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authorGerrit Renker <gerrit@erg.abdn.ac.uk>2006-11-10 23:06:49 +0100
committerDavid S. Miller <davem@sunset.davemloft.net>2006-12-03 06:22:10 +0100
commita94f723d595ee085f81b1788d18e031af7eeba91 (patch)
treece9309a5ba780429bc6e10a2c075af9c9e5b769a
parent[DCCP]: Support for partial checksums (RFC 4340, sec. 9.2) (diff)
downloadlinux-a94f723d595ee085f81b1788d18e031af7eeba91.tar.xz
linux-a94f723d595ee085f81b1788d18e031af7eeba91.zip
[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>
-rw-r--r--net/ipv4/tcp_ipv4.c4
-rw-r--r--net/ipv6/tcp_ipv6.c19
2 files changed, 8 insertions, 15 deletions
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 5fbf96552cac..2eb58844403c 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -111,7 +111,7 @@ void tcp_unhash(struct sock *sk)
inet_unhash(&tcp_hashinfo, sk);
}
-static inline __u32 tcp_v4_init_sequence(struct sock *sk, struct sk_buff *skb)
+static inline __u32 tcp_v4_init_sequence(struct sk_buff *skb)
{
return secure_tcp_sequence_number(skb->nh.iph->daddr,
skb->nh.iph->saddr,
@@ -859,7 +859,7 @@ int tcp_v4_conn_request(struct sock *sk, struct sk_buff *skb)
goto drop_and_free;
}
- isn = tcp_v4_init_sequence(sk, skb);
+ isn = tcp_v4_init_sequence(skb);
}
tcp_rsk(req)->snt_isn = isn;
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;