[teamd]: Fix teamd patch issues, which prevented system WR (#2321)

- What I did

Fixed vanilla teamd bug, which prevented teamd to have a correct view of kernel state. Check bug #2 from the message
Changed schema for LACP port id.
Changed severity of an error message.
Removed logic to disable warm_start_read mode, when teamd started. It didn't work in system restart mode, because interfaces were added one by one, and it's impossible to say when everything is added.

- How I did it

I've added team_refresh() on every port addition
I extract port id from the port name. Currently I support only "EthernetX" scheme. We need to add more schemes if we change port scheme.
_err -> _info
...

- How to verify it
Build the image, install on your DUT, reboot it once, then reboot it on WR mode checking LACP state on remote side. The state shouldn't flip.

Author: pavel-shirshov

src/libteam/0005-libteam-Add-warm_reboot-mode.patch

@@ -192,7 +192,7 @@ index 5c2ef56..50e5a08 100644
  			   struct teamd_port *tdport)
  {
 diff --git a/teamd/teamd_runner_lacp.c b/teamd/teamd_runner_lacp.c
-index 81324de..2a453bd 100644
+index 81324de..9e88ce0 100644
 --- a/teamd/teamd_runner_lacp.c
 +++ b/teamd/teamd_runner_lacp.c
 @@ -31,6 +31,7 @@
@@ -251,7 +251,35 @@ index 81324de..2a453bd 100644
  	return lacp_set_carrier(lacp, false);
  }
 
-@@ -994,6 +1012,13 @@ static int lacp_port_set_state(struct lacp_port *lacp_port,
+@@ -917,6 +935,18 @@ static void lacp_port_actor_system_update(struct lacp_port *lacp_port)
+ 	memcpy(actor->system, lacp_port->ctx->hwaddr, ETH_ALEN);
+ }
+ 
++static int lacp_portname_to_port_id(const char* name)
++{
++#define PORT_PREFIX "Ethernet"
++	const char* strport_id = name + sizeof(PORT_PREFIX) - 1;
++	const int port_id = atoi(strport_id);
++	if ((port_id == 0) && strcmp(strport_id, "0")) {
++		teamd_log_err("%s: Can't convert from port name to port id. Port id is equal to 0, but this is not expected", name);
++	}
++
++	return htons(port_id);
++}
++
+ static void lacp_port_actor_init(struct lacp_port *lacp_port)
+ {
+ 	struct lacpdu_info *actor = &lacp_port->actor;
+@@ -924,7 +954,7 @@ static void lacp_port_actor_init(struct lacp_port *lacp_port)
+ 	actor->system_priority = htons(lacp_port->lacp->cfg.sys_prio);
+ 	actor->key = htons(lacp_port->cfg.lacp_key);
+ 	actor->port_priority = htons(lacp_port->cfg.lacp_prio);
+-	actor->port = htons(lacp_port->tdport->ifindex);
++	actor->port = lacp_portname_to_port_id(lacp_port->tdport->ifname);
+ 	lacp_port_actor_system_update(lacp_port);
+ }
+ 
+@@ -994,6 +1024,13 @@ static int lacp_port_set_state(struct lacp_port *lacp_port,
  		break;
  	}
 
@@ -265,7 +293,7 @@ index 81324de..2a453bd 100644
  	teamd_log_info("%s: Changed port state: \"%s\" -> \"%s\"",
  		       lacp_port->tdport->ifname,
  		       lacp_port_state_name[lacp_port->state],
-@@ -1084,26 +1109,23 @@ static int lacpdu_send(struct lacp_port *lacp_port)
+@@ -1084,26 +1121,23 @@ static int lacpdu_send(struct lacp_port *lacp_port)
  	return err;
  }
 
@@ -300,7 +328,7 @@ index 81324de..2a453bd 100644
  		err = lacp_port_partner_update(lacp_port);
  		if (err)
  			return err;
-@@ -1118,7 +1140,7 @@ static int lacpdu_recv(struct lacp_port *lacp_port)
+@@ -1118,7 +1152,7 @@ static int lacpdu_recv(struct lacp_port *lacp_port)
 
  	/* Check if the other side has correct info about us */
  	if (!lacp_port->periodic_on &&
@@ -309,7 +337,7 @@ index 81324de..2a453bd 100644
  		   sizeof(struct lacpdu_info))) {
  		err = lacpdu_send(lacp_port);
  		if (err)
-@@ -1133,6 +1155,77 @@ static int lacpdu_recv(struct lacp_port *lacp_port)
+@@ -1133,6 +1167,65 @@ static int lacpdu_recv(struct lacp_port *lacp_port)
  	return 0;
  }
 
