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-rw-r--r--net/ipv4/fib_frontend.c7
-rw-r--r--net/ipv4/fib_semantics.c2
-rw-r--r--net/ipv4/fib_trie.c7
-rw-r--r--net/ipv4/route.c4
-rw-r--r--net/ipv4/xfrm4_policy.c4
-rw-r--r--net/ipv6/ip6_output.c3
-rw-r--r--net/ipv6/route.c12
-rw-r--r--net/ipv6/xfrm6_policy.c3
-rw-r--r--net/l3mdev/l3mdev.c43
9 files changed, 28 insertions, 57 deletions
diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c
index 7408051632ac..af8209f912ab 100644
--- a/net/ipv4/fib_frontend.c
+++ b/net/ipv4/fib_frontend.c
@@ -291,7 +291,7 @@ __be32 fib_compute_spec_dst(struct sk_buff *skb)
bool vmark = in_dev && IN_DEV_SRC_VMARK(in_dev);
struct flowi4 fl4 = {
.flowi4_iif = LOOPBACK_IFINDEX,
- .flowi4_oif = l3mdev_master_ifindex_rcu(dev),
+ .flowi4_l3mdev = l3mdev_master_ifindex_rcu(dev),
.daddr = ip_hdr(skb)->saddr,
.flowi4_tos = ip_hdr(skb)->tos & IPTOS_RT_MASK,
.flowi4_scope = scope,
@@ -353,9 +353,8 @@ static int __fib_validate_source(struct sk_buff *skb, __be32 src, __be32 dst,
bool dev_match;
fl4.flowi4_oif = 0;
- fl4.flowi4_iif = l3mdev_master_ifindex_rcu(dev);
- if (!fl4.flowi4_iif)
- fl4.flowi4_iif = oif ? : LOOPBACK_IFINDEX;
+ fl4.flowi4_l3mdev = l3mdev_master_ifindex_rcu(dev);
+ fl4.flowi4_iif = oif ? : LOOPBACK_IFINDEX;
fl4.daddr = src;
fl4.saddr = dst;
fl4.flowi4_tos = tos;
diff --git a/net/ipv4/fib_semantics.c b/net/ipv4/fib_semantics.c
index c5a29703185a..cc8e84ef2ae4 100644
--- a/net/ipv4/fib_semantics.c
+++ b/net/ipv4/fib_semantics.c
@@ -2234,7 +2234,7 @@ void fib_select_multipath(struct fib_result *res, int hash)
void fib_select_path(struct net *net, struct fib_result *res,
struct flowi4 *fl4, const struct sk_buff *skb)
{
- if (fl4->flowi4_oif && !(fl4->flowi4_flags & FLOWI_FLAG_SKIP_NH_OIF))
+ if (fl4->flowi4_oif)
goto check_saddr;
#ifdef CONFIG_IP_ROUTE_MULTIPATH
diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c
index 2af2b99e0bea..fb0e49c36c2e 100644
--- a/net/ipv4/fib_trie.c
+++ b/net/ipv4/fib_trie.c
@@ -1429,11 +1429,8 @@ bool fib_lookup_good_nhc(const struct fib_nh_common *nhc, int fib_flags,
!(fib_flags & FIB_LOOKUP_IGNORE_LINKSTATE))
return false;
- if (!(flp->flowi4_flags & FLOWI_FLAG_SKIP_NH_OIF)) {
- if (flp->flowi4_oif &&
- flp->flowi4_oif != nhc->nhc_oif)
- return false;
- }
+ if (flp->flowi4_oif && flp->flowi4_oif != nhc->nhc_oif)
+ return false;
return true;
}
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index f444f5983405..63f3256a407d 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -2263,6 +2263,7 @@ static int ip_route_input_slow(struct sk_buff *skb, __be32 daddr, __be32 saddr,
/*
* Now we are ready to route packet.
