1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (C) 2020 Felix Fietkau <nbd@nbd.name>
6 #include <linux/if_ether.h>
7 #include <linux/rhashtable.h>
9 #include <linux/ipv6.h>
10 #include <net/flow_offload.h>
11 #include <net/pkt_cls.h>
13 #include "mtk_eth_soc.h"
16 struct mtk_flow_data {
26 struct in6_addr src_addr;
27 struct in6_addr dst_addr;
47 static const struct rhashtable_params mtk_flow_ht_params = {
48 .head_offset = offsetof(struct mtk_flow_entry, node),
49 .key_offset = offsetof(struct mtk_flow_entry, cookie),
50 .key_len = sizeof(unsigned long),
51 .automatic_shrinking = true,
55 mtk_flow_set_ipv4_addr(struct mtk_eth *eth, struct mtk_foe_entry *foe,
56 struct mtk_flow_data *data, bool egress)
58 return mtk_foe_entry_set_ipv4_tuple(eth, foe, egress,
59 data->v4.src_addr, data->src_port,
60 data->v4.dst_addr, data->dst_port);
64 mtk_flow_set_ipv6_addr(struct mtk_eth *eth, struct mtk_foe_entry *foe,
65 struct mtk_flow_data *data)
67 return mtk_foe_entry_set_ipv6_tuple(eth, foe,
68 data->v6.src_addr.s6_addr32, data->src_port,
69 data->v6.dst_addr.s6_addr32, data->dst_port);
73 mtk_flow_offload_mangle_eth(const struct flow_action_entry *act, void *eth)
75 void *dest = eth + act->mangle.offset;
76 const void *src = &act->mangle.val;
78 if (act->mangle.offset > 8)
81 if (act->mangle.mask == 0xffff) {
86 memcpy(dest, src, act->mangle.mask ? 2 : 4);
90 mtk_flow_get_wdma_info(struct net_device *dev, const u8 *addr, struct mtk_wdma_info *info)
92 struct net_device_path_stack stack;
93 struct net_device_path *path;
99 if (!IS_ENABLED(CONFIG_NET_MEDIATEK_SOC_WED))
102 err = dev_fill_forward_path(dev, addr, &stack);
106 path = &stack.path[stack.num_paths - 1];
107 if (path->type != DEV_PATH_MTK_WDMA)
110 info->wdma_idx = path->mtk_wdma.wdma_idx;
111 info->queue = path->mtk_wdma.queue;
112 info->bss = path->mtk_wdma.bss;
113 info->wcid = path->mtk_wdma.wcid;
114 info->amsdu = path->mtk_wdma.amsdu;
121 mtk_flow_mangle_ports(const struct flow_action_entry *act,
122 struct mtk_flow_data *data)
124 u32 val = ntohl(act->mangle.val);
126 switch (act->mangle.offset) {
128 if (act->mangle.mask == ~htonl(0xffff))
129 data->dst_port = cpu_to_be16(val);
131 data->src_port = cpu_to_be16(val >> 16);
134 data->dst_port = cpu_to_be16(val);
144 mtk_flow_mangle_ipv4(const struct flow_action_entry *act,
145 struct mtk_flow_data *data)
149 switch (act->mangle.offset) {
150 case offsetof(struct iphdr, saddr):
151 dest = &data->v4.src_addr;
153 case offsetof(struct iphdr, daddr):
154 dest = &data->v4.dst_addr;
160 memcpy(dest, &act->mangle.val, sizeof(u32));
166 mtk_flow_get_dsa_port(struct net_device **dev)
168 #if IS_ENABLED(CONFIG_NET_DSA)
171 dp = dsa_port_from_netdev(*dev);
175 if (dp->cpu_dp->tag_ops->proto != DSA_TAG_PROTO_MTK)
178 *dev = dsa_port_to_conduit(dp);
187 mtk_flow_set_output_device(struct mtk_eth *eth, struct mtk_foe_entry *foe,
