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 (nla_parse_nested_deprecated(tb
, SWITCH_PORT_ATTR_MAX
, nla
,
598 if (!tb
[SWITCH_PORT_ID
])
601 port
->id
= nla_get_u32(tb
[SWITCH_PORT_ID
]);
602 if (tb
[SWITCH_PORT_FLAG_TAGGED
])
603 port
->flags
|= (1 << SWITCH_PORT_FLAG_TAGGED
);
611 swconfig_parse_link(struct sk_buff
*msg
, struct nlattr
*nla
,
612 struct switch_port_link
*link
)
614 struct nlattr
*tb
[SWITCH_LINK_ATTR_MAX
+ 1];
616 if (nla_parse_nested_deprecated(tb
, SWITCH_LINK_ATTR_MAX
, nla
, link_policy
, NULL
))
619 link
->duplex
= !!tb
[SWITCH_LINK_FLAG_DUPLEX
];
620 link
->aneg
= !!tb
[SWITCH_LINK_FLAG_ANEG
];
621 link
->speed
= nla_get_u32(tb
[SWITCH_LINK_SPEED
]);
627 swconfig_set_attr(struct sk_buff
*skb
, struct genl_info
*info
)
629 const struct switch_attr
*attr
;
630 struct switch_dev
*dev
;
631 struct switch_val val
;
634 if (!capable(CAP_NET_ADMIN
))
637 dev
= swconfig_get_dev(info
);
641 memset(&val
, 0, sizeof(val
));
642 attr
= swconfig_lookup_attr(dev
, info
, &val
);
643 if (!attr
|| !attr
->set
)
647 switch (attr
->type
) {
648 case SWITCH_TYPE_NOVAL
:
650 case SWITCH_TYPE_INT
:
651 if (!info
->attrs
[SWITCH_ATTR_OP_VALUE_INT
])
654 nla_get_u32(info
->attrs
[SWITCH_ATTR_OP_VALUE_INT
]);
656 case SWITCH_TYPE_STRING
:
657 if (!info
->attrs
[SWITCH_ATTR_OP_VALUE_STR
])
660 nla_data(info
->attrs
[SWITCH_ATTR_OP_VALUE_STR
]);
662 case SWITCH_TYPE_PORTS
:
663 val
.value
.ports
= dev
->portbuf
;
664 memset(dev
->portbuf
, 0,
665 sizeof(struct switch_port
) * dev
->ports
);
667 /* TODO: implement multipart? */
668 if (info
->attrs
[SWITCH_ATTR_OP_VALUE_PORTS
]) {
669 err
= swconfig_parse_ports(skb
,
670 info
->attrs
[SWITCH_ATTR_OP_VALUE_PORTS
],
679 case SWITCH_TYPE_LINK
:
680 val
.value
.link
= &dev
->linkbuf
;
681 memset(&dev
->linkbuf
, 0, sizeof(struct switch_port_link
));
683 if (info
->attrs
[SWITCH_ATTR_OP_VALUE_LINK
]) {
684 err
= swconfig_parse_link(skb
,
685 info
->attrs
[SWITCH_ATTR_OP_VALUE_LINK
],
698 err
= attr
->set(dev
, attr
, &val
);
700 swconfig_put_dev(dev
);
705 swconfig_close_portlist(struct swconfig_callback
*cb
, void *arg
)
708 nla_nest_end(cb
->msg
, cb
->nest
[0]);
713 swconfig_send_port(struct swconfig_callback
*cb
, void *arg
)
715 const struct switch_port
*port
= arg
;
716 struct nlattr
*p
= NULL
;
719 cb
->nest
[0] = nla_nest_start(cb
->msg
, cb
->cmd
);
724 p
= nla_nest_start(cb
->msg
, SWITCH_ATTR_PORT
);
728 if (nla_put_u32(cb
->msg
, SWITCH_PORT_ID
, port
->id
))
729 goto nla_put_failure
;
730 if (port
->flags
& (1 << SWITCH_PORT_FLAG_TAGGED
