drivers/net/ethernet/intel/ice/ice_tc_lib.h - linux - Git at Google

 /* SPDX-License-Identifier: GPL-2.0 */
 /* Copyright (C) 2019-2021, Intel Corporation. */

 #ifndef _ICE_TC_LIB_H_
 #define _ICE_TC_LIB_H_

 #define ICE_TC_FLWR_FIELD_DST_MAC		BIT(0)
 #define ICE_TC_FLWR_FIELD_SRC_MAC		BIT(1)
 #define ICE_TC_FLWR_FIELD_VLAN			BIT(2)
 #define ICE_TC_FLWR_FIELD_DEST_IPV4		BIT(3)
 #define ICE_TC_FLWR_FIELD_SRC_IPV4		BIT(4)
 #define ICE_TC_FLWR_FIELD_DEST_IPV6		BIT(5)
 #define ICE_TC_FLWR_FIELD_SRC_IPV6		BIT(6)
 #define ICE_TC_FLWR_FIELD_DEST_L4_PORT		BIT(7)
 #define ICE_TC_FLWR_FIELD_SRC_L4_PORT		BIT(8)
 #define ICE_TC_FLWR_FIELD_TENANT_ID		BIT(9)
 #define ICE_TC_FLWR_FIELD_ENC_DEST_IPV4		BIT(10)
 #define ICE_TC_FLWR_FIELD_ENC_SRC_IPV4		BIT(11)
 #define ICE_TC_FLWR_FIELD_ENC_DEST_IPV6		BIT(12)
 #define ICE_TC_FLWR_FIELD_ENC_SRC_IPV6		BIT(13)
 #define ICE_TC_FLWR_FIELD_ENC_DEST_L4_PORT	BIT(14)
 #define ICE_TC_FLWR_FIELD_ENC_SRC_L4_PORT	BIT(15)
 #define ICE_TC_FLWR_FIELD_ENC_DST_MAC		BIT(16)
 #define ICE_TC_FLWR_FIELD_ETH_TYPE_ID		BIT(17)
 #define ICE_TC_FLWR_FIELD_ENC_OPTS		BIT(18)
 #define ICE_TC_FLWR_FIELD_CVLAN			BIT(19)
 #define ICE_TC_FLWR_FIELD_PPPOE_SESSID		BIT(20)
 #define ICE_TC_FLWR_FIELD_PPP_PROTO		BIT(21)
 #define ICE_TC_FLWR_FIELD_IP_TOS		BIT(22)
 #define ICE_TC_FLWR_FIELD_IP_TTL		BIT(23)
 #define ICE_TC_FLWR_FIELD_ENC_IP_TOS		BIT(24)
 #define ICE_TC_FLWR_FIELD_ENC_IP_TTL		BIT(25)
 #define ICE_TC_FLWR_FIELD_L2TPV3_SESSID		BIT(26)
 #define ICE_TC_FLWR_FIELD_VLAN_PRIO		BIT(27)
 #define ICE_TC_FLWR_FIELD_CVLAN_PRIO		BIT(28)
 #define ICE_TC_FLWR_FIELD_VLAN_TPID		BIT(29)

 #define ICE_TC_FLOWER_MASK_32   0xFFFFFFFF

 #define ICE_IPV6_HDR_TC_MASK 0xFF00000

 struct ice_indr_block_priv {
 	struct net_device *netdev;
 	struct ice_netdev_priv *np;
 	struct list_head list;
 };

 struct ice_tc_flower_action {
 	/* forward action specific params */
 	union {
 		struct {
 			u32 tc_class; /* forward to hw_tc */
 			u32 rsvd;
 		} tc;
 		struct {
 			u16 queue; /* forward to queue */
 			/* To add filter in HW, absolute queue number in global
 			 * space of queues (between 0...N) is needed
 			 */
 			u16 hw_queue;
 		} q;
 	} fwd;
 	enum ice_sw_fwd_act_type fltr_act;
 };

