ice: Implement filter sync, NDO operations and bump version

This patch implements multiple pieces of functionality:

1. Added ice_vsi_sync_filters, which is called through the service task
   to push filter updates to the hardware.

2. Add support to enable/disable promiscuous mode on an interface.
   Enabling/disabling promiscuous mode on an interface results in
   addition/removal of a promisc filter rule through ice_vsi_sync_filters.

3. Implement handlers for ndo_set_mac_address, ndo_change_mtu,
   ndo_poll_controller and ndo_set_rx_mode.

This patch also marks the end of the driver addition by bumping up the
driver version.
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>

drivers/net/ethernet/intel/ice/ice.h

@@ -125,11 +125,20 @@ enum ice_state {
 	__ICE_SUSPENDED,		/* set on module remove path */
 	__ICE_RESET_FAILED,		/* set by reset/rebuild */
 	__ICE_ADMINQ_EVENT_PENDING,
+	__ICE_FLTR_OVERFLOW_PROMISC,
 	__ICE_CFG_BUSY,
 	__ICE_SERVICE_SCHED,
 	__ICE_STATE_NBITS		/* must be last */
 };
 
+enum ice_vsi_flags {
+	ICE_VSI_FLAG_UMAC_FLTR_CHANGED,
+	ICE_VSI_FLAG_MMAC_FLTR_CHANGED,
+	ICE_VSI_FLAG_VLAN_FLTR_CHANGED,
+	ICE_VSI_FLAG_PROMISC_CHANGED,
+	ICE_VSI_FLAG_NBITS		/* must be last */
+};
+
 /* struct that defines a VSI, associated with a dev */
 struct ice_vsi {
 	struct net_device *netdev;
@@ -144,7 +153,9 @@ struct ice_vsi {
 
 	u64 tx_linearize;
 	DECLARE_BITMAP(state, __ICE_STATE_NBITS);
+	DECLARE_BITMAP(flags, ICE_VSI_FLAG_NBITS);
 	unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
+	unsigned int current_netdev_flags;
 	u32 tx_restart;
 	u32 tx_busy;
 	u32 rx_buf_failed;
@@ -175,6 +186,9 @@ struct ice_vsi {
 	struct ice_eth_stats eth_stats;
 	struct ice_eth_stats eth_stats_prev;
 
+	struct list_head tmp_sync_list;		/* MAC filters to be synced */
+	struct list_head tmp_unsync_list;	/* MAC filters to be unsynced */
+
 	bool irqs_ready;
 	bool current_isup;		 /* Sync 'link up' logging */
 	bool stat_offsets_loaded;

drivers/net/ethernet/intel/ice/ice_adminq_cmd.h

@@ -135,6 +135,24 @@ struct ice_aqc_manage_mac_read_resp {
 	u8 mac_addr[ETH_ALEN];
 };
 
+/* Manage MAC address, write command - direct (0x0108) */
+struct ice_aqc_manage_mac_write {
+	u8 port_num;
+	u8 flags;
+#define ICE_AQC_MAN_MAC_WR_MC_MAG_EN		BIT(0)
+#define ICE_AQC_MAN_MAC_WR_WOL_LAA_PFR_KEEP	BIT(1)
+#define ICE_AQC_MAN_MAC_WR_S		6
+#define ICE_AQC_MAN_MAC_WR_M		(3 << ICE_AQC_MAN_MAC_WR_S)
+#define ICE_AQC_MAN_MAC_UPDATE_LAA	0
+#define ICE_AQC_MAN_MAC_UPDATE_LAA_WOL	(BIT(0) << ICE_AQC_MAN_MAC_WR_S)
+	/* High 16 bits of MAC address in big endian order */
+	__be16 sah;
+	/* Low 32 bits of MAC address in big endian order */
+	__be32 sal;
+	__le32 addr_high;
+	__le32 addr_low;
+};
+
 /* Clear PXE Command and response (direct 0x0110) */
 struct ice_aqc_clear_pxe {
 	u8 rx_cnt;
@@ -1214,6 +1232,7 @@ struct ice_aq_desc {
 		struct ice_aqc_q_shutdown q_shutdown;
 		struct ice_aqc_req_res res_owner;
 		struct ice_aqc_manage_mac_read mac_read;
+		struct ice_aqc_manage_mac_write mac_write;
 		struct ice_aqc_clear_pxe clear_pxe;
 		struct ice_aqc_list_caps get_cap;
 		struct ice_aqc_get_phy_caps get_phy;
@@ -1258,6 +1277,7 @@ enum ice_aq_err {
 	ICE_AQ_RC_ENOMEM	= 9,  /* Out of memory */
 	ICE_AQ_RC_EBUSY		= 12, /* Device or resource busy */
 	ICE_AQ_RC_EEXIST	= 13, /* object already exists */
+	ICE_AQ_RC_ENOSPC	= 16, /* No space left or allocation failure */
 };
 
