2 * swconfig.c: Switch configuration API
4 * Copyright (C) 2008 Felix Fietkau <nbd@nbd.name>
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version 2
9 * of the License, or (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
17 #include <linux/types.h>
18 #include <linux/module.h>
19 #include <linux/init.h>
20 #include <linux/list.h>
22 #include <linux/if_ether.h>
23 #include <linux/capability.h>
24 #include <linux/skbuff.h>
25 #include <linux/switch.h>
27 #include <linux/version.h>
28 #include <uapi/linux/mii.h>
30 #define SWCONFIG_DEVNAME "switch%d"
32 #include "swconfig_leds.c"
34 MODULE_AUTHOR("Felix Fietkau <nbd@nbd.name>");
35 MODULE_LICENSE("GPL");
38 static struct list_head swdevs
;
39 static DEFINE_MUTEX(swdevs_lock
);
40 struct swconfig_callback
;
42 struct swconfig_callback
{
44 struct genlmsghdr
*hdr
;
45 struct genl_info
*info
;
48 /* callback for filling in the message data */
49 int (*fill
)(struct swconfig_callback
*cb
, void *arg
);
51 /* callback for closing the message before sending it */
52 int (*close
)(struct swconfig_callback
*cb
, void *arg
);
54 struct nlattr
*nest
[4];
61 swconfig_get_vlan_ports(struct switch_dev
*dev
, const struct switch_attr
*attr
,
62 struct switch_val
*val
)
65 if (val
->port_vlan
>= dev
->vlans
)
68 if (!dev
->ops
->get_vlan_ports
)
71 ret
= dev
->ops
->get_vlan_ports(dev
, val
);
76 swconfig_set_vlan_ports(struct switch_dev
*dev
, const struct switch_attr
*attr
,
77 struct switch_val
*val
)
79 struct switch_port
*ports
= val
->value
.ports
;
80 const struct switch_dev_ops
*ops
= dev
->ops
;
83 if (val
->port_vlan
>= dev
->vlans
)
87 if (val
->len
> dev
->ports
)
90 if (!ops
->set_vlan_ports
)
93 for (i
= 0; i
< val
->len
; i
++) {
94 if (ports
[i
].id
>= dev
->ports
)
97 if (ops
->set_port_pvid
&&
98 !(ports
[i
].flags
& (1 << SWITCH_PORT_FLAG_TAGGED
)))
99 ops
->set_port_pvid(dev
, ports
[i
].id
, val
->port_vlan
);
102 return ops
->set_vlan_ports(dev
, val
);
106 swconfig_set_pvid(struct switch_dev
*dev
, const struct switch_attr
*attr
,
107 struct switch_val
*val
)
109 if (val
->port_vlan
>= dev
->ports
)
112 if (!dev
->ops
->set_port_pvid
)
115 return dev
->ops
->set_port_pvid(dev
, val
->port_vlan
, val
->value
.i
);
119 swconfig_get_pvid(struct switch_dev
*dev
, const struct switch_attr
*attr
,
120 struct switch_val
*val
)
122 if (val
->port_vlan
>= dev
->ports
)
125 if (!dev
->ops
->get_port_pvid
)
128 return dev
->ops
->get_port_pvid(dev
, val
->port_vlan
, &val
->value
.i
);
132 swconfig_set_link(struct switch_dev
*dev
, const struct switch_attr
*attr
,
133 struct switch_val
*val
)
135 if (!dev
->ops
->set_port_link
)
138 return dev
->ops
->set_port_link(dev
, val
->port_vlan
, val
->value
.link
);
142 swconfig_get_link(struct switch_dev
*dev
, const struct switch_attr
*attr
,
143 struct switch_val
*val
)
145 struct switch_port_link
*link
= val
->value
.link
;
147 if (val
->port_vlan
>= dev
->ports
)
150 if (!dev
->ops
->get_port_link
)
153 memset(link
, 0, sizeof(*link
));
154 return dev
->ops
->get_port_link(dev
, val
->port_vlan
, link
);