188 struct net_device *dev, const u8 *dest_mac,
191 struct mtk_wdma_info info = {};
192 int pse_port, dsa_port, queue;
194 if (mtk_flow_get_wdma_info(dev, dest_mac, &info) == 0) {
195 mtk_foe_entry_set_wdma(eth, foe, info.wdma_idx, info.queue,
196 info.bss, info.wcid, info.amsdu);
197 if (mtk_is_netsys_v2_or_greater(eth)) {
198 switch (info.wdma_idx) {
200 pse_port = PSE_WDMA0_PORT;
203 pse_port = PSE_WDMA1_PORT;
206 pse_port = PSE_WDMA2_PORT;
214 *wed_index = info.wdma_idx;
218 dsa_port = mtk_flow_get_dsa_port(&dev);
220 if (dev == eth->netdev[0])
221 pse_port = PSE_GDM1_PORT;
222 else if (dev == eth->netdev[1])
223 pse_port = PSE_GDM2_PORT;
224 else if (dev == eth->netdev[2])
225 pse_port = PSE_GDM3_PORT;
230 mtk_foe_entry_set_dsa(eth, foe, dsa_port);
231 queue = 3 + dsa_port;
233 queue = pse_port - 1;
235 mtk_foe_entry_set_queue(eth, foe, queue);
238 mtk_foe_entry_set_pse_port(eth, foe, pse_port);
244 mtk_flow_offload_replace(struct mtk_eth *eth, struct flow_cls_offload *f,
247 struct flow_rule *rule = flow_cls_offload_flow_rule(f);
248 struct flow_action_entry *act;
249 struct mtk_flow_data data = {};
250 struct mtk_foe_entry foe;
251 struct net_device *odev = NULL;
252 struct mtk_flow_entry *entry;
253 int offload_type = 0;
260 if (rhashtable_lookup(ð->flow_table, &f->cookie, mtk_flow_ht_params))
263 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_META)) {
264 struct flow_match_meta match;
266 flow_rule_match_meta(rule, &match);
271 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CONTROL)) {
272 struct flow_match_control match;
274 flow_rule_match_control(rule, &match);
275 addr_type = match.key->addr_type;
280 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC)) {
281 struct flow_match_basic match;
283 flow_rule_match_basic(rule, &match);
284 l4proto = match.key->ip_proto;
291 offload_type = MTK_PPE_PKT_TYPE_BRIDGE;
292 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ETH_ADDRS)) {
293 struct flow_match_eth_addrs match;
295 flow_rule_match_eth_addrs(rule, &match);
296 memcpy(data.eth.h_dest, match.key->dst, ETH_ALEN);
297 memcpy(data.eth.h_source, match.key->src, ETH_ALEN);
302 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_VLAN)) {
303 struct flow_match_vlan match;
305 flow_rule_match_vlan(rule, &match);
307 if (match.key->vlan_tpid != cpu_to_be16(ETH_P_8021Q))
310 data.vlan_in = match.key->vlan_id;
313 case FLOW_DISSECTOR_KEY_IPV4_ADDRS:
314 offload_type = MTK_PPE_PKT_TYPE_IPV4_HNAPT;
316 case FLOW_DISSECTOR_KEY_IPV6_ADDRS:
317 offload_type = MTK_PPE_PKT_TYPE_IPV6_ROUTE_5T;
323 flow_action_for_each(i, act, &rule->action) {
325 case FLOW_ACTION_MANGLE:
326 if (offload_type == MTK_PPE_PKT_TYPE_BRIDGE)
328 if (act->mangle.htype == FLOW_ACT_MANGLE_HDR_TYPE_ETH)
329 mtk_flow_offload_mangle_eth(act, &data.eth);
331 case FLOW_ACTION_REDIRECT:
