2 * swconfig.c: Switch configuration API
4 * Copyright (C) 2008 Felix Fietkau <nbd@openwrt.org>
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>
29 #define SWCONFIG_DEVNAME "switch%d"
31 #include "swconfig_leds.c"
33 MODULE_AUTHOR("Felix Fietkau <nbd@openwrt.org>");
34 MODULE_LICENSE("GPL");
37 static struct list_head swdevs
;
38 static DEFINE_SPINLOCK(swdevs_lock
);
39 struct swconfig_callback
;
41 struct swconfig_callback
{
43 struct genlmsghdr
*hdr
;
44 struct genl_info
*info
;
47 /* callback for filling in the message data */
48 int (*fill
)(struct swconfig_callback
*cb
, void *arg
);
50 /* callback for closing the message before sending it */
51 int (*close
)(struct swconfig_callback
*cb
, void *arg
);
53 struct nlattr
*nest
[4];
60 swconfig_get_vlan_ports(struct switch_dev
*dev
, const struct switch_attr
*attr
,
61 struct switch_val
*val
)
64 if (val
->port_vlan
>= dev
->vlans
)
67 if (!dev
->ops
->get_vlan_ports
)
70 ret
= dev
->ops
->get_vlan_ports(dev
, val
);
75 swconfig_set_vlan_ports(struct switch_dev
*dev
, const struct switch_attr
*attr
,
76 struct switch_val
*val
)
78 struct switch_port
*ports
= val
->value
.ports
;
79 const struct switch_dev_ops
*ops
= dev
->ops
;
82 if (val
->port_vlan
>= dev
->vlans
)
86 if (val
->len
> dev
->ports
)
89 if (!ops
->set_vlan_ports
)
92 for (i
= 0; i
< val
->len
; i
++) {
93 if (ports
[i
].id
>= dev
->ports
)
96 if (ops
->set_port_pvid
&&
97 !(ports
[i
].flags
& (1 << SWITCH_PORT_FLAG_TAGGED
)))
98 ops
->set_port_pvid(dev
, ports
[i
].id
, val
->port_vlan
);
101 return ops
->set_vlan_ports(dev
, val
);
105 swconfig_set_pvid(struct switch_dev
*dev
, const struct switch_attr
*attr
,
106 struct switch_val
*val
)
108 if (val
->port_vlan
>= dev
->ports
)
111 if (!dev
->ops
->set_port_pvid
)
114 return dev
->ops
->set_port_pvid(dev
, val
->port_vlan
, val
->value
.i
);
118 swconfig_get_pvid(struct switch_dev
*dev
, const struct switch_attr
*attr
,
119 struct switch_val
*val
)
121 if (val
->port_vlan
>= dev
->ports
)
124 if (!dev
->ops
->get_port_pvid
)
127 return dev
->ops
->get_port_pvid(dev
, val
->port_vlan
, &val
->value
.i
);
131 swconfig_set_link(struct switch_dev
*dev
, const struct switch_attr
*attr
,
132 struct switch_val
*val
)
134 if (!dev
->ops
->set_port_link
)
137 return dev
->ops
->set_port_link(dev
, val
->port_vlan
, val
->value
.link
);
141 swconfig_get_link(struct switch_dev
*dev
, const struct switch_attr
*attr
,
142 struct switch_val
*val
)
144 struct switch_port_link
*link
= val
->value
.link
;
146 if (val
->port_vlan
>= dev
->ports
)
149 if (!dev
->ops
->get_port_link
)
152 memset(link
, 0, sizeof(*link
));
153 return dev
->ops
->get_port_link(dev
, val
->port_vlan
, link
);
157 swconfig_apply_config(struct switch_dev
*dev
, const struct switch_attr
*attr
,
158 struct switch_val
*val
)
