From: Adriano Marto Reis <adrianomarto@gmail.com>
Date: Sat, 20 Mar 2021 23:25:13 +0000 (+1000)
Subject: pimd: marking MSDP traffic as DSCP CS6
X-Git-Tag: base_8.0~252^2
X-Git-Url: https://git.puffer.fish/?a=commitdiff_plain;h=refs%2Fpull%2F8297%2Fhead;p=mirror%2Ffrr.git

pimd: marking MSDP traffic as DSCP CS6

Configuring the sockets used to establish MSDP connections so the
packets are marked as CS6

Signed-off-by: Adriano Marto Reis <adrianomarto@gmail.com>
---

diff --git a/pimd/pim_msdp_socket.c b/pimd/pim_msdp_socket.c
index b613937f59..9c3cdb2711 100644
--- a/pimd/pim_msdp_socket.c
+++ b/pimd/pim_msdp_socket.c
@@ -35,6 +35,8 @@
 #include "pim_msdp.h"
 #include "pim_msdp_socket.h"
 
+#include "sockopt.h"
+
 /* increase socket send buffer size */
 static void pim_msdp_update_sock_send_buffer_size(int fd)
 {
@@ -194,6 +196,12 @@ int pim_msdp_sock_listen(struct pim_instance *pim)
 		return rc;
 	}
 
+	/* Set socket DSCP byte */
+	if (setsockopt_ipv4_tos(sock, IPTOS_PREC_INTERNETCONTROL)) {
+		zlog_warn("can't set sockopt IP_TOS to MSDP socket %d: %s",
+				sock, safe_strerror(errno));
+	}
+
 	/* add accept thread */
 	listener->fd = sock;
 	memcpy(&listener->su, &sin, socklen);
@@ -272,6 +280,12 @@ int pim_msdp_sock_connect(struct pim_msdp_peer *mp)
 		return rc;
 	}
 
+	/* Set socket DSCP byte */
+	if (setsockopt_ipv4_tos(mp->fd, IPTOS_PREC_INTERNETCONTROL)) {
+		zlog_warn("can't set sockopt IP_TOS to MSDP socket %d: %s",
+				mp->fd, safe_strerror(errno));
+	}
+
 	/* Connect to the remote mp. */
 	return (sockunion_connect(mp->fd, &mp->su_peer,
 				  htons(PIM_MSDP_TCP_PORT), 0));