1
2
3
4#include <net/ip_tunnels.h>
5#include <net/ip6_tunnel.h>
6#include <net/inet_ecn.h>
7
8#include "spectrum_ipip.h"
9#include "reg.h"
10
11struct ip_tunnel_parm
12mlxsw_sp_ipip_netdev_parms4(const struct net_device *ol_dev)
13{
14 struct ip_tunnel *tun = netdev_priv(ol_dev);
15
16 return tun->parms;
17}
18
19struct __ip6_tnl_parm
20mlxsw_sp_ipip_netdev_parms6(const struct net_device *ol_dev)
21{
22 struct ip6_tnl *tun = netdev_priv(ol_dev);
23
24 return tun->parms;
25}
26
27static bool mlxsw_sp_ipip_parms4_has_ikey(const struct ip_tunnel_parm *parms)
28{
29 return !!(parms->i_flags & TUNNEL_KEY);
30}
31
32static bool mlxsw_sp_ipip_parms6_has_ikey(const struct __ip6_tnl_parm *parms)
33{
34 return !!(parms->i_flags & TUNNEL_KEY);
35}
36
37static bool mlxsw_sp_ipip_parms4_has_okey(const struct ip_tunnel_parm *parms)
38{
39 return !!(parms->o_flags & TUNNEL_KEY);
40}
41
42static bool mlxsw_sp_ipip_parms6_has_okey(const struct __ip6_tnl_parm *parms)
43{
44 return !!(parms->o_flags & TUNNEL_KEY);
45}
46
47static u32 mlxsw_sp_ipip_parms4_ikey(const struct ip_tunnel_parm *parms)
48{
49 return mlxsw_sp_ipip_parms4_has_ikey(parms) ?
50 be32_to_cpu(parms->i_key) : 0;
51}
52
53static u32 mlxsw_sp_ipip_parms6_ikey(const struct __ip6_tnl_parm *parms)
54{
55 return mlxsw_sp_ipip_parms6_has_ikey(parms) ?
56 be32_to_cpu(parms->i_key) : 0;
57}
58
59static u32 mlxsw_sp_ipip_parms4_okey(const struct ip_tunnel_parm *parms)
60{
61 return mlxsw_sp_ipip_parms4_has_okey(parms) ?
62 be32_to_cpu(parms->o_key) : 0;
63}
64
65static u32 mlxsw_sp_ipip_parms6_okey(const struct __ip6_tnl_parm *parms)
66{
67 return mlxsw_sp_ipip_parms6_has_okey(parms) ?
68 be32_to_cpu(parms->o_key) : 0;
69}
70
71static union mlxsw_sp_l3addr
72mlxsw_sp_ipip_parms4_saddr(const struct ip_tunnel_parm *parms)
73{
74 return (union mlxsw_sp_l3addr) { .addr4 = parms->iph.saddr };
75}
76
77static union mlxsw_sp_l3addr
78mlxsw_sp_ipip_parms6_saddr(const struct __ip6_tnl_parm *parms)
79{
80 return (union mlxsw_sp_l3addr) { .addr6 = parms->laddr };
81}
82
83static union mlxsw_sp_l3addr
84mlxsw_sp_ipip_parms4_daddr(const struct ip_tunnel_parm *parms)
85{
86 return (union mlxsw_sp_l3addr) { .addr4 = parms->iph.daddr };
87}
88
89static union mlxsw_sp_l3addr
90mlxsw_sp_ipip_parms6_daddr(const struct __ip6_tnl_parm *parms)
91{
92 return (union mlxsw_sp_l3addr) { .addr6 = parms->raddr };
93}
94
95union mlxsw_sp_l3addr
96mlxsw_sp_ipip_netdev_saddr(enum mlxsw_sp_l3proto proto,
97 const struct net_device *ol_dev)
98{
99 struct ip_tunnel_parm parms4;
100 struct __ip6_tnl_parm parms6;
101
102 switch (proto) {
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);
109 }
110
111 WARN_ON(1);
112 return (union mlxsw_sp_l3addr) {0};
113}
114
115static __be32 mlxsw_sp_ipip_netdev_daddr4(const struct net_device *ol_dev)
116{
117
118 struct ip_tunnel_parm parms4 = mlxsw_sp_ipip_netdev_parms4(ol_dev);
119
120 return mlxsw_sp_ipip_parms4_daddr(&parms4).addr4;
121}
122
123static union mlxsw_sp_l3addr
