diff options
| author |   Florin Coras <fcoras@cisco.com> | 2019-10-30 19:22:51 -0700 |
|---|---|---|
| committer |   Dave Barach <openvpp@barachs.net> | 2019-10-31 16:52:24 +0000 |
| commit | 45b7973dddc9f1b50d7f20cc1abe150b2ad9931f (patch) | |
| tree | 47ae819f40dcd0fbdf6561e7ab64df66fa60162e /src | |
| parent | ba13c3b3695cb4758848d856174b725afcc7cdb8 (diff) | |
session: avoid double dispatch of new events
Type: fix
Avoid re-dispatching new events if they've just been added to the old
events linked list.
Change-Id: Ie5d0b799eae6cebb118d97204e5111eb194c0b8e
Signed-off-by: Florin Coras <fcoras@cisco.com>
Diffstat (limited to 'src')
| -rw-r--r-- | src/vnet/session/session_node.c | 31 |
1 files changed, 17 insertions, 14 deletions
diff --git a/src/vnet/session/session_node.c b/src/vnet/session/session_node.c index 4f0251bc3f6..b4b384fc617 100644 --- a/src/vnet/session/session_node.c +++ b/src/vnet/session/session_node.c @@ -1293,6 +1293,8 @@ session_queue_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node, */ new_he = pool_elt_at_index (wrk->event_elts, wrk->new_head); + old_he = pool_elt_at_index (wrk->event_elts, wrk->old_head); + old_ti = clib_llist_prev_index (old_he, evt_list); /* *INDENT-OFF* */ clib_llist_foreach_safe (wrk->event_elts, evt_list, new_he, elt, ({ @@ -1314,25 +1316,26 @@ session_queue_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node, /* *INDENT-ON* */ /* - * Handle the old io events + * Handle the old io events, if we had any prior to processing the new ones */ - old_he = pool_elt_at_index (wrk->event_elts, wrk->old_head); - old_ti = clib_llist_prev_index (old_he, evt_list); - - while (n_tx_packets < VLIB_FRAME_SIZE - && !clib_llist_is_empty (wrk->event_elts, evt_list, old_he)) + if (old_ti != wrk->old_head) { - clib_llist_index_t ei; + old_he = pool_elt_at_index (wrk->event_elts, wrk->old_head); + while (n_tx_packets < VLIB_FRAME_SIZE) + { + clib_llist_index_t ei; - clib_llist_pop_first (wrk->event_elts, evt_list, elt, old_he); - ei = clib_llist_entry_index (wrk->event_elts, elt); - session_event_dispatch_io (wrk, node, elt, thread_index, &n_tx_packets); + clib_llist_pop_first (wrk->event_elts, evt_list, elt, old_he); + ei = clib_llist_entry_index (wrk->event_elts, elt); + session_event_dispatch_io (wrk, node, elt, thread_index, + &n_tx_packets); - old_he = pool_elt_at_index (wrk->event_elts, wrk->old_head); - if (ei == old_ti) - break; - }; + old_he = pool_elt_at_index (wrk->event_elts, wrk->old_head); + if (ei == old_ti) + break; + }; + } if (vec_len (wrk->pending_tx_buffers)) session_flush_pending_tx_buffers (wrk, node); |