diff options
| author | Rick Jones <rick.jones2@hp.com> | 2014-11-18 01:04:29 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-11-18 23:28:28 +0300 |
| commit | e3e3217029a35c579bf100998b43976d0b1cb8d7 (patch) | |
| tree | dc2e5073002588cea3bb600e9df7d8de00359d86 /net/ipv6 | |
| parent | 54aeba7f06323e04d59a6053ee3c6023079667b2 (diff) | |
| download | linux-e3e3217029a35c579bf100998b43976d0b1cb8d7.tar.xz | |
icmp: Remove some spurious dropped packet profile hits from the ICMP path
If icmp_rcv() has successfully processed the incoming ICMP datagram, we
should use consume_skb() rather than kfree_skb() because a hit on the likes
of perf -e skb:kfree_skb is not called-for.
Signed-off-by: Rick Jones <rick.jones2@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6')
| -rw-r--r-- | net/ipv6/icmp.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/net/ipv6/icmp.c b/net/ipv6/icmp.c index 092934032077..39b3ff97a504 100644 --- a/net/ipv6/icmp.c +++ b/net/ipv6/icmp.c @@ -679,6 +679,7 @@ static int icmpv6_rcv(struct sk_buff *skb) const struct in6_addr *saddr, *daddr; struct icmp6hdr *hdr; u8 type; + bool success = false; if (!xfrm6_policy_check(NULL, XFRM_POLICY_IN, skb)) { struct sec_path *sp = skb_sec_path(skb); @@ -726,7 +727,7 @@ static int icmpv6_rcv(struct sk_buff *skb) break; case ICMPV6_ECHO_REPLY: - ping_rcv(skb); + success = ping_rcv(skb); break; case ICMPV6_PKT_TOOBIG: @@ -790,7 +791,14 @@ static int icmpv6_rcv(struct sk_buff *skb) icmpv6_notify(skb, type, hdr->icmp6_code, hdr->icmp6_mtu); } - kfree_skb(skb); + /* until the v6 path can be better sorted assume failure and + * preserve the status quo behaviour for the rest of the paths to here + */ + if (success) + consume_skb(skb); + else + kfree_skb(skb); + return 0; csum_error: |