158 swconfig_apply_config(struct switch_dev
*dev
, const struct switch_attr
*attr
,
159 struct switch_val
*val
)
161 /* don't complain if not supported by the switch driver */
162 if (!dev
->ops
->apply_config
)
165 return dev
->ops
->apply_config(dev
);
169 swconfig_reset_switch(struct switch_dev
*dev
, const struct switch_attr
*attr
,
170 struct switch_val
*val
)
172 /* don't complain if not supported by the switch driver */
173 if (!dev
->ops
->reset_switch
)
176 return dev
->ops
->reset_switch(dev
);
179 enum global_defaults
{
193 static struct switch_attr default_global
[] = {
195 .type
= SWITCH_TYPE_NOVAL
,
197 .description
= "Activate changes in the hardware",
198 .set
= swconfig_apply_config
,
201 .type
= SWITCH_TYPE_NOVAL
,
203 .description
= "Reset the switch",
204 .set
= swconfig_reset_switch
,
208 static struct switch_attr default_port
[] = {
210 .type
= SWITCH_TYPE_INT
,
212 .description
= "Primary VLAN ID",
213 .set
= swconfig_set_pvid
,
214 .get
= swconfig_get_pvid
,
217 .type
= SWITCH_TYPE_LINK
,
219 .description
= "Get port link information",
220 .set
= swconfig_set_link
,
221 .get
= swconfig_get_link
,
225 static struct switch_attr default_vlan
[] = {
227 .type
= SWITCH_TYPE_PORTS
,
229 .description
= "VLAN port mapping",
230 .set
= swconfig_set_vlan_ports
,
231 .get
= swconfig_get_vlan_ports
,
235 static const struct switch_attr
*
236 swconfig_find_attr_by_name(const struct switch_attrlist
*alist
,
241 for (i
= 0; i
< alist
->n_attr
; i
++)
242 if (strcmp(name
, alist
->attr
[i
].name
) == 0)
243 return &alist
->attr
[i
];
248 static void swconfig_defaults_init(struct switch_dev
*dev
)
250 const struct switch_dev_ops
*ops
= dev
->ops
;
256 if (ops
->get_vlan_ports
|| ops
->set_vlan_ports
)
257 set_bit(VLAN_PORTS
, &dev
->def_vlan
);
259 if (ops
->get_port_pvid
|| ops
->set_port_pvid
)
260 set_bit(PORT_PVID
, &dev
->def_port
);
262 if (ops
->get_port_link
&&
263 !swconfig_find_attr_by_name(&ops
->attr_port
, "link"))
264 set_bit(PORT_LINK
, &dev
->def_port
);
266 /* always present, can be no-op */
267 set_bit(GLOBAL_APPLY
, &dev
->def_global
);
268 set_bit(GLOBAL_RESET
, &dev
->def_global
);
272 static struct genl_family switch_fam
;
274 static const struct nla_policy switch_policy
[SWITCH_ATTR_MAX
+1] = {
275 [SWITCH_ATTR_ID
] = { .type
= NLA_U32
},
276 [SWITCH_ATTR_OP_ID
] = { .type
= NLA_U32
},
277 [SWITCH_ATTR_OP_PORT
] = { .type
= NLA_U32
},
278 [SWITCH_ATTR_OP_VLAN
] = { .type
= NLA_U32
},
279 [SWITCH_ATTR_OP_VALUE_INT
] = { .type
= NLA_U32
},
280 [SWITCH_ATTR_OP_VALUE_STR
] = { .type
= NLA_NUL_STRING
},
281 [SWITCH_ATTR_OP_VALUE_PORTS
] = { .type
= NLA_NESTED
},
282 [SWITCH_ATTR_TYPE
] = { .type
= NLA_U32
},
285 static const struct nla_policy port_policy
[SWITCH_PORT_ATTR_MAX
+1] = {
286 [SWITCH_PORT_ID
] = { .type
= NLA_U32
},
287 [SWITCH_PORT_FLAG_TAGGED
] = { .type
= NLA_FLAG
},
290 static struct nla_policy link_policy
[SWITCH_LINK_ATTR_MAX
] = {
291 [SWITCH_LINK_FLAG_DUPLEX
] = { .type
= NLA_FLAG
},
292 [SWITCH_LINK_FLAG_ANEG
] = { .type
= NLA_FLAG
},
293 [SWITCH_LINK_SPEED
] = { .type
