tcp: avoid updating rcv wnd in resets

Type: improvement

Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: I0884bf63db57b4b4dbccf41ab64c030b3fe4dde2

diff --git a/src/vnet/tcp/tcp_output.c b/src/vnet/tcp/tcp_output.c
index d33cbdd..aff2d93 100644 (file)
--- a/src/vnet/tcp/tcp_output.c
+++ b/src/vnet/tcp/tcp_output.c
@@ -115,8 +115,6 @@ tcp_update_rcv_wnd (tcp_connection_t * tc)
   u32 available_space, wnd;
   i32 observed_wnd;
 
-  ASSERT (tc->rcv_opts.mss < transport_rx_fifo_size (&tc->connection));
-
   /*
    * Figure out how much space we have available
    */
@@ -875,7 +873,7 @@ tcp_send_reset (tcp_connection_t * tc)
 
   tc->snd_opts_len = tcp_make_options (tc, &tc->snd_opts, tc->state);
   tcp_hdr_opts_len = tc->snd_opts_len + sizeof (tcp_header_t);
-  advertise_wnd = tcp_window_to_advertise (tc, TCP_STATE_ESTABLISHED);
+  advertise_wnd = tc->rcv_wnd >> tc->rcv_wscale;
   flags = TCP_FLAG_RST;
   th = vlib_buffer_push_tcp (b, tc->c_lcl_port, tc->c_rmt_port, tc->snd_nxt,
                             tc->rcv_nxt, tcp_hdr_opts_len, flags,