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| author | Gerrit Renker <gerrit@erg.abdn.ac.uk> | 2006-11-10 14:06:49 -0800 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-12-02 21:22:10 -0800 |
| commit | a94f723d595ee085f81b1788d18e031af7eeba91 (patch) | |
| tree | ce9309a5ba780429bc6e10a2c075af9c9e5b769a | |
| parent | 6f4e5fff1e4d46714ea554fd83e44eab534e8b11 (diff) | |
| download | linux-3.10-a94f723d595ee085f81b1788d18e031af7eeba91.tar.gz linux-3.10-a94f723d595ee085f81b1788d18e031af7eeba91.tar.bz2 linux-3.10-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.c | 4 | ||||
| -rw-r--r-- | net/ipv6/tcp_ipv6.c | 19 |
2 files changed, 8 insertions, 15 deletions
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c index 5fbf96552ca..2eb58844403 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 06b536b47f9..9a8e690fdf7 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; |