 /* Admin Queue command opcodes */
@@ -1276,6 +1296,7 @@ enum ice_adminq_opc {
 
 	/* manage MAC address */
 	ice_aqc_opc_manage_mac_read			= 0x0107,
+	ice_aqc_opc_manage_mac_write			= 0x0108,
 
 	/* PXE */
 	ice_aqc_opc_clear_pxe_mode			= 0x0110,

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

@@ -1232,6 +1232,34 @@ enum ice_status ice_get_caps(struct ice_hw *hw)
 	return status;
 }
 
+/**
+ * ice_aq_manage_mac_write - manage MAC address write command
+ * @hw: pointer to the hw struct
+ * @mac_addr: MAC address to be written as LAA/LAA+WoL/Port address
+ * @flags: flags to control write behavior
+ * @cd: pointer to command details structure or NULL
+ *
+ * This function is used to write MAC address to the NVM (0x0108).
+ */
+enum ice_status
+ice_aq_manage_mac_write(struct ice_hw *hw, u8 *mac_addr, u8 flags,
+			struct ice_sq_cd *cd)
+{
+	struct ice_aqc_manage_mac_write *cmd;
+	struct ice_aq_desc desc;
+
+	cmd = &desc.params.mac_write;
+	ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_manage_mac_write);
+
+	cmd->flags = flags;
+
+	/* Prep values for flags, sah, sal */
+	cmd->sah = htons(*((u16 *)mac_addr));
+	cmd->sal = htonl(*((u32 *)(mac_addr + 2)));
+
+	return ice_aq_send_cmd(hw, &desc, NULL, 0, cd);
+}
+
 /**
  * ice_aq_clear_pxe_mode
  * @hw: pointer to the hw struct

drivers/net/ethernet/intel/ice/ice_common.h

@@ -58,6 +58,9 @@ enum ice_status
 ice_aq_send_cmd(struct ice_hw *hw, struct ice_aq_desc *desc,
 		void *buf, u16 buf_size, struct ice_sq_cd *cd);
 enum ice_status ice_aq_get_fw_ver(struct ice_hw *hw, struct ice_sq_cd *cd);
+enum ice_status
+ice_aq_manage_mac_write(struct ice_hw *hw, u8 *mac_addr, u8 flags,
+			struct ice_sq_cd *cd);
 enum ice_status ice_clear_pf_cfg(struct ice_hw *hw);
 enum ice_status
 ice_set_fc(struct ice_port_info *pi, u8 *aq_failures, bool atomic_restart);

drivers/net/ethernet/intel/ice/ice_lan_tx_rx.h

@@ -353,6 +353,18 @@ enum ice_tx_desc_len_fields {
 	ICE_TX_DESC_LEN_L4_LEN_S	= 14 /* 4 BITS */
 };
 
+#define ICE_TXD_QW1_MACLEN_M (0x7FUL << ICE_TX_DESC_LEN_MACLEN_S)
+#define ICE_TXD_QW1_IPLEN_M  (0x7FUL << ICE_TX_DESC_LEN_IPLEN_S)
+#define ICE_TXD_QW1_L4LEN_M  (0xFUL << ICE_TX_DESC_LEN_L4_LEN_S)
+
+/* Tx descriptor field limits in bytes */
+#define ICE_TXD_MACLEN_MAX ((ICE_TXD_QW1_MACLEN_M >> \
+			     ICE_TX_DESC_LEN_MACLEN_S) * ICE_BYTES_PER_WORD)
+#define ICE_TXD_IPLEN_MAX ((ICE_TXD_QW1_IPLEN_M >> \
+			    ICE_TX_DESC_LEN_IPLEN_S) * ICE_BYTES_PER_DWORD)
+#define ICE_TXD_L4LEN_MAX ((ICE_TXD_QW1_L4LEN_M >> \
+			    ICE_TX_DESC_LEN_L4_LEN_S) * ICE_BYTES_PER_DWORD)
+
 #define ICE_TXD_QW1_TX_BUF_SZ_S	34
 #define ICE_TXD_QW1_L2TAG1_S	48
 

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

@@ -7,7 +7,7 @@
 
 #include "ice.h"
 
-#define DRV_VERSION	"ice-0.0.1-k"
+#define DRV_VERSION	"ice-0.7.0-k"
 #define DRV_SUMMARY	"Intel(R) Ethernet Connection E800 Series Linux Driver"
 const char ice_drv_ver[] = DRV_VERSION;
 static const char ice_driver_string[] = DRV_SUMMARY;
@@ -200,6 +200,48 @@ static int ice_add_mac_to_list(struct ice_vsi *vsi, struct list_head *add_list,
 	return 0;
 }
 
