A problem is found that we are looking for route basing a bonding device and
deal with path MTU there: The path MTU is set to the active slave device, not
the bonding master.
The patch tries to fix the issue by letting build_skb_flow_key() take care
of the transition of device index from bonding slave to the master.
Signed-off-by: Wengang Wang <wen.gang.w...@oracle.com>
---
net/ipv4/route.c | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 85f184e..3053f10 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -523,11 +523,20 @@ static void build_skb_flow_key(struct flowi4 *fl4, const
struct sk_buff *skb,
const struct sock *sk)
{
const struct iphdr *iph = ip_hdr(skb);
- int oif = skb->dev->ifindex;
+ int oif;
+ struct net_device *master = NULL;
+
u8 tos = RT_TOS(iph->tos);
u8 prot = iph->protocol;
u32 mark = skb->mark;
+ if (skb->dev->flags & IFF_SLAVE)
+ master = netdev_master_upper_dev_get(skb->dev);
+ if (master)
+ oif = master->ifindex;
+ else
+ oif = skb->dev->ifindex;
+
__build_flow_key(fl4, sk, iph, oif, tos, prot, mark, 0);
}
--
2.1.0
--
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