1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* Copyright (C) 2019-2021, Intel Corporation. */
3 
4 #ifndef _ICE_TC_LIB_H_
5 #define _ICE_TC_LIB_H_
6 
7 #define ICE_TC_FLWR_FIELD_DST_MAC		BIT(0)
8 #define ICE_TC_FLWR_FIELD_SRC_MAC		BIT(1)
9 #define ICE_TC_FLWR_FIELD_VLAN			BIT(2)
10 #define ICE_TC_FLWR_FIELD_DEST_IPV4		BIT(3)
11 #define ICE_TC_FLWR_FIELD_SRC_IPV4		BIT(4)
12 #define ICE_TC_FLWR_FIELD_DEST_IPV6		BIT(5)
13 #define ICE_TC_FLWR_FIELD_SRC_IPV6		BIT(6)
14 #define ICE_TC_FLWR_FIELD_DEST_L4_PORT		BIT(7)
15 #define ICE_TC_FLWR_FIELD_SRC_L4_PORT		BIT(8)
16 #define ICE_TC_FLWR_FIELD_TENANT_ID		BIT(9)
17 #define ICE_TC_FLWR_FIELD_ENC_DEST_IPV4		BIT(10)
18 #define ICE_TC_FLWR_FIELD_ENC_SRC_IPV4		BIT(11)
19 #define ICE_TC_FLWR_FIELD_ENC_DEST_IPV6		BIT(12)
20 #define ICE_TC_FLWR_FIELD_ENC_SRC_IPV6		BIT(13)
21 #define ICE_TC_FLWR_FIELD_ENC_DEST_L4_PORT	BIT(14)
22 #define ICE_TC_FLWR_FIELD_ENC_SRC_L4_PORT	BIT(15)
23 #define ICE_TC_FLWR_FIELD_ENC_DST_MAC		BIT(16)
24 #define ICE_TC_FLWR_FIELD_ETH_TYPE_ID		BIT(17)
25 #define ICE_TC_FLWR_FIELD_ENC_OPTS		BIT(18)
26 
27 #define ICE_TC_FLOWER_MASK_32   0xFFFFFFFF
28 
29 struct ice_indr_block_priv {
30 	struct net_device *netdev;
31 	struct ice_netdev_priv *np;
32 	struct list_head list;
33 };
34 
35 struct ice_tc_flower_action {
36 	u32 tc_class;
37 	enum ice_sw_fwd_act_type fltr_act;
38 };
39 
40 struct ice_tc_vlan_hdr {
41 	__be16 vlan_id; /* Only last 12 bits valid */
42 	u16 vlan_prio; /* Only last 3 bits valid (valid values: 0..7) */
43 };
44 
45 struct ice_tc_l2_hdr {
46 	u8 dst_mac[ETH_ALEN];
47 	u8 src_mac[ETH_ALEN];
48 	__be16 n_proto;    /* Ethernet Protocol */
49 };
50 
51 struct ice_tc_l3_hdr {
52 	u8 ip_proto;    /* IPPROTO value */
53 	union {
54 		struct {
55 			struct in_addr dst_ip;
56 			struct in_addr src_ip;
57 		} v4;
58 		struct {
59 			struct in6_addr dst_ip6;
60 			struct in6_addr src_ip6;
61 		} v6;
62 	} ip;
63 #define dst_ipv6	ip.v6.dst_ip6.s6_addr32
64 #define dst_ipv6_addr	ip.v6.dst_ip6.s6_addr
65 #define src_ipv6	ip.v6.src_ip6.s6_addr32
66 #define src_ipv6_addr	ip.v6.src_ip6.s6_addr
67 #define dst_ipv4	ip.v4.dst_ip.s_addr
68 #define src_ipv4	ip.v4.src_ip.s_addr
69 
70 	u8 tos;
71 	u8 ttl;
72 };
73 
74 struct ice_tc_l4_hdr {
75 	__be16 dst_port;
76 	__be16 src_port;
77 };
78 
79 struct ice_tc_flower_lyr_2_4_hdrs {
80 	/* L2 layer fields with their mask */
81 	struct ice_tc_l2_hdr l2_key;
82 	struct ice_tc_l2_hdr l2_mask;
83 	struct ice_tc_vlan_hdr vlan_hdr;
84 	/* L3 (IPv4[6]) layer fields with their mask */
85 	struct ice_tc_l3_hdr l3_key;
86 	struct ice_tc_l3_hdr l3_mask;