)) {
731 if (nla_put_flag(cb
->msg
, SWITCH_PORT_FLAG_TAGGED
))
732 goto nla_put_failure
;
735 nla_nest_end(cb
->msg
, p
);
739 nla_nest_cancel(cb
->msg
, p
);
741 nla_nest_cancel(cb
->msg
, cb
->nest
[0]);
746 swconfig_send_ports(struct sk_buff
**msg
, struct genl_info
*info
, int attr
,
747 const struct switch_val
*val
)
749 struct swconfig_callback cb
;
753 if (!val
->value
.ports
)
756 memset(&cb
, 0, sizeof(cb
));
760 cb
.fill
= swconfig_send_port
;
761 cb
.close
= swconfig_close_portlist
;
763 cb
.nest
[0] = nla_nest_start(cb
.msg
, cb
.cmd
);
764 for (i
= 0; i
< val
->len
; i
++) {
765 err
= swconfig_send_multipart(&cb
, &val
->value
.ports
[i
]);
770 swconfig_close_portlist(&cb
, NULL
);
778 swconfig_send_link(struct sk_buff
*msg
, struct genl_info
*info
, int attr
,
779 const struct switch_port_link
*link
)
781 struct nlattr
*p
= NULL
;
784 p
= nla_nest_start(msg
, attr
);
786 if (nla_put_flag(msg
, SWITCH_LINK_FLAG_LINK
))
787 goto nla_put_failure
;
790 if (nla_put_flag(msg
, SWITCH_LINK_FLAG_DUPLEX
))
791 goto nla_put_failure
;
794 if (nla_put_flag(msg
, SWITCH_LINK_FLAG_ANEG
))
795 goto nla_put_failure
;
798 if (nla_put_flag(msg
, SWITCH_LINK_FLAG_TX_FLOW
))
799 goto nla_put_failure
;
802 if (nla_put_flag(msg
, SWITCH_LINK_FLAG_RX_FLOW
))
803 goto nla_put_failure
;
805 if (nla_put_u32(msg
, SWITCH_LINK_SPEED
, link
->speed
))
806 goto nla_put_failure
;
807 if (link
->eee
& ADVERTISED_100baseT_Full
) {
808 if (nla_put_flag(msg
, SWITCH_LINK_FLAG_EEE_100BASET
))
809 goto nla_put_failure
;
811 if (link
->eee
& ADVERTISED_1000baseT_Full
) {
812 if (nla_put_flag(msg
, SWITCH_LINK_FLAG_EEE_1000BASET
))
813 goto nla_put_failure
;
815 nla_nest_end(msg
, p
);
820 nla_nest_cancel(msg
, p
);
825 swconfig_get_attr(struct sk_buff
*skb
, struct genl_info
*info
)
827 struct genlmsghdr
*hdr
= nlmsg_data(info
->nlhdr
);
828 const struct switch_attr
*attr
;
829 struct switch_dev
*dev
;
830 struct sk_buff
*msg
= NULL
;
831 struct switch_val val
;
835 dev
= swconfig_get_dev(info
);
839 memset(&val
, 0, sizeof(val
));
840 attr
= swconfig_lookup_attr(dev
, info
, &val
);
841 if (!attr
|| !attr
->get
)
844 if (attr
->type
== SWITCH_TYPE_PORTS
) {
845 val
.value
.ports
= dev
->portbuf
;
846 memset(dev
->portbuf
, 0,
847 sizeof(struct switch_port
) * dev
->ports
);
848 } else if (attr
->type
== SWITCH_TYPE_LINK
) {
849 val
.value
.link
= &dev
->linkbuf
;
850 memset(&dev
->linkbuf
, 0, sizeof(struct switch_port_link
));
853 err
= attr
->get(dev
, attr
, &val
);
857 msg
= nlmsg_new(NLMSG_GOODSIZE
, GFP_KERNEL
);
861 hdr
