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Commit f60c2549 authored by Yotam Gigi's avatar Yotam Gigi Committed by David S. Miller
Browse files

mlxsw: spectrum: mr: Support trap-and-forward routes 



Add the support of trap-and-forward route action in the multicast routing
offloading logic. A route will be set to trap-and-forward action if one (or
more) of its output interfaces is not offload-able, i.e. does not have a
valid Spectrum RIF.

This way, a route with mixed output VIFs list, which contains both
offload-able and un-offload-able devices can go through partial offloading
in hardware, and the rest will be done in the kernel ipmr module.

Signed-off-by: default avatarYotam Gigi <yotamg@mellanox.com>
Reviewed-by: default avatarIdo Schimmel <idosch@mellanox.com>
Signed-off-by: default avatarJiri Pirko <jiri@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 607feade

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

+8 −9
Original line number Diff line number Diff line
@@ -114,9 +114,9 @@ static bool mlxsw_sp_mr_vif_valid(const struct mlxsw_sp_mr_vif *vif) 
	return mlxsw_sp_mr_vif_regular(vif) && vif->dev && vif->rif;

}



static bool mlxsw_sp_mr_vif_rif_invalid(const struct mlxsw_sp_mr_vif *vif)

static bool mlxsw_sp_mr_vif_exists(const struct mlxsw_sp_mr_vif *vif)

{

	return mlxsw_sp_mr_vif_regular(vif) && vif->dev && !vif->rif;

	return vif->dev;

}



static bool
@@ -182,14 +182,13 @@ mlxsw_sp_mr_route_action(const struct mlxsw_sp_mr_route *mr_route) 
	if (!mlxsw_sp_mr_route_valid_evifs_num(mr_route))

		return MLXSW_SP_MR_ROUTE_ACTION_TRAP;



	/* If either one of the eVIFs is not regular (VIF of type pimreg or

	 * tunnel) or one of the VIFs has no matching RIF, trap the packet.

	/* If one of the eVIFs has no RIF, trap-and-forward the route as there

	 * is some more routing to do in software too.

	 */

	list_for_each_entry(rve, &mr_route->evif_list, route_node) {

		if (!mlxsw_sp_mr_vif_regular(rve->mr_vif) ||

		    mlxsw_sp_mr_vif_rif_invalid(rve->mr_vif))

			return MLXSW_SP_MR_ROUTE_ACTION_TRAP;

	}

	list_for_each_entry(rve, &mr_route->evif_list, route_node)

		if (mlxsw_sp_mr_vif_exists(rve->mr_vif) && !rve->mr_vif->rif)

			return MLXSW_SP_MR_ROUTE_ACTION_TRAP_AND_FORWARD;



	return MLXSW_SP_MR_ROUTE_ACTION_FORWARD;

}