2012-02-20 14:11:37 -07:00
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/* -----------------------------------------------------------------------------
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* Copyright (c) 2011 Ozmo Inc
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* Released under the GNU General Public License Version 2 (GPLv2).
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* -----------------------------------------------------------------------------
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*/
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/timer.h>
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#include <linux/sched.h>
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#include <linux/netdevice.h>
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#include <linux/errno.h>
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#include "ozconfig.h"
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#include "ozprotocol.h"
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#include "ozeltbuf.h"
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#include "ozpd.h"
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#include "ozproto.h"
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#include "oztrace.h"
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#include "ozevent.h"
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#include "ozcdev.h"
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#include "ozusbsvc.h"
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#include <asm/unaligned.h>
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#include <linux/uaccess.h>
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#include <net/psnap.h>
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/*------------------------------------------------------------------------------
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*/
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#define OZ_MAX_TX_POOL_SIZE 6
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/*------------------------------------------------------------------------------
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*/
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static struct oz_tx_frame *oz_tx_frame_alloc(struct oz_pd *pd);
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static void oz_tx_frame_free(struct oz_pd *pd, struct oz_tx_frame *f);
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2012-06-20 06:36:06 -06:00
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static void oz_tx_isoc_free(struct oz_pd *pd, struct oz_tx_frame *f);
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2012-02-20 14:11:37 -07:00
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static struct sk_buff *oz_build_frame(struct oz_pd *pd, struct oz_tx_frame *f);
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static int oz_send_isoc_frame(struct oz_pd *pd);
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static void oz_retire_frame(struct oz_pd *pd, struct oz_tx_frame *f);
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static void oz_isoc_stream_free(struct oz_isoc_stream *st);
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2012-06-20 06:36:06 -06:00
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static int oz_send_next_queued_frame(struct oz_pd *pd, int more_data);
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2012-02-20 14:11:37 -07:00
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static void oz_isoc_destructor(struct sk_buff *skb);
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static int oz_def_app_init(void);
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static void oz_def_app_term(void);
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static int oz_def_app_start(struct oz_pd *pd, int resume);
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static void oz_def_app_stop(struct oz_pd *pd, int pause);
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static void oz_def_app_rx(struct oz_pd *pd, struct oz_elt *elt);
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/*------------------------------------------------------------------------------
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* Counts the uncompleted isoc frames submitted to netcard.
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*/
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static atomic_t g_submitted_isoc = ATOMIC_INIT(0);
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/* Application handler functions.
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*/
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2013-02-15 13:17:24 -07:00
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static const struct oz_app_if g_app_if[OZ_APPID_MAX] = {
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2012-02-20 14:11:37 -07:00
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{oz_usb_init,
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oz_usb_term,
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oz_usb_start,
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oz_usb_stop,
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oz_usb_rx,
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oz_usb_heartbeat,
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oz_usb_farewell,
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OZ_APPID_USB},
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{oz_def_app_init,
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oz_def_app_term,
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oz_def_app_start,
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oz_def_app_stop,
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oz_def_app_rx,
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2013-02-15 07:22:22 -07:00
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NULL,
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NULL,
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2012-02-20 14:11:37 -07:00
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OZ_APPID_UNUSED1},
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{oz_def_app_init,
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oz_def_app_term,
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oz_def_app_start,
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oz_def_app_stop,
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oz_def_app_rx,
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2013-02-15 07:22:22 -07:00
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NULL,
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NULL,
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2012-02-20 14:11:37 -07:00
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OZ_APPID_UNUSED2},
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{oz_cdev_init,
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oz_cdev_term,
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oz_cdev_start,
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oz_cdev_stop,
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oz_cdev_rx,
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2013-02-15 07:22:22 -07:00
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NULL,
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NULL,
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2012-02-20 14:11:37 -07:00
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OZ_APPID_SERIAL},
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};
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/*------------------------------------------------------------------------------
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* Context: process
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*/
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static int oz_def_app_init(void)
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{
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return 0;
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}
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/*------------------------------------------------------------------------------
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* Context: process
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*/
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static void oz_def_app_term(void)
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{
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}
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/*------------------------------------------------------------------------------
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* Context: softirq
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*/
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static int oz_def_app_start(struct oz_pd *pd, int resume)
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{
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return 0;
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}
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/*------------------------------------------------------------------------------
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* Context: softirq
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*/
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static void oz_def_app_stop(struct oz_pd *pd, int pause)
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{
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}
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/*------------------------------------------------------------------------------
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* Context: softirq
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*/
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static void oz_def_app_rx(struct oz_pd *pd, struct oz_elt *elt)
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{
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}
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/*------------------------------------------------------------------------------
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* Context: softirq or process
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*/
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void oz_pd_set_state(struct oz_pd *pd, unsigned state)
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{
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pd->state = state;
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2013-02-15 07:22:22 -07:00
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oz_event_log(OZ_EVT_PD_STATE, 0, 0, NULL, state);
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2012-02-20 14:11:37 -07:00
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#ifdef WANT_TRACE
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switch (state) {
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case OZ_PD_S_IDLE:
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oz_trace("PD State: OZ_PD_S_IDLE\n");
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break;
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case OZ_PD_S_CONNECTED:
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oz_trace("PD State: OZ_PD_S_CONNECTED\n");
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break;
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case OZ_PD_S_STOPPED:
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oz_trace("PD State: OZ_PD_S_STOPPED\n");
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break;
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case OZ_PD_S_SLEEP:
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oz_trace("PD State: OZ_PD_S_SLEEP\n");
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break;
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}
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#endif /* WANT_TRACE */
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}
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/*------------------------------------------------------------------------------
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* Context: softirq or process
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*/
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void oz_pd_get(struct oz_pd *pd)
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{
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atomic_inc(&pd->ref_count);
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}
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/*------------------------------------------------------------------------------
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* Context: softirq or process
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*/
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void oz_pd_put(struct oz_pd *pd)
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{
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if (atomic_dec_and_test(&pd->ref_count))
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oz_pd_destroy(pd);
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}
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/*------------------------------------------------------------------------------
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* Context: softirq-serialized
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*/
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2013-02-15 13:17:24 -07:00
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struct oz_pd *oz_pd_alloc(const u8 *mac_addr)
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2012-02-20 14:11:37 -07:00
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{
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2012-03-02 17:51:09 -07:00
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struct oz_pd *pd = kzalloc(sizeof(struct oz_pd), GFP_ATOMIC);
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2012-02-20 14:11:37 -07:00
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if (pd) {
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int i;
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atomic_set(&pd->ref_count, 2);
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for (i = 0; i < OZ_APPID_MAX; i++)
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spin_lock_init(&pd->app_lock[i]);
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pd->last_rx_pkt_num = 0xffffffff;
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oz_pd_set_state(pd, OZ_PD_S_IDLE);
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pd->max_tx_size = OZ_MAX_TX_SIZE;
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memcpy(pd->mac_addr, mac_addr, ETH_ALEN);
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if (0 != oz_elt_buf_init(&pd->elt_buff)) {
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2012-03-02 17:51:09 -07:00
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kfree(pd);
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2013-02-15 07:22:22 -07:00
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pd = NULL;
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2012-02-20 14:11:37 -07:00
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}
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spin_lock_init(&pd->tx_frame_lock);
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INIT_LIST_HEAD(&pd->tx_queue);
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INIT_LIST_HEAD(&pd->farewell_list);
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pd->last_sent_frame = &pd->tx_queue;
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spin_lock_init(&pd->stream_lock);
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INIT_LIST_HEAD(&pd->stream_list);
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}
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return pd;
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}
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/*------------------------------------------------------------------------------
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* Context: softirq or process
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*/
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void oz_pd_destroy(struct oz_pd *pd)
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{
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struct list_head *e;
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struct oz_tx_frame *f;
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struct oz_isoc_stream *st;
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struct oz_farewell *fwell;
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oz_trace("Destroying PD\n");
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/* Delete any streams.