334 case FLOW_ACTION_CSUM:
336 case FLOW_ACTION_VLAN_PUSH:
337 if (data.vlan.num == 1 ||
338 act->vlan.proto != htons(ETH_P_8021Q))
341 data.vlan.id = act->vlan.vid;
342 data.vlan.proto = act->vlan.proto;
345 case FLOW_ACTION_VLAN_POP:
347 case FLOW_ACTION_PPPOE_PUSH:
348 if (data.pppoe.num == 1)
351 data.pppoe.sid = act->pppoe.sid;
359 if (!is_valid_ether_addr(data.eth.h_source) ||
360 !is_valid_ether_addr(data.eth.h_dest))
363 err = mtk_foe_entry_prepare(eth, &foe, offload_type, l4proto, 0,
364 data.eth.h_source, data.eth.h_dest);
368 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_PORTS)) {
369 struct flow_match_ports ports;
371 if (offload_type == MTK_PPE_PKT_TYPE_BRIDGE)
374 flow_rule_match_ports(rule, &ports);
375 data.src_port = ports.key->src;
376 data.dst_port = ports.key->dst;
377 } else if (offload_type != MTK_PPE_PKT_TYPE_BRIDGE) {
381 if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
382 struct flow_match_ipv4_addrs addrs;
384 flow_rule_match_ipv4_addrs(rule, &addrs);
386 data.v4.src_addr = addrs.key->src;
387 data.v4.dst_addr = addrs.key->dst;
389 mtk_flow_set_ipv4_addr(eth, &foe, &data, false);
392 if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
393 struct flow_match_ipv6_addrs addrs;
395 flow_rule_match_ipv6_addrs(rule, &addrs);
397 data.v6.src_addr = addrs.key->src;
398 data.v6.dst_addr = addrs.key->dst;
400 mtk_flow_set_ipv6_addr(eth, &foe, &data);
403 flow_action_for_each(i, act, &rule->action) {
404 if (act->id != FLOW_ACTION_MANGLE)
407 if (offload_type == MTK_PPE_PKT_TYPE_BRIDGE)
410 switch (act->mangle.htype) {
411 case FLOW_ACT_MANGLE_HDR_TYPE_TCP:
412 case FLOW_ACT_MANGLE_HDR_TYPE_UDP:
413 err = mtk_flow_mangle_ports(act, &data);
415 case FLOW_ACT_MANGLE_HDR_TYPE_IP4:
416 err = mtk_flow_mangle_ipv4(act, &data);
418 case FLOW_ACT_MANGLE_HDR_TYPE_ETH:
419 /* handled earlier */
429 if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
430 err = mtk_flow_set_ipv4_addr(eth, &foe, &data, true);
435 if (offload_type == MTK_PPE_PKT_TYPE_BRIDGE)
436 foe.bridge.vlan = data.vlan_in;
438 if (data.vlan.num == 1) {
439 if (data.vlan.proto != htons(ETH_P_8021Q))
442 mtk_foe_entry_set_vlan(eth, &foe, data.vlan.id);
444 if (data.pppoe.num == 1)
445 mtk_foe_entry_set_pppoe(eth, &foe, data.pppoe.sid);
447 err = mtk_flow_set_output_device(eth, &foe, odev, data.eth.h_dest,
452 if (wed_index >= 0 && (err = mtk_wed_flow_add(wed_index)) < 0)
455 entry = kzalloc(sizeof(*entry), GFP_KERNEL);
459 entry->cookie = f->cookie;
460 memcpy(&entry->data, &foe, sizeof(entry->data));
461 entry->wed_index = wed_index;
462 entry->ppe_index = ppe_index;
464 err = mtk_foe_entry_commit(eth->ppe[entry->ppe_index], entry);
468 err = rhashtable_insert_fast(ð->flow_table, &entry->node,
476 mtk_foe_entry_clear(eth->ppe[entry->ppe_index], entry);
480 mtk_wed_flow_remove(wed_index);
