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>
41 nfp_flower_compile_meta_tci(struct nfp_flower_meta_two *frame,
42 struct tc_cls_flower_offload *flow, u8 key_type,
45 struct fl_flow_key *target = mask_version ? flow->mask : flow->key;
46 struct flow_dissector_key_vlan *flow_vlan;
49 memset(frame, 0, sizeof(struct nfp_flower_meta_two));
50 /* Populate the metadata frame. */
51 frame->nfp_flow_key_layer = key_type;
54 if (dissector_uses_key(flow->dissector, FLOW_DISSECTOR_KEY_VLAN)) {
55 flow_vlan = skb_flow_dissector_target(flow->dissector,
56 FLOW_DISSECTOR_KEY_VLAN,
58 /* Populate the tci field. */
59 if (flow_vlan->vlan_id) {
60 tmp_tci = FIELD_PREP(NFP_FLOWER_MASK_VLAN_PRIO,
61 flow_vlan->vlan_priority) |
62 FIELD_PREP(NFP_FLOWER_MASK_VLAN_VID,
64 NFP_FLOWER_MASK_VLAN_CFI;
65 frame->tci = cpu_to_be16(tmp_tci);
71 nfp_flower_compile_meta(struct nfp_flower_meta_one *frame, u8 key_type)
73 frame->nfp_flow_key_layer = key_type;
79 nfp_flower_compile_port(struct nfp_flower_in_port *frame, u32 cmsg_port,
83 frame->in_port = cpu_to_be32(~0);
87 frame->in_port = cpu_to_be32(cmsg_port);
93 nfp_flower_compile_mac(struct nfp_flower_mac_mpls *frame,
94 struct tc_cls_flower_offload *flow,
97 struct fl_flow_key *target = mask_version ? flow->mask : flow->key;
98 struct flow_dissector_key_eth_addrs *addr;
100 memset(frame, 0, sizeof(struct nfp_flower_mac_mpls));
102 if (dissector_uses_key(flow->dissector, FLOW_DISSECTOR_KEY_ETH_ADDRS)) {
103 addr = skb_flow_dissector_target(flow->dissector,
104 FLOW_DISSECTOR_KEY_ETH_ADDRS,
106 /* Populate mac frame. */
107 ether_addr_copy(frame->mac_dst, &addr->dst[0]);
108 ether_addr_copy(frame->mac_src, &addr->src[0]);
112 frame->mpls_lse = cpu_to_be32(~0);
116 nfp_flower_compile_tport(struct nfp_flower_tp_ports *frame,
117 struct tc_cls_flower_offload *flow,
120 struct fl_flow_key *target = mask_version ? flow->mask : flow->key;
121 struct flow_dissector_key_ports *tp;
123 memset(frame, 0, sizeof(struct nfp_flower_tp_ports));
125 if (dissector_uses_key(flow->dissector, FLOW_DISSECTOR_KEY_PORTS)) {
126 tp = skb_flow_dissector_target(flow->dissector,
127 FLOW_DISSECTOR_KEY_PORTS,
129 frame->port_src = tp->src;
130 frame->port_dst = tp->dst;
135 nfp_flower_compile_ipv4(struct nfp_flower_ipv4 *frame,
136 struct tc_cls_flower_offload *flow,
139 struct fl_flow_key *target = mask_version ? flow->mask : flow->key;
140 struct flow_dissector_key_ipv4_addrs *addr;
141 struct flow_dissector_key_basic *basic;
143 /* Wildcard TOS/TTL for now. */
144 memset(frame, 0, sizeof(struct nfp_flower_ipv4));
146 if (dissector_uses_key(flow->dissector,
147 FLOW_DISSECTOR_KEY_IPV4_ADDRS)) {
148 addr = skb_flow_dissector_target(flow->dissector,
149 FLOW_DISSECTOR_KEY_IPV4_ADDRS,
151 frame->ipv4_src = addr->src;
152 frame->ipv4_dst = addr->dst;
155 if (dissector_uses_key(flow->dissector, FLOW_DISSECTOR_KEY_BASIC)) {
156 basic = skb_flow_dissector_target(flow->dissector,
157 FLOW_DISSECTOR_KEY_BASIC,
159 frame->proto = basic->ip_proto;
164 nfp_flower_compile_ipv6(struct nfp_flower_ipv6 *frame,
165 struct tc_cls_flower_offload *flow,
168 struct fl_flow_key *target = mask_version ? flow->mask : flow->key;
169 struct flow_dissector_key_ipv6_addrs *addr;
170 struct flow_dissector_key_basic *basic;
172 /* Wildcard LABEL/TOS/TTL for now. */
173 memset(frame, 0, sizeof(struct nfp_flower_ipv6));
