1 files changed, 476 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/ice/ice_fltr.c b/drivers/net/ethernet/intel/ice/ice_fltr.c
new file mode 100644
index 000000000..40e678cfb
--- /dev/null
+++ b/drivers/net/ethernet/intel/ice/ice_fltr.c
@@ -0,0 +1,476 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (C) 2018-2020, Intel Corporation. */
+
+#include "ice.h"
+#include "ice_fltr.h"
+
+/**
+ * ice_fltr_free_list - free filter lists helper
+ * @dev: pointer to the device struct
+ * @h: pointer to the list head to be freed
+ *
+ * Helper function to free filter lists previously created using
+ * ice_fltr_add_mac_to_list
+ */
+void ice_fltr_free_list(struct device *dev, struct list_head *h)
+{
+	struct ice_fltr_list_entry *e, *tmp;
+
+	list_for_each_entry_safe(e, tmp, h, list_entry) {
+		list_del(&e->list_entry);
+		devm_kfree(dev, e);
+	}
+}
+
+/**
+ * ice_fltr_add_entry_to_list - allocate and add filter entry to list
+ * @dev: pointer to device needed by alloc function
+ * @info: filter info struct that gets added to the passed in list
+ * @list: pointer to the list which contains MAC filters entry
+ */
+static int
+ice_fltr_add_entry_to_list(struct device *dev, struct ice_fltr_info *info,
+			   struct list_head *list)
+{
+	struct ice_fltr_list_entry *entry;
+
+	entry = devm_kzalloc(dev, sizeof(*entry), GFP_ATOMIC);
+	if (!entry)
+		return -ENOMEM;
+
+	entry->fltr_info = *info;
+
+	INIT_LIST_HEAD(&entry->list_entry);
+	list_add(&entry->list_entry, list);
+
+	return 0;
+}
+
+/**
+ * ice_fltr_set_vlan_vsi_promisc
+ * @hw: pointer to the hardware structure
+ * @vsi: the VSI being configured
+ * @promisc_mask: mask of promiscuous config bits
+ *
+ * Set VSI with all associated VLANs to given promiscuous mode(s)
+ */
+int
+ice_fltr_set_vlan_vsi_promisc(struct ice_hw *hw, struct ice_vsi *vsi,
+			      u8 promisc_mask)
+{
+	struct ice_pf *pf = hw->back;
+	int result;
+
+	result = ice_set_vlan_vsi_promisc(hw, vsi->idx, promisc_mask, false);
+	if (result && result != -EEXIST)
+		dev_err(ice_pf_to_dev(pf),
+			"Error setting promisc mode on VSI %i (rc=%d)\n",
+			vsi->vsi_num, result);
+
+	return result;
+}
+
+/**
+ * ice_fltr_clear_vlan_vsi_promisc
+ * @hw: pointer to the hardware structure
+ * @vsi: the VSI being configured
+ * @promisc_mask: mask of promiscuous config bits
+ *
+ * Clear VSI with all associated VLANs to given promiscuous mode(s)
+ */
+int
+ice_fltr_clear_vlan_vsi_promisc(struct ice_hw *hw, struct ice_vsi *vsi,
+				u8 promisc_mask)
+{
+	struct ice_pf *pf = hw->back;
+	int result;
+
+	result = ice_set_vlan_vsi_promisc(hw, vsi->idx, promisc_mask, true);
+	if (result && result != -EEXIST)
+		dev_err(ice_pf_to_dev(pf),
+			"Error clearing promisc mode on VSI %i (rc=%d)\n",
+			vsi->vsi_num, result);
+
+	return result;
+}
+
+/**
+ * ice_fltr_clear_vsi_promisc - clear specified promiscuous mode(s)
+ * @hw: pointer to the hardware structure
+ * @vsi_handle: VSI handle to clear mode
+ * @promisc_mask: mask of promiscuous config bits to clear
+ * @vid: VLAN ID to clear VLAN promiscuous
+ */
+int
+ice_fltr_clear_vsi_promisc(struct ice_hw *hw, u16 vsi_handle, u8 promisc_mask,
+			   u16 vid)
+{
+	struct ice_pf *pf = hw->back;
+	int result;
+
+	result = ice_clear_vsi_promisc(hw, vsi_handle, promisc_mask, vid);
+	if (result && result != -EEXIST)
+		dev_err(ice_pf_to_dev(pf),
+			"Error clearing promisc mode on VSI %i for VID %u (rc=%d)\n",
