From c3891fa2543cbab26093f5e425b8a50cd6837f16 Mon Sep 17 00:00:00 2001 From: Gao Feng Date: Tue, 22 Nov 2016 09:54:36 +0800 Subject: [PATCH] driver: macvlan: Check if need rollback multicast setting in macvlan_open When dev_set_promiscuity failed in macvlan_open, it always invokes dev_set_allmulti without checking if necessary. Now check the IFF_ALLMULTI flag firstly before rollback the multicast setting in the error handler. Signed-off-by: Gao Feng Signed-off-by: David S. Miller --- drivers/net/macvlan.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/macvlan.c b/drivers/net/macvlan.c index d2d6f12a112f..26d6f0bbe14b 100644 --- a/drivers/net/macvlan.c +++ b/drivers/net/macvlan.c @@ -623,7 +623,8 @@ hash_add: return 0; clear_multi: - dev_set_allmulti(lowerdev, -1); + if (dev->flags & IFF_ALLMULTI) + dev_set_allmulti(lowerdev, -1); del_unicast: dev_uc_del(lowerdev, dev->dev_addr); out: -- 2.20.1