+/**
+ * ice_add_mac_to_sync_list - creates list of mac addresses to be synced
+ * @netdev: the net device on which the sync is happening
+ * @addr: mac address to sync
+ *
+ * This is a callback function which is called by the in kernel device sync
+ * functions (like __dev_uc_sync, __dev_mc_sync, etc). This function only
+ * populates the tmp_sync_list, which is later used by ice_add_mac to add the
+ * mac filters from the hardware.
+ */
+static int ice_add_mac_to_sync_list(struct net_device *netdev, const u8 *addr)
+{
+	struct ice_netdev_priv *np = netdev_priv(netdev);
+	struct ice_vsi *vsi = np->vsi;
+
+	if (ice_add_mac_to_list(vsi, &vsi->tmp_sync_list, addr))
+		return -EINVAL;
+
+	return 0;
+}
+
+/**
+ * ice_add_mac_to_unsync_list - creates list of mac addresses to be unsynced
+ * @netdev: the net device on which the unsync is happening
+ * @addr: mac address to unsync
+ *
+ * This is a callback function which is called by the in kernel device unsync
+ * functions (like __dev_uc_unsync, __dev_mc_unsync, etc). This function only
+ * populates the tmp_unsync_list, which is later used by ice_remove_mac to
+ * delete the mac filters from the hardware.
+ */
+static int ice_add_mac_to_unsync_list(struct net_device *netdev, const u8 *addr)
+{
+	struct ice_netdev_priv *np = netdev_priv(netdev);
+	struct ice_vsi *vsi = np->vsi;
+
+	if (ice_add_mac_to_list(vsi, &vsi->tmp_unsync_list, addr))
+		return -EINVAL;
+
+	return 0;
+}
+
 /**
  * ice_free_fltr_list - free filter lists helper
  * @dev: pointer to the device struct
@@ -218,6 +260,183 @@ static void ice_free_fltr_list(struct device *dev, struct list_head *h)
 	}
 }
 
