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authorGerrit Renker <gerrit@erg.abdn.ac.uk>2006-11-11 01:06:49 +0300
committerDavid S. Miller <davem@sunset.davemloft.net>2006-12-03 08:22:10 +0300
commita94f723d595ee085f81b1788d18e031af7eeba91 (patch)
treece9309a5ba780429bc6e10a2c075af9c9e5b769a /net/ipv6/tcp_ipv6.c
parent6f4e5fff1e4d46714ea554fd83e44eab534e8b11 (diff)
downloadlinux-a94f723d595ee085f81b1788d18e031af7eeba91.tar.xz
[TCP]: Remove dead code in init_sequence
This removes two redundancies: 1) The test (skb->protocol == htons(ETH_P_IPV6) in tcp_v6_init_sequence() is always true, due to * tcp_v6_conn_request() is the only function calling this one * tcp_v6_conn_request() redirects all skb's with ETH_P_IP protocol to tcp_v4_conn_request() [ cf. top of tcp_v6_conn_request()] 2) The first argument, `struct sock *sk' of tcp_v{4,6}_init_sequence() is never used. Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/tcp_ipv6.c')
-rw-r--r--net/ipv6/tcp_ipv6.c19
1 files changed, 6 insertions, 13 deletions
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 06b536b47f97..9a8e690fdf7c 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -106,19 +106,12 @@ static __inline__ u16 tcp_v6_check(struct tcphdr *th, int len,
return csum_ipv6_magic(saddr, daddr, len, IPPROTO_TCP, base);
}
-static __u32 tcp_v6_init_sequence(struct sock *sk, struct sk_buff *skb)
+static __u32 tcp_v6_init_sequence(struct sk_buff *skb)
{
- if (skb->protocol == htons(ETH_P_IPV6)) {
- return secure_tcpv6_sequence_number(skb->nh.ipv6h->daddr.s6_addr32,
- skb->nh.ipv6h->saddr.s6_addr32,
- skb->h.th->dest,
- skb->h.th->source);
- } else {
- return secure_tcp_sequence_number(skb->nh.iph->daddr,
- skb->nh.iph->saddr,
- skb->h.th->dest,
- skb->h.th->source);
- }
+ return secure_tcpv6_sequence_number(skb->nh.ipv6h->daddr.s6_addr32,
+ skb->nh.ipv6h->saddr.s6_addr32,
+ skb->h.th->dest,
+ skb->h.th->source);
}
static int tcp_v6_connect(struct sock *sk, struct sockaddr *uaddr,
@@ -822,7 +815,7 @@ static int tcp_v6_conn_request(struct sock *sk, struct sk_buff *skb)
treq->iif = inet6_iif(skb);
if (isn == 0)
- isn = tcp_v6_init_sequence(sk,skb);
+ isn = tcp_v6_init_sequence(skb);
tcp_rsk(req)->snt_isn = isn;