diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/plugins/hs_apps/sapi/vpp_echo.c | 10 | ||||
| -rw-r--r-- | src/plugins/unittest/session_test.c | 11 | ||||
| -rw-r--r-- | src/svm/message_queue.c | 177 | ||||
| -rw-r--r-- | src/svm/message_queue.h | 78 | ||||
| -rw-r--r-- | src/vcl/vppcom.c | 136 | ||||
| -rw-r--r-- | src/vnet/session/application_interface.h | 2 | ||||
| -rw-r--r-- | src/vnet/session/session_node.c | 5 |
7 files changed, 222 insertions, 197 deletions
diff --git a/src/plugins/hs_apps/sapi/vpp_echo.c b/src/plugins/hs_apps/sapi/vpp_echo.c index 19b5808c550..816b7d41c77 100644 --- a/src/plugins/hs_apps/sapi/vpp_echo.c +++ b/src/plugins/hs_apps/sapi/vpp_echo.c @@ -808,15 +808,12 @@ echo_process_rpcs (echo_main_t * em) while (em->state < STATE_DATA_DONE && !em->time_to_stop) { - svm_msg_q_lock (mq); if (svm_msg_q_is_empty (mq) && svm_msg_q_timedwait (mq, 1)) { - svm_msg_q_unlock (mq); continue; } - svm_msg_q_sub_w_lock (mq, &msg); + svm_msg_q_sub_raw (mq, &msg); rpc = svm_msg_q_msg_data (mq, &msg); - svm_msg_q_unlock (mq); ((echo_rpc_t) rpc->fp) (em, &rpc->args); svm_msg_q_free_msg (mq, &msg); } @@ -876,18 +873,15 @@ echo_mq_thread_fn (void *arg) if (em->periodic_stats_delta) echo_print_periodic_stats (em); - svm_msg_q_lock (mq); if (svm_msg_q_is_empty (mq) && svm_msg_q_timedwait (mq, 1)) { - svm_msg_q_unlock (mq); continue; } for (i = 0; i < svm_msg_q_size (mq); i++) { vec_add2 (msg_vec, msg, 1); - svm_msg_q_sub_w_lock (mq, msg); + svm_msg_q_sub_raw (mq, msg); } - svm_msg_q_unlock (mq); for (i = 0; i < vec_len (msg_vec); i++) { diff --git a/src/plugins/unittest/session_test.c b/src/plugins/unittest/session_test.c index 6496a99ba2c..cd99b0c5416 100644 --- a/src/plugins/unittest/session_test.c +++ b/src/plugins/unittest/session_test.c @@ -1738,9 +1738,7 @@ wait_for_event (svm_msg_q_t * mq, int fd, int epfd, u8 use_eventfd) { if (!use_eventfd) { - svm_msg_q_lock (mq); - while (svm_msg_q_is_empty (mq)) - svm_msg_q_wait (mq); + svm_msg_q_wait (mq, SVM_MQ_WAIT_EMPTY); } else { @@ -1764,10 +1762,7 @@ wait_for_event (svm_msg_q_t * mq, int fd, int epfd, u8 use_eventfd) continue; if (!svm_msg_q_is_empty (mq)) - { - svm_msg_q_lock (mq); - break; - } + break; } } } @@ -1871,7 +1866,7 @@ session_test_mq_speed (vlib_main_t * vm, unformat_input_t * input) for (i = 0; i < n_test_msgs; i++) { wait_for_event (mq, prod_fd, epfd, use_eventfd); - svm_msg_q_sub_w_lock (mq, &msg); + svm_msg_q_sub_raw (mq, &msg); svm_msg_q_free_msg (mq, &msg); svm_msg_q_unlock (mq); *counter = *counter + 1; diff --git a/src/svm/message_queue.c b/src/svm/message_queue.c index fdf9293b18c..b423826cb83 100644 --- a/src/svm/message_queue.c +++ b/src/svm/message_queue.c @@ -163,21 +163,36 @@ svm_msg_q_attach (svm_msg_q_t *mq, void *smq_base) offset = sizeof (*ring) + ring->nitems * ring->elsize; ring = (void *) ((u8 *) ring + offset); } + clib_spinlock_init (&mq->q.lock); } void svm_msg_q_free (svm_msg_q_t * mq) { clib_mem_free (mq->q.shr); + clib_spinlock_free (&mq->q.lock); clib_mem_free (mq); } static void -svm_msg_q_send_signal (svm_msg_q_t *mq) +svm_msg_q_send_signal (svm_msg_q_t *mq, u8 is_consumer) { if (mq->q.evtfd == -1) { + if (is_consumer) + { + int rv = pthread_mutex_lock (&mq->q.shr->mutex); + if (PREDICT_FALSE (rv == EOWNERDEAD)) + { + rv = pthread_mutex_consistent (&mq->q.shr->mutex); + return; + } + } + (void) pthread_cond_broadcast (&mq->q.shr->condvar); + + if (is_consumer) + pthread_mutex_unlock (&mq->q.shr->mutex); } else { @@ -232,7 +247,7 @@ svm_msg_q_lock_and_alloc_msg_w_ring (svm_msg_q_t * mq, u32 ring_index, svm_msg_q_lock (mq); while (svm_msg_q_is_full (mq) || svm_msg_q_ring_is_full (mq, ring_index)) - svm_msg_q_wait (mq); + svm_msg_q_wait (mq, SVM_MQ_WAIT_FULL); *msg = svm_msg_q_alloc_msg_w_ring (mq, ring_index); } return 0; @@ -253,7 +268,7 @@ svm_msg_q_alloc_msg (svm_msg_q_t * mq, u32 nbytes) msg.ring_index = ring - mq->rings; msg.elt_index = sr->tail; sr->tail = (sr->tail + 1) % ring->nitems; - clib_atomic_fetch_add_rel (&sr->cursize, 1); + clib_atomic_fetch_add_relax (&sr->cursize, 1); break; } return msg; @@ -271,7 +286,7 @@ svm_msg_q_free_msg (svm_msg_q_t * mq, svm_msg_q_msg_t * msg) { svm_msg_q_ring_shared_t *sr; svm_msg_q_ring_t *ring; - int need_signal; + u32 need_signal; ASSERT (vec_len (mq->rings) > msg->ring_index); ring = svm_msg_q_ring_inline (mq, msg->ring_index); @@ -282,16 +297,17 @@ svm_msg_q_free_msg (svm_msg_q_t * mq, svm_msg_q_msg_t * msg) } else { - clib_warning ("message out of order"); + clib_warning ("message out of order: elt %u head %u ring %u", + msg->elt_index, sr->head, msg->ring_index); /* for now, expect messages to be processed in order */ ASSERT (0); } - need_signal = sr->cursize == ring->nitems; - clib_atomic_fetch_sub_rel (&sr->cursize, 1); + need_signal = clib_atomic_load_relax_n (&sr->cursize) == ring->nitems; + clib_atomic_fetch_sub_relax (&sr->cursize, 1); if (PREDICT_FALSE (need_signal)) - svm_msg_q_send_signal (mq); + svm_msg_q_send_signal (mq, 1 /* is consumer */); } static int @@ -331,7 +347,7 @@ svm_msg_q_add_raw (svm_msg_q_t *mq, u8 *elem) sz = clib_atomic_fetch_add_rel (&sq->cursize, 1); if (!sz) - svm_msg_q_send_signal (mq); + svm_msg_q_send_signal (mq, 0 /* is consumer */); } int @@ -355,7 +371,7 @@ svm_msg_q_add (svm_msg_q_t * mq, svm_msg_q_msg_t * msg, int nowait) if (nowait) return (-2); while (svm_msg_q_is_full (mq)) - svm_msg_q_wait (mq); + svm_msg_q_wait (mq, SVM_MQ_WAIT_FULL); } svm_msg_q_add_raw (mq, (u8 *) msg); @@ -373,8 +389,8 @@ svm_msg_q_add_and_unlock (svm_msg_q_t * mq, svm_msg_q_msg_t * msg) svm_msg_q_unlock (mq); } -static int -svm_msg_q_sub_raw (svm_msg_q_t *mq, u8 *elem) +int +svm_msg_q_sub_raw (svm_msg_q_t *mq, svm_msg_q_msg_t *elem) { svm_msg_q_shared_queue_t *sq = mq->q.shr; i8 *headp; @@ -387,69 +403,76 @@ svm_msg_q_sub_raw (svm_msg_q_t *mq, u8 *elem) sq->head = (sq->head + 