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authorGerrit Renker <gerrit@erg.abdn.ac.uk>2006-11-13 13:31:50 -0200
committerDavid S. Miller <davem@sunset.davemloft.net>2006-12-02 21:22:21 -0800
commit865e9022d88ceedd89fa1079a6e1f9266ccd3711 (patch)
treebc276752f832226f9a506f1fe65bff000bea557e /net/dccp/ipv6.c
parent4ed800d02cfb639b4f8375a0f0f04f0efea64e7f (diff)
downloadlinux-865e9022d88ceedd89fa1079a6e1f9266ccd3711.tar.bz2
[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/ipv6.c')
-rw-r--r--net/dccp/ipv6.c20
1 files changed, 6 insertions, 14 deletions
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))