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 flow_dissector_key_vlan *flow_vlan;
48 /* Populate the metadata frame. */
49 frame->nfp_flow_key_layer = key_type;
53 frame->tci = cpu_to_be16(~0);
57 flow_vlan = skb_flow_dissector_target(flow->dissector,
58 FLOW_DISSECTOR_KEY_VLAN,
61 /* Populate the tci field. */
62 if (!flow_vlan->vlan_id) {
65 tmp_tci = FIELD_PREP(NFP_FLOWER_MASK_VLAN_PRIO,
66 flow_vlan->vlan_priority) |
67 FIELD_PREP(NFP_FLOWER_MASK_VLAN_VID,
69 NFP_FLOWER_MASK_VLAN_CFI;
71 frame->tci = cpu_to_be16(tmp_tci);
75 nfp_flower_compile_meta(struct nfp_flower_meta_one *frame, u8 key_type)
77 frame->nfp_flow_key_layer = key_type;
83 nfp_flower_compile_port(struct nfp_flower_in_port *frame, u32 cmsg_port,
87 frame->in_port = cpu_to_be32(~0);
91 frame->in_port = cpu_to_be32(cmsg_port);
97 nfp_flower_compile_mac(struct nfp_flower_mac_mpls *frame,
98 struct tc_cls_flower_offload *flow,
101 struct fl_flow_key *target = mask_version ? flow->mask : flow->key;
102 struct flow_dissector_key_eth_addrs *flow_mac;
104 flow_mac = skb_flow_dissector_target(flow->dissector,
105 FLOW_DISSECTOR_KEY_ETH_ADDRS,
108 memset(frame, 0, sizeof(struct nfp_flower_mac_mpls));
110 /* Populate mac frame. */
111 ether_addr_copy(frame->mac_dst, &flow_mac->dst[0]);
112 ether_addr_copy(frame->mac_src, &flow_mac->src[0]);
115 frame->mpls_lse = cpu_to_be32(~0);
119 nfp_flower_compile_tport(struct nfp_flower_tp_ports *frame,
120 struct tc_cls_flower_offload *flow,
123 struct fl_flow_key *target = mask_version ? flow->mask : flow->key;
124 struct flow_dissector_key_ports *flow_tp;
126 flow_tp = skb_flow_dissector_target(flow->dissector,
127 FLOW_DISSECTOR_KEY_PORTS,
130 frame->port_src = flow_tp->src;
131 frame->port_dst = flow_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 *flow_ipv4;
141 struct flow_dissector_key_basic *flow_basic;
143 flow_ipv4 = skb_flow_dissector_target(flow->dissector,
144 FLOW_DISSECTOR_KEY_IPV4_ADDRS,
147 flow_basic = skb_flow_dissector_target(flow->dissector,
148 FLOW_DISSECTOR_KEY_BASIC,
151 /* Populate IPv4 frame. */
153 frame->ipv4_src = flow_ipv4->src;
154 frame->ipv4_dst = flow_ipv4->dst;
155 frame->proto = flow_basic->ip_proto;
156 /* Wildcard TOS/TTL for now. */
162 nfp_flower_compile_ipv6(struct nfp_flower_ipv6 *frame,
163 struct tc_cls_flower_offload *flow,
166 struct fl_flow_key *target = mask_version ? flow->mask : flow->key;
167 struct flow_dissector_key_ipv6_addrs *flow_ipv6;
168 struct flow_dissector_key_basic *flow_basic;
170 flow_ipv6 = skb_flow_dissector_target(flow->dissector,
171 FLOW_DISSECTOR_KEY_IPV6_ADDRS,
174 flow_basic = skb_flow_dissector_target(flow->dissector,
175 FLOW_DISSECTOR_KEY_BASIC,
178 /* Populate IPv6 frame. */
180 frame->ipv6_src = flow_ipv6->src;
181 frame->ipv6_dst = flow_ipv6->dst;
182 frame->proto = flow_basic->ip_proto;
183 /* Wildcard LABEL/TOS/TTL for now. */
184 frame->ipv6_flow_label_exthdr = 0;