+			ice_get_hw_vsi_num(hw, vsi_handle), vid, result);
+
+	return result;
+}
+
+/**
+ * ice_fltr_set_vsi_promisc - set given VSI to given promiscuous mode(s)
+ * @hw: pointer to the hardware structure
+ * @vsi_handle: VSI handle to configure
+ * @promisc_mask: mask of promiscuous config bits
+ * @vid: VLAN ID to set VLAN promiscuous
+ */
+int
+ice_fltr_set_vsi_promisc(struct ice_hw *hw, u16 vsi_handle, u8 promisc_mask,
+			 u16 vid)
+{
+	struct ice_pf *pf = hw->back;
+	int result;
+
+	result = ice_set_vsi_promisc(hw, vsi_handle, promisc_mask, vid);
+	if (result && result != -EEXIST)
+		dev_err(ice_pf_to_dev(pf),
+			"Error setting promisc mode on VSI %i for VID %u (rc=%d)\n",
+			ice_get_hw_vsi_num(hw, vsi_handle), vid, result);
+
+	return result;
+}
+
+/**
+ * ice_fltr_add_mac_list - add list of MAC filters
+ * @vsi: pointer to VSI struct
+ * @list: list of filters
+ */
+int ice_fltr_add_mac_list(struct ice_vsi *vsi, struct list_head *list)
+{
+	return ice_add_mac(&vsi->back->hw, list);
+}
+
+/**
+ * ice_fltr_remove_mac_list - remove list of MAC filters
+ * @vsi: pointer to VSI struct
+ * @list: list of filters
+ */
+int ice_fltr_remove_mac_list(struct ice_vsi *vsi, struct list_head *list)
+{
+	return ice_remove_mac(&vsi->back->hw, list);
+}
+
+/**
+ * ice_fltr_add_vlan_list - add list of VLAN filters
+ * @vsi: pointer to VSI struct
+ * @list: list of filters
+ */
+static int ice_fltr_add_vlan_list(struct ice_vsi *vsi, struct list_head *list)
+{
+	return ice_add_vlan(&vsi->back->hw, list);
+}
+
+/**
+ * ice_fltr_remove_vlan_list - remove list of VLAN filters
+ * @vsi: pointer to VSI struct
+ * @list: list of filters
+ */
+static int
+ice_fltr_remove_vlan_list(struct ice_vsi *vsi, struct list_head *list)
+{
+	return ice_remove_vlan(&vsi->back->hw, list);
+}
+
+/**
+ * ice_fltr_add_eth_list - add list of ethertype filters
+ * @vsi: pointer to VSI struct
+ * @list: list of filters
+ */
+static int ice_fltr_add_eth_list(struct ice_vsi *vsi, struct list_head *list)
+{
+	return ice_add_eth_mac(&vsi->back->hw, list);
+}
+
+/**
+ * ice_fltr_remove_eth_list - remove list of ethertype filters
+ * @vsi: pointer to VSI struct
+ * @list: list of filters
+ */
+static int ice_fltr_remove_eth_list(struct ice_vsi *vsi, struct list_head *list)
+{
+	return ice_remove_eth_mac(&vsi->back->hw, list);
+}
+
+/**
+ * ice_fltr_remove_all - remove all filters associated with VSI
+ * @vsi: pointer to VSI struct
+ */
+void ice_fltr_remove_all(struct ice_vsi *vsi)
+{
+	ice_remove_vsi_fltr(&vsi->back->hw, vsi->idx);
+}
+
+/**
+ * ice_fltr_add_mac_to_list - add MAC filter info to exsisting list
+ * @vsi: pointer to VSI struct
+ * @list: list to add filter info to
+ * @mac: MAC address to add
+ * @action: filter action
+ */
+int
+ice_fltr_add_mac_to_list(struct ice_vsi *vsi, struct list_head *list,
+			 const u8 *mac, enum ice_sw_fwd_act_type action)
+{
+	struct ice_fltr_info info = { 0 };
+
+	info.flag = ICE_FLTR_TX;
+	info.src_id = ICE_SRC_ID_VSI;
+	info.lkup_type = ICE_SW_LKUP_MAC;
+	info.fltr_act = action;
+	info.vsi_handle = vsi->idx;
+
+	ether_addr_copy(info.l_data.mac.mac_addr, mac);
+
+	return ice_fltr_add_entry_to_list(ice_pf_to_dev(vsi->back), &info,
+					  list);
+}
+
+/**
+ * ice_fltr_add_vlan_to_list - add VLAN filter info to exsisting list
+ * @vsi: pointer to VSI struct
+ * @list: list to add filter info to
