bonding: don't increase rx_dropped after processing LACPDUs
Since commit 3aba891d, bonding processes LACP frames (802.3ad
mode) with bond_handle_frame(). Currently a copy of the skb is
made and the original is left to be processed by other
rx_handlers and the rest of the network stack by returning
RX_HANDLER_ANOTHER. As there is no protocol handler for
PKT_TYPE_LACPDU, the frame is dropped and dev->rx_dropped
increased.
Fix this by making bond_handle_frame() return RX_HANDLER_CONSUMED
if bonding has processed the LACP frame.
Signed-off-by: Jiri Bohac <jbohac@suse.cz>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index 62d2409..bc13b3d 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -1444,8 +1444,9 @@
struct sk_buff *skb = *pskb;
struct slave *slave;
struct bonding *bond;
- void (*recv_probe)(struct sk_buff *, struct bonding *,
+ int (*recv_probe)(struct sk_buff *, struct bonding *,
struct slave *);
+ int ret = RX_HANDLER_ANOTHER;
skb = skb_share_check(skb, GFP_ATOMIC);
if (unlikely(!skb))
@@ -1464,8 +1465,12 @@
struct sk_buff *nskb = skb_clone(skb, GFP_ATOMIC);
if (likely(nskb)) {
- recv_probe(nskb, bond, slave);
+ ret = recv_probe(nskb, bond, slave);
dev_kfree_skb(nskb);
+ if (ret == RX_HANDLER_CONSUMED) {
+ consume_skb(skb);
+ return ret;
+ }
}
}
@@ -1487,7 +1492,7 @@
memcpy(eth_hdr(skb)->h_dest, bond->dev->dev_addr, ETH_ALEN);
}
- return RX_HANDLER_ANOTHER;
+ return ret;
}
/* enslave device <slave> to bond device <master> */
@@ -2723,7 +2728,7 @@
}
}
-static void bond_arp_rcv(struct sk_buff *skb, struct bonding *bond,
+static int bond_arp_rcv(struct sk_buff *skb, struct bonding *bond,
struct slave *slave)
{
struct arphdr *arp;
@@ -2731,7 +2736,7 @@
__be32 sip, tip;
if (skb->protocol != __cpu_to_be16(ETH_P_ARP))
- return;
+ return RX_HANDLER_ANOTHER;
read_lock(&bond->lock);
@@ -2776,6 +2781,7 @@
out_unlock:
read_unlock(&bond->lock);
+ return RX_HANDLER_ANOTHER;
}
/*