zebra: increase netlink receive buffer size

Signed-off-by: Jakub Urbańczyk <xthaid@gmail.com>

diff --git a/zebra/kernel_netlink.c b/zebra/kernel_netlink.c
index 16c94b7482449c76879d1409e511d0922679f159..ad0d4bf56bbba3ae5e31deb5b188bce158f1bbc2 100644 (file)
--- a/zebra/kernel_netlink.c
+++ b/zebra/kernel_netlink.c
@@ -1453,6 +1453,15 @@ void kernel_init(struct zebra_ns *zns)
        if (ret < 0)
                zlog_notice("Registration for extended dp ACK failed : %d %s",
                            errno, safe_strerror(errno));
+
+       /*
+        * Trim off the payload of the original netlink message in the
+        * acknowledgment. This option is available since Linux 4.2, so if
+        * setsockopt fails, ignore the error.
+        */
+       one = 1;
+       ret = setsockopt(zns->netlink_dplane.sock, SOL_NETLINK, NETLINK_CAP_ACK,
+                        &one, sizeof(one));
 #endif
 
        /* Register kernel socket. */
@@ -1469,8 +1478,11 @@ void kernel_init(struct zebra_ns *zns)
                         zns->netlink_dplane.name, safe_strerror(errno), errno);
 
        /* Set receive buffer size if it's set from command line */
-       if (nl_rcvbufsize)
+       if (nl_rcvbufsize) {
                netlink_recvbuf(&zns->netlink, nl_rcvbufsize);
+               netlink_recvbuf(&zns->netlink_cmd, nl_rcvbufsize);
+               netlink_recvbuf(&zns->netlink_dplane, nl_rcvbufsize);
+       }
 
        netlink_install_filter(zns->netlink.sock,
                               zns->netlink_cmd.snl.nl_pid,