static int __xfrm4_bundle_create(struct xfrm_policy *policy, struct xfrm_state **xfrm, int nx, struct flowi *fl, struct dst_entry **dst_p) { struct dst_entry *dst, *dst_prev; struct rtable *rt0 = (struct rtable*)(*dst_p); struct rtable *rt = rt0; struct flowi fl_tunnel = { .nl_u = { .ip4_u = { .saddr = fl->fl4_src, .daddr = fl->fl4_dst, .tos = fl->fl4_tos } } }; int i; int err; int header_len = 0; int trailer_len = 0; dst = dst_prev = NULL; dst_hold(&rt->u.dst); for (i = 0; i < nx; i++) { struct dst_entry *dst1 = dst_alloc(&xfrm4_dst_ops); struct xfrm_dst *xdst; if (unlikely(dst1 == NULL)) { err = -ENOBUFS; dst_release(&rt->u.dst); goto error; } if (!dst) dst = dst1; else { dst_prev->child = dst1; dst1->flags |= DST_NOHASH; dst_clone(dst1); } xdst = (struct xfrm_dst *)dst1; xdst->route = &rt->u.dst; xdst->genid = xfrm[i]->genid; dst1->next = dst_prev; dst_prev = dst1; header_len += xfrm[i]->props.header_len; trailer_len += xfrm[i]->props.trailer_len; 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, encap_family); if (err) goto error; } else dst_hold(&rt->u.dst); } dst_prev->child = &rt->u.dst; dst->path = &rt->u.dst; *dst_p = dst; dst = dst_prev; dst_prev = *dst_p; 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->dev = rt->u.dst.dev; if (rt->u.dst.dev) dev_hold(rt->u.dst.dev); dst_prev->obsolete = -1; 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; /* 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, * it was magically lost, so this code needs audit */ x->u.rt.rt_flags = rt0->rt_flags&(RTCF_BROADCAST|RTCF_MULTICAST|RTCF_LOCAL); x->u.rt.rt_type = rt->rt_type; x->u.rt.rt_src = rt0->rt_src; x->u.rt.rt_dst = rt0->rt_dst; x->u.rt.rt_gateway = rt->rt_gateway; x->u.rt.rt_spec_dst = rt0->rt_spec_dst; x->u.rt.idev = rt0->idev; in_dev_hold(rt0->idev); header_len -= x->u.dst.xfrm->props.header_len; trailer_len -= x->u.dst.xfrm->props.trailer_len; } xfrm_init_pmtu(dst); return 0; error: if (dst) dst_free(dst); return err; }
static int __xfrm6_bundle_create(struct xfrm_policy *policy, struct xfrm_state **xfrm, int nx, struct flowi *fl, struct dst_entry **dst_p) { struct dst_entry *dst, *dst_prev; struct rt6_info *rt0 = (struct rt6_info*)(*dst_p); struct rt6_info *rt = rt0; struct in6_addr *remote = &fl->fl6_dst; struct in6_addr *local = &fl->fl6_src; struct flowi fl_tunnel = { .nl_u = { .ip6_u = { .saddr = *local, .daddr = *remote } } }; int i; int err = 0; int header_len = 0; int nfheader_len = 0; int trailer_len = 0; dst = dst_prev = NULL; dst_hold(&rt->u.dst); for (i = 0; i < nx; i++) { struct dst_entry *dst1 = dst_alloc(&xfrm6_dst_ops); struct xfrm_dst *xdst; int tunnel = 0; if (unlikely(dst1 == NULL)) { err = -ENOBUFS; dst_release(&rt->u.dst); goto error; } if (!dst) dst = dst1; else { dst_prev->child = dst1; dst1->flags |= DST_NOHASH; dst_clone(dst1); } xdst = (struct xfrm_dst *)dst1; xdst->route = &rt->u.dst; xdst->genid = xfrm[i]->genid; if (rt->rt6i_node) xdst->route_cookie = rt->rt6i_node->fn_sernum; dst1->next = dst_prev; dst_prev = dst1; if (xfrm[i]->props.mode != XFRM_MODE_TRANSPORT) { remote = __xfrm6_bundle_addr_remote(xfrm[i], remote); local = __xfrm6_bundle_addr_local(xfrm[i], local); tunnel = 1; } __xfrm6_bundle_len_inc(&header_len, &nfheader_len, xfrm[i]); trailer_len += xfrm[i]->props.trailer_len; if (tunnel) { ipv6_addr_copy(&fl_tunnel.fl6_dst, remote); ipv6_addr_copy(&fl_tunnel.fl6_src, local); err = xfrm_dst_lookup((struct xfrm_dst **) &rt, &fl_tunnel, AF_INET6); if (err) goto error; } else dst_hold(&rt->u.dst); } dst_prev->child = &rt->u.dst; dst->path = &rt->u.dst; if (rt->rt6i_node) ((struct xfrm_dst *)dst)->path_cookie = rt->rt6i_node->fn_sernum; *dst_p = dst; dst = dst_prev; dst_prev = *dst_p; i = 0; for (; dst_prev != &rt->u.dst; dst_prev = dst_prev->child) { struct xfrm_dst *x = (struct xfrm_dst*)dst_prev; dst_prev->xfrm = xfrm[i++]; dst_prev->dev = rt->u.dst.dev; if (rt->u.dst.dev) dev_hold(rt->u.dst.dev); dst_prev->obsolete = -1; dst_prev->flags |= DST_HOST; dst_prev->lastuse = jiffies; dst_prev->header_len = header_len; dst_prev->nfheader_len = nfheader_len; dst_prev->trailer_len = trailer_len; memcpy(&dst_prev->metrics, &x->route->metrics, sizeof(dst_prev->metrics)); /* Copy neighbour for reachability confirmation */ dst_prev->neighbour = neigh_clone(rt->u.dst.neighbour); dst_prev->input = rt->u.dst.input; dst_prev->output = xfrm6_output; /* Sheit... I remember I did this right. Apparently, * it was magically lost, so this code needs audit */ x->u.rt6.rt6i_flags = rt0->rt6i_flags&(RTCF_BROADCAST|RTCF_MULTICAST|RTCF_LOCAL); x->u.rt6.rt6i_metric = rt0->rt6i_metric; x->u.rt6.rt6i_node = rt0->rt6i_node; x->u.rt6.rt6i_gateway = rt0->rt6i_gateway; memcpy(&x->u.rt6.rt6i_gateway, &rt0->rt6i_gateway, sizeof(x->u.rt6.rt6i_gateway)); x->u.rt6.rt6i_dst = rt0->rt6i_dst; x->u.rt6.rt6i_src = rt0->rt6i_src; x->u.rt6.rt6i_idev = rt0->rt6i_idev; in6_dev_hold(rt0->rt6i_idev); __xfrm6_bundle_len_dec(&header_len, &nfheader_len, x->u.dst.xfrm); trailer_len -= x->u.dst.xfrm->props.trailer_len; } xfrm_init_pmtu(dst); return 0; error: if (dst) dst_free(dst); return err; }
static int __xfrm6_bundle_create(struct xfrm_policy *policy, struct xfrm_state **xfrm, int nx, struct flowi *fl, struct dst_entry **dst_p) { struct dst_entry *dst, *dst_prev; struct rt6_info *rt0 = (struct rt6_info*)(*dst_p); struct rt6_info *rt = rt0; struct in6_addr *remote = &fl->fl6_dst; struct in6_addr *local = &fl->fl6_src; int i; int err = 0; int header_len = 0; int trailer_len = 0; dst = dst_prev = NULL; for (i = 0; i < nx; i++) { struct dst_entry *dst1 = dst_alloc(&xfrm6_dst_ops); if (unlikely(dst1 == NULL)) { err = -ENOBUFS; goto error; } if (!dst) dst = dst1; else { dst_prev->child = dst1; dst1->flags |= DST_NOHASH; dst_clone(dst1); } dst_prev = dst1; if (xfrm[i]->props.mode) { remote = (struct in6_addr*)&xfrm[i]->id.daddr; local = (struct in6_addr*)&xfrm[i]->props.saddr; } header_len += xfrm[i]->props.header_len; trailer_len += xfrm[i]->props.trailer_len; } if (ipv6_addr_cmp(remote, &fl->fl6_dst)) { struct flowi fl_tunnel; memset(&fl_tunnel, 0, sizeof(fl_tunnel)); ipv6_addr_copy(&fl_tunnel.fl6_dst, remote); ipv6_addr_copy(&fl_tunnel.fl6_src, local); err = xfrm_dst_lookup((struct xfrm_dst **) &rt, &fl_tunnel, AF_INET6); if (err) goto error; } else { dst_hold(&rt->u.dst); } dst_prev->child = &rt->u.dst; i = 0; for (dst_prev = dst; dst_prev != &rt->u.dst; dst_prev = dst_prev->child) { struct xfrm_dst *x = (struct xfrm_dst*)dst_prev; dst_prev->xfrm = xfrm[i++]; dst_prev->dev = rt->u.dst.dev; if (rt->u.dst.dev) dev_hold(rt->u.dst.dev); dst_prev->obsolete = -1; dst_prev->flags |= DST_HOST; dst_prev->lastuse = jiffies; dst_prev->header_len = header_len; dst_prev->trailer_len = trailer_len; memcpy(&dst_prev->metrics, &rt->u.dst.metrics, sizeof(dst_prev->metrics)); dst_prev->path = &rt->u.dst; /* Copy neighbour for reachability confirmation */ dst_prev->neighbour = neigh_clone(rt->u.dst.neighbour); dst_prev->input = rt->u.dst.input; dst_prev->output = dst_prev->xfrm->type->output; /* Sheit... I remember I did this right. Apparently, * it was magically lost, so this code needs audit */ x->u.rt6.rt6i_flags = rt0->rt6i_flags&(RTCF_BROADCAST|RTCF_MULTICAST|RTCF_LOCAL); x->u.rt6.rt6i_metric = rt0->rt6i_metric; x->u.rt6.rt6i_node = rt0->rt6i_node; x->u.rt6.rt6i_gateway = rt0->rt6i_gateway; memcpy(&x->u.rt6.rt6i_gateway, &rt0->rt6i_gateway, sizeof(x->u.rt6.rt6i_gateway)); x->u.rt6.rt6i_dst = rt0->rt6i_dst; x->u.rt6.rt6i_src = rt0->rt6i_src; header_len -= x->u.dst.xfrm->props.header_len; trailer_len -= x->u.dst.xfrm->props.trailer_len; } *dst_p = dst; return 0; error: if (dst) dst_free(dst); return err; }
static int __xfrm4_bundle_create(struct xfrm_policy *policy, struct xfrm_state **xfrm, int nx, struct flowi *fl, struct dst_entry **dst_p) { 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, .tos = fl->fl4_tos } } }; int i; int err; int header_len = 0; int trailer_len = 0; dst = dst_prev = NULL; dst_hold(&rt->u.dst); 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; dst_release(&rt->u.dst); goto error; } if (!dst) dst = dst1; else { dst_prev->child = dst1; dst1->flags |= DST_NOHASH; dst_clone(dst1); } 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 != XFRM_MODE_TRANSPORT) { 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; err = xfrm_dst_lookup((struct xfrm_dst **)&rt, &fl_tunnel, AF_INET); if (err) goto error; } else dst_hold(&rt->u.dst); } dst_prev->child = &rt->u.dst; dst->path = &rt->u.dst; *dst_p = dst; dst = dst_prev; dst_prev = *dst_p; i = 0; for (; dst_prev != &rt->u.dst; dst_prev = dst_prev->child) { struct xfrm_dst *x = (struct xfrm_dst*)dst_prev; x->u.rt.fl = *fl; dst_prev->xfrm = xfrm[i++]; dst_prev->dev = rt->u.dst.dev; if (rt->u.dst.dev) dev_hold(rt->u.dst.dev); dst_prev->obsolete = -1; 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) atomic_inc(&rt->peer->refcnt); x->u.rt.peer = rt->peer; /* Sheit... I remember I did this right. Apparently, * it was magically lost, so this code needs audit */ x->u.rt.rt_flags = rt0->rt_flags&(RTCF_BROADCAST|RTCF_MULTICAST|RTCF_LOCAL); x->u.rt.rt_type = rt->rt_type; x->u.rt.rt_src = rt0->rt_src; x->u.rt.rt_dst = rt0->rt_dst; x->u.rt.rt_gateway = rt->rt_gateway; x->u.rt.rt_spec_dst = rt0->rt_spec_dst; x->u.rt.idev = rt0->idev; in_dev_hold(rt0->idev); header_len -= x->u.dst.xfrm->props.header_len; trailer_len -= x->u.dst.xfrm->props.trailer_len; } xfrm_init_pmtu(dst); return 0; error: if (dst) dst_free(dst); return err; }