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*/
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e = pd->stream_list.next;
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while (e != &pd->stream_list) {
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st = container_of(e, struct oz_isoc_stream, link);
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e = e->next;
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oz_isoc_stream_free(st);
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}
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/* Free any queued tx frames.
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*/
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e = pd->tx_queue.next;
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while (e != &pd->tx_queue) {
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f = container_of(e, struct oz_tx_frame, link);
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e = e->next;
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2012-06-20 06:36:06 -06:00
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if (f->skb != NULL)
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kfree_skb(f->skb);
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2012-02-20 14:11:37 -07:00
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oz_retire_frame(pd, f);
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}
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oz_elt_buf_term(&pd->elt_buff);
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/* Free any farewells.
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*/
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e = pd->farewell_list.next;
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while (e != &pd->farewell_list) {
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fwell = container_of(e, struct oz_farewell, link);
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e = e->next;
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2012-03-02 17:51:09 -07:00
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kfree(fwell);
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2012-02-20 14:11:37 -07:00
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}
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/* Deallocate all frames in tx pool.
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*/
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while (pd->tx_pool) {
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e = pd->tx_pool;
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pd->tx_pool = e->next;
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2012-03-02 17:51:09 -07:00
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kfree(container_of(e, struct oz_tx_frame, link));
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2012-02-20 14:11:37 -07:00
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}
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if (pd->net_dev)
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dev_put(pd->net_dev);
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2012-03-02 17:51:09 -07:00
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kfree(pd);
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2012-02-20 14:11:37 -07:00
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}
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/*------------------------------------------------------------------------------
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* Context: softirq-serialized
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*/
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int oz_services_start(struct oz_pd *pd, u16 apps, int resume)
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{
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2013-02-15 13:17:24 -07:00
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const struct oz_app_if *ai;
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2012-02-20 14:11:37 -07:00
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int rc = 0;
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oz_trace("oz_services_start(0x%x) resume(%d)\n", apps, resume);
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for (ai = g_app_if; ai < &g_app_if[OZ_APPID_MAX]; ai++) {
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if (apps & (1<<ai->app_id)) {
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if (ai->start(pd, resume)) {
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rc = -1;
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oz_trace("Unabled to start service %d\n",
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ai->app_id);
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break;
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}
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oz_polling_lock_bh();
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pd->total_apps |= (1<<ai->app_id);
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if (resume)
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pd->paused_apps &= ~(1<<ai->app_id);
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oz_polling_unlock_bh();
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}
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}
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return rc;