 struct ice_tc_vlan_hdr {
 	__be16 vlan_id; /* Only last 12 bits valid */
 	__be16 vlan_prio; /* Only last 3 bits valid (valid values: 0..7) */
 	__be16 vlan_tpid;
 };

 struct ice_tc_pppoe_hdr {
 	__be16 session_id;
 	__be16 ppp_proto;
 };

 struct ice_tc_l2_hdr {
 	u8 dst_mac[ETH_ALEN];
 	u8 src_mac[ETH_ALEN];
 	__be16 n_proto;    /* Ethernet Protocol */
 };

 struct ice_tc_l3_hdr {
 	u8 ip_proto;    /* IPPROTO value */
 	union {
 		struct {
 			struct in_addr dst_ip;
 			struct in_addr src_ip;
 		} v4;
 		struct {
 			struct in6_addr dst_ip6;
 			struct in6_addr src_ip6;
 		} v6;
 	} ip;
 #define dst_ipv6	ip.v6.dst_ip6.s6_addr32
 #define dst_ipv6_addr	ip.v6.dst_ip6.s6_addr
 #define src_ipv6	ip.v6.src_ip6.s6_addr32
 #define src_ipv6_addr	ip.v6.src_ip6.s6_addr
 #define dst_ipv4	ip.v4.dst_ip.s_addr
 #define src_ipv4	ip.v4.src_ip.s_addr

 	u8 tos;
 	u8 ttl;
 };

 struct ice_tc_l2tpv3_hdr {
 	__be32 session_id;
 };

 struct ice_tc_l4_hdr {
 	__be16 dst_port;
 	__be16 src_port;
 };

 struct ice_tc_flower_lyr_2_4_hdrs {
 	/* L2 layer fields with their mask */
 	struct ice_tc_l2_hdr l2_key;
 	struct ice_tc_l2_hdr l2_mask;
 	struct ice_tc_vlan_hdr vlan_hdr;
 	struct ice_tc_vlan_hdr cvlan_hdr;
 	struct ice_tc_pppoe_hdr pppoe_hdr;
 	struct ice_tc_l2tpv3_hdr l2tpv3_hdr;
 	/* L3 (IPv4[6]) layer fields with their mask */
 	struct ice_tc_l3_hdr l3_key;
 	struct ice_tc_l3_hdr l3_mask;

 	/* L4 layer fields with their mask */
 	struct ice_tc_l4_hdr l4_key;
 	struct ice_tc_l4_hdr l4_mask;
 };

 enum ice_eswitch_fltr_direction {
 	ICE_ESWITCH_FLTR_INGRESS,
 	ICE_ESWITCH_FLTR_EGRESS,
 };

 struct ice_tc_flower_fltr {
 	struct hlist_node tc_flower_node;

 	/* cookie becomes filter_rule_id if rule is added successfully */
 	unsigned long cookie;

 	/* add_adv_rule returns information like recipe ID, rule_id. Store
 	 * those values since they are needed to remove advanced rule
 	 */
 	u16 rid;
 	u16 rule_id;
 	/* VSI handle of the destination VSI (it could be main PF VSI, CHNL_VSI,
 	 * VF VSI)
 	 */
 	u16 dest_vsi_handle;
 	/* ptr to destination VSI */
 	struct ice_vsi *dest_vsi;
 	/* direction of fltr for eswitch use case */
 	enum ice_eswitch_fltr_direction direction;

 	/* Parsed TC flower configuration params */
 	struct ice_tc_flower_lyr_2_4_hdrs outer_headers;
 	struct ice_tc_flower_lyr_2_4_hdrs inner_headers;
 	struct ice_vsi *src_vsi;
 	__be32 tenant_id;
 	struct gtp_pdu_session_info gtp_pdu_info_keys;
 	struct gtp_pdu_session_info gtp_pdu_info_masks;
 	u32 flags;
 	u8 tunnel_type;
 	struct ice_tc_flower_action	action;

 	/* cache ptr which is used wherever needed to communicate netlink
 	 * messages
 	 */
 	struct netlink_ext_ack *extack;
 };

