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authorFlorin Coras <fcoras@cisco.com>2018-11-01 11:23:03 -0700
committerMarco Varlese <marco.varlese@suse.de>2018-11-02 08:06:46 +0000
commitbe72ae6149a432899698a887b1820cf5c9d9456f (patch)
treee88cc5bbbcccaee305ef21ec040a6331c643e780 /src/vnet/tcp/tcp.c
parentbf9f02cd395387bc596f1dab5e3566f6c5573eda (diff)
tcp: minimize use of tls
Also propagate tcp worker context instead of retrieving it multiple times. Change-Id: I7b273b981826b37783566d0172a64cd6957f3b33 Signed-off-by: Florin Coras <fcoras@cisco.com>
Diffstat (limited to 'src/vnet/tcp/tcp.c')
-rw-r--r--src/vnet/tcp/tcp.c50
1 files changed, 20 insertions, 30 deletions
diff --git a/src/vnet/tcp/tcp.c b/src/vnet/tcp/tcp.c
index bdf9c7af608..1726355f0e3 100644
--- a/src/vnet/tcp/tcp.c
+++ b/src/vnet/tcp/tcp.c
@@ -546,7 +546,7 @@ tcp_init_snd_vars (tcp_connection_t * tc)
* handshake may make it look as if time has flown in the opposite
* direction for us.
*/
- tcp_set_time_now (vlib_get_thread_index ());
+ tcp_set_time_now (tcp_get_worker (vlib_get_thread_index ()));
time_now = tcp_time_now ();
tc->iss = random_u32 (&time_now);
@@ -1113,12 +1113,12 @@ tcp_session_tx_fifo_offset (transport_connection_t * trans_conn)
static void
tcp_update_time (f64 now, u8 thread_index)
{
- tcp_set_time_now (thread_index);
- tw_timer_expire_timers_16t_2w_512sl (&tcp_main.
- wrk_ctx[thread_index].timer_wheel,
- now);
- tcp_do_fastretransmits (thread_index);
- tcp_flush_frames_to_output (thread_index);
+ tcp_worker_ctx_t *wrk = tcp_get_worker (thread_index);
+
+ tcp_set_time_now (wrk);
+ tw_timer_expire_timers_16t_2w_512sl (&wrk->timer_wheel, now);
+ tcp_do_fastretransmits (wrk);
+ tcp_flush_frames_to_output (wrk);
}
static u32
@@ -1291,13 +1291,12 @@ tcp_initialize_timer_wheels (tcp_main_t * tm)
static clib_error_t *
tcp_main_enable (vlib_main_t * vm)
{
- tcp_main_t *tm = vnet_get_tcp_main ();
vlib_thread_main_t *vtm = vlib_get_thread_main ();
+ u32 num_threads, n_workers, prealloc_conn_per_wrk;
+ tcp_connection_t *tc __attribute__ ((unused));
+ tcp_main_t *tm = vnet_get_tcp_main ();
clib_error_t *error = 0;
- u32 num_threads;
int thread;
- tcp_connection_t *tc __attribute__ ((unused));
- u32 preallocated_connections_per_thread;
if ((error = vlib_call_init_function (vm, ip_main_init)))
return error;
@@ -1320,27 +1319,11 @@ tcp_main_enable (vlib_main_t * vm)
num_threads = 1 /* main thread */ + vtm->n_threads;
vec_validate (tm->connections, num_threads - 1);
vec_validate (tm->wrk_ctx, num_threads - 1);
+ n_workers = num_threads == 1 ? 1 : vtm->n_threads;
+ prealloc_conn_per_wrk = tm->preallocated_connections / n_workers;
- /*
- * Preallocate connections. Assume that thread 0 won't
- * use preallocated threads when running multi-core
- */
- if (num_threads == 1)
+ for (thread = 0; thread < num_threads; thread++)
{
- thread = 0;
- preallocated_connections_per_thread = tm->preallocated_connections;
- }
- else
- {
- thread = 1;
- preallocated_connections_per_thread =
- tm->preallocated_connections / (num_threads - 1);
- }
- for (; thread < num_threads; thread++)
- {
- if (preallocated_connections_per_thread)
- pool_init_fixed (tm->connections[thread],
- preallocated_connections_per_thread);
vec_validate (tm->wrk_ctx[thread].pending_fast_rxt, 0);
vec_validate (tm->wrk_ctx[thread].ongoing_fast_rxt, 0);
vec_validate (tm->wrk_ctx[thread].postponed_fast_rxt, 0);
@@ -1348,6 +1331,13 @@ tcp_main_enable (vlib_main_t * vm)
vec_reset_length (tm->wrk_ctx[thread].ongoing_fast_rxt);
vec_reset_length (tm->wrk_ctx[thread].postponed_fast_rxt);
tm->wrk_ctx[thread].vm = vlib_mains[thread];
+
+ /*
+ * Preallocate connections. Assume that thread 0 won't
+ * use preallocated threads when running multi-core
+ */
+ if ((thread > 0 || num_threads == 1) && prealloc_conn_per_wrk)
+ pool_init_fixed (tm->connections[thread], prealloc_conn_per_wrk);
}
/*