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}
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/*------------------------------------------------------------------------------
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* Context: softirq or process
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*/
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void oz_services_stop(struct oz_pd *pd, u16 apps, int pause)
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{
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2013-02-15 13:17:24 -07:00
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const struct oz_app_if *ai;
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2012-02-20 14:11:37 -07:00
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oz_trace("oz_stop_services(0x%x) pause(%d)\n", apps, pause);
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for (ai = g_app_if; ai < &g_app_if[OZ_APPID_MAX]; ai++) {
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if (apps & (1<<ai->app_id)) {
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oz_polling_lock_bh();
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if (pause) {
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pd->paused_apps |= (1<<ai->app_id);
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} else {
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pd->total_apps &= ~(1<<ai->app_id);
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pd->paused_apps &= ~(1<<ai->app_id);
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}
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oz_polling_unlock_bh();
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ai->stop(pd, pause);
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}
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}
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}
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/*------------------------------------------------------------------------------
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* Context: softirq
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*/
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void oz_pd_heartbeat(struct oz_pd *pd, u16 apps)
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{
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2013-02-15 13:17:24 -07:00
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const struct oz_app_if *ai;
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2012-02-20 14:11:37 -07:00
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int more = 0;
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for (ai = g_app_if; ai < &g_app_if[OZ_APPID_MAX]; ai++) {
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if (ai->heartbeat && (apps & (1<<ai->app_id))) {
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if (ai->heartbeat(pd))
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more = 1;
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}
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}
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if (more)
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oz_pd_request_heartbeat(pd);
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if (pd->mode & OZ_F_ISOC_ANYTIME) {
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int count = 8;
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while (count-- && (oz_send_isoc_frame(pd) >= 0))
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;
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}
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}
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/*------------------------------------------------------------------------------
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* Context: softirq or process
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*/
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void oz_pd_stop(struct oz_pd *pd)
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{
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u16 stop_apps = 0;
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oz_trace("oz_pd_stop() State = 0x%x\n", pd->state);
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oz_pd_indicate_farewells(pd);
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oz_polling_lock_bh();
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stop_apps = pd->total_apps;
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pd->total_apps = 0;
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pd->paused_apps = 0;
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oz_polling_unlock_bh();
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oz_services_stop(pd, stop_apps, 0);
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oz_polling_lock_bh();
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oz_pd_set_state(pd, OZ_PD_S_STOPPED);
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/* Remove from PD list.*/
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list_del(&pd->link);
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oz_polling_unlock_bh();
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oz_trace("pd ref count = %d\n", atomic_read(&pd->ref_count));
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oz_timer_delete(pd, 0);
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oz_pd_put(pd);