 /**
  * ice_is_chnl_fltr - is this a valid channel filter
  * @f: Pointer to tc-flower filter
  *
  * Criteria to determine of given filter is valid channel filter
  * or not is based on its destination.
  * For forward to VSI action, if destination is valid hw_tc (aka tc_class)
  * and in supported range of TCs for ADQ, then return true.
  * For forward to queue, as long as dest_vsi is valid and it is of type
  * VSI_CHNL (PF ADQ VSI is of type VSI_CHNL), return true.
  * NOTE: For forward to queue, correct dest_vsi is still set in tc_fltr based
  * on destination queue specified.
  */
 static inline bool ice_is_chnl_fltr(struct ice_tc_flower_fltr *f)
 {
 	if (f->action.fltr_act == ICE_FWD_TO_VSI)
 		return f->action.fwd.tc.tc_class >= ICE_CHNL_START_TC &&
 		       f->action.fwd.tc.tc_class < ICE_CHNL_MAX_TC;
 	else if (f->action.fltr_act == ICE_FWD_TO_Q)
 		return f->dest_vsi && f->dest_vsi->type == ICE_VSI_CHNL;

 	return false;
 }

 /**
  * ice_chnl_dmac_fltr_cnt - DMAC based CHNL filter count
  * @pf: Pointer to PF
  */
 static inline int ice_chnl_dmac_fltr_cnt(struct ice_pf *pf)
 {
 	return pf->num_dmac_chnl_fltrs;
 }

 struct ice_vsi *ice_locate_vsi_using_queue(struct ice_vsi *vsi, int queue);
 int
 ice_add_cls_flower(struct net_device *netdev, struct ice_vsi *vsi,
 		   struct flow_cls_offload *cls_flower);
 int
 ice_del_cls_flower(struct ice_vsi *vsi, struct flow_cls_offload *cls_flower);
 void ice_replay_tc_fltrs(struct ice_pf *pf);
 bool ice_is_tunnel_supported(struct net_device *dev);

 static inline bool ice_is_forward_action(enum ice_sw_fwd_act_type fltr_act)
 {
 	switch (fltr_act) {
 	case ICE_FWD_TO_VSI:
 	case ICE_FWD_TO_Q:
 		return true;
 	default:
 		return false;
 	}
 }
 #endif /* _ICE_TC_LIB_H_ */
	/* SPDX-License-Identifier: GPL-2.0 */
	/* Copyright (C) 2019-2021, Intel Corporation. */

	#ifndef _ICE_TC_LIB_H_
	#define _ICE_TC_LIB_H_

	#define ICE_TC_FLWR_FIELD_DST_MAC BIT(0)
	#define ICE_TC_FLWR_FIELD_SRC_MAC BIT(1)
	#define ICE_TC_FLWR_FIELD_VLAN BIT(2)
	#define ICE_TC_FLWR_FIELD_DEST_IPV4 BIT(3)
	#define ICE_TC_FLWR_FIELD_SRC_IPV4 BIT(4)
	#define ICE_TC_FLWR_FIELD_DEST_IPV6 BIT(5)
	#define ICE_TC_FLWR_FIELD_SRC_IPV6 BIT(6)
	#define ICE_TC_FLWR_FIELD_DEST_L4_PORT BIT(7)
	#define ICE_TC_FLWR_FIELD_SRC_L4_PORT BIT(8)
	#define ICE_TC_FLWR_FIELD_TENANT_ID BIT(9)
	#define ICE_TC_FLWR_FIELD_ENC_DEST_IPV4 BIT(10)
	#define ICE_TC_FLWR_FIELD_ENC_SRC_IPV4 BIT(11)
	#define ICE_TC_FLWR_FIELD_ENC_DEST_IPV6 BIT(12)
	#define ICE_TC_FLWR_FIELD_ENC_SRC_IPV6 BIT(13)
	#define ICE_TC_FLWR_FIELD_ENC_DEST_L4_PORT BIT(14)
	#define ICE_TC_FLWR_FIELD_ENC_SRC_L4_PORT BIT(15)
	#define ICE_TC_FLWR_FIELD_ENC_DST_MAC BIT(16)
	#define ICE_TC_FLWR_FIELD_ETH_TYPE_ID BIT(17)
	#define ICE_TC_FLWR_FIELD_ENC_OPTS BIT(18)
	#define ICE_TC_FLWR_FIELD_CVLAN BIT(19)
	#define ICE_TC_FLWR_FIELD_PPPOE_SESSID BIT(20)
	#define ICE_TC_FLWR_FIELD_PPP_PROTO BIT(21)
	#define ICE_TC_FLWR_FIELD_IP_TOS BIT(22)
	#define ICE_TC_FLWR_FIELD_IP_TTL BIT(23)
	#define ICE_TC_FLWR_FIELD_ENC_IP_TOS BIT(24)
	#define ICE_TC_FLWR_FIELD_ENC_IP_TTL BIT(25)
	#define ICE_TC_FLWR_FIELD_L2TPV3_SESSID BIT(26)
	#define ICE_TC_FLWR_FIELD_VLAN_PRIO BIT(27)
	#define ICE_TC_FLWR_FIELD_CVLAN_PRIO BIT(28)
	#define ICE_TC_FLWR_FIELD_VLAN_TPID BIT(29)

