab[natids - 1].next = &t->atid_tab[natids];
|
|
t->afree = t->atid_tab;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void free_tid_maps(struct tid_info *t)
|
|
{
|
|
cxgb_free_mem(t->tid_tab);
|
|
}
|
|
|
|
static inline void add_adapter(struct adapter *adap)
|
|
{
|
|
write_lock_bh(&adapter_list_lock);
|
|
list_add_tail(&adap->adapter_list, &adapter_list);
|
|
write_unlock_bh(&adapter_list_lock);
|
|
}
|
|
|
|
static inline void remove_adapter(struct adapter *adap)
|
|
{
|
|
write_lock_bh(&adapter_list_lock);
|
|
list_del(&adap->adapter_list);
|
|
write_unlock_bh(&adapter_list_lock);
|
|
}
|
|
|
|
int cxgb3_offload_activate(struct adapter *adapter)
|
|
{
|
|
struct t3cdev *dev = &adapter->tdev;
|
|
int natids, err;
|
|
struct t3c_data *t;
|
|
struct tid_range stid_range, tid_range;
|
|
struct mtutab mtutab;
|
|
unsigned int l2t_capacity;
|
|
|
|
t = kcalloc(1, sizeof(*t), GFP_KERNEL);
|
|
if (!t)
|
|
return -ENOMEM;
|
|
|
|
err = -EOPNOTSUPP;
|
|
if (dev->ctl(dev, GET_TX_MAX_CHUNK, &t->tx_max_chunk) < 0 ||
|
|
dev->ctl(dev, GET_MAX_OUTSTANDING_WR, &t->max_wrs) < 0 ||
|
|
dev->ctl(dev, GET_L2T_CAPACITY, &l2t_capacity) < 0 ||
|
|
dev->ctl(dev, GET_MTUS, &mtutab) < 0 ||
|
|
dev->ctl(dev, GET_TID_RANGE, &tid_range) < 0 ||
|
|
dev->ctl(dev, GET_STID_RANGE, &stid_range) < 0)
|
|
goto out_free;
|
|
|
|
err = -ENOMEM;
|
|
L2DATA(dev) = t3_init_l2t(l2t_capacity);
|
|
if (!L2DATA(dev))
|
|
goto out_free;
|
|
|
|
natids = min(tid_range.num / 2, MAX_ATIDS);
|
|
err = init_tid_tabs(&t->tid_maps, tid_range.num, natids,
|
|
stid_range.num, ATID_BASE, stid_range.base);
|
|
if (err)
|
|
goto out_free_l2t;
|
|
|
|
t->mtus = mtutab.mtus;
|
|
t->nmtus = mtutab.size;
|
|
|
|
INIT_WORK(&t->tid_release_task, t3_process_tid_release_list);
|
|
spin_lock_init(&t->tid_release_lock);
|
|
INIT_LIST_HEAD(&t->list_node);
|
|
t->dev = dev;
|
|
|
|
T3C_DATA(dev) = t;
|
|
dev->recv = process_rx;
|
|
dev->neigh_update = t3_l2t_update;
|
|
|
|
/* Register netevent handler once */
|
|
if (list_empty(&adapter_list))
|
|
register_netevent_notifier(&nb);
|
|
|
|
t->nofail_skb = alloc_skb(sizeof(struct cpl_tid_release), GFP_KERNEL);
|
|
t->release_list_incomplete = 0;
|
|
|
|
add_adapter(adapter);
|
|
return 0;
|
|
|
|
out_free_l2t:
|
|
t3_free_l2t(L2DATA(dev));
|
|
L2DATA(dev) = NULL;
|
|
out_free:
|
|
kfree(t);
|
|
return err;
|
|
}
|
|
|
|
void cxgb3_offload_deactivate(struct adapter *adapter)
|
|
{
|
|
struct t3cdev *tdev = &adapter->tdev;
|
|
struct t3c_data *t = T3C_DATA(tdev);
|
|
|
|
remove_adapter(adapter);
|
|
if (list_empty(&adapter_list))
|
|
unregister_netevent_notifier(&nb);
|
|
|
|
free_tid_maps(&t->tid_maps);
|
|
T3C_DATA(tdev) = NULL;
|
|
t3_free_l2t(L2DATA(tdev));
|
|
L2DATA(tdev) = NULL;
|
|
if (t->nofail_skb)
|
|
kfree_skb(t->nofail_skb);
|
|
kfree(t);
|
|
}
|
|
|
|
static inline void register_tdev(struct t3cdev *tdev)
|
|
{
|
|
static int unit;
|
|
|
|
mutex_lock(&cxgb3_db_lock);
|
|
snprintf(tdev->name, sizeof(tdev->name), "ofld_dev%d", unit++);
|
|
list_add_tail(&tdev->ofld_dev_list, &ofld_dev_list);
|
|
mutex_unlock(&cxgb3_db_lock);
|
|
}
|
|
|
|
static inline void unregister_tdev(struct t3cdev *tdev)