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}
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/*------------------------------------------------------------------------------
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* Context: softirq
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*/
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int oz_pd_sleep(struct oz_pd *pd)
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{
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int do_stop = 0;
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u16 stop_apps = 0;
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oz_polling_lock_bh();
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if (pd->state & (OZ_PD_S_SLEEP | OZ_PD_S_STOPPED)) {
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oz_polling_unlock_bh();
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return 0;
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}
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if (pd->keep_alive_j && pd->session_id) {
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oz_pd_set_state(pd, OZ_PD_S_SLEEP);
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pd->pulse_time_j = jiffies + pd->keep_alive_j;
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oz_trace("Sleep Now %lu until %lu\n",
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|
|
jiffies, pd->pulse_time_j);
|
|
|
|
} else {
|
|
|
|
do_stop = 1;
|
|
|
|
}
|
|
|
|
stop_apps = pd->total_apps;
|
|
|
|
oz_polling_unlock_bh();
|
|
|
|
if (do_stop) {
|
|
|
|
oz_pd_stop(pd);
|
|
|
|
} else {
|
|
|
|
oz_services_stop(pd, stop_apps, 1);
|
|
|
|
oz_timer_add(pd, OZ_TIMER_STOP, jiffies + pd->keep_alive_j, 1);
|
|
|
|
}
|
|
|
|
return do_stop;
|
|
|
|
}
|
|
|
|
/*------------------------------------------------------------------------------
|
|
|
|
* Context: softirq
|
|
|
|
*/
|
|
|
|
static struct oz_tx_frame *oz_tx_frame_alloc(struct oz_pd *pd)
|
|
|
|
{
|
2013-02-15 07:22:22 -07:00
|
|
|
struct oz_tx_frame *f = NULL;
|
2012-02-20 14:11:37 -07:00
|
|
|
spin_lock_bh(&pd->tx_frame_lock);
|
|
|
|
if (pd->tx_pool) {
|
|
|
|
f = container_of(pd->tx_pool, struct oz_tx_frame, link);
|
|
|
|
pd->tx_pool = pd->tx_pool->next;
|
|
|
|
pd->tx_pool_count--;
|
|
|
|
}
|
|
|
|
spin_unlock_bh(&pd->tx_frame_lock);
|
2013-02-15 07:22:22 -07:00
|
|
|
if (f == NULL)
|
2012-03-02 17:51:09 -07:00
|
|
|
f = kmalloc(sizeof(struct oz_tx_frame), GFP_ATOMIC);
|
2012-02-20 14:11:37 -07:00
|
|
|
if (f) {
|
|
|
|
f->total_size = sizeof(struct oz_hdr);
|
|
|
|
INIT_LIST_HEAD(&f->link);
|
|
|
|
INIT_LIST_HEAD(&f->elt_list);
|
|
|
|
}
|
|
|
|
return f;
|
|
|
|
}
|
2012-06-20 06:36:06 -06:00
|
|
|
/*------------------------------------------------------------------------------
|
|
|
|
* Context: softirq or process
|
|
|
|
*/
|
|
|
|
static void oz_tx_isoc_free(struct oz_pd *pd, struct oz_tx_frame *f)
|
|
|
|
{
|
|
|
|
pd->nb_queued_isoc_frames--;
|
|
|
|
list_del_init(&f->link);
|
|
|
|
if (pd->tx_pool_count < OZ_MAX_TX_POOL_SIZE) {
|
|
|
|
f->link.next = pd->tx_pool;
|
|
|
|
pd->tx_pool = &f->link;
|
|
|
|
pd->tx_pool_count++;
|
|
|
|
} else {
|
|
|
|
kfree(f);
|
|
|
|
}
|
|
|
|
oz_trace2(OZ_TRACE_TX_FRAMES, "Releasing ISOC Frame isoc_nb= %d\n",
|
|
|
|
pd->nb_queued_isoc_frames);
|
|
|
|
}
|
2012-02-20 14:11:37 -07:00
|
|
|
/*------------------------------------------------------------------------------
|
|
|
|
* Context: softirq or process
|
|
|
|
*/
|
|
|
|
static void oz_tx_frame_free(struct oz_pd *pd, struct oz_tx_frame *f)
|
|
|
|
{
|
|
|
|
spin_lock_bh(&pd->tx_frame_lock);
|
|
|
|
if (pd->tx_pool_count < OZ_MAX_TX_POOL_SIZE) {
|
|
|
|
f->link.next = pd->tx_pool;
|
|
|
|
pd->tx_pool = &f->link;
|
|
|
|
pd->tx_pool_count++;
|
2013-02-15 07:22:22 -07:00
|
|
|
f = NULL;
|
2012-02-20 14:11:37 -07:00
|
|
|
}
|
|
|
|
spin_unlock_bh(&pd->tx_frame_lock);
|
2012-11-20 04:40:08 -07:00
|
|
|
kfree(f);
|
2012-02-20 14:11:37 -07:00
|
|
|
}
|
2012-06-20 06:36:06 -06:00
|
|
|
/*------------------------------------------------------------------------------
|
|
|
|
* Context: softirq-serialized
|
|
|
|
*/
|
2013-02-15 13:17:22 -07:00
|
|
|
static void oz_set_more_bit(struct sk_buff *skb)
|
2012-06-20 06:36:06 -06:00
|
|
|
{
|
|
|
|
struct oz_hdr *oz_hdr = (struct oz_hdr *)skb_network_header(skb);
|
|
|
|
oz_hdr->control |= OZ_F_MORE_DATA;
|
|
|
|
}
|
2012-06-20 06:36:09 -06:00
|
|
|
/*------------------------------------------------------------------------------
|
|
|
|
* Context: softirq-serialized
|
|
|
|
*/
|
2013-02-15 13:17:22 -07:00
|
|
|
static void oz_set_last_pkt_nb(struct oz_pd *pd, struct sk_buff *skb)
|
2012-06-20 06:36:09 -06:00
|
|
|
{
|
|
|
|
struct oz_hdr *oz_hdr = (struct oz_hdr *)skb_network_header(skb);
|
|
|
|
oz_hdr->last_pkt_num = pd->trigger_pkt_num & OZ_LAST_PN_MASK;
|
|
|
|
}
|
2012-02-20 14:11:37 -07:00
|
|
|
/*------------------------------------------------------------------------------
|
|
|
|
* Context: softirq
|
|
|
|
*/
|
|
|
|
int oz_prepare_frame(struct oz_pd *pd, int empty)
|
|
|
|
{
|
|
|
|
struct oz_tx_frame *f;
|
|
|
|
if ((pd->mode & OZ_MODE_MASK) != OZ_MODE_TRIGGERED)
|
|
|
|
return -1;
|
|
|
|
if (pd->nb_queued_frames >= OZ_MAX_QUEUED_FRAMES)
|
|
|
|
return -1;
|
|
|
|
if (!empty && !oz_are_elts_available(&pd->elt_buff))
|
|
|
|
return -1;
|
|
|
|
f = oz_tx_frame_alloc(pd);
|
2013-02-15 07:22:22 -07:00