124mlxsw_sp_ipip_netdev_daddr(enum mlxsw_sp_l3proto proto,
125 const struct net_device *ol_dev)
126{
127 struct ip_tunnel_parm parms4;
128 struct __ip6_tnl_parm parms6;
129
130 switch (proto) {
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);
137 }
138
139 WARN_ON(1);
140 return (union mlxsw_sp_l3addr) {0};
141}
142
143bool mlxsw_sp_l3addr_is_zero(union mlxsw_sp_l3addr addr)
144{
145 union mlxsw_sp_l3addr naddr = {0};
146
147 return !memcmp(&addr, &naddr, sizeof(naddr));
148}
149
150static struct mlxsw_sp_ipip_parms
151mlxsw_sp_ipip_netdev_parms_init_gre4(const struct net_device *ol_dev)
152{
153 struct ip_tunnel_parm parms = mlxsw_sp_ipip_netdev_parms4(ol_dev);
154
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),
159 .link = parms.link,
160 .ikey = mlxsw_sp_ipip_parms4_ikey(&parms),
161 .okey = mlxsw_sp_ipip_parms4_okey(&parms),
162 };
163}
164
165static int
166mlxsw_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)
169{
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;
173
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));
179
180 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ratr), ratr_pl);
181}
182
183static int
184mlxsw_sp_ipip_decap_config_gre4(struct mlxsw_sp *mlxsw_sp,
185 struct mlxsw_sp_ipip_entry *ipip_entry,
186 u32 tunnel_index)
187{
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;
193 bool has_ikey;
194 u32 daddr4;
195 u32 ikey;
196
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);
200
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);
203
204 type_check = has_ikey ?
205 MLXSW_REG_RTDP_IPIP_TYPE_CHECK_ALLOW_GRE_KEY :
206 MLXSW_REG_RTDP_IPIP_TYPE_CHECK_ALLOW_GRE;
207
208
209
210
211
212
213
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);
218
219 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rtdp), rtdp_pl);
220}
221
222static bool mlxsw_sp_ipip_tunnel_complete(enum mlxsw_sp_l3proto proto,
223 const struct net_device *ol_dev)
224{
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);
227
228
229
230
231
232
233 return !mlxsw_sp_l3addr_is_zero(saddr) &&
234 !mlxsw_sp_l3addr_is_zero(daddr);
235}
236
237static bool mlxsw_sp_ipip_can_offload_gre4(const struct mlxsw_sp *mlxsw_sp,
238 const struct net_device *ol_dev)
239{
240 struct ip_tunnel *tunnel = netdev_priv(ol_dev);
241 __be16 okflags = TUNNEL_KEY;
242 bool inherit_ttl = tunnel->parms.iph.ttl == 0;
243 bool inherit_tos = tunnel->parms.iph.tos & 0x1;
244
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);
249}
250
251static struct mlxsw_sp_rif_ipip_lb_config
252mlxsw_sp_ipip_ol_loopback_config_gre4(struct mlxsw_sp *mlxsw_sp,
253 const struct net_device *ol_dev)
254{
255 struct ip_tunnel_parm parms = mlxsw_sp_ipip_netdev_parms4(ol_dev);
256 enum mlxsw_reg_ritr_loopback_ipip_type lb_ipipt;
257
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,
266 ol_dev),
267 };
268}
269
270static int
271mlxsw_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)
275{