1) % sq->maxsize; - sz = clib_atomic_fetch_sub_rel (&sq->cursize, 1); + sz = clib_atomic_fetch_sub_relax (&sq->cursize, 1); if (PREDICT_FALSE (sz == sq->maxsize)) - svm_msg_q_send_signal (mq); + svm_msg_q_send_signal (mq, 1 /* is consumer */); return 0; } int -svm_msg_q_sub (svm_msg_q_t * mq, svm_msg_q_msg_t * msg, - svm_q_conditional_wait_t cond, u32 time) +svm_msg_q_sub_raw_batch (svm_msg_q_t *mq, svm_msg_q_msg_t *msg_buf, u32 n_msgs) { - int rc = 0; + svm_msg_q_shared_queue_t *sq = mq->q.shr; + u32 sz, to_deq; + i8 *headp; - if (cond == SVM_Q_NOWAIT) + sz = svm_msg_q_size (mq); + ASSERT (sz); + to_deq = clib_min (sz, n_msgs); + + headp = (i8 *) (&sq->data[0] + sq->elsize * sq->head); + + if (sq->head + to_deq < sq->maxsize) { - /* zero on success */ - if (svm_msg_q_try_lock (mq)) - { - return (-1); - } + clib_memcpy_fast (msg_buf, headp, sq->elsize * to_deq); + sq->head += to_deq; } else - svm_msg_q_lock (mq); + { + u32 first_batch = sq->maxsize - sq->head; + clib_memcpy_fast (msg_buf, headp, sq->elsize * first_batch); + clib_memcpy_fast (msg_buf + first_batch, sq->data, + sq->elsize * (to_deq - first_batch)); + sq->head = (sq->head + to_deq) % sq->maxsize; + } + + clib_atomic_fetch_sub_relax (&sq->cursize, to_deq); + if (PREDICT_FALSE (sz == sq->maxsize)) + svm_msg_q_send_signal (mq, 1 /* is consumer */); + + return to_deq; +} + +int +svm_msg_q_sub (svm_msg_q_t *mq, svm_msg_q_msg_t *msg, + svm_q_conditional_wait_t cond, u32 time) +{ + int rc = 0; - if (PREDICT_FALSE (svm_msg_q_is_empty (mq))) + if (svm_msg_q_is_empty (mq)) { if (cond == SVM_Q_NOWAIT) { - svm_msg_q_unlock (mq); return (-2); } else if (cond == SVM_Q_TIMEDWAIT) { - while (svm_msg_q_is_empty (mq) && rc == 0) - rc = svm_msg_q_timedwait (mq, time); - - if (rc == ETIMEDOUT) - { - svm_msg_q_unlock (mq); - return ETIMEDOUT; - } + if ((rc = svm_msg_q_timedwait (mq, time))) + return rc; } else { - while (svm_msg_q_is_empty (mq)) - svm_msg_q_wait (mq); + svm_msg_q_wait (mq, SVM_MQ_WAIT_EMPTY); } } - svm_msg_q_sub_raw (mq, (u8 *) msg); - - svm_msg_q_unlock (mq); + svm_msg_q_sub_raw (mq, msg); return 0; } void -svm_msg_q_sub_w_lock (svm_msg_q_t *mq, svm_msg_q_msg_t *msg) -{ - svm_msg_q_sub_raw (mq, (u8 *) msg); -} - -void svm_msg_q_set_eventfd (svm_msg_q_t *mq, int fd) { mq->q.evtfd = fd; @@ -465,29 +488,46 @@ svm_msg_q_alloc_eventfd (svm_msg_q_t *mq) return 0; } -void -svm_msg_q_wait (svm_msg_q_t *mq) +int +svm_msg_q_wait (svm_msg_q_t *mq, svm_msg_q_wait_type_t type) { + u8 (*fn) (svm_msg_q_t *); + int rv; + + fn = (type == SVM_MQ_WAIT_EMPTY) ? svm_msg_q_is_empty : svm_msg_q_is_full; + if (mq->q.evtfd == -1) { - pthread_cond_wait (&mq->q.shr->condvar, &mq->q.shr->mutex); + rv = pthread_mutex_lock (&mq->q.shr->mutex); + if (PREDICT_FALSE (rv == EOWNERDEAD)) + { + rv = pthread_mutex_consistent (&mq->q.shr->mutex); + return rv; + } + + while (fn (mq)) + pthread_cond_wait (&mq->q.shr->condvar, &mq->q.shr->mutex); + + pthread_mutex_unlock (&mq->q.shr->mutex); } else { u64 buf; - int rv; - svm_msg_q_unlock (mq); - while ((rv = read (mq->q.evtfd, &buf, sizeof (buf))) < 0) + while (fn (mq)) { - if (errno != EAGAIN) + while ((rv = read (mq->q.evtfd, &buf, sizeof (buf))) < 0) { - clib_unix_warning ("read error"); - return; + if (errno != EAGAIN) + { + clib_unix_warning ("read error"); + return rv; + } } } - svm_msg_q_lock (mq); } + + return 0; } int @@ -495,11 +535,32 @@ svm_msg_q_timedwait (svm_msg_q_t *mq, double timeout) { if (mq->q.evtfd == -1) { + svm_msg_q_shared_queue_t *sq = mq->q.shr; struct timespec ts; + u32 sz; + int rv; + + rv = pthread_mutex_lock (&sq->mutex); + if (PREDICT_FALSE (rv == EOWNERDEAD)) + { + rv = pthread_mutex_consistent (&sq->mutex); + return rv; + } + + /* check if we're still in a signalable state after grabbing lock */ + sz = svm_msg_q_size (mq); + if (sz != 0 && sz != sq->maxsize) + { + pthread_mutex_unlock (&sq->mutex); + return 0; + } + ts.tv_sec = unix_time_now () + (u32) timeout; ts.tv_nsec = (timeout - (u32) timeout) * 1e9; - return pthread_cond_timedwait (&mq->q.shr->condvar, &mq->q.shr->mutex, - &ts); + rv = pthread_cond_timedwait (&sq->condvar, &sq->mutex, &ts); + + pthread_mutex_unlock (&sq->mutex); + return rv; } else { @@ -512,11 +573,9 @@ svm_msg_q_timedwait (svm_msg_q_t *mq, double timeout) setsockopt (mq->q.evtfd, SOL_SOCKET, SO_RCVTIMEO, (const char *) &tv, sizeof tv); - svm_msg_q_unlock (mq); rv = read (mq->q.evtfd, &buf, sizeof (buf)); if (rv < 0) clib_warning ("read %u", errno); - svm_msg_q_lock (mq); return rv < 0 ? errno : 0; } diff --git a/src/svm/message_queue.h b/src/svm/message_queue.h index 7716c6724d8..1ef773d9f0a 100644 --- a/src/svm/message_queue.h +++ b/src/svm/message_queue.h @@ -22,6 +22,7 @@ #include <vppinfra/clib.h> #include <vppinfra/error.h> +#include <vppinfra/lock.h> #include <svm/queue.h> typedef struct svm_msg_q_shr_queue_ @@ -41,6 +42,7 @@ typedef struct svm_msg_q_queue_ { svm_msg_q_shared_queue_t *shr; /**< pointer to shared queue */ int evtfd; /**< producer/consumer eventfd */ + clib_spinlock_t lock; /**< private lock for multi-producer */ } svm_msg_q_queue_t; typedef struct svm_msg_q_ring_shared_ @@ -99,6 +101,13 @@ typedef union } svm_msg_q_msg_t; #define SVM_MQ_INVALID_MSG { .as_u64 = ~0 } + +typedef enum svm_msg_q_wait_type_ +{ + SVM_MQ_WAIT_EMPTY, + SVM_MQ_WAIT_FULL +} svm_msg_q_wait_type_t; + /** * Allocate message queue * @@ -206,6 +215,7 @@ void svm_msg_q_add_and_unlock (svm_msg_q_t * mq, svm_msg_q_msg_t * msg); * Consumer dequeue one message from queue * * This returns the message pointing to the data in the message rings. + * Should only be used in single consumer scenarios as no locks are grabbed. * The consumer is expected to call @ref svm_msg_q_free_msg once it * finishes processing/copies the message data. * @@ -219,18 +229,34 @@ int svm_msg_q_sub (svm_msg_q_t * mq, svm_msg_q_msg_t * msg, svm_q_conditional_wait_t