|
|
|
if (f == NULL)
|
2012-02-20 14:11:37 -07:00
|
|
|
return -1;
|
2012-06-20 06:36:06 -06:00
|
|
|
f->skb = NULL;
|
2012-02-20 14:11:37 -07:00
|
|
|
f->hdr.control =
|
|
|
|
(OZ_PROTOCOL_VERSION<<OZ_VERSION_SHIFT) | OZ_F_ACK_REQUESTED;
|
|
|
|
++pd->last_tx_pkt_num;
|
|
|
|
put_unaligned(cpu_to_le32(pd->last_tx_pkt_num), &f->hdr.pkt_num);
|
|
|
|
if (empty == 0) {
|
|
|
|
oz_select_elts_for_tx(&pd->elt_buff, 0, &f->total_size,
|
|
|
|
pd->max_tx_size, &f->elt_list);
|
|
|
|
}
|
|
|
|
spin_lock(&pd->tx_frame_lock);
|
|
|
|
list_add_tail(&f->link, &pd->tx_queue);
|
|
|
|
pd->nb_queued_frames++;
|
|
|
|
spin_unlock(&pd->tx_frame_lock);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
/*------------------------------------------------------------------------------
|
|
|
|
* Context: softirq-serialized
|
|
|
|
*/
|
|
|
|
static struct sk_buff *oz_build_frame(struct oz_pd *pd, struct oz_tx_frame *f)
|
|
|
|
{
|
2013-02-15 07:22:22 -07:00
|
|
|
struct sk_buff *skb;
|
2012-02-20 14:11:37 -07:00
|
|
|
struct net_device *dev = pd->net_dev;
|
|
|
|
struct oz_hdr *oz_hdr;
|
|
|
|
struct oz_elt *elt;
|
|
|
|
struct list_head *e;
|
|
|
|
/* Allocate skb with enough space for the lower layers as well
|
|
|
|
* as the space we need.
|
|
|
|
*/
|
|
|
|
skb = alloc_skb(f->total_size + OZ_ALLOCATED_SPACE(dev), GFP_ATOMIC);
|
2013-02-15 07:22:22 -07:00
|
|
|
if (skb == NULL)
|
|
|
|
return NULL;
|
2012-02-20 14:11:37 -07:00
|
|
|
/* Reserve the head room for lower layers.
|
|
|
|
*/
|
|
|
|
skb_reserve(skb, LL_RESERVED_SPACE(dev));
|
|
|
|
skb_reset_network_header(skb);
|
|
|
|
skb->dev = dev;
|
|
|
|
skb->protocol = htons(OZ_ETHERTYPE);
|
|
|
|
if (dev_hard_header(skb, dev, OZ_ETHERTYPE, pd->mac_addr,
|
|
|
|
dev->dev_addr, skb->len) < 0)
|
|
|
|
goto fail;
|
|
|
|
/* Push the tail to the end of the area we are going to copy to.
|
|
|
|
*/
|
|
|
|
oz_hdr = (struct oz_hdr *)skb_put(skb, f->total_size);
|
|
|
|
f->hdr.last_pkt_num = pd->trigger_pkt_num & OZ_LAST_PN_MASK;
|
|
|
|
memcpy(oz_hdr, &f->hdr, sizeof(struct oz_hdr));
|
|
|
|
/* Copy the elements into the frame body.
|
|
|
|
*/
|
|
|
|
elt = (struct oz_elt *)(oz_hdr+1);
|
|
|
|
for (e = f->elt_list.next; e != &f->elt_list; e = e->next) {
|
|
|
|
struct oz_elt_info *ei;
|
|
|
|
ei = container_of(e, struct oz_elt_info, link);
|
|
|
|
memcpy(elt, ei->data, ei->length);
|
|
|
|
elt = oz_next_elt(elt);
|
|
|
|
}
|
|
|
|
return skb;
|
|
|
|
fail:
|
|
|
|
kfree_skb(skb);
|
2013-02-15 07:22:22 -07:00
|
|
|
return NULL;
|
2012-02-20 14:11:37 -07:00
|
|
|
}
|
|
|
|
/*------------------------------------------------------------------------------
|
|
|
|
* Context: softirq or process
|
|
|
|
*/
|
|
|
|
static void oz_retire_frame(struct oz_pd *pd, struct oz_tx_frame *f)
|
|
|
|
{
|
|
|
|
struct list_head *e;
|
|
|
|
struct oz_elt_info *ei;
|
|
|
|
e = f->elt_list.next;
|
|
|
|
while (e != &f->elt_list) {
|
|
|
|
ei = container_of(e, struct oz_elt_info, link);
|
|
|
|
e = e->next;
|
|
|
|
list_del_init(&ei->link);
|
|
|
|
if (ei->callback)
|
|
|
|
ei->callback(pd, ei->context);
|
|
|
|
spin_lock_bh(&pd->elt_buff.lock);
|
|
|
|
oz_elt_info_free(&pd->elt_buff, ei);
|
|
|
|
spin_unlock_bh(&pd->elt_buff.lock);
|
|
|
|
}
|
|
|
|
oz_tx_frame_free(pd, f);
|
|
|
|
if (pd->elt_buff.free_elts > pd->elt_buff.max_free_elts)
|
|
|
|
oz_trim_elt_pool(&pd->elt_buff);
|
|
|
|
}
|
|
|
|
/*------------------------------------------------------------------------------
|
|
|
|
* Context: softirq-serialized
|
|
|
|
*/
|
2012-06-20 06:36:06 -06:00
|
|
|
static int oz_send_next_queued_frame(struct oz_pd *pd, int more_data)
|
2012-02-20 14:11:37 -07:00
|
|
|
{
|
|
|
|
struct sk_buff *skb;
|
|
|
|
struct oz_tx_frame *f;
|
|
|
|
struct list_head *e;
|
|
|
|
spin_lock(&pd->tx_frame_lock);
|
|
|
|
e = pd->last_sent_frame->next;
|
|
|
|
if (e == &pd->tx_queue) {
|
|
|
|
spin_unlock(&pd->tx_frame_lock);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
f = container_of(e, struct oz_tx_frame, link);
|
2012-06-20 06:36:06 -06:00
|
|
|
|
|
|
|
if (f->skb != NULL) {
|
|
|
|
skb = f->skb;
|
|
|
|
oz_tx_isoc_free(pd, f);
|
|
|
|
spin_unlock(&pd->tx_frame_lock);
|
|
|
|
if (more_data)
|
|
|
|
oz_set_more_bit(skb);
|
2012-06-20 06:36:09 -06:00
|
|
|
oz_set_last_pkt_nb(pd, skb);
|
2012-06-20 06:36:06 -06:00
|
|
|
if ((int)atomic_read(&g_submitted_isoc) <
|
|
|
|
OZ_MAX_SUBMITTED_ISOC) {
|
|
|
|
if (dev_queue_xmit(skb) < 0) {
|
|
|
|
oz_trace2(OZ_TRACE_TX_FRAMES,
|
|
|
|
"Dropping ISOC Frame\n");
|
2013-02-15 07:22:22 -07:00
|
|
|
oz_event_log(OZ_EVT_TX_ISOC_DROP, 0, 0, NULL, 0);
|
2012-06-20 06:36:06 -06:00
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
atomic_inc(&g_submitted_isoc);
|
|
|
|
oz_trace2(OZ_TRACE_TX_FRAMES,
|
|
|
|
"Sending ISOC Frame, nb_isoc= %d\n",
|
|
|
|
pd->nb_queued_isoc_frames);
|
|
|
|
return 0;
|
|
|
|
} else {
|
|
|
|
kfree_skb(skb);
|
|
|
|
oz_trace2(OZ_TRACE_TX_FRAMES, "Dropping ISOC Frame>\n");
|
2013-02-15 07:22:22 -07:00
|
|
|
oz_event_log(OZ_EVT_TX_ISOC_DROP, 0, 0, NULL, 0);
|
2012-06-20 06:36:06 -06:00
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
pd->last_sent_frame = e;
|
2012-02-20 14:11:37 -07:00
|
|
|
skb = oz_build_frame(pd, f);
|
|
|
|
spin_unlock(&pd->tx_frame_lock);
|
2012-06-20 06:36:06 -06:00
|
|
|
if (more_data)
|
|
|
|
oz_set_more_bit(skb);
|
2012-02-20 14:11:37 -07:00
|
|
|
oz_trace2(OZ_TRACE_TX_FRAMES, "TX frame PN=0x%x\n", f->hdr.pkt_num);
|
|
|
|
if (skb) {
|
