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authorPaolo Abeni <pabeni@redhat.com>2018-11-07 14:38:32 +0300
committerDavid S. Miller <davem@davemloft.net>2018-11-08 03:23:05 +0300
commit80bde363f9a43d942e404821b966e362131cd0ca (patch)
treea2458f08d28033a2fe10be1af80fc1fe3c42cf07 /net/ipv6/ip6_input.c
parent68cb7d531e6a87250a51b8a4ee1c79b3445aeff3 (diff)
downloadlinux-80bde363f9a43d942e404821b966e362131cd0ca.tar.xz
ipv6: factor out protocol delivery helper
So that we can re-use it at the UDP level in the next patch rfc v3 -> v1: - add the helper declaration into the ipv6 header Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/ip6_input.c')
-rw-r--r--net/ipv6/ip6_input.c28
1 files changed, 16 insertions, 12 deletions
diff --git a/net/ipv6/ip6_input.c b/net/ipv6/ip6_input.c
index df58e1100226..3c06cc9e9b79 100644
--- a/net/ipv6/ip6_input.c
+++ b/net/ipv6/ip6_input.c
@@ -319,28 +319,26 @@ void ipv6_list_rcv(struct list_head *head, struct packet_type *pt,
/*
* Deliver the packet to the host
*/
-
-
-static int ip6_input_finish(struct net *net, struct sock *sk, struct sk_buff *skb)
+void ip6_protocol_deliver_rcu(struct net *net, struct sk_buff *skb, int nexthdr,
+ bool have_final)
{
const struct inet6_protocol *ipprot;
struct inet6_dev *idev;
unsigned int nhoff;
- int nexthdr;
bool raw;
- bool have_final = false;
/*
* Parse extension headers
*/
- rcu_read_lock();
resubmit:
idev = ip6_dst_idev(skb_dst(skb));
- if (!pskb_pull(skb, skb_transport_offset(skb)))
- goto discard;
nhoff = IP6CB(skb)->nhoff;
- nexthdr = skb_network_header(skb)[nhoff];
+ if (!have_final) {
+ if (!pskb_pull(skb, skb_transport_offset(skb)))
+ goto discard;
+ nexthdr = skb_network_header(skb)[nhoff];
+ }
resubmit_final:
raw = raw6_local_deliver(skb, nexthdr);
@@ -423,13 +421,19 @@ resubmit_final:
consume_skb(skb);
}
}
- rcu_read_unlock();
- return 0;
+ return;
discard:
__IP6_INC_STATS(net, idev, IPSTATS_MIB_INDISCARDS);
- rcu_read_unlock();
kfree_skb(skb);
+}
+
+static int ip6_input_finish(struct net *net, struct sock *sk, struct sk_buff *skb)
+{
+ rcu_read_lock();
+ ip6_protocol_deliver_rcu(net, skb, 0, false);
+ rcu_read_unlock();
+
return 0;
}