ice: Introduce enabling promiscuous mode on multiple VF's

In current implementation default VSI switch filter is only able to
forward traffic to a single VSI. This limits promiscuous mode with
private flag 'vf-true-promisc-support' to a single VF. Enabling it on
the second VF won't work. Also allmulticast support doesn't seem to be
properly implemented when vf-true-promisc-support is true.

Use standard ice_add_rule_internal() function that already implements
forwarding to multiple VSI's instead of constructing AQ call manually.

Add switch filter for allmulticast mode when vf-true-promisc-support is
enabled. The same filter is added regardless of the flag - it doesn't
matter for this case.

Remove unnecessary fields in switch structure. From now on book keeping
will be done by ice_add_rule_internal().

Refactor unnecessarily passed function arguments.

To test:
1) Create 2 VM's, and two VF's. Attach VF's to VM's.
2) Enable promiscuous mode on both of them and check if
   traffic is seen on both of them.

Signed-off-by: Michal Wilczynski <michal.wilczynski@intel.com>
Tested-by: Marek Szlosek <marek.szlosek@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

1 files changed, 5 insertions, 5 deletions

diff --git a/drivers/net/ethernet/intel/ice/ice_vf_lib.c b/drivers/net/ethernet/intel/ice/ice_vf_lib.c
index 7adf9ddf129e..9038d2687ba6 100644
--- a/drivers/net/ethernet/intel/ice/ice_vf_lib.c
+++ b/drivers/net/ethernet/intel/ice/ice_vf_lib.c
@@ -271,13 +271,14 @@ static int ice_vf_rebuild_vsi(struct ice_vf *vf)
 }
 
 /**
- * ice_is_any_vf_in_promisc - check if any VF(s) are in promiscuous mode
+ * ice_is_any_vf_in_unicast_promisc - check if any VF(s)
+ * are in unicast promiscuous mode
  * @pf: PF structure for accessing VF(s)
  *
- * Return false if no VF(s) are in unicast and/or multicast promiscuous mode,
+ * Return false if no VF(s) are in unicast promiscuous mode,
  * else return true
  */
-bool ice_is_any_vf_in_promisc(struct ice_pf *pf)
+bool ice_is_any_vf_in_unicast_promisc(struct ice_pf *pf)
 {
 	bool is_vf_promisc = false;
 	struct ice_vf *vf;
@@ -286,8 +287,7 @@ bool ice_is_any_vf_in_promisc(struct ice_pf *pf)
 	rcu_read_lock();
 	ice_for_each_vf_rcu(pf, bkt, vf) {
 		/* found a VF that has promiscuous mode configured */
-		if (test_bit(ICE_VF_STATE_UC_PROMISC, vf->vf_states) ||
-		    test_bit(ICE_VF_STATE_MC_PROMISC, vf->vf_states)) {
+		if (test_bit(ICE_VF_STATE_UC_PROMISC, vf->vf_states)) {
 			is_vf_promisc = true;
 			break;
 		}