|
|
|
oz_event_log(OZ_EVT_TX_FRAME,
|
|
|
|
0,
|
|
|
|
(((u16)f->hdr.control)<<8)|f->hdr.last_pkt_num,
|
2013-02-15 07:22:22 -07:00
|
|
|
NULL, f->hdr.pkt_num);
|
2012-02-20 14:11:37 -07:00
|
|
|
if (dev_queue_xmit(skb) < 0)
|
|
|
|
return -1;
|
2012-06-20 06:36:06 -06:00
|
|
|
|
2012-02-20 14:11:37 -07:00
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
/*------------------------------------------------------------------------------
|
|
|
|
* Context: softirq-serialized
|
|
|
|
*/
|
|
|
|
void oz_send_queued_frames(struct oz_pd *pd, int backlog)
|
|
|
|
{
|
2012-06-20 06:36:06 -06:00
|
|
|
while (oz_prepare_frame(pd, 0) >= 0)
|
|
|
|
backlog++;
|
|
|
|
|
|
|
|
switch (pd->mode & (OZ_F_ISOC_NO_ELTS | OZ_F_ISOC_ANYTIME)) {
|
|
|
|
|
|
|
|
case OZ_F_ISOC_NO_ELTS: {
|
|
|
|
backlog += pd->nb_queued_isoc_frames;
|
|
|
|
if (backlog <= 0)
|
|
|
|
goto out;
|
|
|
|
if (backlog > OZ_MAX_SUBMITTED_ISOC)
|
|
|
|
backlog = OZ_MAX_SUBMITTED_ISOC;
|
|
|
|
break;
|
2012-02-20 14:11:37 -07:00
|
|
|
}
|
2012-06-20 06:36:06 -06:00
|
|
|
case OZ_NO_ELTS_ANYTIME: {
|
|
|
|
if ((backlog <= 0) && (pd->isoc_sent == 0))
|
|
|
|
goto out;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
default: {
|
|
|
|
if (backlog <= 0)
|
|
|
|
goto out;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
while (backlog--) {
|
|
|
|
if (oz_send_next_queued_frame(pd, backlog) < 0)
|
|
|
|
break;
|
2012-02-20 14:11:37 -07:00
|
|
|
}
|
2012-06-20 06:36:06 -06:00
|
|
|
return;
|
|
|
|
|
|
|
|
out: oz_prepare_frame(pd, 1);
|
|
|
|
oz_send_next_queued_frame(pd, 0);
|
2012-02-20 14:11:37 -07:00
|
|
|
}
|
|
|
|
/*------------------------------------------------------------------------------
|
|
|
|
* Context: softirq
|
|
|
|
*/
|
|
|
|
static int oz_send_isoc_frame(struct oz_pd *pd)
|
|
|
|
{
|
2013-02-15 07:22:22 -07:00
|
|
|
struct sk_buff *skb;
|
2012-02-20 14:11:37 -07:00
|
|
|
struct net_device *dev = pd->net_dev;
|
|
|
|
struct oz_hdr *oz_hdr;
|
|
|
|
struct oz_elt *elt;
|
|
|
|
struct list_head *e;
|
|
|
|
struct list_head list;
|
|
|
|
int total_size = sizeof(struct oz_hdr);
|
|
|
|
INIT_LIST_HEAD(&list);
|
|
|
|
|
|
|
|
oz_select_elts_for_tx(&pd->elt_buff, 1, &total_size,
|
|
|
|
pd->max_tx_size, &list);
|
|
|
|
if (list.next == &list)
|
|
|
|
return 0;
|
|
|
|
skb = alloc_skb(total_size + OZ_ALLOCATED_SPACE(dev), GFP_ATOMIC);
|
2013-02-15 07:22:22 -07:00
|
|
|
if (skb == NULL) {
|
2012-02-20 14:11:37 -07:00
|
|
|
oz_trace("Cannot alloc skb\n");
|
|
|
|
oz_elt_info_free_chain(&pd->elt_buff, &list);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
skb_reserve(skb, LL_RESERVED_SPACE(dev));
|
|
|
|
skb_reset_network_header(skb);
|
|
|
|
skb->dev = dev;
|
|
|
|
skb->protocol = htons(OZ_ETHERTYPE);
|
|
|
|
if (dev_hard_header(skb, dev, OZ_ETHERTYPE, pd->mac_addr,
|
|
|
|
dev->dev_addr, skb->len) < 0) {
|
|
|
|
kfree_skb(skb);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
oz_hdr = (struct oz_hdr *)skb_put(skb, total_size);
|
|
|
|
oz_hdr->control = (OZ_PROTOCOL_VERSION<<OZ_VERSION_SHIFT) | OZ_F_ISOC;
|
|
|
|
oz_hdr->last_pkt_num = pd->trigger_pkt_num & OZ_LAST_PN_MASK;
|
|
|
|
elt = (struct oz_elt *)(oz_hdr+1);
|
|
|
|
|
|
|
|
for (e = list.next; e != &list; e = e->next) {
|
|
|
|
struct oz_elt_info *ei;
|
|
|
|
ei = container_of(e, struct oz_elt_info, link);
|
|
|
|
memcpy(elt, ei->data, ei->length);
|
|
|
|
elt = oz_next_elt(elt);
|
|
|
|
}
|
2013-02-15 07:22:22 -07:00
|
|
|
oz_event_log(OZ_EVT_TX_ISOC, 0, 0, NULL, 0);
|
2012-02-20 14:11:37 -07:00
|
|
|
dev_queue_xmit(skb);
|
|
|
|
oz_elt_info_free_chain(&pd->elt_buff, &list);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
/*------------------------------------------------------------------------------
|
|
|
|
* Context: softirq-serialized
|
|
|
|
*/
|
|
|
|
void oz_retire_tx_frames(struct oz_pd *pd, u8 lpn)
|
|
|
|
{
|
|
|
|
struct list_head *e;
|
|
|
|
struct oz_tx_frame *f;
|
2013-02-15 07:22:22 -07:00
|
|
|
struct list_head *first = NULL;
|
|
|
|
struct list_head *last = NULL;
|
2012-02-20 14:11:37 -07:00
|
|
|
u8 diff;
|
|
|
|
u32 pkt_num;
|
|
|
|
|
|
|
|
spin_lock(&pd->tx_frame_lock);
|
|
|
|
e = pd->tx_queue.next;
|
|
|
|
while (e != &pd->tx_queue) {
|
|
|
|
f = container_of(e, struct oz_tx_frame, link);
|
|
|
|
pkt_num = le32_to_cpu(get_unaligned(&f->hdr.pkt_num));
|
|
|
|
diff = (lpn - (pkt_num & OZ_LAST_PN_MASK)) & OZ_LAST_PN_MASK;
|
2012-06-20 06:36:06 -06:00
|
|
|
if ((diff > OZ_LAST_PN_HALF_CYCLE) || (pkt_num == 0))
|
2012-02-20 14:11:37 -07:00
|
|
|
break;
|
2012-06-20 06:36:06 -06:00
|
|
|
oz_trace2(OZ_TRACE_TX_FRAMES, "Releasing pkt_num= %u, nb= %d\n",
|
|
|
|
pkt_num, pd->nb_queued_frames);
|
2013-02-15 07:22:22 -07:00
|
|
|
if (first == NULL)
|
2012-02-20 14:11:37 -07:00
|
|
|
first = e;
|
|
|
|
last = e;
|
|
|
|
e = e->next;
|
|
|
|
pd->nb_queued_frames--;
|
|
|
|
}
|
|
|
|
if (first) {
|
|
|
|
last->next->prev = &pd->tx_queue;
|
|
|
|
pd->tx_queue.next = last->next;
|
2013-02-15 07:22:22 -07:00
|
|
|
last->next = NULL;
|
2012-02-20 14:11:37 -07:00
|
|
|
}
|
|
|
|
pd->last_sent_frame = &pd->tx_queue;
|
|
|
|
spin_unlock(&pd->tx_frame_lock);
|
|
|
|
while (first) {
|
|
|
|
f = container_of(first, struct oz_tx_frame, link);
|
|
|
|
first = first->next;
|
|
|
|
oz_retire_frame(pd, f);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
/*------------------------------------------------------------------------------
|
|
|
|
* Precondition: stream_lock must be held.
