1 // SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
2 /* Copyright (c) 2017-2018 Mellanox Technologies. All rights reserved */
4 #include <net/ip_tunnels.h>
5 #include <net/ip6_tunnel.h>
6 #include <net/inet_ecn.h>
8 #include "spectrum_ipip.h"
12 mlxsw_sp_ipip_netdev_parms4(const struct net_device *ol_dev)
14 struct ip_tunnel *tun = netdev_priv(ol_dev);
20 mlxsw_sp_ipip_netdev_parms6(const struct net_device *ol_dev)
22 struct ip6_tnl *tun = netdev_priv(ol_dev);
27 static bool mlxsw_sp_ipip_parms4_has_ikey(const struct ip_tunnel_parm *parms)
29 return !!(parms->i_flags & TUNNEL_KEY);
32 static bool mlxsw_sp_ipip_parms6_has_ikey(const struct __ip6_tnl_parm *parms)
34 return !!(parms->i_flags & TUNNEL_KEY);
37 static bool mlxsw_sp_ipip_parms4_has_okey(const struct ip_tunnel_parm *parms)
39 return !!(parms->o_flags & TUNNEL_KEY);
42 static bool mlxsw_sp_ipip_parms6_has_okey(const struct __ip6_tnl_parm *parms)
44 return !!(parms->o_flags & TUNNEL_KEY);
47 static u32 mlxsw_sp_ipip_parms4_ikey(const struct ip_tunnel_parm *parms)
49 return mlxsw_sp_ipip_parms4_has_ikey(parms) ?
50 be32_to_cpu(parms->i_key) : 0;
53 static u32 mlxsw_sp_ipip_parms6_ikey(const struct __ip6_tnl_parm *parms)
55 return mlxsw_sp_ipip_parms6_has_ikey(parms) ?
56 be32_to_cpu(parms->i_key) : 0;
59 static u32 mlxsw_sp_ipip_parms4_okey(const struct ip_tunnel_parm *parms)
61 return mlxsw_sp_ipip_parms4_has_okey(parms) ?
62 be32_to_cpu(parms->o_key) : 0;
65 static u32 mlxsw_sp_ipip_parms6_okey(const struct __ip6_tnl_parm *parms)
67 return mlxsw_sp_ipip_parms6_has_okey(parms) ?
68 be32_to_cpu(parms->o_key) : 0;
71 static union mlxsw_sp_l3addr
72 mlxsw_sp_ipip_parms4_saddr(const struct ip_tunnel_parm *parms)
74 return (union mlxsw_sp_l3addr) { .addr4 = parms->iph.saddr };
77 static union mlxsw_sp_l3addr
78 mlxsw_sp_ipip_parms6_saddr(const struct __ip6_tnl_parm *parms)
80 return (union mlxsw_sp_l3addr) { .addr6 = parms->laddr };
83 static union mlxsw_sp_l3addr
84 mlxsw_sp_ipip_parms4_daddr(const struct ip_tunnel_parm *parms)
86 return (union mlxsw_sp_l3addr) { .addr4 = parms->iph.daddr };
89 static union mlxsw_sp_l3addr
90 mlxsw_sp_ipip_parms6_daddr(const struct __ip6_tnl_parm *parms)
92 return (union mlxsw_sp_l3addr) { .addr6 = parms->raddr };
96 mlxsw_sp_ipip_netdev_saddr(enum mlxsw_sp_l3proto proto,
97 const struct net_device *ol_dev)
99 struct ip_tunnel_parm parms4;
100 struct __ip6_tnl_parm parms6;
103 case MLXSW_SP_L3_PROTO_IPV4:
104 parms4 = mlxsw_sp_ipip_netdev_parms4(ol_dev);
105 return mlxsw_sp_ipip_parms4_saddr(&parms4);
106 case MLXSW_SP_L3_PROTO_IPV6:
107 parms6 = mlxsw_sp_ipip_netdev_parms6(ol_dev);
108 return mlxsw_sp_ipip_parms6_saddr(&parms6);