= NLA_U32
},
299 mutex_lock(&swdevs_lock
);
303 swconfig_unlock(void)
305 mutex_unlock(&swdevs_lock
);
308 static struct switch_dev
*
309 swconfig_get_dev(struct genl_info
*info
)
311 struct switch_dev
*dev
= NULL
;
312 struct switch_dev
*p
;
315 if (!info
->attrs
[SWITCH_ATTR_ID
])
318 id
= nla_get_u32(info
->attrs
[SWITCH_ATTR_ID
]);
320 list_for_each_entry(p
, &swdevs
, dev_list
) {
328 mutex_lock(&dev
->sw_mutex
);
330 pr_debug("device %d not found\n", id
);
337 swconfig_put_dev(struct switch_dev
*dev
)
339 mutex_unlock(&dev
->sw_mutex
);
343 swconfig_dump_attr(struct swconfig_callback
*cb
, void *arg
)
345 struct switch_attr
*op
= arg
;
346 struct genl_info
*info
= cb
->info
;
347 struct sk_buff
*msg
= cb
->msg
;
348 int id
= cb
->args
[0];
351 hdr
= genlmsg_put(msg
, info
->snd_portid
, info
->snd_seq
, &switch_fam
,
352 NLM_F_MULTI
, SWITCH_CMD_NEW_ATTR
);
356 if (nla_put_u32(msg
, SWITCH_ATTR_OP_ID
, id
))
357 goto nla_put_failure
;
358 if (nla_put_u32(msg
, SWITCH_ATTR_OP_TYPE
, op
->type
))
359 goto nla_put_failure
;
360 if (nla_put_string(msg
, SWITCH_ATTR_OP_NAME
, op
->name
))
361 goto nla_put_failure
;
363 if (nla_put_string(msg
, SWITCH_ATTR_OP_DESCRIPTION
,
365 goto nla_put_failure
;
367 genlmsg_end(msg
, hdr
);
370 genlmsg_cancel(msg
, hdr
);
374 /* spread multipart messages across multiple message buffers */
376 swconfig_send_multipart(struct swconfig_callback
*cb
, void *arg
)
378 struct genl_info
*info
= cb
->info
;
384 cb
->msg
= nlmsg_new(NLMSG_GOODSIZE
, GFP_KERNEL
);
389 if (!(cb
->fill(cb
, arg
) < 0))
392 /* fill failed, check if this was already the second attempt */
396 /* try again in a new message, send the current one */
399 if (cb
->close(cb
, arg
) < 0)
402 err
= genlmsg_reply(cb
->msg
, info
);
418 swconfig_list_attrs(struct sk_buff
*skb
, struct genl_info
*info
)
420 struct genlmsghdr
*hdr
= nlmsg_data(info
->nlhdr
);
421 const struct switch_attrlist
*alist
;
422 struct switch_dev
*dev
;
423 struct swconfig_callback cb
;
428 struct switch_attr
*def_list
;
429 unsigned long *def_active
;
432 dev
= swconfig_get_dev(info
);
437 case SWITCH_CMD_LIST_GLOBAL
:
438 alist
= &dev
->ops
->attr_global
;
439 def_list
= default_global
;
440 def_active
= &dev
->def_global
;
441 n_def
= ARRAY_SIZE(default_global
);
443 case SWITCH_CMD_LIST_VLAN
:
444 alist
= &dev
->ops
->attr_vlan
;
445 def_list
= default_vlan
;
446 def_active
= &dev
->def_vlan
;
447 n_def
= ARRAY_SIZE(default_vlan
);
449 case SWITCH_CMD_LIST_PORT
:
450 alist
= &dev
->ops
->attr_port
;
451 def_list
= default_port
;
452 def_active
= &dev
->def_port
;
453 n_def
= ARRAY_SIZE(default_port
);
460 memset(&cb
, 0, sizeof(cb
));
462 cb
.fill
= swconfig_dump_attr
;
463 for (i
= 0; i
< alist
->n_attr
; i
++) {
464 if (alist
->attr
[i
].disabled
)
467 err
= swconfig_send_multipart(&cb
, (void *) &alist
->attr
[i
]);
473 for (i
= 0; i
< n_def
; i
++) {
474 if (!test_bit(i
, def_active
))
476 cb
.args
[0] = SWITCH_ATTR_DEFAULTS_OFFSET
+ i
;
477 err
= swconfig_send_multipart(&cb
, (void *) &def_list
[i
]);
481 swconfig_put_dev(dev
);
