ice: Fix LACP bonds without SRIOV environment

JIRA: https://issues.redhat.com/browse/RHEL-83543

Upstream commit(s):
commit 6c778f1
Author: Dave Ertman <[email protected]>
Date:   Mon Apr 28 15:33:39 2025 -0400

    ice: Fix LACP bonds without SRIOV environment

    If an aggregate has the following conditions:
    - The SRIOV LAG DDP package has been enabled
    - The bond is in 802.3ad LACP mode
    - The bond is disqualified from supporting SRIOV VF LAG
    - Both interfaces were added simultaneously to the bond (same command)

    Then there is a chance that the two interfaces will be assigned different
    LACP Aggregator ID's.  This will cause a failure of the LACP control over
    the bond.

    To fix this, we can detect if the primary interface for the bond (as
    defined by the driver) is not in switchdev mode, and exit the setup flow
    if so.

    Reproduction steps:

    %> ip link add bond0 type bond mode 802.3ad miimon 100
    %> ip link set bond0 up
    %> ifenslave bond0 eth0 eth1
    %> cat /proc/net/bonding/bond0 | grep Agg

    Check for Aggregator IDs that differ.

    Fixes: ec5a6c5 ("ice: process events created by lag netdev event handler")
    Reviewed-by: Aleksandr Loktionov <[email protected]>
    Signed-off-by: Dave Ertman <[email protected]>
    Tested-by: Sujai Buvaneswaran <[email protected]>
    Signed-off-by: Tony Nguyen <[email protected]>

Signed-off-by: Petr Oros <[email protected]>

Author: orosp

drivers/net/ethernet/intel/ice/ice_lag.c

@@ -1321,12 +1321,18 @@ static void ice_lag_changeupper_event(struct ice_lag *lag, void *ptr)
 		 */
 		if (!primary_lag) {
 			lag->primary = true;
+			if (!ice_is_switchdev_running(lag->pf))
+				return;
+
 			/* Configure primary's SWID to be shared */
 			ice_lag_primary_swid(lag, true);
 			primary_lag = lag;
 		} else {
 			u16 swid;
 
+			if (!ice_is_switchdev_running(primary_lag->pf))
+				return;
+
 			swid = primary_lag->pf->hw.port_info->sw_id;
 			ice_lag_set_swid(swid, lag, true);
 			ice_lag_add_prune_list(primary_lag, lag->pf);