inet: refactor inet[6]_lookup functions to take skb
This is a preliminary step to allow fast socket lookup of SO_REUSEPORT
groups. Doing so with a BPF filter will require access to the
skb in question. This change plumbs the skb (and offset to payload
data) through the call stack to the listening socket lookup
implementations where it will be used in a following patch.
Signed-off-by: Craig Gallek <kraig@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/inet6_hashtables.c b/net/ipv6/inet6_hashtables.c
index 072653d..004345d 100644
--- a/net/ipv6/inet6_hashtables.c
+++ b/net/ipv6/inet6_hashtables.c
@@ -121,7 +121,9 @@
}
struct sock *inet6_lookup_listener(struct net *net,
- struct inet_hashinfo *hashinfo, const struct in6_addr *saddr,
+ struct inet_hashinfo *hashinfo,
+ struct sk_buff *skb, int doff,
+ const struct in6_addr *saddr,
const __be16 sport, const struct in6_addr *daddr,
const unsigned short hnum, const int dif)
{
@@ -177,6 +179,7 @@
EXPORT_SYMBOL_GPL(inet6_lookup_listener);
struct sock *inet6_lookup(struct net *net, struct inet_hashinfo *hashinfo,
+ struct sk_buff *skb, int doff,
const struct in6_addr *saddr, const __be16 sport,
const struct in6_addr *daddr, const __be16 dport,
const int dif)
@@ -184,7 +187,8 @@
struct sock *sk;
local_bh_disable();
- sk = __inet6_lookup(net, hashinfo, saddr, sport, daddr, ntohs(dport), dif);
+ sk = __inet6_lookup(net, hashinfo, skb, doff, saddr, sport, daddr,
+ ntohs(dport), dif);
local_bh_enable();
return sk;