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author | YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> | 2008-04-28 02:46:24 +0900 |
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committer | YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> | 2008-06-12 02:38:17 +0900 |
commit | 5f95ac9111f75aa240dc3bcabffc0f047f13cb64 (patch) | |
tree | a4e0d2a650ed3fd2c6d248241ffae7e23e71d048 | |
parent | e5b56652c11baf144eb713c33ff70a1b5d6d09bc (diff) | |
download | op-kernel-dev-5f95ac9111f75aa240dc3bcabffc0f047f13cb64.zip op-kernel-dev-5f95ac9111f75aa240dc3bcabffc0f047f13cb64.tar.gz |
key: Share common code path to extract address from sockaddr{}.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
-rw-r--r-- | net/key/af_key.c | 107 |
1 files changed, 38 insertions, 69 deletions
diff --git a/net/key/af_key.c b/net/key/af_key.c index 2b05cb6..771bd61 100644 --- a/net/key/af_key.c +++ b/net/key/af_key.c @@ -592,25 +592,30 @@ static inline int pfkey_sockaddr_len(sa_family_t family) return 0; } -static int pfkey_sadb_addr2xfrm_addr(struct sadb_address *addr, - xfrm_address_t *xaddr) +static +int pfkey_sockaddr_extract(const struct sockaddr *sa, xfrm_address_t *xaddr) { - switch (((struct sockaddr*)(addr + 1))->sa_family) { + switch (sa->sa_family) { case AF_INET: xaddr->a4 = - ((struct sockaddr_in *)(addr + 1))->sin_addr.s_addr; + ((struct sockaddr_in *)sa)->sin_addr.s_addr; return AF_INET; #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) case AF_INET6: memcpy(xaddr->a6, - &((struct sockaddr_in6 *)(addr + 1))->sin6_addr, + &((struct sockaddr_in6 *)sa)->sin6_addr, sizeof(struct in6_addr)); return AF_INET6; #endif - default: - return 0; } - /* NOTREACHED */ + return 0; +} + +static +int pfkey_sadb_addr2xfrm_addr(struct sadb_address *addr, xfrm_address_t *xaddr) +{ + return pfkey_sockaddr_extract((struct sockaddr *)(addr + 1), + xaddr); } static struct xfrm_state *pfkey_xfrm_state_lookup(struct sadb_msg *hdr, void **ext_hdrs) @@ -1828,10 +1833,6 @@ static int parse_ipsecrequest(struct xfrm_policy *xp, struct sadb_x_ipsecrequest *rq) { struct xfrm_tmpl *t = xp->xfrm_vec + xp->xfrm_nr; - struct sockaddr_in *sin; -#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) - struct sockaddr_in6 *sin6; -#endif int mode; if (xp->xfrm_nr >= XFRM_MAX_DEPTH) @@ -1856,31 +1857,19 @@ parse_ipsecrequest(struct xfrm_policy *xp, struct sadb_x_ipsecrequest *rq) /* addresses present only in tunnel mode */ if (t->mode == XFRM_MODE_TUNNEL) { - struct sockaddr *sa; - sa = (struct sockaddr *)(rq+1); - switch(sa->sa_family) { - case AF_INET: - sin = (struct sockaddr_in*)sa; - t->saddr.a4 = sin->sin_addr.s_addr; - sin++; - if (sin->sin_family != AF_INET) - return -EINVAL; - t->id.daddr.a4 = sin->sin_addr.s_addr; - break; -#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) - case AF_INET6: - sin6 = (struct sockaddr_in6*)sa; - memcpy(t->saddr.a6, &sin6->sin6_addr, sizeof(struct in6_addr)); - sin6++; - if (sin6->sin6_family != AF_INET6) - return -EINVAL; - memcpy(t->id.daddr.a6, &sin6->sin6_addr, sizeof(struct in6_addr)); - break; -#endif - default: + u8 *sa = (u8 *) (rq + 1); + int family, socklen; + + family = pfkey_sockaddr_extract((struct sockaddr *)sa, + &t->saddr); + if (!family) return -EINVAL; - } - t->encap_family = sa->sa_family; + + socklen = pfkey_sockaddr_len(family); + if (pfkey_sockaddr_extract((struct sockaddr *)(sa + socklen), + &t->id.daddr) != family) + return -EINVAL; + t->encap_family = family; } else t->encap_family = xp->family; @@ -2375,44 +2364,24 @@ static int parse_sockaddr_pair(struct sadb_x_ipsecrequest *rq, xfrm_address_t *saddr, xfrm_address_t *daddr, u16 *family) { - struct sockaddr *sa = (struct sockaddr *)(rq + 1); + u8 *sa = (u8 *) (rq + 1); + int af, socklen; + if (rq->sadb_x_ipsecrequest_len < - pfkey_sockaddr_pair_size(sa->sa_family)) + pfkey_sockaddr_pair_size(((struct sockaddr *)sa)->sa_family)) return -EINVAL; - switch (sa->sa_family) { - case AF_INET: - { - struct sockaddr_in *sin; - sin = (struct sockaddr_in *)sa; - if ((sin+1)->sin_family != AF_INET) - return -EINVAL; - memcpy(&saddr->a4, &sin->sin_addr, sizeof(saddr->a4)); - sin++; - memcpy(&daddr->a4, &sin->sin_addr, sizeof(daddr->a4)); - *family = AF_INET; - break; - } -#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) - case AF_INET6: - { - struct sockaddr_in6 *sin6; - sin6 = (struct sockaddr_in6 *)sa; - if ((sin6+1)->sin6_family != AF_INET6) - return -EINVAL; - memcpy(&saddr->a6, &sin6->sin6_addr, - sizeof(saddr->a6)); - sin6++; - memcpy(&daddr->a6, &sin6->sin6_addr, - sizeof(daddr->a6)); - *family = AF_INET6; - break; - } -#endif - default: + af = pfkey_sockaddr_extract((struct sockaddr *) sa, + saddr); + if (!af) + return -EINVAL; + + socklen = pfkey_sockaddr_len(af); + if (pfkey_sockaddr_extract((struct sockaddr *) (sa + socklen), + daddr) != af) return -EINVAL; - } + *family = af; return 0; } |