486 return genlmsg_reply(cb
.msg
, info
);
492 swconfig_put_dev(dev
);
496 static const struct switch_attr
*
497 swconfig_lookup_attr(struct switch_dev
*dev
, struct genl_info
*info
,
498 struct switch_val
*val
)
500 struct genlmsghdr
*hdr
= nlmsg_data(info
->nlhdr
);
501 const struct switch_attrlist
*alist
;
502 const struct switch_attr
*attr
= NULL
;
503 unsigned int attr_id
;
506 struct switch_attr
*def_list
;
507 unsigned long *def_active
;
510 if (!info
->attrs
[SWITCH_ATTR_OP_ID
])
514 case SWITCH_CMD_SET_GLOBAL
:
515 case SWITCH_CMD_GET_GLOBAL
:
516 alist
= &dev
->ops
->attr_global
;
517 def_list
= default_global
;
518 def_active
= &dev
->def_global
;
519 n_def
= ARRAY_SIZE(default_global
);
521 case SWITCH_CMD_SET_VLAN
:
522 case SWITCH_CMD_GET_VLAN
:
523 alist
= &dev
->ops
->attr_vlan
;
524 def_list
= default_vlan
;
525 def_active
= &dev
->def_vlan
;
526 n_def
= ARRAY_SIZE(default_vlan
);
527 if (!info
->attrs
[SWITCH_ATTR_OP_VLAN
])
529 val
->port_vlan
= nla_get_u32(info
->attrs
[SWITCH_ATTR_OP_VLAN
]);
530 if (val
->port_vlan
>= dev
->vlans
)
533 case SWITCH_CMD_SET_PORT
:
534 case SWITCH_CMD_GET_PORT
:
535 alist
= &dev
->ops
->attr_port
;
536 def_list
= default_port
;
537 def_active
= &dev
->def_port
;
538 n_def
= ARRAY_SIZE(default_port
);
539 if (!info
->attrs
[SWITCH_ATTR_OP_PORT
])
541 val
->port_vlan
= nla_get_u32(info
->attrs
[SWITCH_ATTR_OP_PORT
]);
542 if (val
->port_vlan
>= dev
->ports
)
553 attr_id
= nla_get_u32(info
->attrs
[SWITCH_ATTR_OP_ID
]);
554 if (attr_id
>= SWITCH_ATTR_DEFAULTS_OFFSET
) {
555 attr_id
-= SWITCH_ATTR_DEFAULTS_OFFSET
;
556 if (attr_id
>= n_def
)
558 if (!test_bit(attr_id
, def_active
))
560 attr
= &def_list
[attr_id
];
562 if (attr_id
>= alist
->n_attr
)
564 attr
= &alist
->attr
[attr_id
];
572 pr_debug("attribute lookup failed\n");
578 swconfig_parse_ports(struct sk_buff
*msg
, struct nlattr
*head
,
579 struct switch_val
*val
, int max
)
585 nla_for_each_nested(nla
, head
, rem
) {
586 struct nlattr
*tb
[SWITCH_PORT_ATTR_MAX
+1];
587 struct switch_port
*port
;
592 port
= &val
->value
.ports
[val
->len
];
594 #if LINUX_VERSION_CODE < KERNEL_VERSION(4,12,0)
595 if (nla_parse_nested(tb
, SWITCH_PORT_ATTR_MAX
, nla
,
598 if (nla_parse_nested(tb
, SWITCH_PORT_ATTR_MAX
, nla
,
603 if (!tb
[SWITCH_PORT_ID
])
606 port
->id
= nla_get_u32(tb
[SWITCH_PORT_ID
]);
607 if (tb
[SWITCH_PORT_FLAG_TAGGED
])
608 port
->flags
|= (1 << SWITCH_PORT_FLAG_TAGGED
);
616 swconfig_parse_link(struct sk_buff
*msg
, struct nlattr
*nla
,
617 struct switch_port_link
*link
)
619 struct nlattr
*tb
[SWITCH_LINK_ATTR_MAX
+ 1];
621 #if LINUX_VERSION_CODE < KERNEL_VERSION(4,12,0)
622 if (nla_parse_nested(tb
, SWITCH_LINK_ATTR_MAX
, nla
, link_policy
))
624 if (nla_parse_nested(tb
, SWITCH_LINK_ATTR_MAX
, nla
, link_policy
, NULL
))
628 link
->duplex
= !!tb
[SWITCH_LINK_FLAG_DUPLEX
];
629 link
->aneg
= !!tb
[SWITCH_LINK_FLAG_ANEG
];
630 link
->speed
= nla_get_u32(tb
[SWITCH_LINK_SPEED
]);
636 swconfig_set_attr(struct sk_buff
*skb
, struct genl_info
*info
)
638 const struct switch_attr
*attr
;
639 struct switch_dev