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;
280 int err = 0;
281
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);
284
285
286
287
288 if (mlxsw_sp_ipip_demote_tunnel_by_saddr(mlxsw_sp,
289 new_parms->proto,
290 new_parms->saddr,
291 ul_tb_id,
292 ipip_entry)) {
293 mlxsw_sp_ipip_entry_demote_tunnel(mlxsw_sp, ipip_entry);
294 return 0;
295 }
296
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)) {
302 update_nhs = true;
303 } else if (old_parms->ikey != new_parms->ikey) {
304 update_decap = true;
305 }
306
307 if (update_tunnel)
308 err = __mlxsw_sp_ipip_entry_update_tunnel(mlxsw_sp, ipip_entry,
309 true, true, true,
310 extack);
311 else if (update_nhs)
312 err = __mlxsw_sp_ipip_entry_update_tunnel(mlxsw_sp, ipip_entry,
313 false, false, true,
314 extack);
315 else if (update_decap)
316 err = __mlxsw_sp_ipip_entry_update_tunnel(mlxsw_sp, ipip_entry,
317 false, false, false,
318 extack);
319 if (err)
320 return err;
321
322 ipip_entry->parms = *new_parms;
323 return 0;
324}
325
326static int
327mlxsw_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)
330{
331 struct mlxsw_sp_ipip_parms new_parms;
332
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,
335 &new_parms, extack);
336}
337
338static int
339mlxsw_sp_ipip_rem_addr_set_gre4(struct mlxsw_sp *mlxsw_sp,
340 struct mlxsw_sp_ipip_entry *ipip_entry)
341{
342 return 0;
343}
344
345static void
346mlxsw_sp_ipip_rem_addr_unset_gre4(struct mlxsw_sp *mlxsw_sp,
347 const struct mlxsw_sp_ipip_entry *ipip_entry)
348{
349}
350
351static 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,
363};
364
365static struct mlxsw_sp_ipip_parms
366mlxsw_sp1_ipip_netdev_parms_init_gre6(const struct net_device *ol_dev)
367{
368 struct mlxsw_sp_ipip_parms parms = {0};
369
370 WARN_ON_ONCE(1);
371 return parms;
372}
373
374static int
375mlxsw_sp1_ipip_nexthop_update_gre6(struct mlxsw_sp *mlxsw_sp, u32 adj_index,
376 struct mlxsw_sp_ipip_entry *ipip_entry,
377 bool force, char *ratr_pl)
378{
379 WARN_ON_ONCE(1);
380 return -EINVAL;
381}
382
383static int
384mlxsw_sp1_ipip_decap_config_gre6(struct mlxsw_sp *mlxsw_sp,
385 struct mlxsw_sp_ipip_entry *ipip_entry,
386 u32 tunnel_index)
387{
388 WARN_ON_ONCE(1);
389 return -EINVAL;
390}
391
392static bool mlxsw_sp1_ipip_can_offload_gre6(const struct mlxsw_sp *mlxsw_sp,
393 const struct net_device *ol_dev)
394{
395 return false;
396}
397
398static struct mlxsw_sp_rif_ipip_lb_config
399mlxsw_sp1_ipip_ol_loopback_config_gre6(struct mlxsw_sp *mlxsw_sp,
400 const struct net_device *ol_dev)
401{
402 struct mlxsw_sp_rif_ipip_lb_config config = {0};
403
404 WARN_ON_ONCE(1);
405 return config;
406}
407
408static int
409mlxsw_sp1_ipip_ol_netdev_change_gre6(struct mlxsw_sp *mlxsw_sp,
410 struct mlxsw_sp_ipip_entry *ipip_entry,
411 struct netlink_ext_ack *extack)
412{
413 WARN_ON_ONCE(1);
414 return -EINVAL;
415}
416
417static int
418mlxsw_sp1_ipip_rem_addr_set_gre6(struct mlxsw_sp *mlxsw_sp,
419 struct mlxsw_sp_ipip_entry *ipip_entry)
