[dpdk-stable] patch 'net/bonding: always update bonding link status' has been queued to LTS release 17.11.4

[Yongseok Koh <yskoh@mellanox.com>]

Hi,

FYI, your patch has been queued to LTS release 17.11.4

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 07/28/18. So please
shout if anyone has objections.

Thanks.

Yongseok

---
>From d4ee3056efafaca957b9d9e23c9fc8703bd1c76f Mon Sep 17 00:00:00 2001
From: Chas Williams <chas3@att.com>
Date: Thu, 17 May 2018 19:22:52 -0400
Subject: [PATCH] net/bonding: always update bonding link status

[ upstream commit 0e677a35349f316d50ba25485354363f3e65c12e ]

When the first ETH_LINK_UP slave is added to a bonding device, it is
immediately activated.  If these are polling slaves, there will be a
later link state event, when last_link_status doesn't match link_status.
But because this slave is already activated, the bonding device's link
status isn't updated.

To fix this, we always attempt to update the bonding device's link status
in the link state change callback.

Fixes: 46fb43683679 ("bond: add mode 4")

Signed-off-by: Chas Williams <chas3@att.com>
---
 drivers/net/bonding/rte_eth_bond_pmd.c | 15 ++++++---------
 1 file changed, 6 insertions(+), 9 deletions(-)

diff --git a/drivers/net/bonding/rte_eth_bond_pmd.c b/drivers/net/bonding/rte_eth_bond_pmd.c
index e19a4a3e8..0cbe08ada 100644
--- a/drivers/net/bonding/rte_eth_bond_pmd.c
+++ b/drivers/net/bonding/rte_eth_bond_pmd.c
@@ -2535,10 +2535,8 @@ bond_ethdev_lsc_event_callback(uint16_t port_id, enum rte_eth_event_type type,
 
 	rte_eth_link_get_nowait(port_id, &link);
 	if (link.link_status) {
-		if (active_pos < internals->active_slave_count) {
-			rte_spinlock_unlock(&internals->lsc_lock);
-			return rc;
-		}
+		if (active_pos < internals->active_slave_count)
+			goto link_update;
 
 		/* if no active slave ports then set this port to be primary port */
 		if (internals->active_slave_count < 1) {
@@ -2557,10 +2555,8 @@ bond_ethdev_lsc_event_callback(uint16_t port_id, enum rte_eth_event_type type,
 				internals->primary_port == port_id)
 			bond_ethdev_primary_set(internals, port_id);
 	} else {
-		if (active_pos == internals->active_slave_count) {
-			rte_spinlock_unlock(&internals->lsc_lock);
-			return rc;
-		}
+		if (active_pos == internals->active_slave_count)
+			goto link_update;
 
 		/* Remove from active slave list */
 		deactivate_slave(bonded_eth_dev, port_id);
@@ -2579,6 +2575,7 @@ bond_ethdev_lsc_event_callback(uint16_t port_id, enum rte_eth_event_type type,
 		}
 	}
 
+link_update:
 	/**
 	 * Update bonded device link properties after any change to active
 	 * slaves
@@ -2616,7 +2613,7 @@ bond_ethdev_lsc_event_callback(uint16_t port_id, enum rte_eth_event_type type,
 
 	rte_spinlock_unlock(&internals->lsc_lock);
 
-	return 0;
+	return rc;
 }
 
 static int
-- 
2.11.0