87 
88 	/* L4 layer fields with their mask */
89 	struct ice_tc_l4_hdr l4_key;
90 	struct ice_tc_l4_hdr l4_mask;
91 };
92 
93 enum ice_eswitch_fltr_direction {
94 	ICE_ESWITCH_FLTR_INGRESS,
95 	ICE_ESWITCH_FLTR_EGRESS,
96 };
97 
98 struct ice_tc_flower_fltr {
99 	struct hlist_node tc_flower_node;
100 
101 	/* cookie becomes filter_rule_id if rule is added successfully */
102 	unsigned long cookie;
103 
104 	/* add_adv_rule returns information like recipe ID, rule_id. Store
105 	 * those values since they are needed to remove advanced rule
106 	 */
107 	u16 rid;
108 	u16 rule_id;
109 	/* this could be queue/vsi_idx (sw handle)/queue_group, depending upon
110 	 * destination type
111 	 */
112 	u16 dest_id;
113 	/* if dest_id is vsi_idx, then need to store destination VSI ptr */
114 	struct ice_vsi *dest_vsi;
115 	/* direction of fltr for eswitch use case */
116 	enum ice_eswitch_fltr_direction direction;
117 
118 	/* Parsed TC flower configuration params */
119 	struct ice_tc_flower_lyr_2_4_hdrs outer_headers;
120 	struct ice_tc_flower_lyr_2_4_hdrs inner_headers;
121 	struct ice_vsi *src_vsi;
122 	__be32 tenant_id;
123 	struct gtp_pdu_session_info gtp_pdu_info_keys;
124 	struct gtp_pdu_session_info gtp_pdu_info_masks;
125 	u32 flags;
126 	u8 tunnel_type;
127 	struct ice_tc_flower_action	action;
128 
129 	/* cache ptr which is used wherever needed to communicate netlink
130 	 * messages
131 	 */
132 	struct netlink_ext_ack *extack;
133 };
134 
135 /**
136  * ice_is_chnl_fltr - is this a valid channel filter
137  * @f: Pointer to tc-flower filter
138  *
139  * Criteria to determine of given filter is valid channel filter
140  * or not is based on its "destination". If destination is hw_tc (aka tc_class)
141  * and it is non-zero, then it is valid channel (aka ADQ) filter
142  */
ice_is_chnl_fltr(struct ice_tc_flower_fltr * f)143 static inline bool ice_is_chnl_fltr(struct ice_tc_flower_fltr *f)
144 {
145 	return !!f->action.tc_class;
146 }
147 
148 /**
149  * ice_chnl_dmac_fltr_cnt - DMAC based CHNL filter count
150  * @pf: Pointer to PF
151  */
ice_chnl_dmac_fltr_cnt(struct ice_pf * pf)152 static inline int ice_chnl_dmac_fltr_cnt(struct ice_pf *pf)
153 {
154 	return pf->num_dmac_chnl_fltrs;
155 }
156 
157 int
158 ice_add_cls_flower(struct net_device *netdev, struct ice_vsi *vsi,
159 		   struct flow_cls_offload *cls_flower);
160 int
161 ice_del_cls_flower(struct ice_vsi *vsi, struct flow_cls_offload *cls_flower);
162 void ice_replay_tc_fltrs(struct ice_pf *pf);
163 bool ice_is_tunnel_supported(struct net_device *dev);
164 
165 #endif /* _ICE_TC_LIB_H_ */
166