420{
421 WARN_ON_ONCE(1);
422 return -EINVAL;
423}
424
425static void
426mlxsw_sp1_ipip_rem_addr_unset_gre6(struct mlxsw_sp *mlxsw_sp,
427 const struct mlxsw_sp_ipip_entry *ipip_entry)
428{
429 WARN_ON_ONCE(1);
430}
431
432static const struct mlxsw_sp_ipip_ops mlxsw_sp1_ipip_gre6_ops = {
433 .dev_type = ARPHRD_IP6GRE,
434 .ul_proto = MLXSW_SP_L3_PROTO_IPV6,
435 .inc_parsing_depth = true,
436 .parms_init = mlxsw_sp1_ipip_netdev_parms_init_gre6,
437 .nexthop_update = mlxsw_sp1_ipip_nexthop_update_gre6,
438 .decap_config = mlxsw_sp1_ipip_decap_config_gre6,
439 .can_offload = mlxsw_sp1_ipip_can_offload_gre6,
440 .ol_loopback_config = mlxsw_sp1_ipip_ol_loopback_config_gre6,
441 .ol_netdev_change = mlxsw_sp1_ipip_ol_netdev_change_gre6,
442 .rem_ip_addr_set = mlxsw_sp1_ipip_rem_addr_set_gre6,
443 .rem_ip_addr_unset = mlxsw_sp1_ipip_rem_addr_unset_gre6,
444};
445
446const struct mlxsw_sp_ipip_ops *mlxsw_sp1_ipip_ops_arr[] = {
447 [MLXSW_SP_IPIP_TYPE_GRE4] = &mlxsw_sp_ipip_gre4_ops,
448 [MLXSW_SP_IPIP_TYPE_GRE6] = &mlxsw_sp1_ipip_gre6_ops,
449};
450
451static struct mlxsw_sp_ipip_parms
452mlxsw_sp2_ipip_netdev_parms_init_gre6(const struct net_device *ol_dev)
453{
454 struct __ip6_tnl_parm parms = mlxsw_sp_ipip_netdev_parms6(ol_dev);
455
456 return (struct mlxsw_sp_ipip_parms) {
457 .proto = MLXSW_SP_L3_PROTO_IPV6,
458 .saddr = mlxsw_sp_ipip_parms6_saddr(&parms),
459 .daddr = mlxsw_sp_ipip_parms6_daddr(&parms),
460 .link = parms.link,
461 .ikey = mlxsw_sp_ipip_parms6_ikey(&parms),
462 .okey = mlxsw_sp_ipip_parms6_okey(&parms),
463 };
464}
465
466static int
467mlxsw_sp2_ipip_nexthop_update_gre6(struct mlxsw_sp *mlxsw_sp, u32 adj_index,
468 struct mlxsw_sp_ipip_entry *ipip_entry,
469 bool force, char *ratr_pl)
470{
471 u16 rif_index = mlxsw_sp_ipip_lb_rif_index(ipip_entry->ol_lb);
472 enum mlxsw_reg_ratr_op op;
473
474 op = force ? MLXSW_REG_RATR_OP_WRITE_WRITE_ENTRY :
475 MLXSW_REG_RATR_OP_WRITE_WRITE_ENTRY_ON_ACTIVITY;
476 mlxsw_reg_ratr_pack(ratr_pl, op, true, MLXSW_REG_RATR_TYPE_IPIP,
477 adj_index, rif_index);
478 mlxsw_reg_ratr_ipip6_entry_pack(ratr_pl,
479 ipip_entry->dip_kvdl_index);
480
481 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ratr), ratr_pl);
482}
483
484static int
485mlxsw_sp2_ipip_decap_config_gre6(struct mlxsw_sp *mlxsw_sp,
486 struct mlxsw_sp_ipip_entry *ipip_entry,
487 u32 tunnel_index)
488{
489 u16 rif_index = mlxsw_sp_ipip_lb_rif_index(ipip_entry->ol_lb);
490 u16 ul_rif_id = mlxsw_sp_ipip_lb_ul_rif_id(ipip_entry->ol_lb);
491 char rtdp_pl[MLXSW_REG_RTDP_LEN];
492 struct __ip6_tnl_parm parms;
493 unsigned int type_check;
494 bool has_ikey;
495 u32 ikey;
496
497 parms = mlxsw_sp_ipip_netdev_parms6(ipip_entry->ol_dev);
498 has_ikey = mlxsw_sp_ipip_parms6_has_ikey(&parms);
499 ikey = mlxsw_sp_ipip_parms6_ikey(&parms);
500
501 mlxsw_reg_rtdp_pack(rtdp_pl, MLXSW_REG_RTDP_TYPE_IPIP, tunnel_index);
502 mlxsw_reg_rtdp_egress_router_interface_set(rtdp_pl, ul_rif_id);
503
504 type_check = has_ikey ?