*dev
;
640 struct switch_val val
;
643 if (!capable(CAP_NET_ADMIN
))
646 dev
= swconfig_get_dev(info
);
650 memset(&val
, 0, sizeof(val
));
651 attr
= swconfig_lookup_attr(dev
, info
, &val
);
652 if (!attr
|| !attr
->set
)
656 switch (attr
->type
) {
657 case SWITCH_TYPE_NOVAL
:
659 case SWITCH_TYPE_INT
:
660 if (!info
->attrs
[SWITCH_ATTR_OP_VALUE_INT
])
663 nla_get_u32(info
->attrs
[SWITCH_ATTR_OP_VALUE_INT
]);
665 case SWITCH_TYPE_STRING
:
666 if (!info
->attrs
[SWITCH_ATTR_OP_VALUE_STR
])
669 nla_data(info
->attrs
[SWITCH_ATTR_OP_VALUE_STR
]);
671 case SWITCH_TYPE_PORTS
:
672 val
.value
.ports
= dev
->portbuf
;
673 memset(dev
->portbuf
, 0,
674 sizeof(struct switch_port
) * dev
->ports
);
676 /* TODO: implement multipart? */
677 if (info
->attrs
[SWITCH_ATTR_OP_VALUE_PORTS
]) {
678 err
= swconfig_parse_ports(skb
,
679 info
->attrs
[SWITCH_ATTR_OP_VALUE_PORTS
],
688 case SWITCH_TYPE_LINK
:
689 val
.value
.link
= &dev
->linkbuf
;
690 memset(&dev
->linkbuf
, 0, sizeof(struct switch_port_link
));
692 if (info
->attrs
[SWITCH_ATTR_OP_VALUE_LINK
]) {
693 err
= swconfig_parse_link(skb
,
694 info
->attrs
[SWITCH_ATTR_OP_VALUE_LINK
],
707 err
= attr
->set(dev
, attr
, &val
);
709 swconfig_put_dev(dev
);
714 swconfig_close_portlist(struct swconfig_callback
*cb
, void *arg
)
717 nla_nest_end(cb
->msg
, cb
->nest
[0]);
722 swconfig_send_port(struct swconfig_callback
*cb
, void *arg
)
724 const struct switch_port
*port
= arg
;
725 struct nlattr
*p
= NULL
;
728 cb
->nest
[0] = nla_nest_start(cb
->msg
, cb
->cmd
);
733 p
= nla_nest_start(cb
->msg
, SWITCH_ATTR_PORT
);
737 if (nla_put_u32(cb
->msg
, SWITCH_PORT_ID
, port
->id
))
738 goto nla_put_failure
;
739 if (port
->flags
& (1 << SWITCH_PORT_FLAG_TAGGED
)) {
740 if (nla_put_flag(cb
->msg
, SWITCH_PORT_FLAG_TAGGED
))
741 goto nla_put_failure
;
744 nla_nest_end(cb
->msg
, p
);
748 nla_nest_cancel(cb
->msg
, p
);
750 nla_nest_cancel(cb
->msg
, cb
->nest
[0]);
755 swconfig_send_ports(struct sk_buff
**msg
, struct genl_info
*info
, int attr
,
756 const struct switch_val
*val
)
758 struct swconfig_callback cb
;
762 if (!val
->value
.ports
)
765 memset(&cb
, 0, sizeof(cb
));
769 cb
.fill
= swconfig_send_port
;
770 cb
.close
= swconfig_close_portlist
;
772 cb
.nest
[0] = nla_nest_start(cb
.msg
, cb
.cmd
);
773 for (i
= 0; i
< val
->len
; i
++) {
774 err
= swconfig_send_multipart(&cb
, &val
->value
.ports
[i
]);
779 swconfig_close_portlist(&cb
, NULL
);
787 swconfig_send_link(struct sk_buff
*msg
, struct genl_info
*info
, int attr
,
788 const struct switch_port_link
*link
)
790 struct nlattr
*p
= NULL
;
793 p
= nla_nest_start(msg
, attr
);
795 if (nla_put_flag(msg
, SWITCH_LINK_FLAG_LINK
))
796 goto nla_put_failure
;
799 if (nla_put_flag(msg
, SWITCH_LINK_FLAG_DUPLEX
))
800 goto nla_put_failure
;
803 if (nla_put_flag(msg
, SWITCH_LINK_FLAG_ANEG
))
804 goto nla_put_failure
;
807 if (nla_put_flag(msg
, SWITCH_LINK_FLAG_TX_FLOW
))
808 goto nla_put_failure
;
811 if (nla_put_flag(msg
, SWITCH_LINK_FLAG_RX_FLOW
))
812 goto nla_put_failure
;
814 if (nla_put_u32(msg
, SWITCH_LINK_SPEED
