diff options
| author |   Florin Coras <fcoras@cisco.com> | 2022-12-22 15:03:44 -0800 |
|---|---|---|
| committer |   Dave Barach <vpp@barachs.net> | 2023-08-09 18:45:26 +0000 |
| commit | 0242d30fc717aeacb758281dad8e5b2e56bf6709 (patch) | |
| tree | eb7addb00bbe78061fa58442a6e9bdbd7f3e181c /src/svm | |
| parent | 6d733a93b2eb9c16196ee17d5cdc77db21589571 (diff) | |
session: async rx event notifications
Move from synchronous flushing of io and ctrl events from transports to
applications to an async model via a new session_input input node that
runs in interrupt mode. Events are coalesced per application worker.
On the one hand, this helps by minimizing message queue locking churn.
And on the other, it opens the possibility for further optimizations of
event message generation, obviates need for rx rescheduling rpcs and is
a first step towards a fully async data/io rx path.
Type: improvement
Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: Id6bebcb65fc9feef8aa02ddf1af6d9ba6f6745ce
Diffstat (limited to 'src/svm')
| -rw-r--r-- | src/svm/message_queue.c | 10 | ||||
| -rw-r--r-- | src/svm/message_queue.h | 11 |
2 files changed, 16 insertions, 5 deletions
diff --git a/src/svm/message_queue.c b/src/svm/message_queue.c index 2880645b427..ab0d230b1f0 100644 --- a/src/svm/message_queue.c +++ b/src/svm/message_queue.c @@ -340,15 +340,15 @@ svm_msq_q_msg_is_valid (svm_msg_q_t * mq, svm_msg_q_msg_t * msg) return (dist1 < dist2); } -static void -svm_msg_q_add_raw (svm_msg_q_t *mq, u8 *elem) +void +svm_msg_q_add_raw (svm_msg_q_t *mq, svm_msg_q_msg_t *msg) { svm_msg_q_shared_queue_t *sq = mq->q.shr; i8 *tailp; u32 sz; tailp = (i8 *) (&sq->data[0] + sq->elsize * sq->tail); - clib_memcpy_fast (tailp, elem, sq->elsize); + clib_memcpy_fast (tailp, msg, sq->elsize); sq->tail = (sq->tail + 1) % sq->maxsize; @@ -381,7 +381,7 @@ svm_msg_q_add (svm_msg_q_t * mq, svm_msg_q_msg_t * msg, int nowait) svm_msg_q_wait_prod (mq); } - svm_msg_q_add_raw (mq, (u8 *) msg); + svm_msg_q_add_raw (mq, msg); svm_msg_q_unlock (mq); @@ -392,7 +392,7 @@ void svm_msg_q_add_and_unlock (svm_msg_q_t * mq, svm_msg_q_msg_t * msg) { ASSERT (svm_msq_q_msg_is_valid (mq, msg)); - svm_msg_q_add_raw (mq, (u8 *) msg); + svm_msg_q_add_raw (mq, msg); svm_msg_q_unlock (mq); } diff --git a/src/svm/message_queue.h b/src/svm/message_queue.h index 0780cca1c32..4473c44f4e3 100644 --- a/src/svm/message_queue.h +++ b/src/svm/message_queue.h @@ -193,6 +193,17 @@ void svm_msg_q_free_msg (svm_msg_q_t * mq, svm_msg_q_msg_t * msg); /** * Producer enqueue one message to queue * + * Must be called with mq locked. Prior to calling this, the producer should've + * obtained a message buffer from one of the rings. + * + * @param mq message queue + * @param msg message to be enqueued + */ +void svm_msg_q_add_raw (svm_msg_q_t *mq, svm_msg_q_msg_t *msg); + +/** + * Producer enqueue one message to queue + * * Prior to calling this, the producer should've obtained a message buffer * from one of the rings by calling @ref svm_msg_q_alloc_msg. * |