cond, u32 time); /** - * Consumer dequeue one message from queue with mutex held + * Consumer dequeue one message from queue * - * Returns the message pointing to the data in the message rings under the - * assumption that the message queue lock is already held. The consumer is - * expected to call @ref svm_msg_q_free_msg once it finishes + * Returns the message pointing to the data in the message rings. Should only + * be used in single consumer scenarios as no locks are grabbed. The consumer + * is expected to call @ref svm_msg_q_free_msg once it finishes * processing/copies the message data. * * @param mq message queue * @param msg pointer to structure where message is to be received * @return success status */ -void svm_msg_q_sub_w_lock (svm_msg_q_t * mq, svm_msg_q_msg_t * msg); +int svm_msg_q_sub_raw (svm_msg_q_t *mq, svm_msg_q_msg_t *elem); + +/** + * Consumer dequeue multiple messages from queue + * + * Returns the message pointing to the data in the message rings. Should only + * be used in single consumer scenarios as no locks are grabbed. The consumer + * is expected to call @ref svm_msg_q_free_msg once it finishes + * processing/copies the message data. + * + * @param mq message queue + * @param msg_buf pointer to array of messages to received + * @param n_msgs lengt of msg_buf array + * @return number of messages dequeued + */ +int svm_msg_q_sub_raw_batch (svm_msg_q_t *mq, svm_msg_q_msg_t *msg_buf, + u32 n_msgs); /** * Get data for message in queue @@ -321,10 +347,17 @@ svm_msg_q_msg_is_invalid (svm_msg_q_msg_t * msg) static inline int svm_msg_q_try_lock (svm_msg_q_t * mq) { - int rv = pthread_mutex_trylock (&mq->q.shr->mutex); - if (PREDICT_FALSE (rv == EOWNERDEAD)) - rv = pthread_mutex_consistent (&mq->q.shr->mutex); - return rv; + if (mq->q.evtfd == -1) + { + int rv = pthread_mutex_trylock (&mq->q.shr->mutex); + if (PREDICT_FALSE (rv == EOWNERDEAD)) + rv = pthread_mutex_consistent (&mq->q.shr->mutex); + return rv; + } + else + { + return !clib_spinlock_trylock (&mq->q.lock); + } } /** @@ -333,10 +366,18 @@ svm_msg_q_try_lock (svm_msg_q_t * mq) static inline int svm_msg_q_lock (svm_msg_q_t * mq) { - int rv = pthread_mutex_lock (&mq->q.shr->mutex); - if (PREDICT_FALSE (rv == EOWNERDEAD)) - rv = pthread_mutex_consistent (&mq->q.shr->mutex); - return rv; + if (mq->q.evtfd == -1) + { + int rv = pthread_mutex_lock (&mq->q.shr->mutex); + if (PREDICT_FALSE (rv == EOWNERDEAD)) + rv = pthread_mutex_consistent (&mq->q.shr->mutex); + return rv; + } + else + { + clib_spinlock_lock (&mq->q.lock); + return 0; + } } /** @@ -345,7 +386,14 @@ svm_msg_q_lock (svm_msg_q_t * mq) static inline void svm_msg_q_unlock (svm_msg_q_t * mq) { - pthread_mutex_unlock (&mq->q.shr->mutex); + if (mq->q.evtfd == -1) + { + pthread_mutex_unlock (&mq->q.shr->mutex); + } + else + { + clib_spinlock_unlock (&mq->q.lock); + } } /** @@ -354,7 +402,7 @@ svm_msg_q_unlock (svm_msg_q_t * mq) * Must be