112 return (union mlxsw_sp_l3addr) {0};
115 static __be32 mlxsw_sp_ipip_netdev_daddr4(const struct net_device *ol_dev)
118 struct ip_tunnel_parm parms4 = mlxsw_sp_ipip_netdev_parms4(ol_dev);
120 return mlxsw_sp_ipip_parms4_daddr(&parms4).addr4;
123 static union mlxsw_sp_l3addr
124 mlxsw_sp_ipip_netdev_daddr(enum mlxsw_sp_l3proto proto,
125 const struct net_device *ol_dev)
127 struct ip_tunnel_parm parms4;
128 struct __ip6_tnl_parm parms6;
131 case MLXSW_SP_L3_PROTO_IPV4:
132 parms4 = mlxsw_sp_ipip_netdev_parms4(ol_dev);
133 return mlxsw_sp_ipip_parms4_daddr(&parms4);
134 case MLXSW_SP_L3_PROTO_IPV6:
135 parms6 = mlxsw_sp_ipip_netdev_parms6(ol_dev);
136 return mlxsw_sp_ipip_parms6_daddr(&parms6);
140 return (union mlxsw_sp_l3addr) {0};
143 bool mlxsw_sp_l3addr_is_zero(union mlxsw_sp_l3addr addr)
145 union mlxsw_sp_l3addr naddr = {0};
147 return !memcmp(&addr, &naddr, sizeof(naddr));
150 static struct mlxsw_sp_ipip_parms
151 mlxsw_sp_ipip_netdev_parms_init_gre4(const struct net_device *ol_dev)
153 struct ip_tunnel_parm parms = mlxsw_sp_ipip_netdev_parms4(ol_dev);
155 return (struct mlxsw_sp_ipip_parms) {
156 .proto = MLXSW_SP_L3_PROTO_IPV4,
157 .saddr = mlxsw_sp_ipip_parms4_saddr(&parms),
158 .daddr = mlxsw_sp_ipip_parms4_daddr(&parms),
160 .ikey = mlxsw_sp_ipip_parms4_ikey(&parms),
161 .okey = mlxsw_sp_ipip_parms4_okey(&parms),
166 mlxsw_sp_ipip_nexthop_update_gre4(struct mlxsw_sp *mlxsw_sp, u32 adj_index,
167 struct mlxsw_sp_ipip_entry *ipip_entry,
168 bool force, char *ratr_pl)
170 u16 rif_index = mlxsw_sp_ipip_lb_rif_index(ipip_entry->ol_lb);
171 __be32 daddr4 = mlxsw_sp_ipip_netdev_daddr4(ipip_entry->ol_dev);
172 enum mlxsw_reg_ratr_op op;
174 op = force ? MLXSW_REG_RATR_OP_WRITE_WRITE_ENTRY :
175 MLXSW_REG_RATR_OP_WRITE_WRITE_ENTRY_ON_ACTIVITY;
176 mlxsw_reg_ratr_pack(ratr_pl, op, true, MLXSW_REG_RATR_TYPE_IPIP,
177 adj_index, rif_index);
178 mlxsw_reg_ratr_ipip4_entry_pack(ratr_pl, be32_to_cpu(daddr4));
180 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ratr), ratr_pl);
184 mlxsw_sp_ipip_decap_config_gre4(struct mlxsw_sp *mlxsw_sp,
185 struct mlxsw_sp_ipip_entry *ipip_entry,
188 u16 rif_index = mlxsw_sp_ipip_lb_rif_index(ipip_entry->ol_lb);
189 u16 ul_rif_id = mlxsw_sp_ipip_lb_ul_rif_id(ipip_entry->ol_lb);
190 char rtdp_pl[MLXSW_REG_RTDP_LEN];
191 struct ip_tunnel_parm parms;
192 unsigned int type_check;
197 parms = mlxsw_sp_ipip_netdev_parms4(ipip_entry->ol_dev);
198 has_ikey = mlxsw_sp_ipip_parms4_has_ikey(&parms);
199 ikey = mlxsw_sp_ipip_parms4_ikey(&parms);
201 mlxsw_reg_rtdp_pack(rtdp_pl, MLXSW_REG_RTDP_TYPE_IPIP, tunnel_index);
202 mlxsw_reg_rtdp_egress_router_interface_set(rtdp_pl, ul_rif_id);
204 type_check = has_ikey ?