= genlmsg_put(msg
, info
->snd_portid
, info
->snd_seq
, &switch_fam
,
864 goto nla_put_failure
;
866 switch (attr
->type
) {
867 case SWITCH_TYPE_INT
:
868 if (nla_put_u32(msg
, SWITCH_ATTR_OP_VALUE_INT
, val
.value
.i
))
869 goto nla_put_failure
;
871 case SWITCH_TYPE_STRING
:
872 if (nla_put_string(msg
, SWITCH_ATTR_OP_VALUE_STR
, val
.value
.s
))
873 goto nla_put_failure
;
875 case SWITCH_TYPE_PORTS
:
876 err
= swconfig_send_ports(&msg
, info
,
877 SWITCH_ATTR_OP_VALUE_PORTS
, &val
);
879 goto nla_put_failure
;
881 case SWITCH_TYPE_LINK
:
882 err
= swconfig_send_link(msg
, info
,
883 SWITCH_ATTR_OP_VALUE_LINK
, val
.value
.link
);
885 goto nla_put_failure
;
888 pr_debug("invalid type in attribute\n");
890 goto nla_put_failure
;
892 genlmsg_end(msg
, hdr
);
895 goto nla_put_failure
;
897 swconfig_put_dev(dev
);
898 return genlmsg_reply(msg
, info
);
904 swconfig_put_dev(dev
);
911 swconfig_send_switch(struct sk_buff
*msg
, u32 pid
, u32 seq
, int flags
,
912 const struct switch_dev
*dev
)
914 struct nlattr
*p
= NULL
, *m
= NULL
;
918 hdr
= genlmsg_put(msg
, pid
, seq
, &switch_fam
, flags
,
919 SWITCH_CMD_NEW_ATTR
);
923 if (nla_put_u32(msg
, SWITCH_ATTR_ID
, dev
->id
))
924 goto nla_put_failure
;
925 if (nla_put_string(msg
, SWITCH_ATTR_DEV_NAME
, dev
->devname
))
926 goto nla_put_failure
;
927 if (nla_put_string(msg
, SWITCH_ATTR_ALIAS
, dev
->alias
))
928 goto nla_put_failure
;
929 if (nla_put_string(msg
, SWITCH_ATTR_NAME
, dev
->name
))
930 goto nla_put_failure
;
931 if (nla_put_u32(msg
, SWITCH_ATTR_VLANS
, dev
->vlans
))
932 goto nla_put_failure
;
933 if (nla_put_u32(msg
, SWITCH_ATTR_PORTS
, dev
->ports
))
934 goto nla_put_failure
;
935 if (nla_put_u32(msg
, SWITCH_ATTR_CPU_PORT
, dev
->cpu_port
))
936 goto nla_put_failure
;
938 m
= nla_nest_start(msg
, SWITCH_ATTR_PORTMAP
);
940 goto nla_put_failure
;
941 for (i
= 0; i
< dev
->ports
; i
++) {
942 p
= nla_nest_start(msg
, SWITCH_ATTR_PORTS
);
945 if (dev
->portmap
[i
].s
) {
946 if (nla_put_string(msg
, SWITCH_PORTMAP_SEGMENT
,
948 goto nla_put_failure
;
949 if (nla_put_u32(msg
, SWITCH_PORTMAP_VIRT
,
950 dev
->portmap
[i
].virt
))
951 goto nla_put_failure
;
953 nla_nest_end(msg
, p
);
955 nla_nest_end(msg
, m
);
956 genlmsg_end(msg
, hdr
);
959 genlmsg_cancel(msg
, hdr
);
963 static int swconfig_dump_switches(struct sk_buff
*skb
,
964 struct netlink_callback
*cb
)
966 struct switch_dev
*dev
;
967 int start
= cb
->args
[0];
971 list_for_each_entry(dev
, &swdevs
, dev_list
) {
974 if (swconfig_send_switch(skb
, NETLINK_CB(cb
->skb
).portid
,
975 cb