189 int nfp_flower_compile_flow_match(struct tc_cls_flower_offload *flow,
190 struct nfp_fl_key_ls *key_ls,
191 struct net_device *netdev,
192 struct nfp_fl_payload *nfp_flow)
198 memset(nfp_flow->unmasked_data, 0, key_ls->key_size);
199 memset(nfp_flow->mask_data, 0, key_ls->key_size);
201 ext = nfp_flow->unmasked_data;
202 msk = nfp_flow->mask_data;
203 if (NFP_FLOWER_LAYER_PORT & key_ls->key_layer) {
204 /* Populate Exact Metadata. */
205 nfp_flower_compile_meta_tci((struct nfp_flower_meta_two *)ext,
206 flow, key_ls->key_layer, false);
207 /* Populate Mask Metadata. */
208 nfp_flower_compile_meta_tci((struct nfp_flower_meta_two *)msk,
209 flow, key_ls->key_layer, true);
210 ext += sizeof(struct nfp_flower_meta_two);
211 msk += sizeof(struct nfp_flower_meta_two);
213 /* Populate Exact Port data. */
214 err = nfp_flower_compile_port((struct nfp_flower_in_port *)ext,
215 nfp_repr_get_port_id(netdev),
220 /* Populate Mask Port Data. */
221 err = nfp_flower_compile_port((struct nfp_flower_in_port *)msk,
222 nfp_repr_get_port_id(netdev),
227 ext += sizeof(struct nfp_flower_in_port);
228 msk += sizeof(struct nfp_flower_in_port);
230 /* Populate Exact Metadata. */
231 nfp_flower_compile_meta((struct nfp_flower_meta_one *)ext,
233 /* Populate Mask Metadata. */
234 nfp_flower_compile_meta((struct nfp_flower_meta_one *)msk,
236 ext += sizeof(struct nfp_flower_meta_one);
237 msk += sizeof(struct nfp_flower_meta_one);
240 if (NFP_FLOWER_LAYER_META & key_ls->key_layer) {
241 /* Additional Metadata Fields.
242 * Currently unsupported.
247 if (NFP_FLOWER_LAYER_MAC & key_ls->key_layer) {
248 /* Populate Exact MAC Data. */
249 nfp_flower_compile_mac((struct nfp_flower_mac_mpls *)ext,
251 /* Populate Mask MAC Data. */
252 nfp_flower_compile_mac((struct nfp_flower_mac_mpls *)msk,
254 ext += sizeof(struct nfp_flower_mac_mpls);
255 msk += sizeof(struct nfp_flower_mac_mpls);
258 if (NFP_FLOWER_LAYER_TP & key_ls->key_layer) {
259 /* Populate Exact TP Data. */
260 nfp_flower_compile_tport((struct nfp_flower_tp_ports *)ext,
262 /* Populate Mask TP Data. */
263 nfp_flower_compile_tport((struct nfp_flower_tp_ports *)msk,
265 ext += sizeof(struct nfp_flower_tp_ports);
266 msk += sizeof(struct nfp_flower_tp_ports);
269 if (NFP_FLOWER_LAYER_IPV4 & key_ls->key_layer) {
270 /* Populate Exact IPv4 Data. */
271 nfp_flower_compile_ipv4((struct nfp_flower_ipv4 *)ext,
273 /* Populate Mask IPv4 Data. */
274 nfp_flower_compile_ipv4((struct nfp_flower_ipv4 *)msk,
276 ext += sizeof(struct nfp_flower_ipv4);
277 msk += sizeof(struct nfp_flower_ipv4);
280 if (NFP_FLOWER_LAYER_IPV6 & key_ls->key_layer) {
281 /* Populate Exact IPv4 Data. */
282 nfp_flower_compile_ipv6((struct nfp_flower_ipv6 *)ext,
284 /* Populate Mask IPv4 Data. */
285 nfp_flower_compile_ipv6((struct nfp_flower_ipv6 *)msk,
287 ext += sizeof(struct nfp_flower_ipv6);
288 msk += sizeof(struct nfp_flower_ipv6);