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vcl: fix empty epoll returns (VPP-1453)
[vpp.git]
/
src
/
vcl
/
vppcom.c
diff --git
a/src/vcl/vppcom.c
b/src/vcl/vppcom.c
index
3f12b86
..
df4ebde
100644
(file)
--- a/
src/vcl/vppcom.c
+++ b/
src/vcl/vppcom.c
@@
-2508,6
+2508,7
@@
vppcom_epoll_wait_eventfd (vcl_worker_t * wrk, struct epoll_event *events,
u64 buf;
vec_validate (wrk->mq_events, pool_elts (wrk->mq_evt_conns));
u64 buf;
vec_validate (wrk->mq_events, pool_elts (wrk->mq_evt_conns));
+again:
n_mq_evts = epoll_wait (wrk->mqs_epfd, wrk->mq_events,
vec_len (wrk->mq_events), wait_for_time);
for (i = 0; i < n_mq_evts; i++)
n_mq_evts = epoll_wait (wrk->mqs_epfd, wrk->mq_events,
vec_len (wrk->mq_events), wait_for_time);
for (i = 0; i < n_mq_evts; i++)
@@
-2516,6
+2517,8
@@
vppcom_epoll_wait_eventfd (vcl_worker_t * wrk, struct epoll_event *events,
n_read = read (mqc->mq_fd, &buf, sizeof (buf));
vcl_epoll_wait_handle_mq (wrk, mqc->mq, events, maxevents, 0, &n_evts);
}
n_read = read (mqc->mq_fd, &buf, sizeof (buf));
vcl_epoll_wait_handle_mq (wrk, mqc->mq, events, maxevents, 0, &n_evts);
}
+ if (!n_evts && n_mq_evts > 0)
+ goto again;
return (int) n_evts;
}
return (int) n_evts;
}