, link
->speed
))
815 goto nla_put_failure
;
816 if (link
->eee
& ADVERTISED_100baseT_Full
) {
817 if (nla_put_flag(msg
, SWITCH_LINK_FLAG_EEE_100BASET
))
818 goto nla_put_failure
;
820 if (link
->eee
& ADVERTISED_1000baseT_Full
) {
821 if (nla_put_flag(msg
, SWITCH_LINK_FLAG_EEE_1000BASET
))
822 goto nla_put_failure
;
824 nla_nest_end(msg
, p
);
829 nla_nest_cancel(msg
, p
);
834 swconfig_get_attr(struct sk_buff
*skb
, struct genl_info
*info
)
836 struct genlmsghdr
*hdr
= nlmsg_data(info
->nlhdr
);
837 const struct switch_attr
*attr
;
838 struct switch_dev
*dev
;
839 struct sk_buff
*msg
= NULL
;
840 struct switch_val val
;
844 dev
= swconfig_get_dev(info
);
848 memset(&val
, 0, sizeof(val
));
849 attr
= swconfig_lookup_attr(dev
, info
, &val
);
850 if (!attr
|| !attr
->get
)
853 if (attr
->type
== SWITCH_TYPE_PORTS
) {
854 val
.value
.ports
= dev
->portbuf
;
855 memset(dev
->portbuf
, 0,
856 sizeof(struct switch_port
) * dev
->ports
);
857 } else if (attr
->type
== SWITCH_TYPE_LINK
) {
858 val
.value
.link
= &dev
->linkbuf
;
859 memset(&dev
->linkbuf
, 0, sizeof(struct switch_port_link
));
862 err
= attr
->get(dev
, attr
, &val
);
866 msg
= nlmsg_new(NLMSG_GOODSIZE
, GFP_KERNEL
);
870 hdr
= genlmsg_put(msg
, info
->snd_portid
, info
->snd_seq
, &switch_fam
,
873 goto nla_put_failure
;
875 switch (attr
->type
) {
876 case SWITCH_TYPE_INT
:
877 if (nla_put_u32(msg
, SWITCH_ATTR_OP_VALUE_INT
, val
.value
.i
))
878 goto nla_put_failure
;
880 case SWITCH_TYPE_STRING
:
881 if (nla_put_string(msg
, SWITCH_ATTR_OP_VALUE_STR
, val
.value
.s
))
882 goto nla_put_failure
;
884 case SWITCH_TYPE_PORTS
:
885 err
= swconfig_send_ports(&msg
, info
,
886 SWITCH_ATTR_OP_VALUE_PORTS
, &val
);
888 goto nla_put_failure
;
890 case SWITCH_TYPE_LINK
:
891 err
= swconfig_send_link(msg
, info
,
892 SWITCH_ATTR_OP_VALUE_LINK
, val
.value
.link
);
894 goto nla_put_failure
;
897 pr_debug("invalid type in attribute\n");
899 goto nla_put_failure
;
901 genlmsg_end(msg
, hdr
);
904 goto nla_put_failure
;
906 swconfig_put_dev(dev
);
907 return genlmsg_reply(msg
, info
);
913 swconfig_put_dev(dev
);
920 swconfig_send_switch(struct sk_buff
*msg
, u32 pid
, u32 seq
, int flags
,
921 const struct switch_dev
*dev
)
923 struct nlattr
*p
= NULL
, *m
= NULL
;
927 hdr
= genlmsg_put(msg
, pid
, seq
, &switch_fam
, flags
,
928 SWITCH_CMD_NEW_ATTR
);
932 if (nla_put_u32(msg
, SWITCH_ATTR_ID
, dev
->id
))
933 goto nla_put_failure
;
934 if (nla_put_string(msg
, SWITCH_ATTR_DEV_NAME
, dev
->devname
))
935 goto nla_put_failure
;
936 if (nla_put_string(msg
, SWITCH_ATTR_ALIAS
, dev
->alias
))
937 goto nla_put_failure
;
938 if (nla_put_string(msg
, SWITCH_ATTR_NAME
, dev
->name
))
939 goto nla_put_failure
;
940 if (nla_put_u32(msg
, SWITCH_ATTR_VLANS
, dev
->vlans
))
941 goto nla_put_failure
;
942 if (nla_put_u32(msg
, SWITCH_ATTR_PORTS
, dev
->ports
))
943 goto nla_put_failure
;
944 if (nla_put_u32(msg
, SWITCH_ATTR_CPU_PORT
, dev
->cpu_port
))
945 goto nla_put_failure
;
947 m
= nla_nest_start(msg
, SWITCH_ATTR_PORTMAP
);
949 goto nla_put_failure
;
950 for (i
