-/*
+/*
* xfrm4_policy.c
*
* Changes:
* Kazunori MIYAZAWA @USAGI
* YOSHIFUJI Hideaki @USAGI
* Split up af-specific portion
- *
+ *
*/
#include <linux/compiler.h>
-#include <linux/config.h>
#include <linux/inetdevice.h>
#include <net/xfrm.h>
#include <net/ip.h>
return __ip_route_output_key((struct rtable**)dst, fl);
}
+static int xfrm4_get_saddr(xfrm_address_t *saddr, xfrm_address_t *daddr)
+{
+ struct rtable *rt;
+ struct flowi fl_tunnel = {
+ .nl_u = {
+ .ip4_u = {
+ .daddr = daddr->a4,
+ },
+ },
+ };
+
+ if (!xfrm4_dst_lookup((struct xfrm_dst **)&rt, &fl_tunnel)) {
+ saddr->a4 = rt->rt_src;
+ dst_release(&rt->u.dst);
+ return 0;
+ }
+ return -EHOSTUNREACH;
+}
+
static struct dst_entry *
__xfrm4_find_bundle(struct flowi *fl, struct xfrm_policy *policy)
{
struct xfrm_dst *xdst = (struct xfrm_dst*)dst;
if (xdst->u.rt.fl.oif == fl->oif && /*XXX*/
xdst->u.rt.fl.fl4_dst == fl->fl4_dst &&
- xdst->u.rt.fl.fl4_src == fl->fl4_src &&
- xdst->u.rt.fl.fl4_tos == fl->fl4_tos &&
- xfrm_bundle_ok(xdst, fl, AF_INET)) {
+ xdst->u.rt.fl.fl4_src == fl->fl4_src &&
+ xdst->u.rt.fl.fl4_tos == fl->fl4_tos &&
+ xfrm_bundle_ok(policy, xdst, fl, AF_INET, 0)) {
dst_clone(dst);
break;
}
struct dst_entry *dst, *dst_prev;
struct rtable *rt0 = (struct rtable*)(*dst_p);
struct rtable *rt = rt0;
- u32 remote = fl->fl4_dst;
- u32 local = fl->fl4_src;
struct flowi fl_tunnel = {
.nl_u = {
.ip4_u = {
- .saddr = local,
- .daddr = remote,
+ .saddr = fl->fl4_src,
+ .daddr = fl->fl4_dst,
.tos = fl->fl4_tos
}
}
for (i = 0; i < nx; i++) {
struct dst_entry *dst1 = dst_alloc(&xfrm4_dst_ops);
struct xfrm_dst *xdst;
- int tunnel = 0;
if (unlikely(dst1 == NULL)) {
err = -ENOBUFS;
xdst = (struct xfrm_dst *)dst1;
xdst->route = &rt->u.dst;
+ xdst->genid = xfrm[i]->genid;
dst1->next = dst_prev;
dst_prev = dst1;
- if (xfrm[i]->props.mode) {
- remote = xfrm[i]->id.daddr.a4;
- local = xfrm[i]->props.saddr.a4;
- tunnel = 1;
- }
+
header_len += xfrm[i]->props.header_len;
trailer_len += xfrm[i]->props.trailer_len;
- if (tunnel) {
- fl_tunnel.fl4_src = local;
- fl_tunnel.fl4_dst = remote;
+ if (xfrm[i]->props.mode == XFRM_MODE_TUNNEL) {
+ unsigned short encap_family = xfrm[i]->props.family;
+ switch(encap_family) {
+ case AF_INET:
+ fl_tunnel.fl4_dst = xfrm[i]->id.daddr.a4;
+ fl_tunnel.fl4_src = xfrm[i]->props.saddr.a4;
+ break;
+#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
+ case AF_INET6:
+ ipv6_addr_copy(&fl_tunnel.fl6_dst, (struct in6_addr*)&xfrm[i]->id.daddr.a6);
+ ipv6_addr_copy(&fl_tunnel.fl6_src, (struct in6_addr*)&xfrm[i]->props.saddr.a6);
+ break;
+#endif
+ default:
+ BUG_ON(1);