205 MLXSW_REG_RTDP_IPIP_TYPE_CHECK_ALLOW_GRE_KEY :
206 MLXSW_REG_RTDP_IPIP_TYPE_CHECK_ALLOW_GRE;
208 /* Linux demuxes tunnels based on packet SIP (which must match tunnel
209 * remote IP). Thus configure decap so that it filters out packets that
210 * are not IPv4 or have the wrong SIP. IPIP_DECAP_ERROR trap is
211 * generated for packets that fail this criterion. Linux then handles
212 * such packets in slow path and generates ICMP destination unreachable.
214 daddr4 = be32_to_cpu(mlxsw_sp_ipip_netdev_daddr4(ipip_entry->ol_dev));
215 mlxsw_reg_rtdp_ipip4_pack(rtdp_pl, rif_index,
216 MLXSW_REG_RTDP_IPIP_SIP_CHECK_FILTER_IPV4,
217 type_check, has_ikey, daddr4, ikey);
219 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rtdp), rtdp_pl);
222 static bool mlxsw_sp_ipip_tunnel_complete(enum mlxsw_sp_l3proto proto,
223 const struct net_device *ol_dev)
225 union mlxsw_sp_l3addr saddr = mlxsw_sp_ipip_netdev_saddr(proto, ol_dev);
226 union mlxsw_sp_l3addr daddr = mlxsw_sp_ipip_netdev_daddr(proto, ol_dev);
228 /* Tunnels with unset local or remote address are valid in Linux and
229 * used for lightweight tunnels (LWT) and Non-Broadcast Multi-Access
230 * (NBMA) tunnels. In principle these can be offloaded, but the driver
231 * currently doesn't support this. So punt.
233 return !mlxsw_sp_l3addr_is_zero(saddr) &&
234 !mlxsw_sp_l3addr_is_zero(daddr);
237 static bool mlxsw_sp_ipip_can_offload_gre4(const struct mlxsw_sp *mlxsw_sp,
238 const struct net_device *ol_dev)
240 struct ip_tunnel *tunnel = netdev_priv(ol_dev);
241 __be16 okflags = TUNNEL_KEY; /* We can't offload any other features. */
242 bool inherit_ttl = tunnel->parms.iph.ttl == 0;
243 bool inherit_tos = tunnel->parms.iph.tos & 0x1;
245 return (tunnel->parms.i_flags & ~okflags) == 0 &&
246 (tunnel->parms.o_flags & ~okflags) == 0 &&
247 inherit_ttl && inherit_tos &&
248 mlxsw_sp_ipip_tunnel_complete(MLXSW_SP_L3_PROTO_IPV4, ol_dev);
251 static struct mlxsw_sp_rif_ipip_lb_config
252 mlxsw_sp_ipip_ol_loopback_config_gre4(struct mlxsw_sp *mlxsw_sp,
253 const struct net_device *ol_dev)
255 struct ip_tunnel_parm parms = mlxsw_sp_ipip_netdev_parms4(ol_dev);
256 enum mlxsw_reg_ritr_loopback_ipip_type lb_ipipt;
258 lb_ipipt = mlxsw_sp_ipip_parms4_has_okey(&parms) ?