called with mutex held. The queue only works non-blocking * with eventfds, so handle blocking calls as an exception here. */ -void svm_msg_q_wait (svm_msg_q_t *mq); +int svm_msg_q_wait (svm_msg_q_t *mq, svm_msg_q_wait_type_t type); /** * Timed wait for message queue event diff --git a/src/vcl/vppcom.c b/src/vcl/vppcom.c index cf8bb72d451..21892438c37 100644 --- a/src/vcl/vppcom.c +++ b/src/vcl/vppcom.c @@ -25,15 +25,14 @@ __thread uword __vcl_worker_index = ~0; static inline int vcl_mq_dequeue_batch (vcl_worker_t * wrk, svm_msg_q_t * mq, u32 n_max_msg) { - svm_msg_q_msg_t *msg; - u32 n_msgs; - int i; + u32 n_msgs = 0, sz, len; - n_msgs = clib_min (svm_msg_q_size (mq), n_max_msg); - for (i = 0; i < n_msgs; i++) + while ((sz = svm_msg_q_size (mq))) { - vec_add2 (wrk->mq_msg_vector, msg, 1); - svm_msg_q_sub_w_lock (mq, msg); + len = vec_len (wrk->mq_msg_vector); + vec_validate (wrk->mq_msg_vector, len + sz - 1); + svm_msg_q_sub_raw_batch (mq, wrk->mq_msg_vector + len, sz); + n_msgs += sz; } return n_msgs; } @@ -1101,18 +1100,15 @@ vcl_handle_pending_wrk_updates (vcl_worker_t * wrk) } void -vcl_flush_mq_events (void) +vcl_worker_flush_mq_events (vcl_worker_t *wrk) { - vcl_worker_t *wrk = vcl_worker_get_current (); svm_msg_q_msg_t *msg; session_event_t *e; svm_msg_q_t *mq; int i; mq = wrk->app_event_queue; - svm_msg_q_lock (mq); vcl_mq_dequeue_batch (wrk, mq, ~0); - svm_msg_q_unlock (mq); for (i = 0; i < vec_len (wrk->mq_msg_vector); i++) { @@ -1125,6 +1121,12 @@ vcl_flush_mq_events (void) vcl_handle_pending_wrk_updates (wrk); } +void +vcl_flush_mq_events (void) +{ + vcl_worker_flush_mq_events (vcl_worker_get_current ()); +} + static int vppcom_session_unbind (u32 session_handle) { @@ -1539,11 +1541,11 @@ vppcom_session_accept (uint32_t listen_session_handle, vppcom_endpt_t * ep, vcl_session_t *listen_session = 0; vcl_session_t *client_session = 0; vcl_session_msg_t *evt; - svm_msg_q_msg_t msg; - session_event_t *e; u8 is_nonblocking; int rv; +again: + listen_session = vcl_session_get_w_handle (wrk, listen_session_handle); if (!listen_session) return VPPCOM_EBADFD; @@ -1567,19 +1569,9 @@ vppcom_session_accept (uint32_t listen_session_handle, vppcom_endpt_t * ep, if (svm_msg_q_is_empty (wrk->app_event_queue) && is_nonblocking) return VPPCOM_EAGAIN; - if (svm_msg_q_sub (wrk->app_event_queue, &msg, SVM_Q_WAIT, 0)) - return VPPCOM_EAGAIN; - - e = svm_msg_q_msg_data (wrk->app_event_queue, &msg); - if (e->event_type != SESSION_CTRL_EVT_ACCEPTED) - { - vcl_handle_mq_event (wrk, e); - svm_msg_q_free_msg (wrk->app_event_queue, &msg); - continue; - } - clib_memcpy_fast (&accepted_msg, e->data, sizeof (accepted_msg)); - svm_msg_q_free_msg (wrk->app_event_queue, &msg); - break; + svm_msg_q_wait (wrk->app_event_queue, SVM_MQ_WAIT_EMPTY); + vcl_worker_flush_mq_events (wrk); + goto again; } handle: @@ -1785,12 +1777,6 @@ vppcom_session_stream_connect (uint32_t session_handle, return rv; } -static