*/
+ fl4.flowi4_l3mdev = 0;
fl4.flowi4_oif = 0;
fl4.flowi4_iif = dev->ifindex;
fl4.flowi4_mark = skb->mark;
@@ -2738,8 +2739,7 @@ struct rtable *ip_route_output_key_hash_rcu(struct net *net, struct flowi4 *fl4,
res->fi = NULL;
res->table = NULL;
if (fl4->flowi4_oif &&
- (ipv4_is_multicast(fl4->daddr) ||
- !netif_index_is_l3_master(net, fl4->flowi4_oif))) {
+ (ipv4_is_multicast(fl4->daddr) || !fl4->flowi4_l3mdev)) {
/* Apparently, routing tables are wrong. Assume,
* that the destination is on link.
*
diff --git a/net/ipv4/xfrm4_policy.c b/net/ipv4/xfrm4_policy.c
index 9e83bcb6bc99..6fde0b184791 100644
--- a/net/ipv4/xfrm4_policy.c
+++ b/net/ipv4/xfrm4_policy.c
@@ -28,13 +28,11 @@ static struct dst_entry *__xfrm4_dst_lookup(struct net *net, struct flowi4 *fl4,
memset(fl4, 0, sizeof(*fl4));
fl4->daddr = daddr->a4;
fl4->flowi4_tos = tos;
- fl4->flowi4_oif = l3mdev_master_ifindex_by_index(net, oif);
+ fl4->flowi4_l3mdev = l3mdev_master_ifindex_by_index(net, oif);
fl4->flowi4_mark = mark;
if (saddr)
fl4->saddr = saddr->a4;
- fl4->flowi4_flags = FLOWI_FLAG_SKIP_NH_OIF;
-
rt = __ip_route_output_key(net, fl4);
if (!IS_ERR(rt))
return &rt->dst;
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index e69fac576970..a76fba3dd47a 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -1035,8 +1035,7 @@ static struct dst_entry *ip6_sk_dst_check(struct sock *sk,
#ifdef CONFIG_IPV6_SUBTREES
ip6_rt_check(&rt->rt6i_src, &fl6->saddr, np->saddr_cache) ||
#endif
- (!(fl6->flowi6_flags & FLOWI_FLAG_SKIP_NH_OIF) &&
- (fl6->flowi6_oif && fl6->flowi6_oif != dst->dev->ifindex))) {
+ (fl6->flowi6_oif && fl6->flowi6_oif != dst->dev->ifindex)) {
dst_release(dst);
dst = NULL;
}
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 6188712f24b0..2fa10e60cccd 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -1209,9 +1209,6 @@ INDIRECT_CALLABLE_SCOPE struct rt6_info *ip6_pol_route_lookup(struct net *net,
struct fib6_node *fn;
struct rt6_info *rt;
- if (fl6->flowi6_flags & FLOWI_FLAG_SKIP_NH_OIF)
- flags &= ~RT6_LOOKUP_F_IFACE;
-
rcu_read_lock();
fn = fib6_node_lookup(&table->tb6_root, &fl6->daddr, &fl6->saddr);
restart:
@@ -2181,9 +2178,6 @@ int fib6_table_lookup(struct net *net, struct fib6_table *table, int oif,
fn = fib6_node_lookup(&table->tb6_root, &fl6->daddr, &fl6->saddr);
saved_fn = fn;
- if (fl6->flowi6_flags & FLOWI_FLAG_SKIP_NH_OIF)
- oif = 0;
-
redo_rt6_select:
rt6_select(net, fn, oif, res, strict);
if (res->f6i == net->ipv6.fib6_null_entry) {
@@ -3058,12 +3052,6 @@ INDIRECT_CALLABLE_SCOPE struct rt6_info *__ip6_route_redirect(struct net *net,
struct fib6_info *rt;
struct fib6_node *fn;
- /* l3mdev_update_flow overrides oif if the device is enslaved; in
- * this case we must match on the real ingress device, so reset it
- */
- if (fl6->flowi6_flags & FLOWI_FLAG_SKIP_NH_OIF)
- fl6->flowi6_oif = skb->dev->ifindex;
-
/* Get the "current" route for this destination and
* check if the redirect has come from appropriate router.