160 /* don't complain if not supported by the switch driver */
161 if (!dev
->ops
->apply_config
)
164 return dev
->ops
->apply_config(dev
);
168 swconfig_reset_switch(struct switch_dev
*dev
, const struct switch_attr
*attr
,
169 struct switch_val
*val
)
171 /* don't complain if not supported by the switch driver */
172 if (!dev
->ops
->reset_switch
)
175 return dev
->ops
->reset_switch(dev
);
178 enum global_defaults
{
192 static struct switch_attr default_global
[] = {
194 .type
= SWITCH_TYPE_NOVAL
,
196 .description
= "Activate changes in the hardware",
197 .set
= swconfig_apply_config
,
200 .type
= SWITCH_TYPE_NOVAL
,
202 .description
= "Reset the switch",
203 .set
= swconfig_reset_switch
,
207 static struct switch_attr default_port
[] = {
209 .type
= SWITCH_TYPE_INT
,
211 .description
= "Primary VLAN ID",
212 .set
= swconfig_set_pvid
,
213 .get
= swconfig_get_pvid
,
216 .type
= SWITCH_TYPE_LINK
,
218 .description
= "Get port link information",
219 .set
= swconfig_set_link
,
220 .get
= swconfig_get_link
,
224 static struct switch_attr default_vlan
[] = {
226 .type
= SWITCH_TYPE_PORTS
,
228 .description
= "VLAN port mapping",
229 .set
= swconfig_set_vlan_ports
,
230 .get
= swconfig_get_vlan_ports
,
234 static const struct switch_attr
*
235 swconfig_find_attr_by_name(const struct switch_attrlist
*alist
,
240 for (i
= 0; i
< alist
->n_attr
; i
++)
241 if (strcmp(name
, alist
->attr
[i
].name
) == 0)
242 return &alist
->attr
[i
];
247 static void swconfig_defaults_init(struct switch_dev
*dev
)
249 const struct switch_dev_ops
*ops
= dev
->ops
;
255 if (ops
->get_vlan_ports
|| ops
->set_vlan_ports
)
256 set_bit(VLAN_PORTS
, &dev
->def_vlan
);
258 if (ops
->get_port_pvid
|| ops
->set_port_pvid
)
259 set_bit(PORT_PVID
, &dev
->def_port
);
261 if (ops
->get_port_link
&&
262 !swconfig_find_attr_by_name(&ops
->attr_port
, "link"))
263 set_bit(PORT_LINK
, &dev
->def_port
);
265 /* always present, can be no-op */
266 set_bit(GLOBAL_APPLY
, &dev
->def_global
);
267 set_bit(GLOBAL_RESET
, &dev
->def_global
);
271 static struct genl_family switch_fam
= {
272 .id
= GENL_ID_GENERATE
,
276 .maxattr
= SWITCH_ATTR_MAX
,
279 static const struct nla_policy switch_policy
[SWITCH_ATTR_MAX
+1] = {
280 [SWITCH_ATTR_ID
] = { .type
= NLA_U32
},
281 [SWITCH_ATTR_OP_ID
] = { .type
= NLA_U32
},
282 [SWITCH_ATTR_OP_PORT
] = { .type
= NLA_U32
},
283 [SWITCH_ATTR_OP_VLAN
] = { .type
= NLA_U32
},
284 [SWITCH_ATTR_OP_VALUE_INT
] = { .type
= NLA_U32
},
285 [SWITCH_ATTR_OP_VALUE_STR
] = { .type
= NLA_NUL_STRING
},
286 [SWITCH_ATTR_OP_VALUE_PORTS
] = { .type
= NLA_NESTED
},
287 [SWITCH_ATTR_TYPE
] = { .type
= NLA_U32
},
290 static const struct nla_policy port_policy
[SWITCH_PORT_ATTR_MAX
+1] = {
291 [SWITCH_PORT_ID
] = { .type
= NLA_U32
},
292 [SWITCH_PORT_FLAG_TAGGED
] = { .type
= NLA_FLAG
},
