1 // SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
2 // Copyright (c) 2021, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
3
4 #include "act.h"
5 #include "en/tc/post_act.h"
6 #include "en/tc_priv.h"
7 #include "mlx5_core.h"
8
9 static struct mlx5e_tc_act *tc_acts_fdb[NUM_FLOW_ACTIONS] = {
10 [FLOW_ACTION_ACCEPT] = &mlx5e_tc_act_accept,
11 [FLOW_ACTION_DROP] = &mlx5e_tc_act_drop,
12 [FLOW_ACTION_TRAP] = &mlx5e_tc_act_trap,
13 [FLOW_ACTION_GOTO] = &mlx5e_tc_act_goto,
14 [FLOW_ACTION_REDIRECT] = &mlx5e_tc_act_mirred,
15 [FLOW_ACTION_MIRRED] = &mlx5e_tc_act_mirred,
16 [FLOW_ACTION_REDIRECT_INGRESS] = &mlx5e_tc_act_redirect_ingress,
17 [FLOW_ACTION_VLAN_PUSH] = &mlx5e_tc_act_vlan,
18 [FLOW_ACTION_VLAN_POP] = &mlx5e_tc_act_vlan,
19 [FLOW_ACTION_VLAN_MANGLE] = &mlx5e_tc_act_vlan_mangle,
20 [FLOW_ACTION_TUNNEL_ENCAP] = &mlx5e_tc_act_tun_encap,
21 [FLOW_ACTION_TUNNEL_DECAP] = &mlx5e_tc_act_tun_decap,
22 [FLOW_ACTION_MANGLE] = &mlx5e_tc_act_pedit,
23 [FLOW_ACTION_ADD] = &mlx5e_tc_act_pedit,
24 [FLOW_ACTION_CSUM] = &mlx5e_tc_act_csum,
25 [FLOW_ACTION_PTYPE] = &mlx5e_tc_act_ptype,
26 [FLOW_ACTION_SAMPLE] = &mlx5e_tc_act_sample,
27 [FLOW_ACTION_POLICE] = &mlx5e_tc_act_police,
28 [FLOW_ACTION_CT] = &mlx5e_tc_act_ct,
29 [FLOW_ACTION_MPLS_PUSH] = &mlx5e_tc_act_mpls_push,
30 [FLOW_ACTION_MPLS_POP] = &mlx5e_tc_act_mpls_pop,
31 [FLOW_ACTION_VLAN_PUSH_ETH] = &mlx5e_tc_act_vlan,
32 [FLOW_ACTION_VLAN_POP_ETH] = &mlx5e_tc_act_vlan,
33 };
34
35 static struct mlx5e_tc_act *tc_acts_nic[NUM_FLOW_ACTIONS] = {
36 [FLOW_ACTION_ACCEPT] = &mlx5e_tc_act_accept,
37 [FLOW_ACTION_DROP] = &mlx5e_tc_act_drop,
38 [FLOW_ACTION_GOTO] = &mlx5e_tc_act_goto,
39 [FLOW_ACTION_REDIRECT] = &mlx5e_tc_act_mirred_nic,
40 [FLOW_ACTION_MANGLE] = &mlx5e_tc_act_pedit,
41 [FLOW_ACTION_ADD] = &mlx5e_tc_act_pedit,
42 [FLOW_ACTION_CSUM] = &mlx5e_tc_act_csum,
43 [FLOW_ACTION_MARK] = &mlx5e_tc_act_mark,
44 [FLOW_ACTION_CT] = &mlx5e_tc_act_ct,
45 };
46
47 /**
48 * mlx5e_tc_act_get() - Get an action parser for an action id.
49 * @act_id: Flow action id.
50 * @ns_type: flow namespace type.
51 */
52 struct mlx5e_tc_act *
mlx5e_tc_act_get(enum flow_action_id act_id,enum mlx5_flow_namespace_type ns_type)53 mlx5e_tc_act_get(enum flow_action_id act_id,
54 enum mlx5_flow_namespace_type ns_type)
55 {
56 struct mlx5e_tc_act **tc_acts;
57
58 tc_acts = ns_type == MLX5_FLOW_NAMESPACE_FDB ? tc_acts_fdb : tc_acts_nic;
59
60 return tc_acts[act_id];
61 }
62
63 /**
64 * mlx5e_tc_act_init_parse_state() - Init a new parse_state.