+ * @vlan: VLAN filter details
+ */
+static int
+ice_fltr_add_vlan_to_list(struct ice_vsi *vsi, struct list_head *list,
+			  struct ice_vlan *vlan)
+{
+	struct ice_fltr_info info = { 0 };
+
+	info.flag = ICE_FLTR_TX;
+	info.src_id = ICE_SRC_ID_VSI;
+	info.lkup_type = ICE_SW_LKUP_VLAN;
+	info.fltr_act = ICE_FWD_TO_VSI;
+	info.vsi_handle = vsi->idx;
+	info.l_data.vlan.vlan_id = vlan->vid;
+	info.l_data.vlan.tpid = vlan->tpid;
+	info.l_data.vlan.tpid_valid = true;
+
+	return ice_fltr_add_entry_to_list(ice_pf_to_dev(vsi->back), &info,
+					  list);
+}
+
+/**
+ * ice_fltr_add_eth_to_list - add ethertype filter info to exsisting list
+ * @vsi: pointer to VSI struct
+ * @list: list to add filter info to
+ * @ethertype: ethertype of packet that matches filter
+ * @flag: filter direction, Tx or Rx
+ * @action: filter action
+ */
+static int
+ice_fltr_add_eth_to_list(struct ice_vsi *vsi, struct list_head *list,
+			 u16 ethertype, u16 flag,
+			 enum ice_sw_fwd_act_type action)
+{
+	struct ice_fltr_info info = { 0 };
+
+	info.flag = flag;
+	info.lkup_type = ICE_SW_LKUP_ETHERTYPE;
+	info.fltr_act = action;
+	info.vsi_handle = vsi->idx;
+	info.l_data.ethertype_mac.ethertype = ethertype;
+
+	if (flag == ICE_FLTR_TX)
+		info.src_id = ICE_SRC_ID_VSI;
+	else
+		info.src_id = ICE_SRC_ID_LPORT;
+
+	return ice_fltr_add_entry_to_list(ice_pf_to_dev(vsi->back), &info,
+					  list);
+}
+
+/**
+ * ice_fltr_prepare_mac - add or remove MAC rule
+ * @vsi: pointer to VSI struct
+ * @mac: MAC address to add
+ * @action: action to be performed on filter match
+ * @mac_action: pointer to add or remove MAC function
+ */
+static int
+ice_fltr_prepare_mac(struct ice_vsi *vsi, const u8 *mac,
+		     enum ice_sw_fwd_act_type action,
+		     int (*mac_action)(struct ice_vsi *, struct list_head *))
+{
+	LIST_HEAD(tmp_list);
+	int result;
+
+	if (ice_fltr_add_mac_to_list(vsi, &tmp_list, mac, action)) {
+		ice_fltr_free_list(ice_pf_to_dev(vsi->back), &tmp_list);
+		return -ENOMEM;
+	}
+
+	result = mac_action(vsi, &tmp_list);
+	ice_fltr_free_list(ice_pf_to_dev(vsi->back), &tmp_list);
+	return result;
+}
+
+/**
+ * ice_fltr_prepare_mac_and_broadcast - add or remove MAC and broadcast filter
+ * @vsi: pointer to VSI struct
+ * @mac: MAC address to add
+ * @action: action to be performed on filter match
+ * @mac_action: pointer to add or remove MAC function
+ */
+static int
+ice_fltr_prepare_mac_and_broadcast(struct ice_vsi *vsi, const u8 *mac,
+				   enum ice_sw_fwd_act_type action,
+				   int(*mac_action)
+				   (struct ice_vsi *, struct list_head *))
+{
+	u8 broadcast[ETH_ALEN];
+	LIST_HEAD(tmp_list);
+	int result;
+
+	eth_broadcast_addr(broadcast);
+	if (ice_fltr_add_mac_to_list(vsi, &tmp_list, mac, action) ||
+	    ice_fltr_add_mac_to_list(vsi, &tmp_list, broadcast, action)) {
+		ice_fltr_free_list(ice_pf_to_dev(vsi->back), &tmp_list);
+		return -ENOMEM;
+	}
+
+	result = mac_action(vsi, &tmp_list);
+	ice_fltr_free_list(ice_pf_to_dev(vsi->back), &tmp_list);
+	return result;
+}
+
+/**
+ * ice_fltr_prepare_vlan - add or remove VLAN filter
+ * @vsi: pointer to VSI struct
+ * @vlan: VLAN filter details
+ * @vlan_action: pointer to add or remove VLAN function
+ */
+static int
+ice_fltr_prepare_vlan(struct ice_vsi *vsi, struct ice_vlan *vlan,
+		      int (*vlan_action)(struct ice_vsi *, struct list_head *))
+{
+	LIST_HEAD(tmp_list);
+	int result;
+