295 static struct nla_policy link_policy
[SWITCH_LINK_ATTR_MAX
] = {
296 [SWITCH_LINK_FLAG_DUPLEX
] = { .type
= NLA_FLAG
},
297 [SWITCH_LINK_FLAG_ANEG
] = { .type
= NLA_FLAG
},
298 [SWITCH_LINK_SPEED
] = { .type
= NLA_U32
},
304 spin_lock(&swdevs_lock
);
308 swconfig_unlock(void)
310 spin_unlock(&swdevs_lock
);
313 static struct switch_dev
*
314 swconfig_get_dev(struct genl_info
*info
)
316 struct switch_dev
*dev
= NULL
;
317 struct switch_dev
*p
;
320 if (!info
->attrs
[SWITCH_ATTR_ID
])
323 id
= nla_get_u32(info
->attrs
[SWITCH_ATTR_ID
]);
325 list_for_each_entry(p
, &swdevs
, dev_list
) {
333 mutex_lock(&dev
->sw_mutex
);
335 pr_debug("device %d not found\n", id
);
342 swconfig_put_dev(struct switch_dev
*dev
)
344 mutex_unlock(&dev
->sw_mutex
);
348 swconfig_dump_attr(struct swconfig_callback
*cb
, void *arg
)
350 struct switch_attr
*op
= arg
;
351 struct genl_info
*info
= cb
->info
;
352 struct sk_buff
*msg
= cb
->msg
;
353 int id
= cb
->args
[0];
356 hdr
= genlmsg_put(msg
, info
->snd_portid
, info
->snd_seq
, &switch_fam
,
357 NLM_F_MULTI
, SWITCH_CMD_NEW_ATTR
);
361 if (nla_put_u32(msg
, SWITCH_ATTR_OP_ID
, id
))
362 goto nla_put_failure
;
363 if (nla_put_u32(msg
, SWITCH_ATTR_OP_TYPE
, op
->type
))
364 goto nla_put_failure
;
365 if (nla_put_string(msg
, SWITCH_ATTR_OP_NAME
, op
->name
))
366 goto nla_put_failure
;
368 if (nla_put_string(msg
, SWITCH_ATTR_OP_DESCRIPTION
,
370 goto nla_put_failure
;
372 genlmsg_end(msg
, hdr
);
375 genlmsg_cancel(msg
, hdr
);
379 /* spread multipart messages across multiple message buffers */
381 swconfig_send_multipart(struct swconfig_callback
*cb
, void *arg
)
383 struct genl_info
*info
= cb
->info
;
389 cb
->msg
= nlmsg_new(NLMSG_GOODSIZE
, GFP_KERNEL
);
394 if (!(cb
->fill(cb
, arg
) < 0))
397 /* fill failed, check if this was already the second attempt */
401 /* try again in a new message, send the current one */
404 if (cb
->close(cb
, arg
) < 0)
407 err
= genlmsg_reply(cb
->msg
, info
);
423 swconfig_list_attrs(struct sk_buff
*skb
, struct genl_info
*info
)
425 struct genlmsghdr
*hdr
= nlmsg_data(info
->nlhdr
);
426 const struct switch_attrlist
*alist
;
427 struct switch_dev
*dev
;
428 struct swconfig_callback cb
;
433 struct switch_attr
*def_list
;
434 unsigned long *def_active
;
437 dev
= swconfig_get_dev(info
);
442 case SWITCH_CMD_LIST_GLOBAL
:
443 alist
= &dev
->ops
->attr_global
;
444 def_list
= default_global
;
445 def_active
= &dev
->def_global
;
446 n_def
= ARRAY_SIZE(default_global
);
448 case SWITCH_CMD_LIST_VLAN
:
449 alist
= &dev
->ops
->attr_vlan
;
450 def_list
= default_vlan
;
451 def_active
= &dev
->def_vlan
;
452 n_def
= ARRAY_SIZE(default_vlan
);
454 case SWITCH_CMD_LIST_PORT
:
455 alist
= &dev
->ops
->attr_port
;
456 def_list
= default_port
;
457 def_active
= &dev
->def_port
;
458 n_def
= ARRAY_SIZE(default_port
);
