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ipv6: Refactor update of IPv6 flowi destination address for srcrt (RH) option

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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>
This commit is contained in:
Arnaud Ebalard
2010-06-01 21:35:01 +00:00
committed by David S. Miller
parent d92222e27f
commit 20c59de2e6
10 changed files with 55 additions and 96 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
net/ipv6/af_inet6.c
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@ -651,7 +651,7 @@ int inet6_sk_rebuild_header(struct sock *sk)
if (dst == NULL) {
struct inet_sock *inet = inet_sk(sk);
struct in6_addr *final_p = NULL, final;
struct in6_addr *final_p, final;
struct flowi fl;
memset(&fl, 0, sizeof(fl));
@ -665,12 +665,7 @@ int inet6_sk_rebuild_header(struct sock *sk)
fl.fl_ip_sport = inet->inet_sport;
security_sk_classify_flow(sk, &fl);
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);
err = ip6_dst_lookup(sk, &dst, &fl);
if (err) {