+/**
+ * ice_vsi_fltr_changed - check if filter state changed
+ * @vsi: VSI to be checked
+ *
+ * returns true if filter state has changed, false otherwise.
+ */
+static bool ice_vsi_fltr_changed(struct ice_vsi *vsi)
+{
+	return test_bit(ICE_VSI_FLAG_UMAC_FLTR_CHANGED, vsi->flags) ||
+	       test_bit(ICE_VSI_FLAG_MMAC_FLTR_CHANGED, vsi->flags) ||
+	       test_bit(ICE_VSI_FLAG_VLAN_FLTR_CHANGED, vsi->flags);
+}
+
+/**
+ * ice_vsi_sync_fltr - Update the VSI filter list to the HW
+ * @vsi: ptr to the VSI
+ *
+ * Push any outstanding VSI filter changes through the AdminQ.
+ */
+static int ice_vsi_sync_fltr(struct ice_vsi *vsi)
+{
+	struct device *dev = &vsi->back->pdev->dev;
+	struct net_device *netdev = vsi->netdev;
+	bool promisc_forced_on = false;
+	struct ice_pf *pf = vsi->back;
+	struct ice_hw *hw = &pf->hw;
+	enum ice_status status = 0;
+	u32 changed_flags = 0;
+	int err = 0;
+
+	if (!vsi->netdev)
+		return -EINVAL;
+
+	while (test_and_set_bit(__ICE_CFG_BUSY, vsi->state))
+		usleep_range(1000, 2000);
+
+	changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
+	vsi->current_netdev_flags = vsi->netdev->flags;
+
+	INIT_LIST_HEAD(&vsi->tmp_sync_list);
+	INIT_LIST_HEAD(&vsi->tmp_unsync_list);
+
+	if (ice_vsi_fltr_changed(vsi)) {
+		clear_bit(ICE_VSI_FLAG_UMAC_FLTR_CHANGED, vsi->flags);
+		clear_bit(ICE_VSI_FLAG_MMAC_FLTR_CHANGED, vsi->flags);
+		clear_bit(ICE_VSI_FLAG_VLAN_FLTR_CHANGED, vsi->flags);
+
+		/* grab the netdev's addr_list_lock */
+		netif_addr_lock_bh(netdev);
+		__dev_uc_sync(netdev, ice_add_mac_to_sync_list,
+			      ice_add_mac_to_unsync_list);
+		__dev_mc_sync(netdev, ice_add_mac_to_sync_list,
+			      ice_add_mac_to_unsync_list);
+		/* our temp lists are populated. release lock */
+		netif_addr_unlock_bh(netdev);
+	}
+
+	/* Remove mac addresses in the unsync list */
+	status = ice_remove_mac(hw, &vsi->tmp_unsync_list);
+	ice_free_fltr_list(dev, &vsi->tmp_unsync_list);
+	if (status) {
+		netdev_err(netdev, "Failed to delete MAC filters\n");
+		/* if we failed because of alloc failures, just bail */
+		if (status == ICE_ERR_NO_MEMORY) {
+			err = -ENOMEM;
+			goto out;
+		}
+	}
+
+	/* Add mac addresses in the sync list */
+	status = ice_add_mac(hw, &vsi->tmp_sync_list);
+	ice_free_fltr_list(dev, &vsi->tmp_sync_list);
+	if (status) {
+		netdev_err(netdev, "Failed to add MAC filters\n");
+		/* If there is no more space for new umac filters, vsi
+		 * should go into promiscuous mode. There should be some
+		 * space reserved for promiscuous filters.
+		 */
+		if (hw->adminq.sq_last_status == ICE_AQ_RC_ENOSPC &&
+		    !test_and_set_bit(__ICE_FLTR_OVERFLOW_PROMISC,
+				      vsi->state)) {
+			promisc_forced_on = true;
+			netdev_warn(netdev,
+				    "Reached MAC filter limit, forcing promisc mode on VSI %d\n",
+				    vsi->vsi_num);
+		} else {
+			err = -EIO;
+			goto out;
+		}
+	}
+	/* check for changes in promiscuous modes */
+	if (changed_flags & IFF_ALLMULTI)
+		netdev_warn(netdev, "Unsupported configuration\n");
+
+	if (((changed_flags & IFF_PROMISC) || promisc_forced_on) ||
+	    test_bit(ICE_VSI_FLAG_PROMISC_CHANGED, vsi->flags)) {
+		clear_bit(ICE_VSI_FLAG_PROMISC_CHANGED, vsi->flags);
+		if (vsi->current_netdev_flags & IFF_PROMISC) {
+			/* Apply TX filter rule to get traffic from VMs */
+			status = ice_cfg_dflt_vsi(hw, vsi->vsi_num, true,
+						  ICE_FLTR_TX);
+			if (status) {
+				netdev_err(netdev, "Error setting default VSI %i tx rule\n",
+					   vsi->vsi_num);
+				vsi->current_netdev_flags &= ~IFF_PROMISC;
+				err = -EIO;
+				goto out_promisc;
+			}
+			/* Apply RX filter rule to get traffic from wire */
+			status = ice_cfg_dflt_vsi(hw, vsi->vsi_num, true,
+						  ICE_FLTR_RX);
+			if (status) {
+				netdev_err(netdev, "Error setting default VSI %i rx rule\n",
+					   vsi->vsi_num);
+				vsi->current_netdev_flags &= ~IFF_PROMISC;
+				err = -EIO;
+				goto out_promisc;
+			}
+		} else {
+			/* Clear TX filter rule to stop traffic from VMs */
+			status = ice_cfg_dflt_vsi(hw, vsi->vsi_num, false,
+						  ICE_FLTR_TX);
+			if (status) {
+				netdev_err(netdev, "Error clearing default VSI %i tx rule\n",
+					   vsi->vsi_num);
+				vsi->current_netdev_flags |= IFF_PROMISC;
+				err = -EIO;
+				goto out_promisc;
+			}
+			/* Clear filter RX to remove traffic from wire */
+			status = ice_cfg_dflt_vsi(hw, vsi->vsi_num, false,
+						  ICE_FLTR_RX);
+			if (status) {
+				netdev_err(netdev, "Error clearing default VSI %i rx rule\n",
+					   vsi->vsi_num);
+				vsi->current_netdev_flags |= IFF_PROMISC;
+				err = -EIO;
+				goto out_promisc;
+			}
+		}
+	}
+	goto exit;
+
+out_promisc:
+	set_bit(ICE_VSI_FLAG_PROMISC_CHANGED, vsi->flags);
+	goto exit;
+out:
+	/* if something went wrong then set the changed flag so we try again */
+	set_bit(ICE_VSI_FLAG_UMAC_FLTR_CHANGED, vsi->flags);
+	set_bit(ICE_VSI_FLAG_MMAC_FLTR_CHANGED, vsi->flags);
+exit:
+	clear_bit(__ICE_CFG_BUSY, vsi->state);
+	return err;
+}
+
+/**
+ * ice_sync_fltr_subtask - Sync the VSI filter list with HW
+ * @pf: board private structure
+ */
+static void ice_sync_fltr_subtask(struct ice_pf *pf)
+{
+	int v;
+
+	if (!pf || !(test_bit(ICE_FLAG_FLTR_SYNC, pf->flags)))
+		return;
+
+	clear_bit(ICE_FLAG_FLTR_SYNC, pf->flags);
+
+	for (v = 0; v < pf->num_alloc_vsi; v++)
+		if (pf->vsi[v] && ice_vsi_fltr_changed(pf->vsi[v]) &&
+		    ice_vsi_sync_fltr(pf->vsi[v])) {
+			/* come back and try again later */
+			set_bit(ICE_FLAG_FLTR_SYNC, pf->flags);
+			break;
+		}
+}
+
 /**
  * ice_is_reset_recovery_pending - schedule a reset
  * @state: pf state field
@@ -780,6 +999,7 @@ static void ice_service_task(struct work_struct *work)
 		return;
 	}
 
+	ice_sync_fltr_subtask(pf);
 	ice_watchdog_subtask(pf);
 	ice_clean_adminq_subtask(pf);
 
