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Date: Fri, 20 Jun 2008 08:55:23 +0800 From: Wang Chen <wangchen@...fujitsu.com> To: "David S. Miller" <davem@...emloft.net> CC: YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org>, NETDEV <netdev@...r.kernel.org>, Patrick McHardy <kaber@...sh.net> Subject: [PATCH net-next 5/8] ipv6: Check return of dev_set_allmulti allmulti might overflow. Commit: "netdevice: Fix promiscuity and allmulti overflow" in net-next makes dev_set_promiscuity/allmulti return error number if overflow happened. Here, we check the positive increment for allmulti to get error return. Signed-off-by: Wang Chen <wangchen@...fujitsu.com> --- net/ipv6/ip6mr.c | 6 +++++- 1 files changed, 5 insertions(+), 1 deletions(-) diff --git a/net/ipv6/ip6mr.c b/net/ipv6/ip6mr.c index 1479618..7a97566 100644 --- a/net/ipv6/ip6mr.c +++ b/net/ipv6/ip6mr.c @@ -603,6 +603,7 @@ static int mif6_add(struct mif6ctl *vifc, int mrtsock) int vifi = vifc->mif6c_mifi; struct mif_device *v = &vif6_table[vifi]; struct net_device *dev; + int err; /* Is vif busy ? */ if (MIF_EXISTS(vifi)) @@ -632,7 +633,10 @@ static int mif6_add(struct mif6ctl *vifc, int mrtsock) return -EINVAL; } - dev_set_allmulti(dev, 1); + /* Check whether allmulti overflow */ + err = dev_set_allmulti(dev, 1); + if (err) + return err; /* * Fill in the VIF structures -- 1.5.3.4 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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