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authorDave Barach <dave@barachs.net>2020-04-28 18:00:21 -0400
committerFlorin Coras <florin.coras@gmail.com>2020-04-28 23:04:23 +0000
commit77d98382824ca211fb55fcf842931930ccfb3baa (patch)
treec0ec1d4b678577849194676bb53409f6d49e696a
parent635f5068f0802ec1fe34c998b72fb2f626259050 (diff)
vlib: add ASSERT to vlib_time_now(...)
Calling vlib_time_now (&vlib_global_main) from a worker thread is a bad mistake. ASSERT (vm->thread_index == __os_thread_index) will catch it. Type: improvement Signed-off-by: Dave Barach <dave@barachs.net> Change-Id: I55af6de84e06143f8f43adc62103b77267a7a441
-rw-r--r--src/vlib/main.h7
-rw-r--r--src/vnet/session/session.c2
-rw-r--r--src/vnet/tcp/tcp.c3
3 files changed, 10 insertions, 2 deletions
diff --git a/src/vlib/main.h b/src/vlib/main.h
index 598c3ba836f..d6b2d1f875f 100644
--- a/src/vlib/main.h
+++ b/src/vlib/main.h
@@ -290,6 +290,13 @@ void vlib_worker_loop (vlib_main_t * vm);
always_inline f64
vlib_time_now (vlib_main_t * vm)
{
+#if CLIB_DEBUG > 0
+ extern __thread uword __os_thread_index;
+#endif
+ /*
+ * Make sure folks don't pass &vlib_global_main from a worker thread.
+ */
+ ASSERT (vm->thread_index == __os_thread_index);
return clib_time_now (&vm->clib_time) + vm->time_offset;
}
diff --git a/src/vnet/session/session.c b/src/vnet/session/session.c
index 027070436fd..0956b2f9d73 100644
--- a/src/vnet/session/session.c
+++ b/src/vnet/session/session.c
@@ -1676,7 +1676,7 @@ session_manager_main_enable (vlib_main_t * vm)
wrk->new_head = clib_llist_make_head (wrk->event_elts, evt_list);
wrk->old_head = clib_llist_make_head (wrk->event_elts, evt_list);
wrk->vm = vlib_mains[i];
- wrk->last_vlib_time = vlib_time_now (vlib_mains[i]);
+ wrk->last_vlib_time = vlib_time_now (vm);
wrk->last_vlib_us_time = wrk->last_vlib_time * CLIB_US_TIME_FREQ;
vec_validate (wrk->session_to_enqueue, smm->last_transport_proto_type);
diff --git a/src/vnet/tcp/tcp.c b/src/vnet/tcp/tcp.c
index df3d61db48d..3703a4aa358 100644
--- a/src/vnet/tcp/tcp.c
+++ b/src/vnet/tcp/tcp.c
@@ -1258,13 +1258,14 @@ tcp_expired_timers_dispatch (u32 * expired_timers)
static void
tcp_initialize_timer_wheels (tcp_main_t * tm)
{
+ vlib_main_t *vm = vlib_get_main ();
tw_timer_wheel_16t_2w_512sl_t *tw;
/* *INDENT-OFF* */
foreach_vlib_main (({
tw = &tm->wrk_ctx[ii].timer_wheel;
tw_timer_wheel_init_16t_2w_512sl (tw, tcp_expired_timers_dispatch,
TCP_TIMER_TICK, ~0);
- tw->last_run_time = vlib_time_now (this_vlib_main);
+ tw->last_run_time = vlib_time_now (vm);
}));
/* *INDENT-ON* */
}