259 MLXSW_REG_RITR_LOOPBACK_IPIP_TYPE_IP_IN_GRE_KEY_IN_IP :
260 MLXSW_REG_RITR_LOOPBACK_IPIP_TYPE_IP_IN_GRE_IN_IP;
261 return (struct mlxsw_sp_rif_ipip_lb_config){
262 .lb_ipipt = lb_ipipt,
263 .okey = mlxsw_sp_ipip_parms4_okey(&parms),
264 .ul_protocol = MLXSW_SP_L3_PROTO_IPV4,
265 .saddr = mlxsw_sp_ipip_netdev_saddr(MLXSW_SP_L3_PROTO_IPV4,
271 mlxsw_sp_ipip_ol_netdev_change_gre(struct mlxsw_sp *mlxsw_sp,
272 struct mlxsw_sp_ipip_entry *ipip_entry,
273 const struct mlxsw_sp_ipip_parms *new_parms,
274 struct netlink_ext_ack *extack)
276 const struct mlxsw_sp_ipip_parms *old_parms = &ipip_entry->parms;
277 bool update_tunnel = false;
278 bool update_decap = false;
279 bool update_nhs = false;
282 if (!mlxsw_sp_l3addr_eq(&new_parms->saddr, &old_parms->saddr)) {
283 u16 ul_tb_id = mlxsw_sp_ipip_dev_ul_tb_id(ipip_entry->ol_dev);
285 /* Since the local address has changed, if there is another
286 * tunnel with a matching saddr, both need to be demoted.
288 if (mlxsw_sp_ipip_demote_tunnel_by_saddr(mlxsw_sp,
293 mlxsw_sp_ipip_entry_demote_tunnel(mlxsw_sp, ipip_entry);
297 update_tunnel = true;
298 } else if (old_parms->okey != new_parms->okey ||
299 old_parms->link != new_parms->link) {
300 update_tunnel = true;
301 } else if (!mlxsw_sp_l3addr_eq(&new_parms->daddr, &old_parms->daddr)) {
303 } else if (old_parms->ikey != new_parms->ikey) {
308 err = __mlxsw_sp_ipip_entry_update_tunnel(mlxsw_sp, ipip_entry,
312 err = __mlxsw_sp_ipip_entry_update_tunnel(mlxsw_sp, ipip_entry,
315 else if (update_decap)
316 err = __mlxsw_sp_ipip_entry_update_tunnel(mlxsw_sp, ipip_entry,
322 ipip_entry->parms = *new_parms;
327 mlxsw_sp_ipip_ol_netdev_change_gre4(struct mlxsw_sp *mlxsw_sp,
328 struct mlxsw_sp_ipip_entry *ipip_entry,
329 struct netlink_ext_ack *extack)
331 struct mlxsw_sp_ipip_parms new_parms;
333 new_parms = mlxsw_sp_ipip_netdev_parms_init_gre4(ipip_entry->ol_dev);
334 return mlxsw_sp_ipip_ol_netdev_change_gre(mlxsw_sp, ipip_entry,
339 mlxsw_sp_ipip_rem_addr_set_gre4(struct mlxsw_sp *mlxsw_sp,
340 struct mlxsw_sp_ipip_entry *ipip_entry)
346 mlxsw_sp_ipip_rem_addr_unset_gre4(struct mlxsw_sp *mlxsw_sp,
347 const struct mlxsw_sp_ipip_entry *ipip_entry)
351 static const struct mlxsw_sp_ipip_ops mlxsw_sp_ipip_gre4_ops = {
352 .dev_type = ARPHRD_IPGRE,
353 .ul_proto = MLXSW_SP_L3_PROTO_IPV4,
354 .inc_parsing_depth = false,
355 .parms_init = mlxsw_sp_ipip_netdev_parms_init_gre4,
356 .nexthop_update = mlxsw_sp_ipip_nexthop_update_gre4,
357 .decap_config = mlxsw_sp_ipip_decap_config_gre4,
358 .can_offload = mlxsw_sp_ipip_can_offload_gre4,
359 .ol_loopback_config = mlxsw_sp_ipip_ol_loopback_config_gre4,
360 .ol_netdev_change = mlxsw_sp_ipip_ol_netdev_change_gre4,
361 .rem_ip_addr_set = mlxsw_sp_ipip_rem_addr_set_gre4,
362 .rem_ip_addr_unset = mlxsw_sp_ipip_rem_addr_unset_gre4,
365 static struct mlxsw_sp_ipip_parms
366 mlxsw_sp_ipip_netdev_parms_init_gre6(const struct net_device *ol_dev)
368 struct __ip6_tnl_parm parms = mlxsw_sp_ipip_netdev_parms6(ol_dev);
370 return (struct mlxsw_sp_ipip_parms) {
371 .proto = MLXSW_SP_L3_PROTO_IPV6,