65 * @parse_state: Parsing state.
66 * @flow: mlx5e tc flow being handled.
67 * @flow_action: flow action to parse.
68 * @extack: to set an error msg.
69 *
70 * The same parse_state should be passed to action parsers
71 * for tracking the current parsing state.
72 */
73 void
mlx5e_tc_act_init_parse_state(struct mlx5e_tc_act_parse_state * parse_state,struct mlx5e_tc_flow * flow,struct flow_action * flow_action,struct netlink_ext_ack * extack)74 mlx5e_tc_act_init_parse_state(struct mlx5e_tc_act_parse_state *parse_state,
75 struct mlx5e_tc_flow *flow,
76 struct flow_action *flow_action,
77 struct netlink_ext_ack *extack)
78 {
79 memset(parse_state, 0, sizeof(*parse_state));
80 parse_state->flow = flow;
81 parse_state->extack = extack;
82 parse_state->flow_action = flow_action;
83 }
84
85 void
mlx5e_tc_act_reorder_flow_actions(struct flow_action * flow_action,struct mlx5e_tc_flow_action * flow_action_reorder)86 mlx5e_tc_act_reorder_flow_actions(struct flow_action *flow_action,
87 struct mlx5e_tc_flow_action *flow_action_reorder)
88 {
89 struct flow_action_entry *act;
90 int i, j = 0;
91
92 flow_action_for_each(i, act, flow_action) {
93 /* Add CT action to be first. */
94 if (act->id == FLOW_ACTION_CT)
95 flow_action_reorder->entries[j++] = act;
96 }
97
98 flow_action_for_each(i, act, flow_action) {
99 if (act->id == FLOW_ACTION_CT)
100 continue;
101 flow_action_reorder->entries[j++] = act;
102 }
103 }
104
105 int
mlx5e_tc_act_post_parse(struct mlx5e_tc_act_parse_state * parse_state,struct flow_action * flow_action,struct mlx5_flow_attr * attr,enum mlx5_flow_namespace_type ns_type)106 mlx5e_tc_act_post_parse(struct mlx5e_tc_act_parse_state *parse_state,
107 struct flow_action *flow_action,
108 struct mlx5_flow_attr *attr,
109 enum mlx5_flow_namespace_type ns_type)
110 {
111 struct flow_action_entry *act;
112 struct mlx5e_tc_act *tc_act;
113 struct mlx5e_priv *priv;
114 int err = 0, i;
115
116 priv = parse_state->flow->priv;
117
118 flow_action_for_each(i, act, flow_action) {
119 tc_act = mlx5e_tc_act_get(act->id, ns_type);
120 if (!tc_act || !tc_act->post_parse)
121 continue;
122
123 err = tc_act->post_parse(parse_state, priv, attr);
124 if (err)
125 goto out;
126 }
127
128 out:
129 return err;
130 }
131
132 int
mlx5e_tc_act_set_next_post_act(struct mlx5e_tc_flow * flow,struct mlx5_flow_attr * attr,struct mlx5_flow_attr * next_attr)133 mlx5e_tc_act_set_next_post_act(struct mlx5e_tc_flow *flow,
134 struct mlx5_flow_attr *attr,
135 struct mlx5_flow_attr *next_attr)
136 {
137 struct mlx5_core_dev *mdev = flow->priv->mdev;
138 struct mlx5e_tc_mod_hdr_acts *mod_acts;
139 int err;
140
141 mod_acts = &attr->parse_attr->mod_hdr_acts;
142
143 /* Set handle on current post act rule to next post act rule. */
144 err = mlx5e_tc_post_act_set_handle(mdev, next_attr->post_act_handle, mod_acts);
145 if (err) {
146 mlx5_core_warn(mdev, "Failed setting post action handle");
147 return err;
148 }
149
150 attr->action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST |
151 MLX5_FLOW_CONTEXT_ACTION_MOD_HDR;
152
153 return 0;
154 }
155