ipv4: Only Replay routes of interest to new listeners (20d15652) · Commits · 戴 / test

When a new listener is registered to the FIB notification chain it receives a dump of all the available routes in the system. Instead, make sure to only replay the IPv4 routes that are actually used in the data path and are of any interest to the new listener. Signed-off-by:

Ido Schimmel <idosch@mellanox.com> Reviewed-by:

David Ahern <dsahern@gmail.com> Signed-off-by:

David S. Miller <davem@davemloft.net>

net/ipv4/fib_trie.c

+11 −0

Original line number	Diff line number	Diff line
		@@ -2080,6 +2080,7 @@ static int fib_leaf_notify(struct key_vector l, struct fib_table tb,
		struct netlink_ext_ack *extack)
		{
		struct fib_alias *fa;
		int last_slen = -1;
		int err;

		hlist_for_each_entry_rcu(fa, &l->leaf, fa_list) {
		@@ -2099,6 +2100,16 @@ static int fib_leaf_notify(struct key_vector l, struct fib_table tb,
		fa, extack);
		if (err)
		return err;

		if (fa->fa_slen == last_slen)
		continue;

		last_slen = fa->fa_slen;
		err = call_fib_entry_notifier(nb, FIB_EVENT_ENTRY_REPLACE_TMP,
		l->key, KEYLENGTH - fa->fa_slen,
		fa, extack);
		if (err)
		return err;
		}
		return 0;
		}

Admin message