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authorRoopa Prabhu <roopa@cumulusnetworks.com>2015-09-15 14:44:29 -0700
committerDavid S. Miller <davem@davemloft.net>2015-09-15 15:03:57 -0700
commitd64f69b0373a7d0bcec8b5da7712977518a8f42b (patch)
tree046d2d594dd93ad4b8654cfed864d5c978146f2e /net/core/rtnetlink.c
parentdaf158d0d544cec80b7b30deff8cfc59a6e17610 (diff)
downloadlinux-d64f69b0373a7d0bcec8b5da7712977518a8f42b.tar.bz2
rtnetlink: catch -EOPNOTSUPP errors from ndo_bridge_getlink
problem reported: kernel 4.1.3 ------------ # bridge vlan port vlan ids eth0 1 PVID Egress Untagged 90 91 92 93 94 95 96 97 98 99 100 vmbr0 1 PVID Egress Untagged 94 kernel 4.2 ----------- # bridge vlan port vlan ids ndo_bridge_getlink can return -EOPNOTSUPP when an interfaces ndo_bridge_getlink op is set to switchdev_port_bridge_getlink and CONFIG_SWITCHDEV is not defined. This today can happen to bond, rocker and team devices. This patch adds -EOPNOTSUPP checks after calls to ndo_bridge_getlink. Fixes: 85fdb956726ff2a ("switchdev: cut over to new switchdev_port_bridge_getlink") Reported-by: Alexandre DERUMIER <aderumier@odiso.com> Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/rtnetlink.c')
-rw-r--r--net/core/rtnetlink.c26
1 files changed, 16 insertions, 10 deletions
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index a466821d1441..0ec48403ed68 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -3047,6 +3047,7 @@ static int rtnl_bridge_getlink(struct sk_buff *skb, struct netlink_callback *cb)
u32 portid = NETLINK_CB(cb->skb).portid;
u32 seq = cb->nlh->nlmsg_seq;
u32 filter_mask = 0;
+ int err;
if (nlmsg_len(cb->nlh) > sizeof(struct ifinfomsg)) {
struct nlattr *extfilt;
@@ -3067,20 +3068,25 @@ static int rtnl_bridge_getlink(struct sk_buff *skb, struct netlink_callback *cb)
struct net_device *br_dev = netdev_master_upper_dev_get(dev);
if (br_dev && br_dev->netdev_ops->ndo_bridge_getlink) {
- if (idx >= cb->args[0] &&
- br_dev->netdev_ops->ndo_bridge_getlink(
- skb, portid, seq, dev, filter_mask,
- NLM_F_MULTI) < 0)
- break;
+ if (idx >= cb->args[0]) {
+ err = br_dev->netdev_ops->ndo_bridge_getlink(
+ skb, portid, seq, dev,
+ filter_mask, NLM_F_MULTI);
+ if (err < 0 && err != -EOPNOTSUPP)
+ break;
+ }
idx++;
}
if (ops->ndo_bridge_getlink) {
- if (idx >= cb->args[0] &&
- ops->ndo_bridge_getlink(skb, portid, seq, dev,
- filter_mask,
- NLM_F_MULTI) < 0)
- break;
+ if (idx >= cb->args[0]) {
+ err = ops->ndo_bridge_getlink(skb, portid,
+ seq, dev,
+ filter_mask,
+ NLM_F_MULTI);
+ if (err < 0 && err != -EOPNOTSUPP)
+ break;
+ }
idx++;
}
}