	#define ICE_TC_FLOWER_MASK_32 0xFFFFFFFF

	#define ICE_IPV6_HDR_TC_MASK 0xFF00000

	struct ice_indr_block_priv {
	struct net_device *netdev;
	struct ice_netdev_priv *np;
	struct list_head list;
	};

	struct ice_tc_flower_action {
	/* forward action specific params */
	union {
	struct {
	u32 tc_class; /* forward to hw_tc */
	u32 rsvd;
	} tc;
	struct {
	u16 queue; /* forward to queue */
	/* To add filter in HW, absolute queue number in global
	* space of queues (between 0...N) is needed
	*/
	u16 hw_queue;
	} q;
	} fwd;
	enum ice_sw_fwd_act_type fltr_act;
	};

	struct ice_tc_vlan_hdr {
	__be16 vlan_id; /* Only last 12 bits valid */
	__be16 vlan_prio; /* Only last 3 bits valid (valid values: 0..7) */
	__be16 vlan_tpid;
	};

	struct ice_tc_pppoe_hdr {
	__be16 session_id;
	__be16 ppp_proto;
	};

	struct ice_tc_l2_hdr {
	u8 dst_mac[ETH_ALEN];
	u8 src_mac[ETH_ALEN];
	__be16 n_proto; /* Ethernet Protocol */
	};

	struct ice_tc_l3_hdr {
	u8 ip_proto; /* IPPROTO value */
	union {
	struct {
	struct in_addr dst_ip;
	struct in_addr src_ip;
	} v4;
	struct {
	struct in6_addr dst_ip6;
	struct in6_addr src_ip6;
	} v6;
	} ip;
	#define dst_ipv6 ip.v6.dst_ip6.s6_addr32
	#define dst_ipv6_addr ip.v6.dst_ip6.s6_addr
	#define src_ipv6 ip.v6.src_ip6.s6_addr32
	#define src_ipv6_addr ip.v6.src_ip6.s6_addr
	#define dst_ipv4 ip.v4.dst_ip.s_addr
	#define src_ipv4 ip.v4.src_ip.s_addr

	u8 tos;
	u8 ttl;
	};

	struct ice_tc_l2tpv3_hdr {
	__be32 session_id;
	};

	struct ice_tc_l4_hdr {
	__be16 dst_port;
	__be16 src_port;
	};

	struct ice_tc_flower_lyr_2_4_hdrs {
	/* L2 layer fields with their mask */
	struct ice_tc_l2_hdr l2_key;
	struct ice_tc_l2_hdr l2_mask;
	struct ice_tc_vlan_hdr vlan_hdr;
	struct ice_tc_vlan_hdr cvlan_hdr;
	struct ice_tc_pppoe_hdr pppoe_hdr;
	struct ice_tc_l2tpv3_hdr l2tpv3_hdr;
	/* L3 (IPv4[6]) layer fields with their mask */
	struct ice_tc_l3_hdr l3_key;
	struct ice_tc_l3_hdr l3_mask;