@@ -2491,6 +2711,7 @@ static int ice_vsi_reinit_setup(struct ice_vsi *vsi)
 	ice_vsi_free_q_vectors(vsi);
 err_rings:
 	if (vsi->netdev) {
+		vsi->current_netdev_flags = 0;
 		unregister_netdev(vsi->netdev);
 		free_netdev(vsi->netdev);
 		vsi->netdev = NULL;
@@ -3300,6 +3521,197 @@ static void __exit ice_module_exit(void)
 }
 module_exit(ice_module_exit);
 
+/**
+ * ice_set_mac_address - NDO callback to set mac address
+ * @netdev: network interface device structure
+ * @pi: pointer to an address structure
+ *
+ * Returns 0 on success, negative on failure
+ */
+static int ice_set_mac_address(struct net_device *netdev, void *pi)
+{
+	struct ice_netdev_priv *np = netdev_priv(netdev);
+	struct ice_vsi *vsi = np->vsi;
+	struct ice_pf *pf = vsi->back;
+	struct ice_hw *hw = &pf->hw;
+	struct sockaddr *addr = pi;
+	enum ice_status status;
+	LIST_HEAD(a_mac_list);
+	LIST_HEAD(r_mac_list);
+	u8 flags = 0;
+	int err;
+	u8 *mac;
+
+	mac = (u8 *)addr->sa_data;
+
+	if (!is_valid_ether_addr(mac))
+		return -EADDRNOTAVAIL;
+
+	if (ether_addr_equal(netdev->dev_addr, mac)) {
+		netdev_warn(netdev, "already using mac %pM\n", mac);
+		return 0;
+	}
+
+	if (test_bit(__ICE_DOWN, pf->state) ||
+	    ice_is_reset_recovery_pending(pf->state)) {
+		netdev_err(netdev, "can't set mac %pM. device not ready\n",
+			   mac);
+		return -EBUSY;
+	}
+
+	/* When we change the mac address we also have to change the mac address
+	 * based filter rules that were created previously for the old mac
+	 * address. So first, we remove the old filter rule using ice_remove_mac
+	 * and then create a new filter rule using ice_add_mac. Note that for
+	 * both these operations, we first need to form a "list" of mac
+	 * addresses (even though in this case, we have only 1 mac address to be
+	 * added/removed) and this done using ice_add_mac_to_list. Depending on
+	 * the ensuing operation this "list" of mac addresses is either to be
+	 * added or removed from the filter.
+	 */
+	err = ice_add_mac_to_list(vsi, &r_mac_list, netdev->dev_addr);
+	if (err) {
+		err = -EADDRNOTAVAIL;
+		goto free_lists;
+	}
+
+	status = ice_remove_mac(hw, &r_mac_list);
+	if (status) {
+		err = -EADDRNOTAVAIL;
+		goto free_lists;
+	}
+
+	err = ice_add_mac_to_list(vsi, &a_mac_list, mac);
+	if (err) {
+		err = -EADDRNOTAVAIL;
+		goto free_lists;
+	}
+
+	status = ice_add_mac(hw, &a_mac_list);
+	if (status) {
+		err = -EADDRNOTAVAIL;
+		goto free_lists;
+	}
+
+free_lists:
+	/* free list entries */
+	ice_free_fltr_list(&pf->pdev->dev, &r_mac_list);
+	ice_free_fltr_list(&pf->pdev->dev, &a_mac_list);
+
+	if (err) {
+		netdev_err(netdev, "can't set mac %pM. filter update failed\n",
+			   mac);
+		return err;
+	}
+
+	/* change the netdev's mac address */
+	memcpy(netdev->dev_addr, mac, netdev->addr_len);
+	netdev_dbg(vsi->netdev, "updated mac address to %pM\n",
+		   netdev->dev_addr);
+
+	/* write new mac address to the firmware */
+	flags = ICE_AQC_MAN_MAC_UPDATE_LAA_WOL;
+	status = ice_aq_manage_mac_write(hw, mac, flags, NULL);
+	if (status) {
+		netdev_err(netdev, "can't set mac %pM. write to firmware failed.\n",
+			   mac);
+	}
+	return 0;
+}
+
+/**
+ * ice_set_rx_mode - NDO callback to set the netdev filters
+ * @netdev: network interface device structure
+ */
+static void ice_set_rx_mode(struct net_device *netdev)
+{
+	struct ice_netdev_priv *np = netdev_priv(netdev);
+	struct ice_vsi *vsi = np->vsi;
+
+	if (!vsi)
+		return;
+
+	/* Set the flags to synchronize filters
+	 * ndo_set_rx_mode may be triggered even without a change in netdev
+	 * flags
+	 */
+	set_bit(ICE_VSI_FLAG_UMAC_FLTR_CHANGED, vsi->flags);
+	set_bit(ICE_VSI_FLAG_MMAC_FLTR_CHANGED, vsi->flags);
+	set_bit(ICE_FLAG_FLTR_SYNC, vsi->back->flags);
+
+	/* schedule our worker thread which will take care of
+	 * applying the new filter changes
+	 */
+	ice_service_task_schedule(vsi->back);
+}
+
+/**
+ * ice_fdb_add - add an entry to the hardware database
+ * @ndm: the input from the stack
+ * @tb: pointer to array of nladdr (unused)
+ * @dev: the net device pointer
+ * @addr: the MAC address entry being added
+ * @vid: VLAN id
+ * @flags: instructions from stack about fdb operation
+ */
+static int ice_fdb_add(struct ndmsg *ndm, struct nlattr __always_unused *tb[],
+		       struct net_device *dev, const unsigned char *addr,
+		       u16 vid, u16 flags)
+{
+	int err;
+
+	if (vid) {
+		netdev_err(dev, "VLANs aren't supported yet for dev_uc|mc_add()\n");
+		return -EINVAL;
+	}
+	if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
+		netdev_err(dev, "FDB only supports static addresses\n");
+		return -EINVAL;
+	}
+
+	if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
+		err = dev_uc_add_excl(dev, addr);
+	else if (is_multicast_ether_addr(addr))
+		err = dev_mc_add_excl(dev, addr);
+	else
+		err = -EINVAL;
+
+	/* Only return duplicate errors if NLM_F_EXCL is set */
+	if (err == -EEXIST && !(flags & NLM_F_EXCL))
+		err = 0;
+
+	return err;
+}
+
+/**
+ * ice_fdb_del - delete an entry from the hardware database
+ * @ndm: the input from the stack
+ * @tb: pointer to array of nladdr (unused)
+ * @dev: the net device pointer
+ * @addr: the MAC address entry being added
+ * @vid: VLAN id
+ */
+static int ice_fdb_del(struct ndmsg *ndm, __always_unused struct nlattr *tb[],
+		       struct net_device *dev, const unsigned char *addr,
+		       __always_unused u16 vid)
+{
+	int err;
+
+	if (ndm->ndm_state & NUD_PERMANENT) {
+		netdev_err(dev, "FDB only supports static addresses\n");
+		return -EINVAL;
+	}
+
+	if (is_unicast_ether_addr(addr))
+		err = dev_uc_del(dev, addr);
+	else if (is_multicast_ether_addr(addr))
+		err = dev_mc_del(dev, addr);
+	else
+		err = -EINVAL;
+
+	return err;
+}
+
 /**
  * ice_vsi_manage_vlan_insertion - Manage VLAN insertion for the VSI for Tx
  * @vsi: the vsi being changed
@@ -3690,6 +4102,8 @@ static int ice_vsi_cfg(struct ice_vsi *vsi)
 {
 	int err;
 
