switchdev: don't support custom ip rules, for now
Keep switchdev FIB offload model simple for now and don't allow custom ip
rules.
Signed-off-by: Scott Feldman <sfeldma@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c
index fae34ad..2de4395 100644
--- a/net/ipv4/fib_trie.c
+++ b/net/ipv4/fib_trie.c
@@ -1536,6 +1536,67 @@
return n;
}
+/* Caller must hold RTNL */
+void fib_table_flush_external(struct fib_table *tb)
+{
+ struct trie *t = (struct trie *)tb->tb_data;
+ struct fib_alias *fa;
+ struct tnode *n, *pn;
+ unsigned long cindex;
+ unsigned char slen;
+ int found = 0;
+
+ n = rcu_dereference(t->trie);
+ if (!n)
+ return;
+
+ pn = NULL;
+ cindex = 0;
+
+ while (IS_TNODE(n)) {
+ /* record pn and cindex for leaf walking */
+ pn = n;
+ cindex = 1ul << n->bits;
+backtrace:
+ /* walk trie in reverse order */
+ do {
+ while (!(cindex--)) {
+ t_key pkey = pn->key;
+
+ n = pn;
+ pn = node_parent(n);
+
+ /* resize completed node */
+ resize(t, n);
+
+ /* if we got the root we are done */
+ if (!pn)
+ return;
+
+ cindex = get_index(pkey, pn);
+ }
+
+ /* grab the next available node */
+ n = tnode_get_child(pn, cindex);
+ } while (!n);
+ }
+
+ hlist_for_each_entry(fa, &n->leaf, fa_list) {
+ struct fib_info *fi = fa->fa_info;
+
+ if (fi && (fi->fib_flags & RTNH_F_EXTERNAL)) {
+ netdev_switch_fib_ipv4_del(n->key,
+ KEYLENGTH - fa->fa_slen,
+ fi, fa->fa_tos,
+ fa->fa_type, tb->tb_id);
+ }
+ }
+
+ /* if trie is leaf only loop is completed */
+ if (pn)
+ goto backtrace;
+}
+
/* Caller must hold RTNL. */
int fib_table_flush(struct fib_table *tb)
{