diff options
| -rw-r--r-- | sys/compat/linuxkpi/common/src/linux_80211.c | 31 | ||||
| -rw-r--r-- | sys/compat/linuxkpi/common/src/linux_80211.h | 14 |
2 files changed, 32 insertions, 13 deletions
diff --git a/sys/compat/linuxkpi/common/src/linux_80211.c b/sys/compat/linuxkpi/common/src/linux_80211.c index d6431e7fc1d5..adddb0fc3500 100644 --- a/sys/compat/linuxkpi/common/src/linux_80211.c +++ b/sys/compat/linuxkpi/common/src/linux_80211.c @@ -272,7 +272,7 @@ lkpi_lsta_alloc(struct ieee80211vap *vap, const uint8_t mac[IEEE80211_ADDR_LEN], } /* Deferred TX path. */ - mtx_init(&lsta->txq_mtx, "lsta_txq", NULL, MTX_DEF); + LKPI_80211_LSTA_TXQ_LOCK_INIT(lsta); TASK_INIT(&lsta->txq_task, 0, lkpi_80211_txq_task, lsta); mbufq_init(&lsta->txq, IFQ_MAXLEN); lsta->txq_ready = true; @@ -304,8 +304,11 @@ lkpi_lsta_free(struct lkpi_sta *lsta, struct ieee80211_node *ni) /* XXX-BZ free resources, ... */ IMPROVE(); - /* XXX locking */ + /* Drain sta->txq[] */ + + LKPI_80211_LSTA_TXQ_LOCK(lsta); lsta->txq_ready = false; + LKPI_80211_LSTA_TXQ_UNLOCK(lsta); /* Drain taskq, won't be restarted until added_to_drv is set again. */ while (taskqueue_cancel(taskqueue_thread, &lsta->txq_task, NULL) != 0) @@ -324,9 +327,7 @@ lkpi_lsta_free(struct lkpi_sta *lsta, struct ieee80211_node *ni) } KASSERT(mbufq_empty(&lsta->txq), ("%s: lsta %p has txq len %d != 0\n", __func__, lsta, mbufq_len(&lsta->txq))); - - /* Drain sta->txq[] */ - mtx_destroy(&lsta->txq_mtx); + LKPI_80211_LSTA_TXQ_LOCK_DESTROY(lsta); /* Remove lsta from vif; that is done by the state machine. Should assert it? */ @@ -3398,16 +3399,21 @@ lkpi_ic_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, struct lkpi_sta *lsta; lsta = ni->ni_drv_data; - /* XXX locking */ + LKPI_80211_LSTA_TXQ_LOCK(lsta); if (!lsta->txq_ready) { + LKPI_80211_LSTA_TXQ_UNLOCK(lsta); + /* + * Free the mbuf (do NOT release ni ref for the m_pkthdr.rcvif! + * ieee80211_raw_output() does that in case of error). + */ m_free(m); return (ENETDOWN); } /* Queue the packet and enqueue the task to handle it. */ - LKPI_80211_LSTA_LOCK(lsta); mbufq_enqueue(&lsta->txq, m); - LKPI_80211_LSTA_UNLOCK(lsta); + taskqueue_enqueue(taskqueue_thread, &lsta->txq_task); + LKPI_80211_LSTA_TXQ_UNLOCK(lsta); #ifdef LINUXKPI_DEBUG_80211 if (linuxkpi_debug_80211 & D80211_TRACE_TX) @@ -3416,7 +3422,6 @@ lkpi_ic_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, mbufq_len(&lsta->txq)); #endif - taskqueue_enqueue(taskqueue_thread, &lsta->txq_task); return (0); } @@ -3624,9 +3629,13 @@ lkpi_80211_txq_task(void *ctx, int pending) mbufq_init(&mq, IFQ_MAXLEN); - LKPI_80211_LSTA_LOCK(lsta); + LKPI_80211_LSTA_TXQ_LOCK(lsta); + /* + * Do not re-check lsta->txq_ready here; we may have a pending + * disassoc frame still. + */ mbufq_concat(&mq, &lsta->txq); - LKPI_80211_LSTA_UNLOCK(lsta); + LKPI_80211_LSTA_TXQ_UNLOCK(lsta); m = mbufq_dequeue(&mq); while (m != NULL) { diff --git a/sys/compat/linuxkpi/common/src/linux_80211.h b/sys/compat/linuxkpi/common/src/linux_80211.h index d9cb1a538f91..7a1d5877b874 100644 --- a/sys/compat/linuxkpi/common/src/linux_80211.h +++ b/sys/compat/linuxkpi/common/src/linux_80211.h @@ -278,8 +278,18 @@ struct lkpi_wiphy { #define LKPI_80211_LVIF_LOCK(_lvif) mtx_lock(&(_lvif)->mtx) #define LKPI_80211_LVIF_UNLOCK(_lvif) mtx_unlock(&(_lvif)->mtx) -#define LKPI_80211_LSTA_LOCK(_lsta) mtx_lock(&(_lsta)->txq_mtx) -#define LKPI_80211_LSTA_UNLOCK(_lsta) mtx_unlock(&(_lsta)->txq_mtx) +#define LKPI_80211_LSTA_TXQ_LOCK_INIT(_lsta) \ + mtx_init(&(_lsta)->txq_mtx, "lsta-txq", NULL, MTX_DEF); +#define LKPI_80211_LSTA_TXQ_LOCK_DESTROY(_lsta) \ + mtx_destroy(&(_lsta)->txq_mtx); +#define LKPI_80211_LSTA_TXQ_LOCK(_lsta) \ + mtx_lock(&(_lsta)->txq_mtx) +#define LKPI_80211_LSTA_TXQ_UNLOCK(_lsta) \ + mtx_unlock(&(_lsta)->txq_mtx) +#define LKPI_80211_LSTA_TXQ_LOCK_ASSERT(_lsta) \ + mtx_assert(&(_lsta)->txq_mtx, MA_OWNED) +#define LKPI_80211_LSTA_TXQ_UNLOCK_ASSERT(_lsta) \ + mtx_assert(&(_lsta)->txq_mtx, MA_NOTOWNED) #define LKPI_80211_LTXQ_LOCK_INIT(_ltxq) \ mtx_init(&(_ltxq)->ltxq_mtx, "ltxq", NULL, MTX_DEF); |