|
|
|
|
* Context: softirq
|
|
|
|
*/
|
|
|
|
static struct oz_isoc_stream *pd_stream_find(struct oz_pd *pd, u8 ep_num)
|
|
|
|
{
|
|
|
|
struct list_head *e;
|
|
|
|
struct oz_isoc_stream *st;
|
|
|
|
list_for_each(e, &pd->stream_list) {
|
|
|
|
st = container_of(e, struct oz_isoc_stream, link);
|
|
|
|
if (st->ep_num == ep_num)
|
|
|
|
return st;
|
|
|
|
}
|
2013-02-15 07:22:22 -07:00
|
|
|
return NULL;
|
2012-02-20 14:11:37 -07:00
|
|
|
}
|
|
|
|
/*------------------------------------------------------------------------------
|
|
|
|
* Context: softirq
|
|
|
|
*/
|
|
|
|
int oz_isoc_stream_create(struct oz_pd *pd, u8 ep_num)
|
|
|
|
{
|
|
|
|
struct oz_isoc_stream *st =
|
2012-03-02 17:51:09 -07:00
|
|
|
kzalloc(sizeof(struct oz_isoc_stream), GFP_ATOMIC);
|
2012-02-20 14:11:37 -07:00
|
|
|
if (!st)
|
2012-03-02 17:51:09 -07:00
|
|
|
return -ENOMEM;
|
2012-02-20 14:11:37 -07:00
|
|
|
st->ep_num = ep_num;
|
|
|
|
spin_lock_bh(&pd->stream_lock);
|
|
|
|
if (!pd_stream_find(pd, ep_num)) {
|
|
|
|
list_add(&st->link, &pd->stream_list);
|
2013-02-15 07:22:22 -07:00
|
|
|
st = NULL;
|
2012-02-20 14:11:37 -07:00
|
|
|
}
|
|
|
|
spin_unlock_bh(&pd->stream_lock);
|
2012-11-20 04:40:08 -07:00
|
|
|
kfree(st);
|
2012-02-20 14:11:37 -07:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
/*------------------------------------------------------------------------------
|
|
|
|
* Context: softirq or process
|
|
|
|
*/
|
|
|
|
static void oz_isoc_stream_free(struct oz_isoc_stream *st)
|
|
|
|
{
|
2012-08-28 07:11:00 -06:00
|
|
|
kfree_skb(st->skb);
|
2012-03-02 17:51:09 -07:00
|
|
|
kfree(st);
|
2012-02-20 14:11:37 -07:00
|
|
|
}
|
|
|
|
/*------------------------------------------------------------------------------
|
|
|
|
* Context: softirq
|
|
|
|
*/
|
|
|
|
int oz_isoc_stream_delete(struct oz_pd *pd, u8 ep_num)
|
|
|
|
{
|
|
|
|
struct oz_isoc_stream *st;
|
|
|
|
spin_lock_bh(&pd->stream_lock);
|
|
|
|
st = pd_stream_find(pd, ep_num);
|
|
|
|
if (st)
|
|
|
|
list_del(&st->link);
|
|
|
|
spin_unlock_bh(&pd->stream_lock);
|
|
|
|
if (st)
|
|
|
|
oz_isoc_stream_free(st);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
/*------------------------------------------------------------------------------
|
|
|
|
* Context: any
|
|
|
|
*/
|
|
|
|
static void oz_isoc_destructor(struct sk_buff *skb)
|
|
|
|
{
|
|
|
|
atomic_dec(&g_submitted_isoc);
|
|
|
|
oz_event_log(OZ_EVT_TX_ISOC_DONE, atomic_read(&g_submitted_isoc),
|
|
|
|
0, skb, 0);
|
|
|
|
}
|
|
|
|
/*------------------------------------------------------------------------------
|
|
|
|
* Context: softirq
|
|
|
|
*/
|
2013-02-15 13:17:24 -07:00
|
|
|
int oz_send_isoc_unit(struct oz_pd *pd, u8 ep_num, const u8 *data, int len)
|
2012-02-20 14:11:37 -07:00
|
|
|
{
|
|
|
|
struct net_device *dev = pd->net_dev;
|
|
|
|
struct oz_isoc_stream *st;
|
|
|
|
u8 nb_units = 0;
|
2013-02-15 07:22:22 -07:00
|
|
|
struct sk_buff *skb = NULL;
|
|
|
|
struct oz_hdr *oz_hdr = NULL;
|
2012-02-20 14:11:37 -07:00
|
|
|
int size = 0;
|
|
|
|
spin_lock_bh(&pd->stream_lock);
|
|
|
|
st = pd_stream_find(pd, ep_num);
|
|
|
|
if (st) {
|
|
|
|
skb = st->skb;
|
2013-02-15 07:22:22 -07:00
|
|
|
st->skb = NULL;
|
2012-02-20 14:11:37 -07:00
|
|
|
nb_units = st->nb_units;
|
|
|
|
st->nb_units = 0;
|
|
|
|
oz_hdr = st->oz_hdr;
|
|
|
|
size = st->size;
|
|
|
|
}
|
|
|
|
spin_unlock_bh(&pd->stream_lock);
|
|
|
|
if (!st)
|
|
|
|
return 0;
|
|
|
|
if (!skb) {
|
|
|
|
/* Allocate enough space for max size frame. */
|
|
|
|
skb = alloc_skb(pd->max_tx_size + OZ_ALLOCATED_SPACE(dev),
|
|
|
|
GFP_ATOMIC);
|
2013-02-15 07:22:22 -07:00
|
|
|
if (skb == NULL)
|
2012-02-20 14:11:37 -07:00
|
|
|
return 0;
|
|
|
|
/* Reserve the head room for lower layers. */
|
|
|
|
skb_reserve(skb, LL_RESERVED_SPACE(dev));
|
|
|
|
skb_reset_network_header(skb);
|
|
|
|
skb->dev = dev;
|
|
|
|
skb->protocol = htons(OZ_ETHERTYPE);
|
2012-06-20 06:36:11 -06:00
|
|
|
/* For audio packet set priority to AC_VO */
|
|
|
|
skb->priority = 0x7;
|
2012-02-20 14:11:37 -07:00
|
|
|
size = sizeof(struct oz_hdr) + sizeof(struct oz_isoc_large);
|
|
|
|
oz_hdr = (struct oz_hdr *)skb_put(skb, size);
|
|
|
|
}
|
|
|
|
memcpy(skb_put(skb, len), data, len);
|
|
|
|
size += len;
|
|
|
|
if (++nb_units < pd->ms_per_isoc) {
|
|
|
|
spin_lock_bh(&pd->stream_lock);
|
|
|
|
st->skb = skb;
|
|
|
|
st->nb_units = nb_units;
|
|
|
|
st->oz_hdr = oz_hdr;
|
|
|
|
st->size = size;
|
|
|
|
spin_unlock_bh(&pd->stream_lock);
|
|
|
|
} else {
|
|
|
|
struct oz_hdr oz;
|
|
|
|
struct oz_isoc_large iso;
|
|
|
|
spin_lock_bh(&pd->stream_lock);
|
|
|
|
iso.frame_number = st->frame_num;
