Merge branch '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue

Tony Nguyen says:

====================
Intel Wired LAN Driver Updates 2021-06-09

This series contains updates to ice driver only.

Maciej informs the user when XDP is not supported due to the driver
being in the 'safe mode' state. He also adds a parameter to Tx queue
configuration to resolve an issue in configuring XDP queues as it cannot
rely on using the number Tx or Rx queues.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

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

@@ -1717,12 +1717,13 @@ int ice_vsi_cfg_rxqs(struct ice_vsi *vsi)
  * ice_vsi_cfg_txqs - Configure the VSI for Tx
  * @vsi: the VSI being configured
  * @rings: Tx ring array to be configured
+ * @count: number of Tx ring array elements
  *
  * Return 0 on success and a negative value on error
  * Configure the Tx VSI for operation.
  */
 static int
-ice_vsi_cfg_txqs(struct ice_vsi *vsi, struct ice_ring **rings)
+ice_vsi_cfg_txqs(struct ice_vsi *vsi, struct ice_ring **rings, u16 count)
 {
 	struct ice_aqc_add_tx_qgrp *qg_buf;
 	u16 q_idx = 0;
@@ -1734,7 +1735,7 @@ ice_vsi_cfg_txqs(struct ice_vsi *vsi, struct ice_ring **rings)
 
 	qg_buf->num_txqs = 1;
 
-	for (q_idx = 0; q_idx < vsi->num_txq; q_idx++) {
+	for (q_idx = 0; q_idx < count; q_idx++) {
 		err = ice_vsi_cfg_txq(vsi, rings[q_idx], qg_buf);
 		if (err)
 			goto err_cfg_txqs;
@@ -1754,7 +1755,7 @@ ice_vsi_cfg_txqs(struct ice_vsi *vsi, struct ice_ring **rings)
  */
 int ice_vsi_cfg_lan_txqs(struct ice_vsi *vsi)
 {
-	return ice_vsi_cfg_txqs(vsi, vsi->tx_rings);
+	return ice_vsi_cfg_txqs(vsi, vsi->tx_rings, vsi->num_txq);
 }
 
 /**
@@ -1769,7 +1770,7 @@ int ice_vsi_cfg_xdp_txqs(struct ice_vsi *vsi)
 	int ret;
 	int i;
 
-	ret = ice_vsi_cfg_txqs(vsi, vsi->xdp_rings);
+	ret = ice_vsi_cfg_txqs(vsi, vsi->xdp_rings, vsi->num_xdp_txq);
 	if (ret)
 		return ret;
 
@@ -2009,17 +2010,18 @@ int ice_vsi_stop_all_rx_rings(struct ice_vsi *vsi)
  * @rst_src: reset source
  * @rel_vmvf_num: Relative ID of VF/VM
  * @rings: Tx ring array to be stopped
+ * @count: number of Tx ring array elements
  */
 static int
 ice_vsi_stop_tx_rings(struct ice_vsi *vsi, enum ice_disq_rst_src rst_src,
-		      u16 rel_vmvf_num, struct ice_ring **rings)
+		      u16 rel_vmvf_num, struct ice_ring **rings, u16 count)
 {
 	u16 q_idx;
 
 	if (vsi->num_txq > ICE_LAN_TXQ_MAX_QDIS)
 		return -EINVAL;
 
-	for (q_idx = 0; q_idx < vsi->num_txq; q_idx++) {
+	for (q_idx = 0; q_idx < count; q_idx++) {
 		struct ice_txq_meta txq_meta = { };
 		int status;
 
@@ -2047,7 +2049,7 @@ int
 ice_vsi_stop_lan_tx_rings(struct ice_vsi *vsi, enum ice_disq_rst_src rst_src,
 			  u16 rel_vmvf_num)
 {
-	return ice_vsi_stop_tx_rings(vsi, rst_src, rel_vmvf_num, vsi->tx_rings);
+	return ice_vsi_stop_tx_rings(vsi, rst_src, rel_vmvf_num, vsi->tx_rings, vsi->num_txq);
 }
 
 /**
@@ -2056,7 +2058,7 @@ ice_vsi_stop_lan_tx_rings(struct ice_vsi *vsi, enum ice_disq_rst_src rst_src,
  */
 int ice_vsi_stop_xdp_tx_rings(struct ice_vsi *vsi)
 {
-	return ice_vsi_stop_tx_rings(vsi, ICE_NO_RESET, 0, vsi->xdp_rings);
+	return ice_vsi_stop_tx_rings(vsi, ICE_NO_RESET, 0, vsi->xdp_rings, vsi->num_xdp_txq);
 }
 
 /**

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

@@ -2555,6 +2555,20 @@ ice_xdp_setup_prog(struct ice_vsi *vsi, struct bpf_prog *prog,
 	return (ret || xdp_ring_err) ? -ENOMEM : 0;
 }
 
+/**
+ * ice_xdp_safe_mode - XDP handler for safe mode
+ * @dev: netdevice
+ * @xdp: XDP command
+ */
+static int ice_xdp_safe_mode(struct net_device __always_unused *dev,
+			     struct netdev_bpf *xdp)
+{
+	NL_SET_ERR_MSG_MOD(xdp->extack,
+			   "Please provide working DDP firmware package in order to use XDP\n"
+			   "Refer to Documentation/networking/device_drivers/ethernet/intel/ice.rst");
+	return -EOPNOTSUPP;
+}
+
 /**
  * ice_xdp - implements XDP handler
  * @dev: netdevice
@@ -6937,6 +6951,7 @@ static const struct net_device_ops ice_netdev_safe_mode_ops = {
 	.ndo_change_mtu = ice_change_mtu,
 	.ndo_get_stats64 = ice_get_stats64,
 	.ndo_tx_timeout = ice_tx_timeout,
+	.ndo_bpf = ice_xdp_safe_mode,
 };
 
 static const struct net_device_ops ice_netdev_ops = {