u8 -vcl_is_rx_evt_for_session (session_event_t * e, u32 sid, u8 is_ct) -{ - return (e->event_type == SESSION_IO_EVT_RX && e->session_index == sid); -} - static inline int vppcom_session_read_internal (uint32_t session_handle, void *buf, int n, u8 peek) @@ -1799,7 +1785,6 @@ vppcom_session_read_internal (uint32_t session_handle, void *buf, int n, int rv, n_read = 0, is_nonblocking; vcl_session_t *s = 0; svm_fifo_t *rx_fifo; - svm_msg_q_msg_t msg; session_event_t *e; svm_msg_q_t *mq; u8 is_ct; @@ -1844,16 +1829,9 @@ vppcom_session_read_internal (uint32_t session_handle, void *buf, int n, if (is_ct) svm_fifo_unset_event (s->rx_fifo); svm_fifo_unset_event (rx_fifo); - svm_msg_q_lock (mq); - if (svm_msg_q_is_empty (mq)) - svm_msg_q_wait (mq); - - svm_msg_q_sub_w_lock (mq, &msg); - e = svm_msg_q_msg_data (mq, &msg); - svm_msg_q_unlock (mq); - if (!vcl_is_rx_evt_for_session (e, s->session_index, is_ct)) - vcl_handle_mq_event (wrk, e); - svm_msg_q_free_msg (mq, &msg); + + svm_msg_q_wait (mq, SVM_MQ_WAIT_EMPTY); + vcl_worker_flush_mq_events (wrk); } } @@ -1924,8 +1902,6 @@ vppcom_session_read_segments (uint32_t session_handle, int n_read = 0, is_nonblocking; vcl_session_t *s = 0; svm_fifo_t *rx_fifo; - svm_msg_q_msg_t msg; - session_event_t *e; svm_msg_q_t *mq; u8 is_ct; @@ -1959,16 +1935,9 @@ vppcom_session_read_segments (uint32_t session_handle, if (is_ct) svm_fifo_unset_event (s->rx_fifo); svm_fifo_unset_event (rx_fifo); - svm_msg_q_lock (mq); - if (svm_msg_q_is_empty (mq)) - svm_msg_q_wait (mq); - - svm_msg_q_sub_w_lock (mq, &msg); - e = svm_msg_q_msg_data (mq, &msg); - svm_msg_q_unlock (mq); - if (!vcl_is_rx_evt_for_session (e, s->session_index, is_ct)) - vcl_handle_mq_event (wrk, e); - svm_msg_q_free_msg (mq, &msg); + + svm_msg_q_wait (mq, SVM_MQ_WAIT_EMPTY); + vcl_worker_flush_mq_events (wrk); } } @@ -2015,12 +1984,6 @@ vppcom_session_free_segments (uint32_t session_handle, uint32_t n_bytes) s->rx_bytes_pending -= n_bytes; } -static u8 -vcl_is_tx_evt_for_session (session_event_t * e, u32 sid, u8 is_ct) -{ - return (e->event_type == SESSION_IO_EVT_TX && e->session_index == sid); -} - always_inline u8 vcl_fifo_is_writeable (svm_fifo_t * f, u32 len, u8 is_dgram) { @@ -2037,9 +2000,7 @@ vppcom_session_write_inline (vcl_worker_t * wrk, vcl_session_t * s, void *buf, { int n_write, is_nonblocking; session_evt_type_t et; - svm_msg_q_msg_t msg; svm_fifo_t *tx_fifo; - session_event_t *e; svm_msg_q_t *mq; u8 is_ct; @@ -2077,17 +2038,9 @@ vppcom_session_write_inline (vcl_worker_t * wrk, vcl_session_t * s, void *buf, svm_fifo_add_want_deq_ntf (tx_fifo, SVM_FIFO_WANT_DEQ_NOTIF); if (vcl_session_is_closing (s)) return vcl_session_closing_error (s); - svm_msg_q_lock (mq); - if (svm_msg_q_is_empty (mq)) - svm_msg_q_wait (mq); - svm_msg_q_sub_w_lock (mq, &msg); - e = svm_msg_q_msg_data (mq, &msg); - svm_msg_q_unlock (mq); - - if (!vcl_is_tx_evt_for_session (e, s->session_index, is_ct)) - vcl_handle_mq_event (wrk, e); - svm_msg_q_free_msg (mq, &msg); + svm_msg_q_wait (mq, SVM_MQ_WAIT_EMPTY); + vcl_worker_flush_mq_events (wrk); } } @@ -2290,35 +2243,22 @@ vcl_select_handle_mq (vcl_worker_t * wrk, svm_msg_q_t * mq, session_event_t *e; u32 i; - svm_msg_q_lock (mq); if (svm_msg_q_is_empty (mq)) { if (*bits_set) - { - svm_msg_q_unlock (mq); - return 0; - } + return 0; if (!time_to_wait) - { - svm_msg_q_unlock (mq); - return 0; - } + return 0; else if (time_to_wait < 0) - { - svm_msg_q_wait (mq); - } + svm_msg_q_wait (mq, SVM_MQ_WAIT_EMPTY); else { if (svm_msg_q_timedwait (mq, time_to_wait)) - { - svm_msg_q_unlock (mq); - return 0; - } + return 0; } } vcl_mq_dequeue_batch (wrk, mq, ~0); - svm_msg_q_unlock (mq); for (i = 0; i < vec_len (wrk->mq_msg_vector); i++) { @@ -2939,30 +2879,20 @@ vcl_epoll_wait_handle_mq (vcl_worker_t * wrk, svm_msg_q_t * mq, if (vec_len (wrk->mq_msg_vector) && svm_msg_q_is_empty (mq)) goto handle_dequeued; - svm_msg_q_lock (mq); if (svm_msg_q_is_empty (mq)) { if (!wait_for_time) - { - svm_msg_q_unlock (mq); - return 0; - } + return 0; else if (wait_for_time < 0) - { - svm_msg_q_wait (mq); - } + svm_msg_q_wait (mq, SVM_MQ_WAIT_EMPTY); else { if (svm_msg_q_timedwait (mq, wait_for_time / 1e3)) - { - svm_msg_q_unlock (mq); - return 0; - } + return 0; } } ASSERT (maxevents > *num_ev); vcl_mq_dequeue_batch (wrk, mq, ~0); - svm_msg_q_unlock (mq); handle_dequeued: for (i = 0; i < vec_len (wrk->mq_msg_vector); i++) diff --git a/src/vnet/session/application_interface.h b/src/vnet/session/application_interface.h index b2e0ef9da84..87bcd902254 100644 --- a/src/vnet/session/application_interface.h +++ b/src/vnet/session/application_interface.h @@ -600,7 +600,7 @@ app_send_io_evt_to_vpp (svm_msg_q_t * mq, u32 session_index, u8 evt_type, svm_msg_q_lock (mq); while (svm_msg_q_ring_is_full (mq, SESSION_MQ_IO_EVT_RING) || svm_msg_q_is_full (mq)) - svm_msg_q_wait (mq); + svm_msg_q_wait (mq, SVM_MQ_WAIT_FULL); msg = svm_msg_q_alloc_msg_w_ring (mq, SESSION_MQ_IO_EVT_RING); evt = (session_event_t *) svm_msg_q_msg_data (mq, &msg); evt->session_index = session_index; diff --git a/src/vnet/session/session_node.c b/src/vnet/session/session_node.c index 37df0c450f8..2c91a2fe092 100644 --- a/src/vnet/session/session_node.c +++ b/src/vnet/session/session_node.c @@ -1425,16 +1425,15 @@ session_queue_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node, * XXX: we may need priorities here */ mq = wrk->vpp_event_queue; n_to_dequeue = svm_msg_q_size (mq); - if (n_to_dequeue && svm_msg_q_try_lock (mq) == 0) + if (n_to_dequeue) { for (i = 0; i < n_to_dequeue; i++) { - svm_msg_q_sub_w_lock (mq, msg); + svm_msg_q_sub_raw (mq, msg); evt = svm_msg_q_msg_data (mq, msg); session_evt_add_to_list (wrk, evt); svm_msg_q_free_msg (mq, msg); } - svm_msg_q_unlock (mq); } SESSION_EVT (SESSION_EVT_DSP_CNTRS, MQ_DEQ, wrk, n_to_dequeue, !i); 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