|
|
{
|
|
mutex_lock(&cxgb3_db_lock);
|
|
list_del(&tdev->ofld_dev_list);
|
|
mutex_unlock(&cxgb3_db_lock);
|
|
}
|
|
|
|
static inline int adap2type(struct adapter *adapter)
|
|
{
|
|
int type = 0;
|
|
|
|
switch (adapter->params.rev) {
|
|
case T3_REV_A:
|
|
type = T3A;
|
|
break;
|
|
case T3_REV_B:
|
|
case T3_REV_B2:
|
|
type = T3B;
|
|
break;
|
|
case T3_REV_C:
|
|
type = T3C;
|
|
break;
|
|
}
|
|
return type;
|
|
}
|
|
|
|
void __devinit cxgb3_adapter_ofld(struct adapter *adapter)
|
|
{
|
|
struct t3cdev *tdev = &adapter->tdev;
|
|
|
|
INIT_LIST_HEAD(&tdev->ofld_dev_list);
|
|
|
|
cxgb3_set_dummy_ops(tdev);
|
|
tdev->send = t3_offload_tx;
|
|
tdev->ctl = cxgb_offload_ctl;
|
|
tdev->type = adap2type(adapter);
|
|
|
|
register_tdev(tdev);
|
|
}
|
|
|
|
void __devexit cxgb3_adapter_unofld(struct adapter *adapter)
|
|
{
|
|
struct t3cdev *tdev = &adapter->tdev;
|
|
|
|
tdev->recv = NULL;
|
|
tdev->neigh_update = NULL;
|
|
|
|
unregister_tdev(tdev);
|
|
}
|
|
|
|
void __init cxgb3_offload_init(void)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < NUM_CPL_CMDS; ++i)
|
|
cpl_handlers[i] = do_bad_cpl;
|
|
|
|
t3_register_cpl_handler(CPL_SMT_WRITE_RPL, do_smt_write_rpl);
|
|
t3_register_cpl_handler(CPL_L2T_WRITE_RPL, do_l2t_write_rpl);
|
|
t3_register_cpl_handler(CPL_RTE_WRITE_RPL, do_rte_write_rpl);
|
|
t3_register_cpl_handler(CPL_PASS_OPEN_RPL, do_stid_rpl);
|
|
t3_register_cpl_handler(CPL_CLOSE_LISTSRV_RPL, do_stid_rpl);
|
|
t3_register_cpl_handler(CPL_PASS_ACCEPT_REQ, do_cr);
|
|
t3_register_cpl_handler(CPL_PASS_ESTABLISH, do_hwtid_rpl);
|
|
t3_register_cpl_handler(CPL_ABORT_RPL_RSS, do_hwtid_rpl);
|
|
t3_register_cpl_handler(CPL_ABORT_RPL, do_hwtid_rpl);
|
|
t3_register_cpl_handler(CPL_RX_URG_NOTIFY, do_hwtid_rpl);
|
|
t3_register_cpl_handler(CPL_RX_DATA, do_hwtid_rpl);
|
|
t3_register_cpl_handler(CPL_TX_DATA_ACK, do_hwtid_rpl);
|
|
t3_register_cpl_handler(CPL_TX_DMA_ACK, do_hwtid_rpl);
|
|
t3_register_cpl_handler(CPL_ACT_OPEN_RPL, do_act_open_rpl);
|
|
t3_register_cpl_handler(CPL_PEER_CLOSE, do_hwtid_rpl);
|
|
t3_register_cpl_handler(CPL_CLOSE_CON_RPL, do_hwtid_rpl);
|
|
t3_register_cpl_handler(CPL_ABORT_REQ_RSS, do_abort_req_rss);
|
|
t3_register_cpl_handler(CPL_ACT_ESTABLISH, do_act_establish);
|
|
t3_register_cpl_handler(CPL_SET_TCB_RPL, do_hwtid_rpl);
|
|
t3_register_cpl_handler(CPL_GET_TCB_RPL, do_hwtid_rpl);
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t3_register_cpl_handler(CPL_RDMA_TERMINATE, do_term);
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t3_register_cpl_handler(CPL_RDMA_EC_STATUS, do_hwtid_rpl);
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t3_register_cpl_handler(CPL_TRACE_PKT, do_trace);
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t3_register_cpl_handler(CPL_RX_DATA_DDP, do_hwtid_rpl);
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t3_register_cpl_handler(CPL_RX_DDP_COMPLETE, do_hwtid_rpl);
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t3_register_cpl_handler(CPL_ISCSI_HDR, do_hwtid_rpl);
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}
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