|
|
|
|
st->frame_num += nb_units;
|
|
|
|
spin_unlock_bh(&pd->stream_lock);
|
|
|
|
oz.control =
|
|
|
|
(OZ_PROTOCOL_VERSION<<OZ_VERSION_SHIFT) | OZ_F_ISOC;
|
|
|
|
oz.last_pkt_num = pd->trigger_pkt_num & OZ_LAST_PN_MASK;
|
|
|
|
oz.pkt_num = 0;
|
|
|
|
iso.endpoint = ep_num;
|
|
|
|
iso.format = OZ_DATA_F_ISOC_LARGE;
|
|
|
|
iso.ms_data = nb_units;
|
|
|
|
memcpy(oz_hdr, &oz, sizeof(oz));
|
|
|
|
memcpy(oz_hdr+1, &iso, sizeof(iso));
|
|
|
|
if (dev_hard_header(skb, dev, OZ_ETHERTYPE, pd->mac_addr,
|
2012-06-20 06:36:06 -06:00
|
|
|
dev->dev_addr, skb->len) < 0)
|
|
|
|
goto out;
|
|
|
|
|
|
|
|
skb->destructor = oz_isoc_destructor;
|
|
|
|
/*Queue for Xmit if mode is not ANYTIME*/
|
|
|
|
if (!(pd->mode & OZ_F_ISOC_ANYTIME)) {
|
|
|
|
struct oz_tx_frame *isoc_unit = NULL;
|
|
|
|
int nb = pd->nb_queued_isoc_frames;
|
2012-07-23 11:49:46 -06:00
|
|
|
if (nb >= pd->isoc_latency) {
|
2012-06-20 06:36:06 -06:00
|
|
|
oz_trace2(OZ_TRACE_TX_FRAMES,
|
|
|
|
"Dropping ISOC Unit nb= %d\n",
|
|
|
|
nb);
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
isoc_unit = oz_tx_frame_alloc(pd);
|
|
|
|
if (isoc_unit == NULL)
|
|
|
|
goto out;
|
|
|
|
isoc_unit->hdr = oz;
|
|
|
|
isoc_unit->skb = skb;
|
|
|
|
spin_lock_bh(&pd->tx_frame_lock);
|
|
|
|
list_add_tail(&isoc_unit->link, &pd->tx_queue);
|
|
|
|
pd->nb_queued_isoc_frames++;
|
|
|
|
spin_unlock_bh(&pd->tx_frame_lock);
|
|
|
|
oz_trace2(OZ_TRACE_TX_FRAMES,
|
|
|
|
"Added ISOC Frame to Tx Queue isoc_nb= %d, nb= %d\n",
|
|
|
|
pd->nb_queued_isoc_frames, pd->nb_queued_frames);
|
|
|
|
oz_event_log(OZ_EVT_TX_ISOC, nb_units, iso.frame_number,
|
|
|
|
skb, atomic_read(&g_submitted_isoc));
|
|
|
|
return 0;
|
2012-02-20 14:11:37 -07:00
|
|
|
}
|
2012-06-20 06:36:06 -06:00
|
|
|
|
|
|
|
/*In ANYTIME mode Xmit unit immediately*/
|
2012-02-20 14:11:37 -07:00
|
|
|
if (atomic_read(&g_submitted_isoc) < OZ_MAX_SUBMITTED_ISOC) {
|
|
|
|
atomic_inc(&g_submitted_isoc);
|
|
|
|
oz_event_log(OZ_EVT_TX_ISOC, nb_units, iso.frame_number,
|
2012-06-20 06:36:06 -06:00
|
|
|
skb, atomic_read(&g_submitted_isoc));
|
|
|
|
if (dev_queue_xmit(skb) < 0) {
|
2013-02-15 07:22:22 -07:00
|
|
|
oz_event_log(OZ_EVT_TX_ISOC_DROP, 0, 0, NULL, 0);
|
2012-02-20 14:11:37 -07:00
|
|
|
return -1;
|
2012-06-20 06:36:06 -06:00
|
|
|
} else
|
|
|
|
return 0;
|
2012-02-20 14:11:37 -07:00
|
|
|
}
|
2012-06-20 06:36:06 -06:00
|
|
|
|
2013-02-15 07:22:22 -07:00
|
|
|
out: oz_event_log(OZ_EVT_TX_ISOC_DROP, 0, 0, NULL, 0);
|
2012-06-20 06:36:06 -06:00
|
|
|
kfree_skb(skb);
|
|
|
|
return -1;
|
|
|
|
|
2012-02-20 14:11:37 -07:00
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
/*------------------------------------------------------------------------------
|
|
|
|
* Context: process
|
|
|
|
*/
|
|
|
|
void oz_apps_init(void)
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
for (i = 0; i < OZ_APPID_MAX; i++)
|
|
|
|
if (g_app_if[i].init)
|
|
|
|
g_app_if[i].init();
|
|
|
|
}
|
|
|
|
/*------------------------------------------------------------------------------
|
|
|
|
* Context: process
|
|
|
|
*/
|
|
|
|
void oz_apps_term(void)
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
/* Terminate all the apps. */
|
|
|
|
for (i = 0; i < OZ_APPID_MAX; i++)
|
|
|
|
if (g_app_if[i].term)
|
|
|
|
g_app_if[i].term();
|
|
|
|
}
|
|
|
|
/*------------------------------------------------------------------------------
|
|
|
|
* Context: softirq-serialized
|
|
|
|
*/
|
|
|
|
void oz_handle_app_elt(struct oz_pd *pd, u8 app_id, struct oz_elt *elt)
|
|
|
|
{
|
2013-02-15 13:17:24 -07:00
|
|
|
const struct oz_app_if *ai;
|
2012-03-01 23:59:55 -07:00
|
|
|
if (app_id == 0 || app_id > OZ_APPID_MAX)
|
2012-02-20 14:11:37 -07:00
|
|
|
return;
|
|
|
|
ai = &g_app_if[app_id-1];
|
|
|
|
ai->rx(pd, elt);
|
|
|
|
}
|
|
|
|
/*------------------------------------------------------------------------------
|
|
|
|
* Context: softirq or process
|
|
|
|
*/
|
|
|
|
void oz_pd_indicate_farewells(struct oz_pd *pd)
|
|
|
|
{
|
|
|
|
struct oz_farewell *f;
|
2013-02-15 13:17:24 -07:00
|
|
|
const struct oz_app_if *ai = &g_app_if[OZ_APPID_USB-1];
|
2012-02-20 14:11:37 -07:00
|
|
|
while (1) {
|
|
|
|
oz_polling_lock_bh();
|
|
|
|
if (list_empty(&pd->farewell_list)) {
|
|
|
|
oz_polling_unlock_bh();
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
f = list_first_entry(&pd->farewell_list,
|
|
|
|
struct oz_farewell, link);
|
|
|
|
list_del(&f->link);
|
|
|
|
oz_polling_unlock_bh();
|
|
|
|
if (ai->farewell)
|
|
|
|
ai->farewell(pd, f->ep_num, f->report, f->len);
|
2012-03-02 17:51:09 -07:00
|
|
|
kfree(f);
|
2012-02-20 14:11:37 -07:00
|
|
|
}
|
|
|
|
}
|