= 0; i
< dev
->ports
; i
++) {
951 p
= nla_nest_start(msg
, SWITCH_ATTR_PORTS
);
954 if (dev
->portmap
[i
].s
) {
955 if (nla_put_string(msg
, SWITCH_PORTMAP_SEGMENT
,
957 goto nla_put_failure
;
958 if (nla_put_u32(msg
, SWITCH_PORTMAP_VIRT
,
959 dev
->portmap
[i
].virt
))
960 goto nla_put_failure
;
962 nla_nest_end(msg
, p
);
964 nla_nest_end(msg
, m
);
965 genlmsg_end(msg
, hdr
);
968 genlmsg_cancel(msg
, hdr
);
972 static int swconfig_dump_switches(struct sk_buff
*skb
,
973 struct netlink_callback
*cb
)
975 struct switch_dev
*dev
;
976 int start
= cb
->args
[0];
980 list_for_each_entry(dev
, &swdevs
, dev_list
) {
983 if (swconfig_send_switch(skb
, NETLINK_CB(cb
->skb
).portid
,
984 cb
->nlh
->nlmsg_seq
, NLM_F_MULTI
,
995 swconfig_done(struct netlink_callback
*cb
)
1000 static struct genl_ops swconfig_ops
[] = {
1002 .cmd
= SWITCH_CMD_LIST_GLOBAL
,
1003 .doit
= swconfig_list_attrs
,
1004 #if LINUX_VERSION_CODE < KERNEL_VERSION(5,2,0)
1005 .policy
= switch_policy
,
1009 .cmd
= SWITCH_CMD_LIST_VLAN
,
1010 .doit
= swconfig_list_attrs
,
1011 #if LINUX_VERSION_CODE < KERNEL_VERSION(5,2,0)
1012 .policy
= switch_policy
,
1016 .cmd
= SWITCH_CMD_LIST_PORT
,
1017 .doit
= swconfig_list_attrs
,
1018 #if LINUX_VERSION_CODE < KERNEL_VERSION(5,2,0)
1019 .policy
= switch_policy
,
1023 .cmd
= SWITCH_CMD_GET_GLOBAL
,
1024 .doit
= swconfig_get_attr
,
1025 #if LINUX_VERSION_CODE < KERNEL_VERSION(5,2,0)
1026 .policy
= switch_policy
,
1030 .cmd
= SWITCH_CMD_GET_VLAN
,
1031 .doit
= swconfig_get_attr
,
1032 #if LINUX_VERSION_CODE < KERNEL_VERSION(5,2,0)
1033 .policy
= switch_policy
,
1037 .cmd
= SWITCH_CMD_GET_PORT
,
1038 .doit
= swconfig_get_attr
,
1039 #if LINUX_VERSION_CODE < KERNEL_VERSION(5,2,0)
1040 .policy
= switch_policy
,
1044 .cmd
= SWITCH_CMD_SET_GLOBAL
,
1045 .flags
= GENL_ADMIN_PERM
,
1046 .doit
= swconfig_set_attr
,
1047 #if LINUX_VERSION_CODE < KERNEL_VERSION(5,2,0)
1048 .policy
= switch_policy
,
1052 .cmd
= SWITCH_CMD_SET_VLAN
,
1053 .flags
= GENL_ADMIN_PERM
,
1054 .doit
= swconfig_set_attr
,
1055 #if LINUX_VERSION_CODE < KERNEL_VERSION(5,2,0)
1056 .policy
= switch_policy
,
1060 .cmd
= SWITCH_CMD_SET_PORT
,
1061 .flags
= GENL_ADMIN_PERM
,
1062 .doit
= swconfig_set_attr
,
1063 #if LINUX_VERSION_CODE < KERNEL_VERSION(5,2,0)
1064 .policy
= switch_policy
,
1068 .cmd
= SWITCH_CMD_GET_SWITCH
,
1069 .dumpit
= swconfig_dump_switches
,
1070 #if LINUX_VERSION_CODE < KERNEL_VERSION(5,2,0)
1071 .policy
= switch_policy
,
1073 .done
= swconfig_done
,
1077 static struct genl_family switch_fam
= {
1078 #if LINUX_VERSION_CODE < KERNEL_VERSION(4,10,0)
1079 .id
= GENL_ID_GENERATE
,
1084 .maxattr
= SWITCH_ATTR_MAX
,
1085 #if LINUX_VERSION_CODE > KERNEL_VERSION(5,1,0)
1086 .policy
= switch_policy
,
1088 .module
= THIS_MODULE
,
1089 .ops
= swconfig_ops
,
1090 .n_ops
= ARRAY_SIZE(swconfig_ops
),
1095 of_switch_load_portmap(struct switch_dev
*dev
)
1097 struct device_node
*port
;
1102 for_each_child_of_node(dev
->of_node
, port
) {
1104 const char *segment
;
1107 if (!of_device_is_compatible(port
, "swconfig,port"))
1110 if (of_property_read_string(port