505 MLXSW_REG_RTDP_IPIP_TYPE_CHECK_ALLOW_GRE_KEY :
506 MLXSW_REG_RTDP_IPIP_TYPE_CHECK_ALLOW_GRE;
507
508
509
510
511
512
513
514 mlxsw_reg_rtdp_ipip6_pack(rtdp_pl, rif_index,
515 MLXSW_REG_RTDP_IPIP_SIP_CHECK_FILTER_IPV6,
516 type_check, has_ikey,
517 ipip_entry->dip_kvdl_index, ikey);
518
519 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rtdp), rtdp_pl);
520}
521
522static bool mlxsw_sp2_ipip_can_offload_gre6(const struct mlxsw_sp *mlxsw_sp,
523 const struct net_device *ol_dev)
524{
525 struct __ip6_tnl_parm tparm = mlxsw_sp_ipip_netdev_parms6(ol_dev);
526 bool inherit_tos = tparm.flags & IP6_TNL_F_USE_ORIG_TCLASS;
527 bool inherit_ttl = tparm.hop_limit == 0;
528 __be16 okflags = TUNNEL_KEY;
529
530 return (tparm.i_flags & ~okflags) == 0 &&
531 (tparm.o_flags & ~okflags) == 0 &&
532 inherit_ttl && inherit_tos &&
533 mlxsw_sp_ipip_tunnel_complete(MLXSW_SP_L3_PROTO_IPV6, ol_dev);
534}
535
536static struct mlxsw_sp_rif_ipip_lb_config
537mlxsw_sp2_ipip_ol_loopback_config_gre6(struct mlxsw_sp *mlxsw_sp,
538 const struct net_device *ol_dev)
539{
540 struct __ip6_tnl_parm parms = mlxsw_sp_ipip_netdev_parms6(ol_dev);
541 enum mlxsw_reg_ritr_loopback_ipip_type lb_ipipt;
542
543 lb_ipipt = mlxsw_sp_ipip_parms6_has_okey(&parms) ?
544 MLXSW_REG_RITR_LOOPBACK_IPIP_TYPE_IP_IN_GRE_KEY_IN_IP :
545 MLXSW_REG_RITR_LOOPBACK_IPIP_TYPE_IP_IN_GRE_IN_IP;
546 return (struct mlxsw_sp_rif_ipip_lb_config){
547 .lb_ipipt = lb_ipipt,
548 .okey = mlxsw_sp_ipip_parms6_okey(&parms),
549 .ul_protocol = MLXSW_SP_L3_PROTO_IPV6,
550 .saddr = mlxsw_sp_ipip_netdev_saddr(MLXSW_SP_L3_PROTO_IPV6,
551 ol_dev),
552 };
553}
554
555static int
556mlxsw_sp2_ipip_ol_netdev_change_gre6(struct mlxsw_sp *mlxsw_sp,
557 struct mlxsw_sp_ipip_entry *ipip_entry,
558 struct netlink_ext_ack *extack)
559{
560 struct mlxsw_sp_ipip_parms new_parms;
561
562 new_parms = mlxsw_sp2_ipip_netdev_parms_init_gre6(ipip_entry->ol_dev);
563 return mlxsw_sp_ipip_ol_netdev_change_gre(mlxsw_sp, ipip_entry,
564 &new_parms, extack);
565}
566
567static int
568mlxsw_sp2_ipip_rem_addr_set_gre6(struct mlxsw_sp *mlxsw_sp,
569 struct mlxsw_sp_ipip_entry *ipip_entry)
570{
571 char rips_pl[MLXSW_REG_RIPS_LEN];
572 struct __ip6_tnl_parm parms6;
573 int err;
574
575 err = mlxsw_sp_kvdl_alloc(mlxsw_sp,
576 MLXSW_SP_KVDL_ENTRY_TYPE_IPV6_ADDRESS, 1,
577 &ipip_entry->dip_kvdl_index);
578 if (err)
579 return err;
580
581 parms6 = mlxsw_sp_ipip_netdev_parms6(ipip_entry->ol_dev);
582 mlxsw_reg_rips_pack(rips_pl, ipip_entry->dip_kvdl_index,
583 &parms6.raddr);
584 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rips), rips_pl);
585 if (err)
586 goto err_rips_write;
587
588 return 0;
589
590err_rips_write:
591 mlxsw_sp_kvdl_free(mlxsw_sp, MLXSW_SP_KVDL_ENTRY_TYPE_IPV6_ADDRESS, 1,
592 ipip_entry->dip_kvdl_index);
593 return err;
594}
595
596static void
597mlxsw_sp2_ipip_rem_addr_unset_gre6(struct mlxsw_sp *mlxsw_sp,
598 const struct mlxsw_sp_ipip_entry *ipip_entry)