+ }
err = xfrm_dst_lookup((struct xfrm_dst **)&rt,
- &fl_tunnel, AF_INET);
+ &fl_tunnel, encap_family);
if (err)
goto error;
} else
i = 0;
for (; dst_prev != &rt->u.dst; dst_prev = dst_prev->child) {
struct xfrm_dst *x = (struct xfrm_dst*)dst_prev;
+ struct xfrm_state_afinfo *afinfo;
x->u.rt.fl = *fl;
dst_prev->xfrm = xfrm[i++];
dst_prev->flags |= DST_HOST;
dst_prev->lastuse = jiffies;
dst_prev->header_len = header_len;
+ dst_prev->nfheader_len = 0;
dst_prev->trailer_len = trailer_len;
memcpy(&dst_prev->metrics, &x->route->metrics, sizeof(dst_prev->metrics));
/* Copy neighbout for reachability confirmation */
dst_prev->neighbour = neigh_clone(rt->u.dst.neighbour);
dst_prev->input = rt->u.dst.input;
- dst_prev->output = xfrm4_output;
- if (rt->peer)
+ /* XXX: When IPv6 module can be unloaded, we should manage reference
+ * to xfrm6_output in afinfo->output. Miyazawa
+ * */
+ afinfo = xfrm_state_get_afinfo(dst_prev->xfrm->props.family);
+ if (!afinfo) {
+ dst = *dst_p;
+ err = -EAFNOSUPPORT;
+ goto error;
+ }
+ dst_prev->output = afinfo->output;
+ xfrm_state_put_afinfo(afinfo);
+ if (dst_prev->xfrm->props.family == AF_INET && rt->peer)
atomic_inc(&rt->peer->refcnt);
x->u.rt.peer = rt->peer;
/* Sheit... I remember I did this right. Apparently,
if (!(iph->frag_off & htons(IP_MF | IP_OFFSET))) {
switch (iph->protocol) {
case IPPROTO_UDP:
+ case IPPROTO_UDPLITE:
case IPPROTO_TCP:
case IPPROTO_SCTP:
case IPPROTO_DCCP:
if (pskb_may_pull(skb, xprth + 4 - skb->data)) {
- u16 *ports = (u16 *)xprth;
+ __be16 *ports = (__be16 *)xprth;
fl->fl_ip_sport = ports[0];
fl->fl_ip_dport = ports[1];
case IPPROTO_ESP:
if (pskb_may_pull(skb, xprth + 4 - skb->data)) {
- u32 *ehdr = (u32 *)xprth;
+ __be32 *ehdr = (__be32 *)xprth;
fl->fl_ipsec_spi = ehdr[0];
}
case IPPROTO_AH:
if (pskb_may_pull(skb, xprth + 8 - skb->data)) {
- u32 *ah_hdr = (u32*)xprth;
+ __be32 *ah_hdr = (__be32*)xprth;
fl->fl_ipsec_spi = ah_hdr[1];
}
case IPPROTO_COMP:
if (pskb_may_pull(skb, xprth + 4 - skb->data)) {
- u16 *ipcomp_hdr = (u16 *)xprth;
+ __be16 *ipcomp_hdr = (__be16 *)xprth;
fl->fl_ipsec_spi = htonl(ntohs(ipcomp_hdr[1]));
}
if (likely(xdst->u.rt.idev))
in_dev_put(xdst->u.rt.idev);
+ if (dst->xfrm && dst->xfrm->props.family == AF_INET && likely(xdst->u.rt.peer))
+ inet_putpeer(xdst->u.rt.peer);
xfrm_dst_destroy(xdst);
}
.family = AF_INET,
.dst_ops = &xfrm4_dst_ops,
.dst_lookup = xfrm4_dst_lookup,
+ .get_saddr = xfrm4_get_saddr,
.find_bundle = __xfrm4_find_bundle,
.bundle_create = __xfrm4_bundle_create,
.decode_session = _decode_session4,
git.openpandora.org / pandora-kernel.git / blobdiff