return NULL;
}
+/* Look for a (*,*,oif) entry */
+static struct mfc6_cache *ip6mr_cache_find_any_parent(struct mr6_table *mrt,
+ mifi_t mifi)
+{
+ int line = MFC6_HASH(&in6addr_any, &in6addr_any);
+ struct mfc6_cache *c;
+
+ list_for_each_entry(c, &mrt->mfc6_cache_array[line], list)
+ if (ipv6_addr_any(&c->mf6c_origin) &&
+ ipv6_addr_any(&c->mf6c_mcastgrp) &&
+ (c->mfc_un.res.ttls[mifi] < 255))
+ return c;
+
+ return NULL;
+}
+
+/* Look for a (*,G) entry */
+static struct mfc6_cache *ip6mr_cache_find_any(struct mr6_table *mrt,
+ struct in6_addr *mcastgrp,
+ mifi_t mifi)
+{
+ int line = MFC6_HASH(mcastgrp, &in6addr_any);
+ struct mfc6_cache *c, *proxy;
+
+ if (ipv6_addr_any(mcastgrp))
+ goto skip;
+
+ list_for_each_entry(c, &mrt->mfc6_cache_array[line], list)
+ if (ipv6_addr_any(&c->mf6c_origin) &&
+ ipv6_addr_equal(&c->mf6c_mcastgrp, mcastgrp)) {
+ if (c->mfc_un.res.ttls[mifi] < 255)
+ return c;
+
+ /* It's ok if the mifi is part of the static tree */
+ proxy = ip6mr_cache_find_any_parent(mrt,
+ c->mf6c_parent);
+ if (proxy && proxy->mfc_un.res.ttls[mifi] < 255)
+ return c;
+ }
+
+skip:
+ return ip6mr_cache_find_any_parent(mrt, mifi);
+}
+
/*
* Allocate a multicast cache entry
*/
* MFC6 cache manipulation by user space
*/
-static int ip6mr_mfc_delete(struct mr6_table *mrt, struct mf6cctl *mfc)
+static int ip6mr_mfc_delete(struct mr6_table *mrt, struct mf6cctl *mfc,
+ int parent)
{
int line;
struct mfc6_cache *c, *next;
list_for_each_entry_safe(c, next, &mrt->mfc6_cache_array[line], list) {
if (ipv6_addr_equal(&c->mf6c_origin, &mfc->mf6cc_origin.sin6_addr) &&
- ipv6_addr_equal(&c->mf6c_mcastgrp, &mfc->mf6cc_mcastgrp.sin6_addr)) {
+ ipv6_addr_equal(&c->mf6c_mcastgrp,
+ &mfc->mf6cc_mcastgrp.sin6_addr) &&
+ (parent == -1 || parent == c->mf6c_parent)) {
write_lock_bh(&mrt_lock);
list_del(&c->list);
write_unlock_bh(&mrt_lock);
#ifdef CONFIG_PROC_FS
err = -ENOMEM;
- if (!proc_net_fops_create(net, "ip6_mr_vif", 0, &ip6mr_vif_fops))
+ if (!proc_create("ip6_mr_vif", 0, net->proc_net, &ip6mr_vif_fops))
goto proc_vif_fail;
- if (!proc_net_fops_create(net, "ip6_mr_cache", 0, &ip6mr_mfc_fops))
+ if (!proc_create("ip6_mr_cache", 0, net->proc_net, &ip6mr_mfc_fops))
goto proc_cache_fail;
#endif
#ifdef CONFIG_PROC_FS
proc_cache_fail:
- proc_net_remove(net, "ip6_mr_vif");
+ remove_proc_entry("ip6_mr_vif", net->proc_net);
proc_vif_fail:
ip6mr_rules_exit(net);
#endif
static void __net_exit ip6mr_net_exit(struct net *net)
{
#ifdef CONFIG_PROC_FS
- proc_net_remove(net, "ip6_mr_cache");
- proc_net_remove(net, "ip6_mr_vif");
+ remove_proc_entry("ip6_mr_cache", net->proc_net);
+ remove_proc_entry("ip6_mr_vif", net->proc_net);
#endif
ip6mr_rules_exit(net);
}
}
static int ip6mr_mfc_add(struct net *net, struct mr6_table *mrt,
- struct mf6cctl *mfc, int mrtsock)
+ struct mf6cctl *mfc, int mrtsock, int parent)
{
bool found = false;
int line;
list_for_each_entry(c, &mrt->mfc6_cache_array[line], list) {
if (ipv6_addr_equal(&c->mf6c_origin, &mfc->mf6cc_origin.sin6_addr) &&
- ipv6_addr_equal(&c->mf6c_mcastgrp, &mfc->mf6cc_mcastgrp.sin6_addr)) {
+ ipv6_addr_equal(&c->mf6c_mcastgrp,
+ &mfc->mf6cc_mcastgrp.sin6_addr) &&
+ (parent == -1 || parent == mfc->mf6cc_parent)) {
found = true;
break;
}
return 0;
}
- if (!ipv6_addr_is_multicast(&mfc->mf6cc_mcastgrp.sin6_addr))
+ if (!ipv6_addr_any(&mfc->mf6cc_mcastgrp.sin6_addr) &&
+ !ipv6_addr_is_multicast(&mfc->mf6cc_mcastgrp.sin6_addr))
