From 3871bd3a07dfc775c29ea333d10c05ced2fea80e Mon Sep 17 00:00:00 2001 From: liuyacan Date: Tue, 29 Jun 2021 16:45:11 +0800 Subject: tcp: add ACK flag to RST packet According to RFC 793, the ACK control bit is always sent once the connection is established. Type: fix Signed-off-by: liuyacan Change-Id: Id0fe19114a0cc468dbce4c0938b345c2ac339e73 --- src/vnet/tcp/tcp_output.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'src/vnet/tcp/tcp_output.c') diff --git a/src/vnet/tcp/tcp_output.c b/src/vnet/tcp/tcp_output.c index 0ba349c2a62..5690db02ee2 100644 --- a/src/vnet/tcp/tcp_output.c +++ b/src/vnet/tcp/tcp_output.c @@ -766,7 +766,7 @@ 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 = tc->rcv_wnd >> tc->rcv_wscale; - flags = TCP_FLAG_RST; + flags = TCP_FLAG_RST | TCP_FLAG_ACK; 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, advertise_wnd); -- cgit 1.2.3-korg