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| author |   Gerrit Renker <gerrit@erg.abdn.ac.uk> | 2006-11-13 13:31:50 -0200 |
|---|---|---|
| committer |   David S. Miller <davem@sunset.davemloft.net> | 2006-12-02 21:22:21 -0800 |
| commit | 865e9022d88ceedd89fa1079a6e1f9266ccd3711 (patch) | |
| tree | bc276752f832226f9a506f1fe65bff000bea557e /net/dccp | |
| parent | [DCCP]: Remove forward declarations in timer.c (diff) | |
| download | linux-dev-865e9022d88ceedd89fa1079a6e1f9266ccd3711.tar.xz linux-dev-865e9022d88ceedd89fa1079a6e1f9266ccd3711.zip | |
[DCCP]: Remove redundant statements in init_sequence (ISS)
This patch removes the following redundancies:
1) The test skb->protocol == htons(ETH_P_IPV6) in dccp_v6_init_sequence
is always true since
* dccp_v6_conn_request() is the only calling function
* dccp_v6_conn_request() redirects all skb's with ETH_P_IP to
dccp_v4_conn_request()
2) The first argument, `struct sock *sk', of dccp_v{4,6}_init_sequence()
is never used.
(This is similar for tcp_v{4,6}_init_sequence, an analogous patch has been
submitted to netdev and merged.)
By the way - are the `sport' / `dport' arguments in the right order?
I have made them consistent among calls but they seem to be in the
reverse order.
Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
Diffstat (limited to 'net/dccp')
| -rw-r--r-- | net/dccp/ipv4.c | 5 | ||||
| -rw-r--r-- | net/dccp/ipv6.c | 20 |
2 files changed, 8 insertions, 17 deletions
diff --git a/net/dccp/ipv4.c b/net/dccp/ipv4.c index 84c05405984e..b56a2fa2694a 100644 --- a/net/dccp/ipv4.c +++ b/net/dccp/ipv4.c @@ -366,8 +366,7 @@ void dccp_v4_send_check(struct sock *sk, int unused, struct sk_buff *skb) EXPORT_SYMBOL_GPL(dccp_v4_send_check); -static inline u64 dccp_v4_init_sequence(const struct sock *sk, - const struct sk_buff *skb) +static inline u64 dccp_v4_init_sequence(const struct sk_buff *skb) { return secure_dccp_sequence_number(skb->nh.iph->daddr, skb->nh.iph->saddr, @@ -663,7 +662,7 @@ int dccp_v4_conn_request(struct sock *sk, struct sk_buff *skb) */ dreq = dccp_rsk(req); dreq->dreq_isr = dcb->dccpd_seq; - dreq->dreq_iss = dccp_v4_init_sequence(sk, skb); + dreq->dreq_iss = dccp_v4_init_sequence(skb); dreq->dreq_service = service; if (dccp_v4_send_response(sk, req, NULL)) diff --git a/net/dccp/ipv6.c b/net/dccp/ipv6.c index 193b946fd039..a08af75ddc9e 100644 --- a/net/dccp/ipv6.c +++ b/net/dccp/ipv6.c @@ -76,20 +76,12 @@ static inline void dccp_v6_send_check(struct sock *sk, int unused_value, dh->dccph_checksum = dccp_v6_csum_finish(skb, &np->saddr, &np->daddr); } -static __u32 dccp_v6_init_sequence(struct sock *sk, struct sk_buff *skb) +static inline __u32 dccp_v6_init_sequence(const struct sk_buff *skb) { - const struct dccp_hdr *dh = dccp_hdr(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, - dh->dccph_dport, - dh->dccph_sport); - - return secure_dccp_sequence_number(skb->nh.iph->daddr, - skb->nh.iph->saddr, - dh->dccph_dport, - dh->dccph_sport); + return secure_tcpv6_sequence_number(skb->nh.ipv6h->daddr.s6_addr32, + skb->nh.ipv6h->saddr.s6_addr32, + dccp_hdr(skb)->dccph_dport, + dccp_hdr(skb)->dccph_sport ); } static void dccp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt, @@ -491,7 +483,7 @@ static int dccp_v6_conn_request(struct sock *sk, struct sk_buff *skb) */ dreq = dccp_rsk(req); dreq->dreq_isr = dcb->dccpd_seq; - dreq->dreq_iss = dccp_v6_init_sequence(sk, skb); + dreq->dreq_iss = dccp_v6_init_sequence(skb); dreq->dreq_service = service; if (dccp_v6_send_response(sk, req, NULL)) |