diff options
Diffstat (limited to 'src/vnet/tcp/tcp_timer.h')
-rw-r--r-- | src/vnet/tcp/tcp_timer.h | 53 |
1 files changed, 24 insertions, 29 deletions
diff --git a/src/vnet/tcp/tcp_timer.h b/src/vnet/tcp/tcp_timer.h index 4668c79cabf..c0907cae1cc 100644 --- a/src/vnet/tcp/tcp_timer.h +++ b/src/vnet/tcp/tcp_timer.h @@ -17,11 +17,18 @@ #include <vnet/tcp/tcp_types.h> +static inline u8 +tcp_timer_thread_is_valid (tcp_connection_t *tc) +{ + return ((tc->c_thread_index == vlib_get_thread_index ()) || + vlib_thread_is_main_w_barrier ()); +} + always_inline void -tcp_timer_set (tcp_timer_wheel_t * tw, tcp_connection_t * tc, u8 timer_id, +tcp_timer_set (tcp_timer_wheel_t *tw, tcp_connection_t *tc, u8 timer_id, u32 interval) { - ASSERT (tc->c_thread_index == vlib_get_thread_index ()); + ASSERT (tcp_timer_thread_is_valid (tc)); ASSERT (tc->timers[timer_id] == TCP_TIMER_HANDLE_INVALID); tc->timers[timer_id] = tw_timer_start_tcp_twsl (tw, tc->c_c_index, timer_id, interval); @@ -30,7 +37,7 @@ tcp_timer_set (tcp_timer_wheel_t * tw, tcp_connection_t * tc, u8 timer_id, always_inline void tcp_timer_reset (tcp_timer_wheel_t * tw, tcp_connection_t * tc, u8 timer_id) { - ASSERT (tc->c_thread_index == vlib_get_thread_index ()); + ASSERT (tcp_timer_thread_is_valid (tc)); tc->pending_timers &= ~(1 << timer_id); if (tc->timers[timer_id] == TCP_TIMER_HANDLE_INVALID) return; @@ -43,7 +50,7 @@ always_inline void tcp_timer_update (tcp_timer_wheel_t * tw, tcp_connection_t * tc, u8 timer_id, u32 interval) { - ASSERT (tc->c_thread_index == vlib_get_thread_index ()); + ASSERT (tcp_timer_thread_is_valid (tc)); if (tc->timers[timer_id] != TCP_TIMER_HANDLE_INVALID) tw_timer_update_tcp_twsl (tw, tc->timers[timer_id], interval); else @@ -51,12 +58,19 @@ tcp_timer_update (tcp_timer_wheel_t * tw, tcp_connection_t * tc, u8 timer_id, timer_id, interval); } +always_inline u8 +tcp_timer_is_active (tcp_connection_t *tc, tcp_timers_e timer) +{ + return tc->timers[timer] != TCP_TIMER_HANDLE_INVALID || + (tc->pending_timers & (1 << timer)); +} + always_inline void tcp_retransmit_timer_set (tcp_timer_wheel_t * tw, tcp_connection_t * tc) { ASSERT (tc->snd_una != tc->snd_nxt); tcp_timer_set (tw, tc, TCP_TIMER_RETRANSMIT, - clib_max (tc->rto * TCP_TO_TIMER_TICK, 1)); + clib_max ((u32) tc->rto * TCP_TO_TIMER_TICK, 1)); } always_inline void @@ -70,20 +84,7 @@ tcp_persist_timer_set (tcp_timer_wheel_t * tw, tcp_connection_t * tc) { /* Reuse RTO. It's backed off in handler */ tcp_timer_set (tw, tc, TCP_TIMER_PERSIST, - clib_max (tc->rto * TCP_TO_TIMER_TICK, 1)); -} - -always_inline void -tcp_persist_timer_update (tcp_timer_wheel_t * tw, tcp_connection_t * tc) -{ - u32 interval; - - if (seq_leq (tc->snd_una, tc->snd_congestion + tc->burst_acked)) - interval = 1; - else - interval = clib_max (tc->rto * TCP_TO_TIMER_TICK, 1); - - tcp_timer_update (tw, tc, TCP_TIMER_PERSIST, interval); + clib_max ((u32) tc->rto * TCP_TO_TIMER_TICK, 1)); } always_inline void @@ -98,19 +99,13 @@ tcp_retransmit_timer_update (tcp_timer_wheel_t * tw, tcp_connection_t * tc) if (tc->snd_una == tc->snd_nxt) { tcp_retransmit_timer_reset (tw, tc); - if (tc->snd_wnd < tc->snd_mss) - tcp_persist_timer_update (tw, tc); + if (tc->snd_wnd < tc->snd_mss && + !tcp_timer_is_active (tc, TCP_TIMER_PERSIST)) + tcp_persist_timer_set (tw, tc); } else tcp_timer_update (tw, tc, TCP_TIMER_RETRANSMIT, - clib_max (tc->rto * TCP_TO_TIMER_TICK, 1)); -} - -always_inline u8 -tcp_timer_is_active (tcp_connection_t * tc, tcp_timers_e timer) -{ - return tc->timers[timer] != TCP_TIMER_HANDLE_INVALID - || (tc->pending_timers & (1 << timer)); + clib_max ((u32) tc->rto * TCP_TO_TIMER_TICK, 1)); } always_inline void |