+	ice_set_rx_mode(vsi->netdev);
+
 	err = ice_restore_vlan(vsi);
 	if (err)
 		return err;
@@ -4379,6 +4793,30 @@ void ice_get_stats64(struct net_device *netdev, struct rtnl_link_stats64 *stats)
 	stats->rx_length_errors = vsi_stats->rx_length_errors;
 }
 
+#ifdef CONFIG_NET_POLL_CONTROLLER
+/**
+ * ice_netpoll - polling "interrupt" handler
+ * @netdev: network interface device structure
+ *
+ * Used by netconsole to send skbs without having to re-enable interrupts.
+ * This is not called in the normal interrupt path.
+ */
+static void ice_netpoll(struct net_device *netdev)
+{
+	struct ice_netdev_priv *np = netdev_priv(netdev);
+	struct ice_vsi *vsi = np->vsi;
+	struct ice_pf *pf = vsi->back;
+	int i;
+
+	if (test_bit(__ICE_DOWN, vsi->state) ||
+	    !test_bit(ICE_FLAG_MSIX_ENA, pf->flags))
+		return;
+
+	for (i = 0; i < vsi->num_q_vectors; i++)
+		ice_msix_clean_rings(0, vsi->q_vectors[i]);
+}
+#endif /* CONFIG_NET_POLL_CONTROLLER */
+
 /**
  * ice_napi_disable_all - Disable NAPI for all q_vectors in the VSI
  * @vsi: VSI having NAPI disabled
@@ -4786,6 +5224,73 @@ static void ice_rebuild(struct ice_pf *pf)
 	set_bit(__ICE_RESET_RECOVERY_PENDING, pf->state);
 }
 