	/* L4 layer fields with their mask */
	struct ice_tc_l4_hdr l4_key;
	struct ice_tc_l4_hdr l4_mask;
	};

	enum ice_eswitch_fltr_direction {
	ICE_ESWITCH_FLTR_INGRESS,
	ICE_ESWITCH_FLTR_EGRESS,
	};

	struct ice_tc_flower_fltr {
	struct hlist_node tc_flower_node;

	/* cookie becomes filter_rule_id if rule is added successfully */
	unsigned long cookie;

	/* add_adv_rule returns information like recipe ID, rule_id. Store
	* those values since they are needed to remove advanced rule
	*/
	u16 rid;
	u16 rule_id;
	/* VSI handle of the destination VSI (it could be main PF VSI, CHNL_VSI,
	* VF VSI)
	*/
	u16 dest_vsi_handle;
	/* ptr to destination VSI */
	struct ice_vsi *dest_vsi;
	/* direction of fltr for eswitch use case */
	enum ice_eswitch_fltr_direction direction;

	/* Parsed TC flower configuration params */
	struct ice_tc_flower_lyr_2_4_hdrs outer_headers;
	struct ice_tc_flower_lyr_2_4_hdrs inner_headers;
	struct ice_vsi *src_vsi;
	__be32 tenant_id;
	struct gtp_pdu_session_info gtp_pdu_info_keys;
	struct gtp_pdu_session_info gtp_pdu_info_masks;
	u32 flags;
	u8 tunnel_type;
	struct ice_tc_flower_action action;

	/* cache ptr which is used wherever needed to communicate netlink
	* messages
	*/
	struct netlink_ext_ack *extack;
	};

	/**
	* ice_is_chnl_fltr - is this a valid channel filter
	* @f: Pointer to tc-flower filter
	*
	* Criteria to determine of given filter is valid channel filter
	* or not is based on its destination.
	* For forward to VSI action, if destination is valid hw_tc (aka tc_class)
	* and in supported range of TCs for ADQ, then return true.
	* For forward to queue, as long as dest_vsi is valid and it is of type
	* VSI_CHNL (PF ADQ VSI is of type VSI_CHNL), return true.
	* NOTE: For forward to queue, correct dest_vsi is still set in tc_fltr based
	* on destination queue specified.
	*/
	static inline bool ice_is_chnl_fltr(struct ice_tc_flower_fltr *f)
	{
	if (f->action.fltr_act == ICE_FWD_TO_VSI)
	return f->action.fwd.tc.tc_class >= ICE_CHNL_START_TC &&
	f->action.fwd.tc.tc_class < ICE_CHNL_MAX_TC;
	else if (f->action.fltr_act == ICE_FWD_TO_Q)
	return f->dest_vsi && f->dest_vsi->type == ICE_VSI_CHNL;

	return false;
	}

	/**
	* ice_chnl_dmac_fltr_cnt - DMAC based CHNL filter count
	* @pf: Pointer to PF
	*/
	static inline int ice_chnl_dmac_fltr_cnt(struct ice_pf *pf)
	{
	return pf->num_dmac_chnl_fltrs;
	}

	struct ice_vsi ice_locate_vsi_using_queue(struct ice_vsi vsi, int queue);
	int
	ice_add_cls_flower(struct net_device netdev, struct ice_vsi vsi,
	struct flow_cls_offload *cls_flower);
	int
	ice_del_cls_flower(struct ice_vsi vsi, struct flow_cls_offload cls_flower);
	void ice_replay_tc_fltrs(struct ice_pf *pf);
	bool ice_is_tunnel_supported(struct net_device *dev);

	static inline bool ice_is_forward_action(enum ice_sw_fwd_act_type fltr_act)
	{
	switch (fltr_act) {
	case ICE_FWD_TO_VSI:
	case ICE_FWD_TO_Q:
	return true;
	default:
	return false;
	}
	}
	#endif /* _ICE_TC_LIB_H_ */