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[IPSEC]: Add AF_KEY interface for encapsulation family. 

Signed-off-by: Miika Komu <miika@iki.fi>
Signed-off-by: Diego Beltrami <Diego.Beltrami@hiit.fi>
Signed-off-by: Kazunori Miyazawa <miyazawa@linux-ipv6.org>
This commit is contained in:
Miika Komu 2006-11-30 16:41:50 -08:00 committed by David S. Miller
parent 8511d01d7c
commit 2718aa7c55
1 changed files with 25 additions and 15 deletions
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40
net/key/af_key.c
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@ -1767,11 +1767,11 @@ parse_ipsecrequest(struct xfrm_policy *xp, struct sadb_x_ipsecrequest *rq)
/* addresses present only in tunnel mode */
if (t->mode == XFRM_MODE_TUNNEL) {
switch (xp->family) {
struct sockaddr *sa;
sa = (struct sockaddr *)(rq+1);
switch(sa->sa_family) {
case AF_INET:
sin = (void*)(rq+1);
if (sin->sin_family != AF_INET)
return -EINVAL;
sin = (struct sockaddr_in*)sa;
t->saddr.a4 = sin->sin_addr.s_addr;
sin++;
if (sin->sin_family != AF_INET)
@ -1780,9 +1780,7 @@ parse_ipsecrequest(struct xfrm_policy *xp, struct sadb_x_ipsecrequest *rq)
break;
#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
case AF_INET6:
sin6 = (void *)(rq+1);
if (sin6->sin6_family != AF_INET6)
return -EINVAL;
sin6 = (struct sockaddr_in6*)sa;
memcpy(t->saddr.a6, &sin6->sin6_addr, sizeof(struct in6_addr));
sin6++;
if (sin6->sin6_family != AF_INET6)
@ -1793,7 +1791,10 @@ parse_ipsecrequest(struct xfrm_policy *xp, struct sadb_x_ipsecrequest *rq)
default:
return -EINVAL;
}
}
t->encap_family = sa->sa_family;
} else
t->encap_family = xp->family;
/* No way to set this via kame pfkey */
t->aalgos = t->ealgos = t->calgos = ~0;
xp->xfrm_nr++;
@ -1830,18 +1831,25 @@ static inline int pfkey_xfrm_policy2sec_ctx_size(struct xfrm_policy *xp)
static int pfkey_xfrm_policy2msg_size(struct xfrm_policy *xp)
{
struct xfrm_tmpl *t;
int sockaddr_size = pfkey_sockaddr_size(xp->family);
int socklen = (xp->family == AF_INET ?
sizeof(struct sockaddr_in) :
sizeof(struct sockaddr_in6));
int socklen = 0;
int i;
for (i=0; i<xp->xfrm_nr; i++) {
t = xp->xfrm_vec + i;
socklen += (t->encap_family == AF_INET ?
sizeof(struct sockaddr_in) :
sizeof(struct sockaddr_in6));
}
return sizeof(struct sadb_msg) +
(sizeof(struct sadb_lifetime) * 3) +
(sizeof(struct sadb_address) * 2) +
(sockaddr_size * 2) +
sizeof(struct sadb_x_policy) +
(xp->xfrm_nr * (sizeof(struct sadb_x_ipsecrequest) +
(socklen * 2))) +
(xp->xfrm_nr * sizeof(struct sadb_x_ipsecrequest)) +
(socklen * 2) +
pfkey_xfrm_policy2sec_ctx_size(xp);
}
@ -1999,7 +2007,9 @@ static void pfkey_xfrm_policy2msg(struct sk_buff *skb, struct xfrm_policy *xp, i
req_size = sizeof(struct sadb_x_ipsecrequest);
if (t->mode == XFRM_MODE_TUNNEL)
req_size += 2*socklen;
req_size += ((t->encap_family == AF_INET ?
sizeof(struct sockaddr_in) :
sizeof(struct sockaddr_in6)) * 2);
else
size -= 2*socklen;
rq = (void*)skb_put(skb, req_size);
@ -2015,7 +2025,7 @@ static void pfkey_xfrm_policy2msg(struct sk_buff *skb, struct xfrm_policy *xp, i
rq->sadb_x_ipsecrequest_level = IPSEC_LEVEL_USE;
rq->sadb_x_ipsecrequest_reqid = t->reqid;
if (t->mode == XFRM_MODE_TUNNEL) {
switch (xp->family) {
switch (t->encap_family) {
case AF_INET:
sin = (void*)(rq+1);
sin->sin_family = AF_INET;