+/**
+ * ice_change_mtu - NDO callback to change the MTU
+ * @netdev: network interface device structure
+ * @new_mtu: new value for maximum frame size
+ *
+ * Returns 0 on success, negative on failure
+ */
+static int ice_change_mtu(struct net_device *netdev, int new_mtu)
+{
+	struct ice_netdev_priv *np = netdev_priv(netdev);
+	struct ice_vsi *vsi = np->vsi;
+	struct ice_pf *pf = vsi->back;
+	u8 count = 0;
+
+	if (new_mtu == netdev->mtu) {
+		netdev_warn(netdev, "mtu is already %d\n", netdev->mtu);
+		return 0;
+	}
+
+	if (new_mtu < netdev->min_mtu) {
+		netdev_err(netdev, "new mtu invalid. min_mtu is %d\n",
+			   netdev->min_mtu);
+		return -EINVAL;
+	} else if (new_mtu > netdev->max_mtu) {
+		netdev_err(netdev, "new mtu invalid. max_mtu is %d\n",
+			   netdev->min_mtu);
+		return -EINVAL;
+	}
+	/* if a reset is in progress, wait for some time for it to complete */
+	do {
+		if (ice_is_reset_recovery_pending(pf->state)) {
+			count++;
+			usleep_range(1000, 2000);
+		} else {
+			break;
+		}
+
+	} while (count < 100);
+
+	if (count == 100) {
+		netdev_err(netdev, "can't change mtu. Device is busy\n");
+		return -EBUSY;
+	}
+
+	netdev->mtu = new_mtu;
+
+	/* if VSI is up, bring it down and then back up */
+	if (!test_and_set_bit(__ICE_DOWN, vsi->state)) {
+		int err;
+
+		err = ice_down(vsi);
+		if (err) {
+			netdev_err(netdev, "change mtu if_up err %d\n", err);
+			return err;
+		}
+
+		err = ice_up(vsi);
+		if (err) {
+			netdev_err(netdev, "change mtu if_up err %d\n", err);
+			return err;
+		}
+	}
+
+	netdev_dbg(netdev, "changed mtu to %d\n", new_mtu);
+	return 0;
+}
+
 /**
  * ice_set_rss - Set RSS keys and lut
  * @vsi: Pointer to VSI structure
@@ -4919,12 +5424,72 @@ static int ice_stop(struct net_device *netdev)
 	return 0;
 }
 
+/**
+ * ice_features_check - Validate encapsulated packet conforms to limits
+ * @skb: skb buffer
+ * @netdev: This port's netdev
+ * @features: Offload features that the stack believes apply
+ */
+static netdev_features_t
+ice_features_check(struct sk_buff *skb,
+		   struct net_device __always_unused *netdev,
+		   netdev_features_t features)
+{
+	size_t len;
+
+	/* No point in doing any of this if neither checksum nor GSO are
+	 * being requested for this frame.  We can rule out both by just
+	 * checking for CHECKSUM_PARTIAL
+	 */
+	if (skb->ip_summed != CHECKSUM_PARTIAL)
+		return features;
+
+	/* We cannot support GSO if the MSS is going to be less than
+	 * 64 bytes.  If it is then we need to drop support for GSO.
+	 */
+	if (skb_is_gso(skb) && (skb_shinfo(skb)->gso_size < 64))
+		features &= ~NETIF_F_GSO_MASK;
+
+	len = skb_network_header(skb) - skb->data;
+	if (len & ~(ICE_TXD_MACLEN_MAX))
+		goto out_rm_features;
+
+	len = skb_transport_header(skb) - skb_network_header(skb);
+	if (len & ~(ICE_TXD_IPLEN_MAX))
+		goto out_rm_features;
+
+	if (skb->encapsulation) {
+		len = skb_inner_network_header(skb) - skb_transport_header(skb);
+		if (len & ~(ICE_TXD_L4LEN_MAX))
+			goto out_rm_features;
+
+		len = skb_inner_transport_header(skb) -
+		      skb_inner_network_header(skb);
+		if (len & ~(ICE_TXD_IPLEN_MAX))
+			goto out_rm_features;
+	}
+
+	return features;
+out_rm_features:
+	return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
+}
+
 static const struct net_device_ops ice_netdev_ops = {
 	.ndo_open = ice_open,
 	.ndo_stop = ice_stop,
 	.ndo_start_xmit = ice_start_xmit,
+	.ndo_features_check = ice_features_check,
+	.ndo_set_rx_mode = ice_set_rx_mode,
+	.ndo_set_mac_address = ice_set_mac_address,
+	.ndo_validate_addr = eth_validate_addr,
+	.ndo_change_mtu = ice_change_mtu,
 	.ndo_get_stats64 = ice_get_stats64,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+	.ndo_poll_controller = ice_netpoll,
+#endif /* CONFIG_NET_POLL_CONTROLLER */
 	.ndo_vlan_rx_add_vid = ice_vlan_rx_add_vid,
 	.ndo_vlan_rx_kill_vid = ice_vlan_rx_kill_vid,
 	.ndo_set_features = ice_set_features,
+	.ndo_fdb_add = ice_fdb_add,
+	.ndo_fdb_del = ice_fdb_del,
 };

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

@@ -1626,6 +1626,83 @@ ice_remove_mac(struct ice_hw *hw, struct list_head *m_list)
 	return status;
 }
 