465 memset(&cb
, 0, sizeof(cb
));
467 cb
.fill
= swconfig_dump_attr
;
468 for (i
= 0; i
< alist
->n_attr
; i
++) {
469 if (alist
->attr
[i
].disabled
)
472 err
= swconfig_send_multipart(&cb
, (void *) &alist
->attr
[i
]);
478 for (i
= 0; i
< n_def
; i
++) {
479 if (!test_bit(i
, def_active
))
481 cb
.args
[0] = SWITCH_ATTR_DEFAULTS_OFFSET
+ i
;
482 err
= swconfig_send_multipart(&cb
, (void *) &def_list
[i
]);
486 swconfig_put_dev(dev
);
491 return genlmsg_reply(cb
.msg
, info
);
497 swconfig_put_dev(dev
);
501 static const struct switch_attr
*
502 swconfig_lookup_attr(struct switch_dev
*dev
, struct genl_info
*info
,
503 struct switch_val
*val
)
505 struct genlmsghdr
*hdr
= nlmsg_data(info
->nlhdr
);
506 const struct switch_attrlist
*alist
;
507 const struct switch_attr
*attr
= NULL
;
511 struct switch_attr
*def_list
;
512 unsigned long *def_active
;
515 if (!info
->attrs
[SWITCH_ATTR_OP_ID
])
519 case SWITCH_CMD_SET_GLOBAL
:
520 case SWITCH_CMD_GET_GLOBAL
:
521 alist
= &dev
->ops
->attr_global
;
522 def_list
= default_global
;
523 def_active
= &dev
->def_global
;
524 n_def
= ARRAY_SIZE(default_global
);
526 case SWITCH_CMD_SET_VLAN
:
527 case SWITCH_CMD_GET_VLAN
:
528 alist
= &dev
->ops
->attr_vlan
;
529 def_list
= default_vlan
;
530 def_active
= &dev
->def_vlan
;
531 n_def
= ARRAY_SIZE(default_vlan
);
532 if (!info
->attrs
[SWITCH_ATTR_OP_VLAN
])
534 val
->port_vlan
= nla_get_u32(info
->attrs
[SWITCH_ATTR_OP_VLAN
]);
535 if (val
->port_vlan
>= dev
->vlans
)
538 case SWITCH_CMD_SET_PORT
:
539 case SWITCH_CMD_GET_PORT
:
540 alist
= &dev
->ops
->attr_port
;
541 def_list
= default_port
;
542 def_active
= &dev
->def_port
;
543 n_def
= ARRAY_SIZE(default_port
);
544 if (!info
->attrs
[SWITCH_ATTR_OP_PORT
])
546 val
->port_vlan
= nla_get_u32(info
->attrs
[SWITCH_ATTR_OP_PORT
]);
547 if (val
->port_vlan
>= dev
->ports
)
558 attr_id
= nla_get_u32(info
->attrs
[SWITCH_ATTR_OP_ID
]);
559 if (attr_id
>= SWITCH_ATTR_DEFAULTS_OFFSET
) {
560 attr_id
-= SWITCH_ATTR_DEFAULTS_OFFSET
;
561 if (attr_id
>= n_def
)
563 if (!test_bit(attr_id
, def_active
))
565 attr
= &def_list
[attr_id
];
567 if (attr_id
>= alist
->n_attr
)
569 attr
= &alist
->attr
[attr_id
];
577 pr_debug("attribute lookup failed\n");
583 swconfig_parse_ports(struct sk_buff
*msg
, struct nlattr
*head
,
584 struct switch_val
*val
, int max
)
590 nla_for_each_nested(nla
, head
, rem
) {
591 struct nlattr
*tb
[SWITCH_PORT_ATTR_MAX
+1];
592 struct switch_port
*port
= &val
->value
.ports
[val
->len
];
597 if (nla_parse_nested(tb
, SWITCH_PORT_ATTR_MAX
, nla
,
601 if (!tb
[SWITCH_PORT_ID
])
604 port
->id
= nla_get_u32(tb
[SWITCH_PORT_ID
]);
605 if (tb
[SWITCH_PORT_FLAG_TAGGED
])
606 port
->flags
|= (1 << SWITCH_PORT_FLAG_TAGGED
);
614 swconfig_parse_link(struct sk_buff
*msg
, struct nlattr
*nla
,
615 struct switch_port_link
*link