+	if (ice_fltr_add_vlan_to_list(vsi, &tmp_list, vlan))
+		return -ENOMEM;
+
+	result = vlan_action(vsi, &tmp_list);
+	ice_fltr_free_list(ice_pf_to_dev(vsi->back), &tmp_list);
+	return result;
+}
+
+/**
+ * ice_fltr_prepare_eth - add or remove ethertype filter
+ * @vsi: pointer to VSI struct
+ * @ethertype: ethertype of packet to be filtered
+ * @flag: direction of packet, Tx or Rx
+ * @action: action to be performed on filter match
+ * @eth_action: pointer to add or remove ethertype function
+ */
+static int
+ice_fltr_prepare_eth(struct ice_vsi *vsi, u16 ethertype, u16 flag,
+		     enum ice_sw_fwd_act_type action,
+		     int (*eth_action)(struct ice_vsi *, struct list_head *))
+{
+	LIST_HEAD(tmp_list);
+	int result;
+
+	if (ice_fltr_add_eth_to_list(vsi, &tmp_list, ethertype, flag, action))
+		return -ENOMEM;
+
+	result = eth_action(vsi, &tmp_list);
+	ice_fltr_free_list(ice_pf_to_dev(vsi->back), &tmp_list);
+	return result;
+}
+
+/**
+ * ice_fltr_add_mac - add single MAC filter
+ * @vsi: pointer to VSI struct
+ * @mac: MAC to add
+ * @action: action to be performed on filter match
+ */
+int ice_fltr_add_mac(struct ice_vsi *vsi, const u8 *mac,
+		     enum ice_sw_fwd_act_type action)
+{
+	return ice_fltr_prepare_mac(vsi, mac, action, ice_fltr_add_mac_list);
+}
+
+/**
+ * ice_fltr_add_mac_and_broadcast - add single MAC and broadcast
+ * @vsi: pointer to VSI struct
+ * @mac: MAC to add
+ * @action: action to be performed on filter match
+ */
+int
+ice_fltr_add_mac_and_broadcast(struct ice_vsi *vsi, const u8 *mac,
+			       enum ice_sw_fwd_act_type action)
+{
+	return ice_fltr_prepare_mac_and_broadcast(vsi, mac, action,
+						  ice_fltr_add_mac_list);
+}
+
+/**
+ * ice_fltr_remove_mac - remove MAC filter
+ * @vsi: pointer to VSI struct
+ * @mac: filter MAC to remove
+ * @action: action to remove
+ */
+int ice_fltr_remove_mac(struct ice_vsi *vsi, const u8 *mac,
+			enum ice_sw_fwd_act_type action)
+{
+	return ice_fltr_prepare_mac(vsi, mac, action, ice_fltr_remove_mac_list);
+}
+
+/**
+ * ice_fltr_add_vlan - add single VLAN filter
+ * @vsi: pointer to VSI struct
+ * @vlan: VLAN filter details
+ */
+int ice_fltr_add_vlan(struct ice_vsi *vsi, struct ice_vlan *vlan)
+{
+	return ice_fltr_prepare_vlan(vsi, vlan, ice_fltr_add_vlan_list);
+}
+
+/**
+ * ice_fltr_remove_vlan - remove VLAN filter
+ * @vsi: pointer to VSI struct
+ * @vlan: VLAN filter details
+ */
+int ice_fltr_remove_vlan(struct ice_vsi *vsi, struct ice_vlan *vlan)
+{
+	return ice_fltr_prepare_vlan(vsi, vlan, ice_fltr_remove_vlan_list);
+}
+
+/**
+ * ice_fltr_add_eth - add specyfic ethertype filter
+ * @vsi: pointer to VSI struct
+ * @ethertype: ethertype of filter
+ * @flag: direction of packet to be filtered, Tx or Rx
+ * @action: action to be performed on filter match
+ */
+int ice_fltr_add_eth(struct ice_vsi *vsi, u16 ethertype, u16 flag,
+		     enum ice_sw_fwd_act_type action)
+{
+	return ice_fltr_prepare_eth(vsi, ethertype, flag, action,
+				    ice_fltr_add_eth_list);
+}
+
+/**
+ * ice_fltr_remove_eth - remove ethertype filter
+ * @vsi: pointer to VSI struct
+ * @ethertype: ethertype of filter
+ * @flag: direction of filter
+ * @action: action to remove
+ */
+int ice_fltr_remove_eth(struct ice_vsi *vsi, u16 ethertype, u16 flag,
+			enum ice_sw_fwd_act_type action)
+{
+	return ice_fltr_prepare_eth(vsi, ethertype, flag, action,
+				    ice_fltr_remove_eth_list);
+}