+/**
+ * ice_cfg_dflt_vsi - add filter rule to set/unset given VSI as default
+ * VSI for the switch (represented by swid)
+ * @hw: pointer to the hardware structure
+ * @vsi_id: number of VSI to set as default
+ * @set: true to add the above mentioned switch rule, false to remove it
+ * @direction: ICE_FLTR_RX or ICE_FLTR_TX
+ */
+enum ice_status
+ice_cfg_dflt_vsi(struct ice_hw *hw, u16 vsi_id, bool set, u8 direction)
+{
+	struct ice_aqc_sw_rules_elem *s_rule;
+	struct ice_fltr_info f_info;
+	enum ice_adminq_opc opcode;
+	enum ice_status status;
+	u16 s_rule_size;
+
+	s_rule_size = set ? ICE_SW_RULE_RX_TX_ETH_HDR_SIZE :
+			    ICE_SW_RULE_RX_TX_NO_HDR_SIZE;
+	s_rule = devm_kzalloc(ice_hw_to_dev(hw), s_rule_size, GFP_KERNEL);
+	if (!s_rule)
+		return ICE_ERR_NO_MEMORY;
+
+	memset(&f_info, 0, sizeof(f_info));
+
+	f_info.lkup_type = ICE_SW_LKUP_DFLT;
+	f_info.flag = direction;
+	f_info.fltr_act = ICE_FWD_TO_VSI;
+	f_info.fwd_id.vsi_id = vsi_id;
+
+	if (f_info.flag & ICE_FLTR_RX) {
+		f_info.src = hw->port_info->lport;
+		if (!set)
+			f_info.fltr_rule_id =
+				hw->port_info->dflt_rx_vsi_rule_id;
+	} else if (f_info.flag & ICE_FLTR_TX) {
+		f_info.src = vsi_id;
+		if (!set)
+			f_info.fltr_rule_id =
+				hw->port_info->dflt_tx_vsi_rule_id;
+	}
+
+	if (set)
+		opcode = ice_aqc_opc_add_sw_rules;
+	else
+		opcode = ice_aqc_opc_remove_sw_rules;
+
+	ice_fill_sw_rule(hw, &f_info, s_rule, opcode);
+
+	status = ice_aq_sw_rules(hw, s_rule, s_rule_size, 1, opcode, NULL);
+	if (status || !(f_info.flag & ICE_FLTR_TX_RX))
+		goto out;
+	if (set) {
+		u16 index = le16_to_cpu(s_rule->pdata.lkup_tx_rx.index);
+
+		if (f_info.flag & ICE_FLTR_TX) {
+			hw->port_info->dflt_tx_vsi_num = vsi_id;
+			hw->port_info->dflt_tx_vsi_rule_id = index;
+		} else if (f_info.flag & ICE_FLTR_RX) {
+			hw->port_info->dflt_rx_vsi_num = vsi_id;
+			hw->port_info->dflt_rx_vsi_rule_id = index;
+		}
+	} else {
+		if (f_info.flag & ICE_FLTR_TX) {
+			hw->port_info->dflt_tx_vsi_num = ICE_DFLT_VSI_INVAL;
+			hw->port_info->dflt_tx_vsi_rule_id = ICE_INVAL_ACT;
+		} else if (f_info.flag & ICE_FLTR_RX) {
+			hw->port_info->dflt_rx_vsi_num = ICE_DFLT_VSI_INVAL;
+			hw->port_info->dflt_rx_vsi_rule_id = ICE_INVAL_ACT;
+		}
+	}
+
+out:
+	devm_kfree(ice_hw_to_dev(hw), s_rule);
+	return status;
+}
+
 /**
  * ice_remove_vlan_internal - Remove one VLAN based filter rule
  * @hw: pointer to the hardware structure

drivers/net/ethernet/intel/ice/ice_switch.h

@@ -155,5 +155,7 @@ enum ice_status ice_remove_mac(struct ice_hw *hw, struct list_head *m_lst);
 void ice_remove_vsi_fltr(struct ice_hw *hw, u16 vsi_id);
 enum ice_status ice_add_vlan(struct ice_hw *hw, struct list_head *m_list);
 enum ice_status ice_remove_vlan(struct ice_hw *hw, struct list_head *v_list);
+enum ice_status
+ice_cfg_dflt_vsi(struct ice_hw *hw, u16 vsi_id, bool set, u8 direction);
 
 #endif /* _ICE_SWITCH_H_ */

drivers/net/ethernet/intel/ice/ice_type.h

@@ -10,6 +10,9 @@
 #include "ice_controlq.h"
 #include "ice_lan_tx_rx.h"
 
+#define ICE_BYTES_PER_WORD	2
+#define ICE_BYTES_PER_DWORD	4
+
 static inline bool ice_is_tc_ena(u8 bitmap, u8 tc)
 {
 	return test_bit(tc, (unsigned long *)&bitmap);
@@ -227,7 +230,9 @@ struct ice_port_info {
 	u8 port_state;
 #define ICE_SCHED_PORT_STATE_INIT	0x0
 #define ICE_SCHED_PORT_STATE_READY	0x1
+	u16 dflt_tx_vsi_rule_id;
 	u16 dflt_tx_vsi_num;
+	u16 dflt_rx_vsi_rule_id;
 	u16 dflt_rx_vsi_num;
 	struct ice_fc_info fc;
 	struct ice_mac_info mac;