2 * Copyright (C) 2017 Netronome Systems, Inc.
4 * This software is dual licensed under the GNU General License Version 2,
5 * June 1991 as shown in the file COPYING in the top-level directory of this
6 * source tree or the BSD 2-Clause License provided below. You have the
7 * option to license this software under the complete terms of either license.
9 * The BSD 2-Clause License:
11 * Redistribution and use in source and binary forms, with or
12 * without modification, are permitted provided that the following
15 * 1. Redistributions of source code must retain the above
16 * copyright notice, this list of conditions and the following
19 * 2. Redistributions in binary form must reproduce the above
20 * copyright notice, this list of conditions and the following
21 * disclaimer in the documentation and/or other materials
22 * provided with the distribution.
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
34 #include <linux/bitfield.h>
35 #include <net/pkt_cls.h>
36 #include <net/switchdev.h>
37 #include <net/tc_act/tc_gact.h>
38 #include <net/tc_act/tc_mirred.h>
39 #include <net/tc_act/tc_vlan.h>
43 #include "../nfp_net_repr.h"
45 static void nfp_fl_pop_vlan(struct nfp_fl_pop_vlan *pop_vlan)
47 size_t act_size = sizeof(struct nfp_fl_pop_vlan);
51 FIELD_PREP(NFP_FL_ACT_LEN_LW, act_size >> NFP_FL_LW_SIZ) |
52 FIELD_PREP(NFP_FL_ACT_JMP_ID, NFP_FL_ACTION_OPCODE_POP_VLAN);
54 pop_vlan->a_op = cpu_to_be16(tmp_pop_vlan_op);
55 pop_vlan->reserved = 0;
59 nfp_fl_push_vlan(struct nfp_fl_push_vlan *push_vlan,
60 const struct tc_action *action)
62 size_t act_size = sizeof(struct nfp_fl_push_vlan);
63 struct tcf_vlan *vlan = to_vlan(action);
64 u16 tmp_push_vlan_tci;
68 FIELD_PREP(NFP_FL_ACT_LEN_LW, act_size >> NFP_FL_LW_SIZ) |
69 FIELD_PREP(NFP_FL_ACT_JMP_ID, NFP_FL_ACTION_OPCODE_PUSH_VLAN);
71 push_vlan->a_op = cpu_to_be16(tmp_push_vlan_op);
72 /* Set action push vlan parameters. */
73 push_vlan->reserved = 0;
74 push_vlan->vlan_tpid = tcf_vlan_push_proto(action);
77 FIELD_PREP(NFP_FL_PUSH_VLAN_PRIO, vlan->tcfv_push_prio) |
78 FIELD_PREP(NFP_FL_PUSH_VLAN_VID, vlan->tcfv_push_vid) |
80 push_vlan->vlan_tci = cpu_to_be16(tmp_push_vlan_tci);
84 nfp_fl_output(struct nfp_fl_output *output, const struct tc_action *action,
85 struct nfp_fl_payload *nfp_flow, bool last,
86 struct net_device *in_dev)
88 size_t act_size = sizeof(struct nfp_fl_output);
89 struct net_device *out_dev;
93 /* Set action opcode to output action. */
95 FIELD_PREP(NFP_FL_ACT_LEN_LW, act_size >> NFP_FL_LW_SIZ) |
96 FIELD_PREP(NFP_FL_ACT_JMP_ID, NFP_FL_ACTION_OPCODE_OUTPUT);
98 output->a_op = cpu_to_be16(tmp_output_op);
100 /* Set action output parameters. */
101 output->flags = cpu_to_be16(last ? NFP_FL_OUT_FLAGS_LAST : 0);
103 ifindex = tcf_mirred_ifindex(action);
104 out_dev = __dev_get_by_index(dev_net(in_dev), ifindex);
108 /* Only offload egress ports are on the same device as the ingress
111 if (!switchdev_port_same_parent_id(in_dev, out_dev))
113 if (!nfp_netdev_is_nfp_repr(out_dev))
116 output->port = cpu_to_be32(nfp_repr_get_port_id(out_dev));
120 nfp_flow->meta.shortcut = output->port;
126 nfp_flower_loop_action(const struct tc_action *a,
127 struct nfp_fl_payload *nfp_fl, int *a_len,
128 struct net_device *netdev)
130 struct nfp_fl_push_vlan *psh_v;
131 struct nfp_fl_pop_vlan *pop_v;
132 struct nfp_fl_output *output;
135 if (is_tcf_gact_shot(a)) {
136 nfp_fl->meta.shortcut = cpu_to_be32(NFP_FL_SC_ACT_DROP);
137 } else if (is_tcf_mirred_egress_redirect(a)) {
138 if (*a_len + sizeof(struct nfp_fl_output) > NFP_FL_MAX_A_SIZ)
141 output = (struct nfp_fl_output *)&nfp_fl->action_data[*a_len];
142 err = nfp_fl_output(output, a, nfp_fl, true, netdev);
146 *a_len += sizeof(struct nfp_fl_output);
147 } else if (is_tcf_mirred_egress_mirror(a)) {
148 if (*a_len + sizeof(struct nfp_fl_output) > NFP_FL_MAX_A_SIZ)
151 output = (struct nfp_fl_output *)&nfp_fl->action_data[*a_len];
152 err = nfp_fl_output(output, a, nfp_fl, false, netdev);
156 *a_len += sizeof(struct nfp_fl_output);
157 } else if (is_tcf_vlan(a) && tcf_vlan_action(a) == TCA_VLAN_ACT_POP) {
158 if (*a_len + sizeof(struct nfp_fl_pop_vlan) > NFP_FL_MAX_A_SIZ)
161 pop_v = (struct nfp_fl_pop_vlan *)&nfp_fl->action_data[*a_len];
162 nfp_fl->meta.shortcut = cpu_to_be32(NFP_FL_SC_ACT_POPV);
164 nfp_fl_pop_vlan(pop_v);
165 *a_len += sizeof(struct nfp_fl_pop_vlan);
166 } else if (is_tcf_vlan(a) && tcf_vlan_action(a) == TCA_VLAN_ACT_PUSH) {
167 if (*a_len + sizeof(struct nfp_fl_push_vlan) > NFP_FL_MAX_A_SIZ)
170 psh_v = (struct nfp_fl_push_vlan *)&nfp_fl->action_data[*a_len];
171 nfp_fl->meta.shortcut = cpu_to_be32(NFP_FL_SC_ACT_NULL);
173 nfp_fl_push_vlan(psh_v, a);
174 *a_len += sizeof(struct nfp_fl_push_vlan);
176 /* Currently we do not handle any other actions. */
183 int nfp_flower_compile_action(struct tc_cls_flower_offload *flow,
184 struct net_device *netdev,
185 struct nfp_fl_payload *nfp_flow)
187 int act_len, act_cnt, err;
188 const struct tc_action *a;
191 memset(nfp_flow->action_data, 0, NFP_FL_MAX_A_SIZ);
192 nfp_flow->meta.act_len = 0;
196 tcf_exts_to_list(flow->exts, &actions);
197 list_for_each_entry(a, &actions, list) {
198 err = nfp_flower_loop_action(a, nfp_flow, &act_len, netdev);
204 /* We optimise when the action list is small, this can unfortunately
205 * not happen once we have more than one action in the action list.
208 nfp_flow->meta.shortcut = cpu_to_be32(NFP_FL_SC_ACT_NULL);
210 nfp_flow->meta.act_len = act_len;