*
diff --git a/net/ipv6/xfrm6_policy.c b/net/ipv6/xfrm6_policy.c
index 55bb2cbae13d..e64e427a51cf 100644
--- a/net/ipv6/xfrm6_policy.c
+++ b/net/ipv6/xfrm6_policy.c
@@ -33,8 +33,7 @@ static struct dst_entry *xfrm6_dst_lookup(struct net *net, int tos, int oif,
int err;
memset(&fl6, 0, sizeof(fl6));
- fl6.flowi6_oif = l3mdev_master_ifindex_by_index(net, oif);
- fl6.flowi6_flags = FLOWI_FLAG_SKIP_NH_OIF;
+ fl6.flowi6_l3mdev = l3mdev_master_ifindex_by_index(net, oif);
fl6.flowi6_mark = mark;
memcpy(&fl6.daddr, daddr, sizeof(fl6.daddr));
if (saddr)
diff --git a/net/l3mdev/l3mdev.c b/net/l3mdev/l3mdev.c
index 17927966abb3..4eb8892fb2ff 100644
--- a/net/l3mdev/l3mdev.c
+++ b/net/l3mdev/l3mdev.c
@@ -250,25 +250,19 @@ int l3mdev_fib_rule_match(struct net *net, struct flowi *fl,
struct net_device *dev;
int rc = 0;
- rcu_read_lock();
+ /* update flow ensures flowi_l3mdev is set when relevant */
+ if (!fl->flowi_l3mdev)
+ return 0;
- dev = dev_get_by_index_rcu(net, fl->flowi_oif);
- if (dev && netif_is_l3_master(dev) &&
- dev->l3mdev_ops->l3mdev_fib_table) {
- arg->table = dev->l3mdev_ops->l3mdev_fib_table(dev);
- rc = 1;
- goto out;
- }
+ rcu_read_lock();
- dev = dev_get_by_index_rcu(net, fl->flowi_iif);
+ dev = dev_get_by_index_rcu(net, fl->flowi_l3mdev);
if (dev && netif_is_l3_master(dev) &&
dev->l3mdev_ops->l3mdev_fib_table) {
arg->table = dev->l3mdev_ops->l3mdev_fib_table(dev);
rc = 1;
- goto out;
}
-out:
rcu_read_unlock();
return rc;
@@ -277,31 +271,28 @@ out:
void l3mdev_update_flow(struct net *net, struct flowi *fl)
{
struct net_device *dev;
- int ifindex;
rcu_read_lock();
if (fl->flowi_oif) {
dev = dev_get_by_index_rcu(net, fl->flowi_oif);
if (dev) {
- ifindex = l3mdev_master_ifindex_rcu(dev);
- if (ifindex) {
- fl->flowi_oif = ifindex;
- fl->flowi_flags |= FLOWI_FLAG_SKIP_NH_OIF;
- goto out;
- }
+ if (!fl->flowi_l3mdev)
+ fl->flowi_l3mdev = l3mdev_master_ifindex_rcu(dev);
+
+ /* oif set to L3mdev directs lookup to its table;
+ * reset to avoid oif match in fib_lookup
+ */
+ if (netif_is_l3_master(dev))
+ fl->flowi_oif = 0;
+ goto out;
}
}
- if (fl->flowi_iif) {
+ if (fl->flowi_iif > LOOPBACK_IFINDEX && !fl->flowi_l3mdev) {
dev = dev_get_by_index_rcu(net, fl->flowi_iif);
- if (dev) {
- ifindex = l3mdev_master_ifindex_rcu(dev);
- if (ifindex) {
- fl->flowi_iif = ifindex;
- fl->flowi_flags |= FLOWI_FLAG_SKIP_NH_OIF;
- }
- }
+ if (dev)
+ fl->flowi_l3mdev = l3mdev_master_ifindex_rcu(dev);
}
out:
generated by cgit (git 2.34.1) at 2024-06-16 17:25:24 +0000