485 mtk_flow_offload_destroy(struct mtk_eth *eth, struct flow_cls_offload *f)
487 struct mtk_flow_entry *entry;
489 entry = rhashtable_lookup(ð->flow_table, &f->cookie,
494 mtk_foe_entry_clear(eth->ppe[entry->ppe_index], entry);
495 rhashtable_remove_fast(ð->flow_table, &entry->node,
497 if (entry->wed_index >= 0)
498 mtk_wed_flow_remove(entry->wed_index);
505 mtk_flow_offload_stats(struct mtk_eth *eth, struct flow_cls_offload *f)
507 struct mtk_flow_entry *entry;
508 struct mtk_foe_accounting diff;
511 entry = rhashtable_lookup(ð->flow_table, &f->cookie,
516 idle = mtk_foe_entry_idle_time(eth->ppe[entry->ppe_index], entry);
517 f->stats.lastused = jiffies - idle * HZ;
519 if (entry->hash != 0xFFFF &&
520 mtk_foe_entry_get_mib(eth->ppe[entry->ppe_index], entry->hash,
522 f->stats.pkts += diff.packets;
523 f->stats.bytes += diff.bytes;
529 static DEFINE_MUTEX(mtk_flow_offload_mutex);
531 int mtk_flow_offload_cmd(struct mtk_eth *eth, struct flow_cls_offload *cls,
536 mutex_lock(&mtk_flow_offload_mutex);
537 switch (cls->command) {
538 case FLOW_CLS_REPLACE:
539 err = mtk_flow_offload_replace(eth, cls, ppe_index);
541 case FLOW_CLS_DESTROY:
542 err = mtk_flow_offload_destroy(eth, cls);
545 err = mtk_flow_offload_stats(eth, cls);
551 mutex_unlock(&mtk_flow_offload_mutex);
557 mtk_eth_setup_tc_block_cb(enum tc_setup_type type, void *type_data, void *cb_priv)
559 struct flow_cls_offload *cls = type_data;
560 struct net_device *dev = cb_priv;
564 mac = netdev_priv(dev);
567 if (!tc_can_offload(dev))
570 if (type != TC_SETUP_CLSFLOWER)
573 return mtk_flow_offload_cmd(eth, cls, 0);
577 mtk_eth_setup_tc_block(struct net_device *dev, struct flow_block_offload *f)
579 struct mtk_mac *mac = netdev_priv(dev);
580 struct mtk_eth *eth = mac->hw;
581 static LIST_HEAD(block_cb_list);
582 struct flow_block_cb *block_cb;
585 if (!eth->soc->offload_version)
588 if (f->binder_type != FLOW_BLOCK_BINDER_TYPE_CLSACT_INGRESS)
591 cb = mtk_eth_setup_tc_block_cb;
592 f->driver_block_list = &block_cb_list;
594 switch (f->command) {
595 case FLOW_BLOCK_BIND:
596 block_cb = flow_block_cb_lookup(f->block, cb, dev);
598 flow_block_cb_incref(block_cb);
601 block_cb = flow_block_cb_alloc(cb, dev, dev, NULL);
602 if (IS_ERR(block_cb))
603 return PTR_ERR(block_cb);
605 flow_block_cb_incref(block_cb);
606 flow_block_cb_add(block_cb, f);
607 list_add_tail(&block_cb->driver_list, &block_cb_list);
609 case FLOW_BLOCK_UNBIND:
610 block_cb = flow_block_cb_lookup(f->block, cb, dev);
614 if (!flow_block_cb_decref(block_cb)) {
615 flow_block_cb_remove(block_cb, f);
616 list_del(&block_cb->driver_list);
624 int mtk_eth_setup_tc(struct net_device *dev, enum tc_setup_type type,
630 return mtk_eth_setup_tc_block(dev, type_data);
636 int mtk_eth_offload_init(struct mtk_eth *eth)
638 return rhashtable_init(ð->flow_table, &mtk_flow_ht_params);