ice: Implement ice_bridge_getlink and ice_bridge_setlink

ice_bridge_getlink returns the current bridge mode using
ndo_dflt_bridge_getlink and the mode parameter available in
first_switch->bridge_mode.

ice_bridge_setlink is invoked when the bridge mode needs to
changed. The value to be changed to is available as a netlink
message which is parsed in this function. If the mode has to
be changed, switch_flags is set appropriately (set ALLOW_LB
for VEB mode and clear it for VEPA mode) and ice_aq_update_vsi
is called. Also change the unicast switch filter rules.

Signed-off-by: Md Fahad Iqbal Polash <md.fahad.iqbal.polash@intel.com>
Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Tony Brelinski <tonyx.brelinski@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

1 files changed, 41 insertions, 0 deletions

diff --git a/drivers/net/ethernet/intel/ice/ice_switch.c b/drivers/net/ethernet/intel/ice/ice_switch.c
index ac66c96a123d..65b4e1cca6be 100644
--- a/drivers/net/ethernet/intel/ice/ice_switch.c
+++ b/drivers/net/ethernet/intel/ice/ice_switch.c
@@ -1131,6 +1131,47 @@ ice_update_pkt_fwd_rule(struct ice_hw *hw, struct ice_fltr_info *f_info)
 }
 
 /**
+ * ice_update_sw_rule_bridge_mode
+ * @hw: pointer to the hw struct
+ *
+ * Updates unicast switch filter rules based on VEB/VEPA mode
+ */
+enum ice_status ice_update_sw_rule_bridge_mode(struct ice_hw *hw)
+{
+	struct ice_switch_info *sw = hw->switch_info;
+	struct ice_fltr_mgmt_list_entry *fm_entry;
+	enum ice_status status = 0;
+	struct list_head *rule_head;
+	struct mutex *rule_lock; /* Lock to protect filter rule list */
+
+	rule_lock = &sw->recp_list[ICE_SW_LKUP_MAC].filt_rule_lock;
+	rule_head = &sw->recp_list[ICE_SW_LKUP_MAC].filt_rules;
+
+	mutex_lock(rule_lock);
+	list_for_each_entry(fm_entry, rule_head, list_entry) {
+		struct ice_fltr_info *fi = &fm_entry->fltr_info;
+		u8 *addr = fi->l_data.mac.mac_addr;
+
+		/* Update unicast Tx rules to reflect the selected
+		 * VEB/VEPA mode
+		 */
+		if ((fi->flag & ICE_FLTR_TX) && is_unicast_ether_addr(addr) &&
+		    (fi->fltr_act == ICE_FWD_TO_VSI ||
+		     fi->fltr_act == ICE_FWD_TO_VSI_LIST ||
+		     fi->fltr_act == ICE_FWD_TO_Q ||
+		     fi->fltr_act == ICE_FWD_TO_QGRP)) {
+			status = ice_update_pkt_fwd_rule(hw, fi);
+			if (status)
+				break;
+		}
+	}
+
+	mutex_unlock(rule_lock);
+
+	return status;
+}
+
+/**
  * ice_add_update_vsi_list
  * @hw: pointer to the hardware structure
  * @m_entry: pointer to current filter management list entry