175 if (dissector_uses_key(flow->dissector,
176 FLOW_DISSECTOR_KEY_IPV6_ADDRS)) {
177 addr = skb_flow_dissector_target(flow->dissector,
178 FLOW_DISSECTOR_KEY_IPV6_ADDRS,
180 frame->ipv6_src = addr->src;
181 frame->ipv6_dst = addr->dst;
184 if (dissector_uses_key(flow->dissector, FLOW_DISSECTOR_KEY_BASIC)) {
185 basic = skb_flow_dissector_target(flow->dissector,
186 FLOW_DISSECTOR_KEY_BASIC,
188 frame->proto = basic->ip_proto;
192 int nfp_flower_compile_flow_match(struct tc_cls_flower_offload *flow,
193 struct nfp_fl_key_ls *key_ls,
194 struct net_device *netdev,
195 struct nfp_fl_payload *nfp_flow)
201 memset(nfp_flow->unmasked_data, 0, key_ls->key_size);
202 memset(nfp_flow->mask_data, 0, key_ls->key_size);
204 ext = nfp_flow->unmasked_data;
205 msk = nfp_flow->mask_data;
206 if (NFP_FLOWER_LAYER_PORT & key_ls->key_layer) {
207 /* Populate Exact Metadata. */
208 nfp_flower_compile_meta_tci((struct nfp_flower_meta_two *)ext,
209 flow, key_ls->key_layer, false);
210 /* Populate Mask Metadata. */
211 nfp_flower_compile_meta_tci((struct nfp_flower_meta_two *)msk,
212 flow, key_ls->key_layer, true);
213 ext += sizeof(struct nfp_flower_meta_two);
214 msk += sizeof(struct nfp_flower_meta_two);
216 /* Populate Exact Port data. */
217 err = nfp_flower_compile_port((struct nfp_flower_in_port *)ext,
218 nfp_repr_get_port_id(netdev),
223 /* Populate Mask Port Data. */
224 err = nfp_flower_compile_port((struct nfp_flower_in_port *)msk,
225 nfp_repr_get_port_id(netdev),
230 ext += sizeof(struct nfp_flower_in_port);
231 msk += sizeof(struct nfp_flower_in_port);
233 /* Populate Exact Metadata. */
234 nfp_flower_compile_meta((struct nfp_flower_meta_one *)ext,
236 /* Populate Mask Metadata. */
237 nfp_flower_compile_meta((struct nfp_flower_meta_one *)msk,
239 ext += sizeof(struct nfp_flower_meta_one);
240 msk += sizeof(struct nfp_flower_meta_one);
243 if (NFP_FLOWER_LAYER_META & key_ls->key_layer) {
244 /* Additional Metadata Fields.
245 * Currently unsupported.
250 if (NFP_FLOWER_LAYER_MAC & key_ls->key_layer) {
251 /* Populate Exact MAC Data. */
252 nfp_flower_compile_mac((struct nfp_flower_mac_mpls *)ext,
254 /* Populate Mask MAC Data. */
255 nfp_flower_compile_mac((struct nfp_flower_mac_mpls *)msk,
257 ext += sizeof(struct nfp_flower_mac_mpls);
258 msk += sizeof(struct nfp_flower_mac_mpls);
261 if (NFP_FLOWER_LAYER_TP & key_ls->key_layer) {
262 /* Populate Exact TP Data. */
263 nfp_flower_compile_tport((struct nfp_flower_tp_ports *)ext,
265 /* Populate Mask TP Data. */
266 nfp_flower_compile_tport((struct nfp_flower_tp_ports *)msk,
268 ext += sizeof(struct nfp_flower_tp_ports);
269 msk += sizeof(struct nfp_flower_tp_ports);
272 if (NFP_FLOWER_LAYER_IPV4 & key_ls->key_layer) {
273 /* Populate Exact IPv4 Data. */
274 nfp_flower_compile_ipv4((struct nfp_flower_ipv4 *)ext,
276 /* Populate Mask IPv4 Data. */
277 nfp_flower_compile_ipv4((struct nfp_flower_ipv4 *)msk,
279 ext += sizeof(struct nfp_flower_ipv4);
280 msk += sizeof(struct nfp_flower_ipv4);
283 if (NFP_FLOWER_LAYER_IPV6 & key_ls->key_layer) {
284 /* Populate Exact IPv4 Data. */
285 nfp_flower_compile_ipv6((struct nfp_flower_ipv6 *)ext,
287 /* Populate Mask IPv4 Data. */
288 nfp_flower_compile_ipv6((struct nfp_flower_ipv6 *)msk,
290 ext += sizeof(struct nfp_flower_ipv6);
291 msk += sizeof(struct nfp_flower_ipv6);