From: Michael Brown <mcb30@ipxe.org>
Date: Sat, 30 Jun 2012 17:59:09 +0000 (+0100)
Subject: [tcp] Use a zero window size for RST packets
X-Git-Tag: v1.20.1~1732
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=49ac629821dedb8b27bb8f03e1e6e7d5d621ced6;p=thirdparty%2Fipxe.git

[tcp] Use a zero window size for RST packets

Signed-off-by: Michael Brown <mcb30@ipxe.org>
---

diff --git a/src/net/tcp.c b/src/net/tcp.c
index b30fb1b0a..3cd357fca 100644
--- a/src/net/tcp.c
+++ b/src/net/tcp.c
@@ -714,7 +714,7 @@ static int tcp_xmit_reset ( struct tcp_connection *tcp,
 	tcphdr->ack = in_tcphdr->seq;
 	tcphdr->hlen = ( ( sizeof ( *tcphdr ) / 4 ) << 4 );
 	tcphdr->flags = ( TCP_RST | TCP_ACK );
-	tcphdr->win = htons ( TCP_MAX_WINDOW_SIZE );
+	tcphdr->win = htons ( 0 );
 	tcphdr->csum = tcpip_chksum ( iobuf->data, iob_len ( iobuf ) );
 
 	/* Dump header */