372 .saddr = mlxsw_sp_ipip_parms6_saddr(&parms),
373 .daddr = mlxsw_sp_ipip_parms6_daddr(&parms),
375 .ikey = mlxsw_sp_ipip_parms6_ikey(&parms),
376 .okey = mlxsw_sp_ipip_parms6_okey(&parms),
381 mlxsw_sp_ipip_nexthop_update_gre6(struct mlxsw_sp *mlxsw_sp, u32 adj_index,
382 struct mlxsw_sp_ipip_entry *ipip_entry,
383 bool force, char *ratr_pl)
385 u16 rif_index = mlxsw_sp_ipip_lb_rif_index(ipip_entry->ol_lb);
386 enum mlxsw_reg_ratr_op op;
388 op = force ? MLXSW_REG_RATR_OP_WRITE_WRITE_ENTRY :
389 MLXSW_REG_RATR_OP_WRITE_WRITE_ENTRY_ON_ACTIVITY;
390 mlxsw_reg_ratr_pack(ratr_pl, op, true, MLXSW_REG_RATR_TYPE_IPIP,
391 adj_index, rif_index);
392 mlxsw_reg_ratr_ipip6_entry_pack(ratr_pl,
393 ipip_entry->dip_kvdl_index);
395 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ratr), ratr_pl);
399 mlxsw_sp_ipip_decap_config_gre6(struct mlxsw_sp *mlxsw_sp,
400 struct mlxsw_sp_ipip_entry *ipip_entry,
403 u16 rif_index = mlxsw_sp_ipip_lb_rif_index(ipip_entry->ol_lb);
404 u16 ul_rif_id = mlxsw_sp_ipip_lb_ul_rif_id(ipip_entry->ol_lb);
405 char rtdp_pl[MLXSW_REG_RTDP_LEN];
406 struct __ip6_tnl_parm parms;
407 unsigned int type_check;
411 parms = mlxsw_sp_ipip_netdev_parms6(ipip_entry->ol_dev);
412 has_ikey = mlxsw_sp_ipip_parms6_has_ikey(&parms);
413 ikey = mlxsw_sp_ipip_parms6_ikey(&parms);
415 mlxsw_reg_rtdp_pack(rtdp_pl, MLXSW_REG_RTDP_TYPE_IPIP, tunnel_index);
416 mlxsw_reg_rtdp_egress_router_interface_set(rtdp_pl, ul_rif_id);
418 type_check = has_ikey ?
419 MLXSW_REG_RTDP_IPIP_TYPE_CHECK_ALLOW_GRE_KEY :
420 MLXSW_REG_RTDP_IPIP_TYPE_CHECK_ALLOW_GRE;
422 /* Linux demuxes tunnels based on packet SIP (which must match tunnel
423 * remote IP). Thus configure decap so that it filters out packets that
424 * are not IPv6 or have the wrong SIP. IPIP_DECAP_ERROR trap is
425 * generated for packets that fail this criterion. Linux then handles
426 * such packets in slow path and generates ICMP destination unreachable.
428 mlxsw_reg_rtdp_ipip6_pack(rtdp_pl, rif_index,
429 MLXSW_REG_RTDP_IPIP_SIP_CHECK_FILTER_IPV6,
430 type_check, has_ikey,
431 ipip_entry->dip_kvdl_index, ikey);
433 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rtdp), rtdp_pl);
436 static bool mlxsw_sp_ipip_can_offload_gre6(const struct mlxsw_sp *mlxsw_sp,
437 const struct net_device *ol_dev)
439 struct __ip6_tnl_parm tparm = mlxsw_sp_ipip_netdev_parms6(ol_dev);
440 bool inherit_tos = tparm.flags & IP6_TNL_F_USE_ORIG_TCLASS;
441 bool inherit_ttl = tparm.hop_limit == 0;
442 __be16 okflags = TUNNEL_KEY; /* We can't offload any other features. */
444 return (tparm.i_flags & ~okflags) == 0 &&
445 (tparm.o_flags & ~okflags) == 0 &&
446 inherit_ttl && inherit_tos &&
447 mlxsw_sp_ipip_tunnel_complete(MLXSW_SP_L3_PROTO_IPV6, ol_dev);
450 static struct mlxsw_sp_rif_ipip_lb_config
451 mlxsw_sp_ipip_ol_loopback_config_gre6(struct mlxsw_sp *mlxsw_sp,
452 const struct net_device *ol_dev)
454 struct __ip6_tnl_parm parms = mlxsw_sp_ipip_netdev_parms6(ol_dev);
455 enum mlxsw_reg_ritr_loopback_ipip_type lb_ipipt;
457 lb_ipipt = mlxsw_sp_ipip_parms6_has_okey(&parms) ?
