From: Thomas Falcon <tlfalcon@linux.ibm.com>
Date: Fri, 7 Jun 2019 21:03:54 +0000 (-0500)
Subject: ibmvnic: Refresh device multicast list after reset
X-Git-Tag: v5.1.18~98
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0c21c3ab0e54cf608b641290e69f943fd0f1423d;p=thirdparty%2Fkernel%2Fstable.git

ibmvnic: Refresh device multicast list after reset

[ Upstream commit be32a24372cf162e825332da1a7ccef058d4f20b ]

It was observed that multicast packets were no longer received after
a device reset.  The fix is to resend the current multicast list to
the backing device after recovery.

Signed-off-by: Thomas Falcon <tlfalcon@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c
index 71bf895409a1e..664e52fa79196 100644
--- a/drivers/net/ethernet/ibm/ibmvnic.c
+++ b/drivers/net/ethernet/ibm/ibmvnic.c
@@ -1851,6 +1851,9 @@ static int do_reset(struct ibmvnic_adapter *adapter,
 		return 0;
 	}
 
+	/* refresh device's multicast list */
+	ibmvnic_set_multi(netdev);
+
 	/* kick napi */
 	for (i = 0; i < adapter->req_rx_queues; i++)
 		napi_schedule(&adapter->napi[i]);