599{
600 mlxsw_sp_kvdl_free(mlxsw_sp, MLXSW_SP_KVDL_ENTRY_TYPE_IPV6_ADDRESS, 1,
601 ipip_entry->dip_kvdl_index);
602}
603
604static const struct mlxsw_sp_ipip_ops mlxsw_sp2_ipip_gre6_ops = {
605 .dev_type = ARPHRD_IP6GRE,
606 .ul_proto = MLXSW_SP_L3_PROTO_IPV6,
607 .inc_parsing_depth = true,
608 .parms_init = mlxsw_sp2_ipip_netdev_parms_init_gre6,
609 .nexthop_update = mlxsw_sp2_ipip_nexthop_update_gre6,
610 .decap_config = mlxsw_sp2_ipip_decap_config_gre6,
611 .can_offload = mlxsw_sp2_ipip_can_offload_gre6,
612 .ol_loopback_config = mlxsw_sp2_ipip_ol_loopback_config_gre6,
613 .ol_netdev_change = mlxsw_sp2_ipip_ol_netdev_change_gre6,
614 .rem_ip_addr_set = mlxsw_sp2_ipip_rem_addr_set_gre6,
615 .rem_ip_addr_unset = mlxsw_sp2_ipip_rem_addr_unset_gre6,
616};
617
618const struct mlxsw_sp_ipip_ops *mlxsw_sp2_ipip_ops_arr[] = {
619 [MLXSW_SP_IPIP_TYPE_GRE4] = &mlxsw_sp_ipip_gre4_ops,
620 [MLXSW_SP_IPIP_TYPE_GRE6] = &mlxsw_sp2_ipip_gre6_ops,
621};
622
623static int mlxsw_sp_ipip_ecn_encap_init_one(struct mlxsw_sp *mlxsw_sp,
624 u8 inner_ecn, u8 outer_ecn)
625{
626 char tieem_pl[MLXSW_REG_TIEEM_LEN];
627
628 mlxsw_reg_tieem_pack(tieem_pl, inner_ecn, outer_ecn);
629 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(tieem), tieem_pl);
630}
631
632int mlxsw_sp_ipip_ecn_encap_init(struct mlxsw_sp *mlxsw_sp)
633{
634 int i;
635
636
637 for (i = INET_ECN_NOT_ECT; i <= INET_ECN_CE; i++) {
638 u8 outer_ecn = INET_ECN_encapsulate(0, i);
639 int err;
640
641 err = mlxsw_sp_ipip_ecn_encap_init_one(mlxsw_sp, i, outer_ecn);
642 if (err)
643 return err;
644 }
645
646 return 0;
647}
648
649static int mlxsw_sp_ipip_ecn_decap_init_one(struct mlxsw_sp *mlxsw_sp,
650 u8 inner_ecn, u8 outer_ecn)
651{
652 char tidem_pl[MLXSW_REG_TIDEM_LEN];
653 u8 new_inner_ecn;
654 bool trap_en;
655
656 new_inner_ecn = mlxsw_sp_tunnel_ecn_decap(outer_ecn, inner_ecn,
657 &trap_en);
658 mlxsw_reg_tidem_pack(tidem_pl, outer_ecn, inner_ecn, new_inner_ecn,
659 trap_en, trap_en ? MLXSW_TRAP_ID_DECAP_ECN0 : 0);
660 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(tidem), tidem_pl);
661}
662
663int mlxsw_sp_ipip_ecn_decap_init(struct mlxsw_sp *mlxsw_sp)
664{
665 int i, j, err;
666
667
668 for (i = INET_ECN_NOT_ECT; i <= INET_ECN_CE; i++) {
669
670 for (j = INET_ECN_NOT_ECT; j <= INET_ECN_CE; j++) {
671 err = mlxsw_sp_ipip_ecn_decap_init_one(mlxsw_sp, i, j);
672 if (err)
673 return err;
674 }
675 }
676
677 return 0;
678}
679
680struct net_device *
681mlxsw_sp_ipip_netdev_ul_dev_get(const struct net_device *ol_dev)
682{
683 struct net *net = dev_net(ol_dev);
684 struct ip_tunnel *tun4;
685 struct ip6_tnl *tun6;
686
687 switch (ol_dev->type) {
688 case ARPHRD_IPGRE:
689 tun4 = netdev_priv(ol_dev);
690 return dev_get_by_index_rcu(net, tun4->parms.link);
691 case ARPHRD_IP6GRE:
692 tun6 = netdev_priv(ol_dev);
693 return dev_get_by_index_rcu(net, tun6->parms.link);
694 default:
695 return NULL;
696 }
697}
698
