Administratively shutting down port channel will remove the ports fro…

…m trunk in the hardware and thereby traffic stops forwarding. sonic-net#1771

src/libteam/0013-teamd-lacp-port-admin-down-recv-not-processing.patch

@@ -0,0 +1,25 @@
+diff --git a/teamd/teamd_runner_lacp.c b/teamd/teamd_runner_lacp.c
+index 5fa026a..5f4ba75 100644
+--- a/teamd/teamd_runner_lacp.c
++++ b/teamd/teamd_runner_lacp.c
+@@ -1179,12 +1179,20 @@ static int lacpdu_recv(struct lacp_port *lacp_port)
+ 	struct lacpdu lacpdu;
+ 	struct sockaddr_ll ll_from;
+ 	int err;
++	bool admin_state;
+
+ 	err = teamd_recvfrom(lacp_port->sock, &lacpdu, sizeof(lacpdu), 0,
+ 			     (struct sockaddr *) &ll_from, sizeof(ll_from));
+ 	if (err <= 0)
+ 		return err;
+
++        admin_state = team_get_ifinfo_admin_state(lacp_port->ctx->ifinfo);
++        if (!admin_state) {
++                teamd_log_info("%s received PDU in admin down state.",
++                       lacp_port->tdport->ifname);
++                return 0;
++        }
++
+ 	return lacpdu_process(lacp_port, &lacpdu);
+ }
+

src/libteam/series

@@ -7,3 +7,4 @@
 0010-teamd-lacp-update-port-state-according-to-partners-sy.patch
 0011-libteam-resynchronize-ifinfo-after-lost-RTNLGRP_LINK-.patch
 0012-teamd-do-not-process-lacpdu-before-the-port-ifinfo-i.patch
+0013-teamd-lacp-port-admin-down-recv-not-processing.patch