458 MLXSW_REG_RITR_LOOPBACK_IPIP_TYPE_IP_IN_GRE_KEY_IN_IP :
459 MLXSW_REG_RITR_LOOPBACK_IPIP_TYPE_IP_IN_GRE_IN_IP;
460 return (struct mlxsw_sp_rif_ipip_lb_config){
461 .lb_ipipt = lb_ipipt,
462 .okey = mlxsw_sp_ipip_parms6_okey(&parms),
463 .ul_protocol = MLXSW_SP_L3_PROTO_IPV6,
464 .saddr = mlxsw_sp_ipip_netdev_saddr(MLXSW_SP_L3_PROTO_IPV6,
470 mlxsw_sp_ipip_ol_netdev_change_gre6(struct mlxsw_sp *mlxsw_sp,
471 struct mlxsw_sp_ipip_entry *ipip_entry,
472 struct netlink_ext_ack *extack)
474 struct mlxsw_sp_ipip_parms new_parms;
476 new_parms = mlxsw_sp_ipip_netdev_parms_init_gre6(ipip_entry->ol_dev);
477 return mlxsw_sp_ipip_ol_netdev_change_gre(mlxsw_sp, ipip_entry,
482 mlxsw_sp_ipip_rem_addr_set_gre6(struct mlxsw_sp *mlxsw_sp,
483 struct mlxsw_sp_ipip_entry *ipip_entry)
485 return mlxsw_sp_ipv6_addr_kvdl_index_get(mlxsw_sp,
486 &ipip_entry->parms.daddr.addr6,
487 &ipip_entry->dip_kvdl_index);
491 mlxsw_sp_ipip_rem_addr_unset_gre6(struct mlxsw_sp *mlxsw_sp,
492 const struct mlxsw_sp_ipip_entry *ipip_entry)
494 mlxsw_sp_ipv6_addr_put(mlxsw_sp, &ipip_entry->parms.daddr.addr6);
497 static const struct mlxsw_sp_ipip_ops mlxsw_sp1_ipip_gre6_ops = {
498 .dev_type = ARPHRD_IP6GRE,
499 .ul_proto = MLXSW_SP_L3_PROTO_IPV6,
500 .inc_parsing_depth = true,
501 .double_rif_entry = true,
502 .parms_init = mlxsw_sp_ipip_netdev_parms_init_gre6,
503 .nexthop_update = mlxsw_sp_ipip_nexthop_update_gre6,
504 .decap_config = mlxsw_sp_ipip_decap_config_gre6,
505 .can_offload = mlxsw_sp_ipip_can_offload_gre6,
506 .ol_loopback_config = mlxsw_sp_ipip_ol_loopback_config_gre6,
507 .ol_netdev_change = mlxsw_sp_ipip_ol_netdev_change_gre6,
508 .rem_ip_addr_set = mlxsw_sp_ipip_rem_addr_set_gre6,
509 .rem_ip_addr_unset = mlxsw_sp_ipip_rem_addr_unset_gre6,
512 const struct mlxsw_sp_ipip_ops *mlxsw_sp1_ipip_ops_arr[] = {
513 [MLXSW_SP_IPIP_TYPE_GRE4] = &mlxsw_sp_ipip_gre4_ops,
514 [MLXSW_SP_IPIP_TYPE_GRE6] = &mlxsw_sp1_ipip_gre6_ops,
517 static const struct mlxsw_sp_ipip_ops mlxsw_sp2_ipip_gre6_ops = {
518 .dev_type = ARPHRD_IP6GRE,
519 .ul_proto = MLXSW_SP_L3_PROTO_IPV6,
520 .inc_parsing_depth = true,
521 .parms_init = mlxsw_sp_ipip_netdev_parms_init_gre6,
522 .nexthop_update = mlxsw_sp_ipip_nexthop_update_gre6,
