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Commit ce45bded authored by Ido Schimmel's avatar Ido Schimmel Committed by David S. Miller
Browse files

mlxsw: spectrum_router: Align with new route replace logic 



Commit f34436a4 ("net/ipv6: Simplify route replace and appending
into multipath route") changed the IPv6 route replace logic so that the
first matching route (i.e., same metric) is replaced.

Have mlxsw replace the first matching route as well.

Fixes: f34436a4 ("net/ipv6: Simplify route replace and appending into multipath route")
Signed-off-by: default avatarIdo Schimmel <idosch@mellanox.com>
Acked-by: default avatarJiri Pirko <jiri@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 53b562df

drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c

+5 −16
Original line number Diff line number Diff line
@@ -4756,12 +4756,6 @@ static void mlxsw_sp_rt6_destroy(struct mlxsw_sp_rt6 *mlxsw_sp_rt6) 
	kfree(mlxsw_sp_rt6);

}



static bool mlxsw_sp_fib6_rt_can_mp(const struct fib6_info *rt)

{

	/* RTF_CACHE routes are ignored */

	return (rt->fib6_flags & (RTF_GATEWAY | RTF_ADDRCONF)) == RTF_GATEWAY;

}



static struct fib6_info *

mlxsw_sp_fib6_entry_rt(const struct mlxsw_sp_fib6_entry *fib6_entry)

{
@@ -5169,7 +5163,7 @@ static struct mlxsw_sp_fib6_entry * 
mlxsw_sp_fib6_node_entry_find(const struct mlxsw_sp_fib_node *fib_node,

			      const struct fib6_info *nrt, bool replace)

{

	struct mlxsw_sp_fib6_entry *fib6_entry, *fallback = NULL;

	struct mlxsw_sp_fib6_entry *fib6_entry;



	list_for_each_entry(fib6_entry, &fib_node->entry_list, common.list) {

		struct fib6_info *rt = mlxsw_sp_fib6_entry_rt(fib6_entry);
@@ -5178,18 +5172,13 @@ mlxsw_sp_fib6_node_entry_find(const struct mlxsw_sp_fib_node *fib_node, 
			continue;

		if (rt->fib6_table->tb6_id != nrt->fib6_table->tb6_id)

			break;

		if (replace && rt->fib6_metric == nrt->fib6_metric) {

			if (mlxsw_sp_fib6_rt_can_mp(rt) ==

			    mlxsw_sp_fib6_rt_can_mp(nrt))

		if (replace && rt->fib6_metric == nrt->fib6_metric)

			return fib6_entry;

			if (mlxsw_sp_fib6_rt_can_mp(nrt))

				fallback = fallback ?: fib6_entry;

		}

		if (rt->fib6_metric > nrt->fib6_metric)

			return fallback ?: fib6_entry;

			return fib6_entry;

	}



	return fallback;

	return NULL;

}



static int