tests: improve packet checksum functions

[vpp.git] / src / vnet / tcp / tcp.c

diff --git a/src/vnet/tcp/tcp.c b/src/vnet/tcp/tcp.c
index 62267bb..c0445b9 100644 (file)
--- a/src/vnet/tcp/tcp.c
+++ b/src/vnet/tcp/tcp.c
@@ -71,6 +71,10 @@ tcp_add_del_adjacency (tcp_connection_t * tc, u8 is_add)
 static void
 tcp_cc_init (tcp_connection_t * tc)
 {
+  /* As per RFC 6582 initialize "recover" to iss */
+  if (tcp_opts_sack_permitted (&tc->rcv_opts))
+    tc->snd_congestion = tc->iss;
+
   tc->cc_algo->init (tc);
 }
 
@@ -108,7 +112,7 @@ tcp_cc_algo_new_type (const tcp_cc_algorithm_t * vft)
 }
 
 static u32
-tcp_connection_bind (u32 session_index, transport_endpoint_t * lcl)
+tcp_connection_bind (u32 session_index, transport_endpoint_cfg_t *lcl)
 {
   tcp_main_t *tm = &tcp_main;
   tcp_connection_t *listener;
@@ -143,7 +147,7 @@ tcp_connection_bind (u32 session_index, transport_endpoint_t * lcl)
 }
 
 static u32
-tcp_session_bind (u32 session_index, transport_endpoint_t * tep)
+tcp_session_bind (u32 session_index, transport_endpoint_cfg_t *tep)
 {
   return tcp_connection_bind (session_index, tep);
 }
@@ -184,8 +188,7 @@ tcp_session_get_listener (u32 listener_index)
 static tcp_connection_t *
 tcp_half_open_connection_alloc (void)
 {
-  ASSERT (vlib_get_thread_index () == 0);
-  return tcp_connection_alloc (0);
+  return tcp_connection_alloc (transport_cl_thread ());
 }
 
 /**
@@ -195,7 +198,8 @@ tcp_half_open_connection_alloc (void)
 static void
 tcp_half_open_connection_free (tcp_connection_t * tc)
 {
-  ASSERT (vlib_get_thread_index () == 0);
+  ASSERT (vlib_get_thread_index () == tc->c_thread_index ||
+         vlib_thread_is_main_w_barrier ());
   return tcp_connection_free (tc);
 }
 
@@ -236,8 +240,8 @@ tcp_connection_cleanup (tcp_connection_t * tc)
 
   /* Cleanup local endpoint if this was an active connect */
   if (!(tc->cfg_flags & TCP_CFG_F_NO_ENDPOINT))
-    transport_endpoint_cleanup (TRANSPORT_PROTO_TCP, &tc->c_lcl_ip,
-                               tc->c_lcl_port);
+    transport_release_local_endpoint (TRANSPORT_PROTO_TCP, &tc->c_lcl_ip,
+                                     tc->c_lcl_port);
 
   /* Check if connection is not yet fully established */
   if (tc->state == TCP_STATE_SYN_SENT)
@@ -289,7 +293,7 @@ tcp_connection_alloc (u8 thread_index)
   tcp_worker_ctx_t *wrk = tcp_get_worker (thread_index);
   tcp_connection_t *tc;
 
-  pool_get (wrk->connections, tc);
+  pool_get_aligned_safe (wrk->connections, tc, CLIB_CACHE_LINE_BYTES);
   clib_memset (tc, 0, sizeof (*tc));
   tc->c_c_index = tc - wrk->connections;
   tc->c_thread_index = thread_index;
@@ -306,12 +310,12 @@ tcp_connection_alloc_w_base (u8 thread_index, tcp_connection_t **base)
   if ((*base)->c_thread_index == thread_index)
     {
       u32 base_index = (*base)->c_c_index;
-      pool_get (wrk->connections, tc);
+      pool_get_aligned_safe (wrk->connections, tc, CLIB_CACHE_LINE_BYTES);
       *base = tcp_connection_get (base_index, thread_index);
     }
   else
     {
-      pool_get (wrk->connections, tc);
+      pool_get_aligned_safe (wrk->connections, tc, CLIB_CACHE_LINE_BYTES);
     }
   clib_memcpy_fast (tc, *base, sizeof (*tc));
   tc->c_c_index = tc - wrk->connections;
@@ -702,7 +706,13 @@ tcp_init_snd_vars (tcp_connection_t * tc)
   tcp_update_time_now (tcp_get_worker (vlib_get_thread_index ()));
 
   tcp_init_rcv_mss (tc);
-  tc->iss = tcp_generate_random_iss (tc);
+  /*
+   * In special case of early-kill of timewait socket, the iss will already
+   * be initialized to ensure it is greater than the last incarnation of the
+   * connection. see syn_during_timewait() for more details.
+   */
+  if (!tc->iss)
+    tc->iss = tcp_generate_random_iss (tc);
   tc->snd_una = tc->iss;
   tc->snd_nxt = tc->iss + 1;
   tc->srtt = 0.1 * THZ;                /* 100 ms */
@@ -763,6 +773,7 @@ tcp_alloc_custom_local_endpoint (tcp_main_t * tm, ip46_address_t * lcl_addr,
       index = tm->last_v4_addr_rotor++;
       if (tm->last_v4_addr_rotor >= vec_len (tcp_cfg.ip4_src_addrs))
        tm->last_v4_addr_rotor = 0;
+      clib_memset (lcl_addr, 0, sizeof (*lcl_addr));
       lcl_addr->ip4.as_u32 = tcp_cfg.ip4_src_addrs[index].as_u32;
     }
   else
@@ -831,7 +842,8 @@ tcp_session_open (transport_endpoint_cfg_t * rmt)
   /* The other connection vars will be initialized after SYN ACK */
   tcp_connection_timers_init (tc);
   tc->mss = rmt->mss;
-  tc->sw_if_index = rmt->peer.sw_if_index;
+  if (rmt->peer.sw_if_index != ENDPOINT_INVALID_INDEX)
+    tc->sw_if_index = rmt->peer.sw_if_index;
   tc->next_node_index = rmt->next_node_index;
   tc->next_node_opaque = rmt->next_node_opaque;
 
@@ -1430,7 +1442,8 @@ tcp_expired_timers_dispatch (u32 * expired_timers)
 
   clib_fifo_add (wrk->pending_timers, expired_timers, n_expired);
 
-  max_loops = clib_max (1, 0.5 * TCP_TIMER_TICK * wrk->vm->loops_per_second);
+  max_loops =
+    clib_max ((u32) 0.5 * TCP_TIMER_TICK * wrk->vm->loops_per_second, 1);
   max_per_loop = clib_max ((n_left + n_expired) / max_loops, 10);
   max_per_loop = clib_min (max_per_loop, VLIB_FRAME_SIZE);
   wrk->max_timers_per_loop = clib_max (n_left ? wrk->max_timers_per_loop : 0,