@@ -334,22 +362,10 @@ index 81324de..2a453bd 100644
 +	struct lacpdu lacpdu;
 +	int err, nitems;
 +	struct teamd_port *tdport;
-+	bool all_port_read = true;
 +
 +	/* we read saved lacpdu for the current lacp_port */
 +	lacp_port->lacpdu_read = true;
 +
-+	/* go through all current ports, if the lacp state were read
-+	   for all of them, disable warm_start_read mode */
-+	teamd_for_each_tdport(tdport, lacp_port->ctx) {
-+		struct lacp_port *it;
-+		it = lacp_port_get(lacp_port->lacp, tdport);
-+		all_port_read = all_port_read && it->lacpdu_read;
-+	}
-+
-+	if (all_port_read) /* we read lacp state for all ports */
-+		lacp_port->ctx->warm_start_read = false;
-+
 +	strcpy(filename, lacp_port->ctx->lacp_directory);
 +	if (filename[strlen(filename) - 1] != '/')
 +		strcat(filename, "/"); /* Add trailing slash if we don't have one in the filename */
@@ -379,15 +395,29 @@ index 81324de..2a453bd 100644
 +		return err;
 +	}
 +
-+	teamd_log_err("%s: LACP state was read", lacp_port->tdport->ifname);
++	teamd_log_info("%s: LACP state was read", lacp_port->tdport->ifname);
 +
 +	return lacpdu_process(lacp_port, &lacpdu);
 +}
 +
  static int lacp_callback_timeout(struct teamd_context *ctx, int events,
  				 void *priv)
  {
-@@ -1299,6 +1392,13 @@ static int lacp_port_added(struct teamd_context *ctx,
+@@ -1284,6 +1377,13 @@ static int lacp_port_added(struct teamd_context *ctx,
+ 		goto periodic_callback_del;
+ 	}
+ 
++	/* refresh ports from the kernel */
++	err = team_refresh(ctx->th);
++	if (err) {
++		teamd_log_err("%s: Team refresh failed.", tdport->ifname);
++		goto timeout_callback_del;
++	}
++
+ 	/* Newly added ports are disabled */
+ 	err = team_set_port_enabled(ctx->th, tdport->ifindex, false);
+ 	if (err) {
+@@ -1299,6 +1399,13 @@ static int lacp_port_added(struct teamd_context *ctx,
  	lacp_port_actor_init(lacp_port);
  	lacp_port_link_update(lacp_port);
 
@@ -401,7 +431,7 @@ index 81324de..2a453bd 100644
  	teamd_loop_callback_enable(ctx, LACP_SOCKET_CB_NAME, lacp_port);
  	return 0;
 
-@@ -1321,7 +1421,11 @@ static void lacp_port_removed(struct teamd_context *ctx,
+@@ -1321,7 +1428,11 @@ static void lacp_port_removed(struct teamd_context *ctx,
  {
  	struct lacp_port *lacp_port = priv;
 
@@ -414,7 +444,7 @@ index 81324de..2a453bd 100644
  	teamd_loop_callback_del(ctx, LACP_TIMEOUT_CB_NAME, lacp_port);
  	teamd_loop_callback_del(ctx, LACP_PERIODIC_CB_NAME, lacp_port);
  	teamd_loop_callback_del(ctx, LACP_SOCKET_CB_NAME, lacp_port);
-@@ -1413,6 +1517,31 @@ static void lacp_event_watch_refresh(struct teamd_context *ctx, struct teamd_por
+@@ -1413,6 +1524,31 @@ static void lacp_event_watch_refresh(struct teamd_context *ctx, struct teamd_por
  		(void) lacpdu_send(lacp_port);
  }
 
@@ -446,7 +476,7 @@ index 81324de..2a453bd 100644
  static const struct teamd_event_watch_ops lacp_event_watch_ops = {
  	.hwaddr_changed = lacp_event_watch_hwaddr_changed,
  	.port_added = lacp_event_watch_port_added,
-@@ -1420,21 +1549,38 @@ static const struct teamd_event_watch_ops lacp_event_watch_ops = {
+@@ -1420,21 +1556,38 @@ static const struct teamd_event_watch_ops lacp_event_watch_ops = {
  	.port_changed = lacp_event_watch_port_changed,
  	.admin_state_changed = lacp_event_watch_admin_state_changed,
  	.refresh = lacp_event_watch_refresh,
@@ -492,7 +522,7 @@ index 81324de..2a453bd 100644
  	return 0;
  }
 
-@@ -1946,7 +2092,7 @@ static void lacp_fini(struct teamd_context *ctx, void *priv)
+@@ -1946,7 +2099,7 @@ static void lacp_fini(struct teamd_context *ctx, void *priv)
  	teamd_state_val_unregister(ctx, &lacp_state_vg, lacp);
  	teamd_balancer_fini(lacp->tb);
  	teamd_event_watch_unregister(ctx, &lacp_event_watch_ops, lacp);