->nlh
->nlmsg_seq
, NLM_F_MULTI
,
986 swconfig_done(struct netlink_callback
*cb
)
991 static struct genl_ops swconfig_ops
[] = {
993 .cmd
= SWITCH_CMD_LIST_GLOBAL
,
994 .validate
= GENL_DONT_VALIDATE_STRICT
| GENL_DONT_VALIDATE_DUMP
,
995 .doit
= swconfig_list_attrs
,
998 .cmd
= SWITCH_CMD_LIST_VLAN
,
999 .validate
= GENL_DONT_VALIDATE_STRICT
| GENL_DONT_VALIDATE_DUMP
,
1000 .doit
= swconfig_list_attrs
,
1003 .cmd
= SWITCH_CMD_LIST_PORT
,
1004 .validate
= GENL_DONT_VALIDATE_STRICT
| GENL_DONT_VALIDATE_DUMP
,
1005 .doit
= swconfig_list_attrs
,
1008 .cmd
= SWITCH_CMD_GET_GLOBAL
,
1009 .validate
= GENL_DONT_VALIDATE_STRICT
| GENL_DONT_VALIDATE_DUMP
,
1010 .doit
= swconfig_get_attr
,
1013 .cmd
= SWITCH_CMD_GET_VLAN
,
1014 .validate
= GENL_DONT_VALIDATE_STRICT
| GENL_DONT_VALIDATE_DUMP
,
1015 .doit
= swconfig_get_attr
,
1018 .cmd
= SWITCH_CMD_GET_PORT
,
1019 .validate
= GENL_DONT_VALIDATE_STRICT
| GENL_DONT_VALIDATE_DUMP
,
1020 .doit
= swconfig_get_attr
,
1023 .cmd
= SWITCH_CMD_SET_GLOBAL
,
1024 .validate
= GENL_DONT_VALIDATE_STRICT
| GENL_DONT_VALIDATE_DUMP
,
1025 .flags
= GENL_ADMIN_PERM
,
1026 .doit
= swconfig_set_attr
,
1029 .cmd
= SWITCH_CMD_SET_VLAN
,
1030 .validate
= GENL_DONT_VALIDATE_STRICT
| GENL_DONT_VALIDATE_DUMP
,
1031 .flags
= GENL_ADMIN_PERM
,
1032 .doit
= swconfig_set_attr
,
1035 .cmd
= SWITCH_CMD_SET_PORT
,
1036 .validate
= GENL_DONT_VALIDATE_STRICT
| GENL_DONT_VALIDATE_DUMP
,
1037 .flags
= GENL_ADMIN_PERM
,
1038 .doit
= swconfig_set_attr
,
1041 .cmd
= SWITCH_CMD_GET_SWITCH
,
1042 .validate
= GENL_DONT_VALIDATE_STRICT
| GENL_DONT_VALIDATE_DUMP
,
1043 .dumpit
= swconfig_dump_switches
,
1044 .done
= swconfig_done
,
1048 static struct genl_family switch_fam
= {
1052 .maxattr
= SWITCH_ATTR_MAX
,
1053 .policy
= switch_policy
,
1054 .module
= THIS_MODULE
,
1055 .ops
= swconfig_ops
,
1056 .n_ops
= ARRAY_SIZE(swconfig_ops
),
1061 of_switch_load_portmap(struct switch_dev
*dev
)
1063 struct device_node
*port
;
1068 for_each_child_of_node(dev
->of_node
, port
) {
1070 const char *segment
;
1073 if (!of_device_is_compatible(port
, "swconfig,port"))
1076 if (of_property_read_string(port
, "swconfig,segment", &segment
))
1079 prop
= of_get_property(port
, "swconfig,portmap", &size
);
1083 if (size
!= (2 * sizeof(*prop
))) {
1084 pr_err("%s: failed to parse port mapping\n",
1089 phys
= be32_to_cpup(prop
++);
1090 if ((phys
< 0) | (phys
>= dev
->ports
)) {
1091 pr_err("%s: physical port index out of range\n",
1096 dev
->portmap
[phys
].s
= kstrdup(segment
, GFP_KERNEL
);
1097 dev
->portmap
[phys
].virt