523 .decap_config = mlxsw_sp_ipip_decap_config_gre6,
524 .can_offload = mlxsw_sp_ipip_can_offload_gre6,
525 .ol_loopback_config = mlxsw_sp_ipip_ol_loopback_config_gre6,
526 .ol_netdev_change = mlxsw_sp_ipip_ol_netdev_change_gre6,
527 .rem_ip_addr_set = mlxsw_sp_ipip_rem_addr_set_gre6,
528 .rem_ip_addr_unset = mlxsw_sp_ipip_rem_addr_unset_gre6,
531 const struct mlxsw_sp_ipip_ops *mlxsw_sp2_ipip_ops_arr[] = {
532 [MLXSW_SP_IPIP_TYPE_GRE4] = &mlxsw_sp_ipip_gre4_ops,
533 [MLXSW_SP_IPIP_TYPE_GRE6] = &mlxsw_sp2_ipip_gre6_ops,
536 static int mlxsw_sp_ipip_ecn_encap_init_one(struct mlxsw_sp *mlxsw_sp,
537 u8 inner_ecn, u8 outer_ecn)
539 char tieem_pl[MLXSW_REG_TIEEM_LEN];
541 mlxsw_reg_tieem_pack(tieem_pl, inner_ecn, outer_ecn);
542 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(tieem), tieem_pl);
545 int mlxsw_sp_ipip_ecn_encap_init(struct mlxsw_sp *mlxsw_sp)
549 /* Iterate over inner ECN values */
550 for (i = INET_ECN_NOT_ECT; i <= INET_ECN_CE; i++) {
551 u8 outer_ecn = INET_ECN_encapsulate(0, i);
554 err = mlxsw_sp_ipip_ecn_encap_init_one(mlxsw_sp, i, outer_ecn);
562 static int mlxsw_sp_ipip_ecn_decap_init_one(struct mlxsw_sp *mlxsw_sp,
563 u8 inner_ecn, u8 outer_ecn)
565 char tidem_pl[MLXSW_REG_TIDEM_LEN];
569 new_inner_ecn = mlxsw_sp_tunnel_ecn_decap(outer_ecn, inner_ecn,
571 mlxsw_reg_tidem_pack(tidem_pl, outer_ecn, inner_ecn, new_inner_ecn,
572 trap_en, trap_en ? MLXSW_TRAP_ID_DECAP_ECN0 : 0);
573 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(tidem), tidem_pl);
576 int mlxsw_sp_ipip_ecn_decap_init(struct mlxsw_sp *mlxsw_sp)
580 /* Iterate over inner ECN values */
581 for (i = INET_ECN_NOT_ECT; i <= INET_ECN_CE; i++) {
582 /* Iterate over outer ECN values */
583 for (j = INET_ECN_NOT_ECT; j <= INET_ECN_CE; j++) {
584 err = mlxsw_sp_ipip_ecn_decap_init_one(mlxsw_sp, i, j);
594 mlxsw_sp_ipip_netdev_ul_dev_get(const struct net_device *ol_dev)
596 struct net *net = dev_net(ol_dev);
597 struct ip_tunnel *tun4;
598 struct ip6_tnl *tun6;
600 switch (ol_dev->type) {
602 tun4 = netdev_priv(ol_dev);
603 return dev_get_by_index_rcu(net, tun4->parms.link);
605 tun6 = netdev_priv(ol_dev);
606 return dev_get_by_index_rcu(net, tun6->parms.link);