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| author | Arnaud Ebalard <arno@natisbad.org> | 2010-06-01 21:35:01 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-06-02 07:08:31 -0700 |
| commit | 20c59de2e6b6bc74bbf714dcd4e720afe8d516cf (patch) | |
| tree | 45e5c62e286368f8259b844cb7cf796d19066fb0 /net/ipv6/syncookies.c | |
| parent | d92222e27fdc98d73df25f3d49fb1ff3a3369bec (diff) | |
| download | linux-20c59de2e6b6bc74bbf714dcd4e720afe8d516cf.tar.gz linux-20c59de2e6b6bc74bbf714dcd4e720afe8d516cf.tar.bz2 linux-20c59de2e6b6bc74bbf714dcd4e720afe8d516cf.zip | |
ipv6: Refactor update of IPv6 flowi destination address for srcrt (RH) option
There are more than a dozen occurrences of following code in the
IPv6 stack:
if (opt && opt->srcrt) {
struct rt0_hdr *rt0 = (struct rt0_hdr *) opt->srcrt;
ipv6_addr_copy(&final, &fl.fl6_dst);
ipv6_addr_copy(&fl.fl6_dst, rt0->addr);
final_p = &final;
}
Replace those with a helper. Note that the helper overrides final_p
in all cases. This is ok as final_p was previously initialized to
NULL when declared.
Signed-off-by: Arnaud Ebalard <arno@natisbad.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/syncookies.c')
| -rw-r--r-- | net/ipv6/syncookies.c | 9 |
1 files changed, 2 insertions, 7 deletions
diff --git a/net/ipv6/syncookies.c b/net/ipv6/syncookies.c index 34d1f0690d7e..12383705dbad 100644 --- a/net/ipv6/syncookies.c +++ b/net/ipv6/syncookies.c @@ -240,17 +240,12 @@ struct sock *cookie_v6_check(struct sock *sk, struct sk_buff *skb) * me if there is a preferred way. */ { - struct in6_addr *final_p = NULL, final; + struct in6_addr *final_p, final; struct flowi fl; memset(&fl, 0, sizeof(fl)); fl.proto = IPPROTO_TCP; ipv6_addr_copy(&fl.fl6_dst, &ireq6->rmt_addr); - if (np->opt && np->opt->srcrt) { - struct rt0_hdr *rt0 = (struct rt0_hdr *) np->opt->srcrt; - ipv6_addr_copy(&final, &fl.fl6_dst); - ipv6_addr_copy(&fl.fl6_dst, rt0->addr); - final_p = &final; - } + final_p = fl6_update_dst(&fl, np->opt, &final); ipv6_addr_copy(&fl.fl6_src, &ireq6->loc_addr); fl.oif = sk->sk_bound_dev_if; fl.mark = sk->sk_mark; |