= be32_to_cpup(prop
);
1098 pr_debug("Found port: %s, physical: %d, virtual: %d\n",
1099 segment
, phys
, dev
->portmap
[phys
].virt
);
1105 register_switch(struct switch_dev
*dev
, struct net_device
*netdev
)
1107 struct switch_dev
*sdev
;
1108 const int max_switches
= 8 * sizeof(unsigned long);
1109 unsigned long in_use
= 0;
1113 INIT_LIST_HEAD(&dev
->dev_list
);
1115 dev
->netdev
= netdev
;
1117 dev
->alias
= netdev
->name
;
1119 BUG_ON(!dev
->alias
);
1121 /* Make sure swdev_id doesn't overflow */
1122 if (swdev_id
== INT_MAX
) {
1126 if (dev
->ports
> 0) {
1127 dev
->portbuf
= kzalloc(sizeof(struct switch_port
) *
1128 dev
->ports
, GFP_KERNEL
);
1131 dev
->portmap
= kzalloc(sizeof(struct switch_portmap
) *
1132 dev
->ports
, GFP_KERNEL
);
1133 if (!dev
->portmap
) {
1134 kfree(dev
->portbuf
);
1138 swconfig_defaults_init(dev
);
1139 mutex_init(&dev
->sw_mutex
);
1141 dev
->id
= ++swdev_id
;
1143 list_for_each_entry(sdev
, &swdevs
, dev_list
) {
1144 if (!sscanf(sdev
->devname
, SWCONFIG_DEVNAME
, &i
))
1146 if (i
< 0 || i
> max_switches
)
1149 set_bit(i
, &in_use
);
1151 i
= find_first_zero_bit(&in_use
, max_switches
);
1153 if (i
== max_switches
) {
1160 of_switch_load_portmap(dev
);
1163 /* fill device name */
1164 snprintf(dev
->devname
, IFNAMSIZ
, SWCONFIG_DEVNAME
, i
);
1166 list_add_tail(&dev
->dev_list
, &swdevs
);
1169 err
= swconfig_create_led_trigger(dev
);
1175 EXPORT_SYMBOL_GPL(register_switch
);
1178 unregister_switch(struct switch_dev
*dev
)
1180 swconfig_destroy_led_trigger(dev
);
1181 kfree(dev
->portbuf
);
1182 mutex_lock(&dev
->sw_mutex
);
1184 list_del(&dev
->dev_list
);
1186 mutex_unlock(&dev
->sw_mutex
);
1188 EXPORT_SYMBOL_GPL(unregister_switch
);
1191 switch_generic_set_link(struct switch_dev
*dev
, int port
,
1192 struct switch_port_link
*link
)
1194 if (WARN_ON(!dev
->ops
->phy_write16
))
1197 /* Generic implementation */
1199 dev
->ops
->phy_write16(dev
, port
, MII_BMCR
, 0x0000);
1200 dev
->ops
->phy_write16(dev
, port
, MII_BMCR
, BMCR_ANENABLE
| BMCR_ANRESTART
);
1205 bmcr
|= BMCR_FULLDPLX
;
1207 switch (link
->speed
) {
1208 case SWITCH_PORT_SPEED_10
:
1210 case SWITCH_PORT_SPEED_100
:
1211 bmcr
|= BMCR_SPEED100
;
1213 case SWITCH_PORT_SPEED_1000
:
1214 bmcr
|= BMCR_SPEED1000
;
1220 dev
->ops
->phy_write16(dev
, port
, MII_BMCR
, bmcr
);
1225 EXPORT_SYMBOL_GPL(switch_generic_set_link
);
1230 INIT_LIST_HEAD(&swdevs
);
1232 return genl_register_family(&switch_fam
);
1238 genl_unregister_family(&switch_fam
);
1241 module_init(swconfig_init
);
1242 module_exit(swconfig_exit
);