c11 safe string handling support

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

diff --git a/src/vnet/tcp/tcp_output.c b/src/vnet/tcp/tcp_output.c
index f37958e..ed1c641 100644 (file)
--- a/src/vnet/tcp/tcp_output.c
+++ b/src/vnet/tcp/tcp_output.c
@@ -118,12 +118,13 @@ tcp_initial_wnd_unscaled (tcp_connection_t * tc)
 u32
 tcp_initial_window_to_advertise (tcp_connection_t * tc)
 {
+  tcp_main_t *tm = &tcp_main;
   u32 max_fifo;
 
   /* Initial wnd for SYN. Fifos are not allocated yet.
    * Use some predefined value. For SYN-ACK we still want the
    * scale to be computed in the same way */
-  max_fifo = TCP_MAX_RX_FIFO_SIZE;
+  max_fifo = tm->max_rx_fifo ? tm->max_rx_fifo : TCP_MAX_RX_FIFO_SIZE;
 
   tc->rcv_wscale = tcp_window_compute_scale (max_fifo);
   tc->rcv_wnd = tcp_initial_wnd_unscaled (tc);
@@ -598,7 +599,7 @@ tcp_make_syn (tcp_connection_t * tc, vlib_buffer_t * b)
   initial_wnd = tcp_initial_window_to_advertise (tc);
 
   /* Make and write options */
-  memset (&snd_opts, 0, sizeof (snd_opts));
+  clib_memset (&snd_opts, 0, sizeof (snd_opts));
   tcp_opts_len = tcp_make_syn_options (&snd_opts, tc->rcv_wscale);
   tcp_hdr_opts_len = tcp_opts_len + sizeof (tcp_header_t);
 
@@ -621,7 +622,7 @@ tcp_make_synack (tcp_connection_t * tc, vlib_buffer_t * b)
   tcp_header_t *th;
   u16 initial_wnd;
 
-  memset (snd_opts, 0, sizeof (*snd_opts));
+  clib_memset (snd_opts, 0, sizeof (*snd_opts));
   tcp_reuse_buffer (vm, b);
 
   initial_wnd = tcp_initial_window_to_advertise (tc);
@@ -1075,16 +1076,25 @@ tcp_send_fin (tcp_connection_t * tc)
   u32 bi;
   u8 fin_snt = 0;
 
-  tcp_retransmit_timer_force_update (tc);
-  if (PREDICT_FALSE (tcp_get_free_buffer_index (tm, &bi)))
-    return;
-  b = vlib_get_buffer (vm, bi);
-  tcp_init_buffer (vm, b);
   fin_snt = tc->flags & TCP_CONN_FINSNT;
   if (fin_snt)
     tc->snd_nxt = tc->snd_una;
+
+  if (PREDICT_FALSE (tcp_get_free_buffer_index (tm, &bi)))
+    {
+      /* Out of buffers so program fin retransmit ASAP */
+      tcp_timer_update (tc, TCP_TIMER_RETRANSMIT, 1);
+      goto post_enqueue;
+    }
+
+  tcp_retransmit_timer_force_update (tc);
+  b = vlib_get_buffer (vm, bi);
+  tcp_init_buffer (vm, b);
   tcp_make_fin (tc, b);
   tcp_enqueue_to_output_now (vm, b, bi, tc->c_is_ip4);
+  TCP_EVT_DBG (TCP_EVT_FIN_SENT, tc);
+
+post_enqueue:
   if (!fin_snt)
     {
       tc->flags |= TCP_CONN_FINSNT;
@@ -1097,7 +1107,6 @@ tcp_send_fin (tcp_connection_t * tc)
     {
       tc->snd_nxt = tc->snd_una_max;
     }
-  TCP_EVT_DBG (TCP_EVT_FIN_SENT, tc);
 }
 
 always_inline u8