diff options
| author | Wei Wang <weiwan@google.com> | 2017-06-17 19:42:24 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-06-18 04:53:59 +0200 |
| commit | 1758fd4688eb92c796e75bdb1d256dc558ef9581 (patch) | |
| tree | 3d4aab23a22af1426d5fdea0bed238fa2f255caf /net/ipv6/ip6_output.c | |
| parent | Merge tag 'mlx5-updates-2017-06-16' of git://git.kernel.org/pub/scm/linux/ker... (diff) | |
| download | linux-1758fd4688eb92c796e75bdb1d256dc558ef9581.tar.xz linux-1758fd4688eb92c796e75bdb1d256dc558ef9581.zip | |
ipv6: remove unnecessary dst_hold() in ip6_fragment()
In ipv6 tx path, rcu_read_lock() is taken so that dst won't get freed
during the execution of ip6_fragment(). Hence, no need to hold dst in
it.
Signed-off-by: Wei Wang <weiwan@google.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/ip6_output.c')
| -rw-r--r-- | net/ipv6/ip6_output.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c index 8b8efb0e55bf..5baa6fab4b97 100644 --- a/net/ipv6/ip6_output.c +++ b/net/ipv6/ip6_output.c @@ -698,8 +698,6 @@ int ip6_fragment(struct net *net, struct sock *sk, struct sk_buff *skb, ipv6_hdr(skb)->payload_len = htons(first_len - sizeof(struct ipv6hdr)); - dst_hold(&rt->dst); - for (;;) { /* Prepare header of the next frame, * before previous one went down. */ @@ -742,7 +740,6 @@ int ip6_fragment(struct net *net, struct sock *sk, struct sk_buff *skb, if (err == 0) { IP6_INC_STATS(net, ip6_dst_idev(&rt->dst), IPSTATS_MIB_FRAGOKS); - ip6_rt_put(rt); return 0; } @@ -750,7 +747,6 @@ int ip6_fragment(struct net *net, struct sock *sk, struct sk_buff *skb, IP6_INC_STATS(net, ip6_dst_idev(&rt->dst), IPSTATS_MIB_FRAGFAILS); - ip6_rt_put(rt); return err; slow_path_clean: |