ice: enable/disable switchdev when managing VFs

Only way to enable switchdev is to create VFs when the eswitch
mode is set to switchdev. Check if correct mode is set and
enable switchdev in function which creating VFs.

Disable switchdev when user change number of VFs to 0. Changing
eswitch mode back to legacy when VFs are created in switchdev
mode isn't allowed.

As switchdev takes care of managing filter rules, adding new
rules on VF is blocked.

In case of resetting VF driver has to update pointer in ice_repr
struct, because after reset VSI related things can change.

Co-developed-by: Wojciech Drewek <wojciech.drewek@intel.com>
Signed-off-by: Wojciech Drewek <wojciech.drewek@intel.com>
Signed-off-by: Grzegorz Nitka <grzegorz.nitka@intel.com>
Tested-by: Sandeep Penigalapati <sandeep.penigalapati@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

1 files changed, 17 insertions, 0 deletions

diff --git a/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c b/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c
index 0b80b5a52e8a..634ffeb23ee0 100644
--- a/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c
+++ b/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c
@@ -6,6 +6,7 @@
 #include "ice_lib.h"
 #include "ice_fltr.h"
 #include "ice_flow.h"
+#include "ice_eswitch.h"
 #include "ice_virtchnl_allowlist.h"
 
 #define FIELD_SELECTOR(proto_hdr_field) \
@@ -620,6 +621,8 @@ void ice_free_vfs(struct ice_pf *pf)
 	if (!pf->vf)
 		return;
 
+	ice_eswitch_release(pf);
+
 	while (test_and_set_bit(ICE_VF_DIS, pf->state))
 		usleep_range(1000, 2000);
 
@@ -932,6 +935,9 @@ static int ice_vf_rebuild_host_mac_cfg(struct ice_vf *vf)
 	enum ice_status status;
 	u8 broadcast[ETH_ALEN];
 
+	if (ice_is_eswitch_mode_switchdev(vf->pf))
+		return 0;
+
 	eth_broadcast_addr(broadcast);
 	status = ice_fltr_add_mac(vsi, broadcast, ICE_FWD_TO_VSI);
 	if (status) {
@@ -1711,6 +1717,8 @@ bool ice_reset_vf(struct ice_vf *vf, bool is_vflr)
 	}
 
 	ice_vf_post_vsi_rebuild(vf);
+	vsi = ice_get_vf_vsi(vf);
+	ice_eswitch_update_repr(vsi);
 
 	/* if the VF has been reset allow it to come up again */
 	if (ice_mbx_clear_malvf(&hw->mbx_snapshot, pf->malvfs, ICE_MAX_VF_COUNT, vf->vf_id))
@@ -1962,6 +1970,10 @@ static int ice_ena_vfs(struct ice_pf *pf, u16 num_vfs)
 	}
 
 	clear_bit(ICE_VF_DIS, pf->state);
+
+	if (ice_eswitch_configure(pf))
+		goto err_unroll_sriov;
+
 	return 0;
 
 err_unroll_sriov:
@@ -4783,6 +4795,11 @@ int ice_set_vf_mac(struct net_device *netdev, int vf_id, u8 *mac)
 	struct ice_vf *vf;
 	int ret;
 
+	if (ice_is_eswitch_mode_switchdev(pf)) {
+		dev_info(ice_pf_to_dev(pf), "Trusted VF is forbidden in switchdev mode\n");
+		return -EOPNOTSUPP;
+	}
+
 	if (ice_validate_vf_id(pf, vf_id))
 		return -EINVAL;