return -EINVAL;
c = ip6mr_cache_alloc();
int ip6_mroute_setsockopt(struct sock *sk, int optname, char __user *optval, unsigned int optlen)
{
- int ret;
+ int ret, parent = 0;
struct mif6ctl vif;
struct mf6cctl mfc;
mifi_t mifi;
*/
case MRT6_ADD_MFC:
case MRT6_DEL_MFC:
+ parent = -1;
+ case MRT6_ADD_MFC_PROXY:
+ case MRT6_DEL_MFC_PROXY:
if (optlen < sizeof(mfc))
return -EINVAL;
if (copy_from_user(&mfc, optval, sizeof(mfc)))
return -EFAULT;
+ if (parent == 0)
+ parent = mfc.mf6cc_parent;
rtnl_lock();
- if (optname == MRT6_DEL_MFC)
- ret = ip6mr_mfc_delete(mrt, &mfc);
+ if (optname == MRT6_DEL_MFC || optname == MRT6_DEL_MFC_PROXY)
+ ret = ip6mr_mfc_delete(mrt, &mfc, parent);
else
- ret = ip6mr_mfc_add(net, mrt, &mfc, sk == mrt->mroute6_sk);
+ ret = ip6mr_mfc_add(net, mrt, &mfc,
+ sk == mrt->mroute6_sk, parent);
rtnl_unlock();
return ret;
{
int psend = -1;
int vif, ct;
+ int true_vifi = ip6mr_find_vif(mrt, skb->dev);
vif = cache->mf6c_parent;
cache->mfc_un.res.pkt++;
cache->mfc_un.res.bytes += skb->len;
+ if (ipv6_addr_any(&cache->mf6c_origin) && true_vifi >= 0) {
+ struct mfc6_cache *cache_proxy;
+
+ /* For an (*,G) entry, we only check that the incomming
+ * interface is part of the static tree.
+ */
+ cache_proxy = ip6mr_cache_find_any_parent(mrt, vif);
+ if (cache_proxy &&
+ cache_proxy->mfc_un.res.ttls[true_vifi] < 255)
+ goto forward;
+ }
+
/*
* Wrong interface: drop packet and (maybe) send PIM assert.
*/
if (mrt->vif6_table[vif].dev != skb->dev) {
- int true_vifi;
-
cache->mfc_un.res.wrong_if++;
- true_vifi = ip6mr_find_vif(mrt, skb->dev);
if (true_vifi >= 0 && mrt->mroute_do_assert &&
/* pimsm uses asserts, when switching from RPT to SPT,
goto dont_forward;
}
+forward:
mrt->vif6_table[vif].pkt_in++;
mrt->vif6_table[vif].bytes_in += skb->len;
/*
* Forward the frame
*/
+ if (ipv6_addr_any(&cache->mf6c_origin) &&
+ ipv6_addr_any(&cache->mf6c_mcastgrp)) {
+ if (true_vifi >= 0 &&
+ true_vifi != cache->mf6c_parent &&
+ ipv6_hdr(skb)->hop_limit >
+ cache->mfc_un.res.ttls[cache->mf6c_parent]) {
+ /* It's an (*,*) entry and the packet is not coming from
+ * the upstream: forward the packet to the upstream
+ * only.
+ */
+ psend = cache->mf6c_parent;
+ goto last_forward;
+ }
+ goto dont_forward;
+ }
for (ct = cache->mfc_un.res.maxvif - 1; ct >= cache->mfc_un.res.minvif; ct--) {
- if (ipv6_hdr(skb)->hop_limit > cache->mfc_un.res.ttls[ct]) {
+ /* For (*,G) entry, don't forward to the incoming interface */
+ if ((!ipv6_addr_any(&cache->mf6c_origin) || ct != true_vifi) &&
+ ipv6_hdr(skb)->hop_limit > cache->mfc_un.res.ttls[ct]) {
if (psend != -1) {
struct sk_buff *skb2 = skb_clone(skb, GFP_ATOMIC);
if (skb2)
psend = ct;
}
}
+last_forward:
if (psend != -1) {
ip6mr_forward2(net, mrt, skb, cache, psend);
return 0;
read_lock(&mrt_lock);
cache = ip6mr_cache_find(mrt,
&ipv6_hdr(skb)->saddr, &ipv6_hdr(skb)->daddr);
+ if (cache == NULL) {
+ int vif = ip6mr_find_vif(mrt, skb->dev);
+
+ if (vif >= 0)
+ cache = ip6mr_cache_find_any(mrt,
+ &ipv6_hdr(skb)->daddr,
+ vif);
+ }
/*
* No usable cache entry
read_lock(&mrt_lock);
cache = ip6mr_cache_find(mrt, &rt->rt6i_src.addr, &rt->rt6i_dst.addr);
+ if (!cache && skb->dev) {
+ int vif = ip6mr_find_vif(mrt, skb->dev);
+
+ if (vif >= 0)
+ cache = ip6mr_cache_find_any(mrt, &rt->rt6i_dst.addr,
+ vif);
+ }
if (!cache) {
struct sk_buff *skb2;
projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / blobdiff