, "swconfig,segment", &segment
))
1113 prop
= of_get_property(port
, "swconfig,portmap", &size
);
1117 if (size
!= (2 * sizeof(*prop
))) {
1118 pr_err("%s: failed to parse port mapping\n",
1123 phys
= be32_to_cpup(prop
++);
1124 if ((phys
< 0) | (phys
>= dev
->ports
)) {
1125 pr_err("%s: physical port index out of range\n",
1130 dev
->portmap
[phys
].s
= kstrdup(segment
, GFP_KERNEL
);
1131 dev
->portmap
[phys
].virt
= be32_to_cpup(prop
);
1132 pr_debug("Found port: %s, physical: %d, virtual: %d\n",
1133 segment
, phys
, dev
->portmap
[phys
].virt
);
1139 register_switch(struct switch_dev
*dev
, struct net_device
*netdev
)
1141 struct switch_dev
*sdev
;
1142 const int max_switches
= 8 * sizeof(unsigned long);
1143 unsigned long in_use
= 0;
1147 INIT_LIST_HEAD(&dev
->dev_list
);
1149 dev
->netdev
= netdev
;
1151 dev
->alias
= netdev
->name
;
1153 BUG_ON(!dev
->alias
);
1155 /* Make sure swdev_id doesn't overflow */
1156 if (swdev_id
== INT_MAX
) {
1160 if (dev
->ports
> 0) {
1161 dev
->portbuf
= kzalloc(sizeof(struct switch_port
) *
1162 dev
->ports
, GFP_KERNEL
);
1165 dev
->portmap
= kzalloc(sizeof(struct switch_portmap
) *
1166 dev
->ports
, GFP_KERNEL
);
1167 if (!dev
->portmap
) {
1168 kfree(dev
->portbuf
);
1172 swconfig_defaults_init(dev
);
1173 mutex_init(&dev
->sw_mutex
);
1175 dev
->id
= ++swdev_id
;
1177 list_for_each_entry(sdev
, &swdevs
, dev_list
) {
1178 if (!sscanf(sdev
->devname
, SWCONFIG_DEVNAME
, &i
))
1180 if (i
< 0 || i
> max_switches
)
1183 set_bit(i
, &in_use
);
1185 i
= find_first_zero_bit(&in_use
, max_switches
);
1187 if (i
== max_switches
) {
1194 of_switch_load_portmap(dev
);
1197 /* fill device name */
1198 snprintf(dev
->devname
, IFNAMSIZ
, SWCONFIG_DEVNAME
, i
);
1200 list_add_tail(&dev
->dev_list
, &swdevs
);
1203 err
= swconfig_create_led_trigger(dev
);
1209 EXPORT_SYMBOL_GPL(register_switch
);
1212 unregister_switch(struct switch_dev
*dev
)
1214 swconfig_destroy_led_trigger(dev
);
1215 kfree(dev
->portbuf
);
1216 mutex_lock(&dev
->sw_mutex
);
1218 list_del(&dev
->dev_list
);
1220 mutex_unlock(&dev
->sw_mutex
);
1222 EXPORT_SYMBOL_GPL(unregister_switch
);
1225 switch_generic_set_link(struct switch_dev
*dev
, int port
,
1226 struct switch_port_link
*link
)
1228 if (WARN_ON(!dev
->ops
->phy_write16
))
1231 /* Generic implementation */
1233 dev
->ops
->phy_write16(dev
, port
, MII_BMCR
, 0x0000);
1234 dev
->ops
->phy_write16(dev
, port
, MII_BMCR
, BMCR_ANENABLE
| BMCR_ANRESTART
);
1239 bmcr
|= BMCR_FULLDPLX
;
1241 switch (link
->speed
) {
1242 case SWITCH_PORT_SPEED_10
:
1244 case SWITCH_PORT_SPEED_100
:
1245 bmcr
|= BMCR_SPEED100
;
1247 case SWITCH_PORT_SPEED_1000
:
1248 bmcr
|= BMCR_SPEED1000
;
1254 dev
->ops
->phy_write16(dev
, port
, MII_BMCR
, bmcr
);
1263 INIT_LIST_HEAD(&swdevs
);
1265 #if LINUX_VERSION_CODE < KERNEL_VERSION(4,10,0)
1266 return genl_register_family_with_ops(&switch_fam
, swconfig_ops
);
1268 return genl_register_family(&switch_fam
);
1275 genl_unregister_family(&switch_fam
);
1278 module_init(swconfig_init
);
1279 module_exit(swconfig_exit
);