)
617 struct nlattr
*tb
[SWITCH_LINK_ATTR_MAX
+ 1];
619 if (nla_parse_nested(tb
, SWITCH_LINK_ATTR_MAX
, nla
, link_policy
))
622 link
->duplex
= !!tb
[SWITCH_LINK_FLAG_DUPLEX
];
623 link
->aneg
= !!tb
[SWITCH_LINK_FLAG_ANEG
];
624 link
->speed
= nla_get_u32(tb
[SWITCH_LINK_SPEED
]);
630 swconfig_set_attr(struct sk_buff
*skb
, struct genl_info
*info
)
632 const struct switch_attr
*attr
;
633 struct switch_dev
*dev
;
634 struct switch_val val
;
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");
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 .doit
= swconfig_list_attrs
,
995 .policy
= switch_policy
,
998 .cmd
= SWITCH_CMD_LIST_VLAN
,
999 .doit
= swconfig_list_attrs
,
1000 .policy
= switch_policy
,
1003 .cmd
= SWITCH_CMD_LIST_PORT
,
1004 .doit
= swconfig_list_attrs
,
1005 .policy
= switch_policy
,
1008 .cmd
= SWITCH_CMD_GET_GLOBAL
,
1009 .doit
= swconfig_get_attr
,
1010 .policy
= switch_policy
,
1013 .cmd
= SWITCH_CMD_GET_VLAN
,
1014 .doit
= swconfig_get_attr
,
1015 .policy
= switch_policy
,
1018 .cmd
= SWITCH_CMD_GET_PORT
,
1019 .doit
= swconfig_get_attr
,
1020 .policy
= switch_policy
,
1023 .cmd
= SWITCH_CMD_SET_GLOBAL
,
1024 .doit
= swconfig_set_attr
,
1025 .policy
= switch_policy
,
1028 .cmd
= SWITCH_CMD_SET_VLAN
,
1029 .doit
= swconfig_set_attr
,
1030 .policy
= switch_policy
,
1033 .cmd
= SWITCH_CMD_SET_PORT
,
1034 .doit
= swconfig_set_attr
,
1035 .policy
= switch_policy
,
1038 .cmd
= SWITCH_CMD_GET_SWITCH
,
1039 .dumpit
= swconfig_dump_switches
,
1040 .policy
= switch_policy
,
1041 .done
= swconfig_done
,
1047 of_switch_load_portmap(struct switch_dev
*dev
)
1049 struct device_node
*port
;
1054 for_each_child_of_node(dev
->of_node
, port
) {
1056 const char *segment
;
1059 if (!of_device_is_compatible(port
, "swconfig,port"))
1062 if (of_property_read_string(port
, "swconfig,segment", &segment
))
1065 prop
= of_get_property(port
, "swconfig,portmap", &size
);
1069 if (size
!= (2 * sizeof(*prop
))) {
1070 pr_err("%s: failed to parse port mapping\n",
1075 phys
= be32_to_cpup(prop
++);
1076 if ((phys
< 0) | (phys
>= dev
->ports
)) {
1077 pr_err("%s: physical port index out of range\n",
1082 dev
->portmap
[phys
].s
= kstrdup(segment
, GFP_KERNEL
);
1083 dev
->portmap
[phys
].virt
= be32_to_cpup(prop
);
1084 pr_debug("Found port: %s, physical: %d, virtual: %d\n",
1085 segment
, phys
, dev
->portmap
[phys
].virt
);
1091 register_switch(struct switch_dev
*dev
, struct net_device
*netdev
)
1093 struct switch_dev
*sdev
;
1094 const int max_switches
= 8 * sizeof(unsigned long);
1095 unsigned long in_use
= 0;
1099 INIT_LIST_HEAD(&dev
->dev_list
);
1101 dev
->netdev
= netdev
;
1103 dev
->alias
= netdev
->name
;
1105 BUG_ON(!dev
->alias
);
1107 if (dev
->ports
> 0) {
1108 dev
->portbuf
= kzalloc(sizeof(struct switch_port
) *
1109 dev
->ports
, GFP_KERNEL
);
1112 dev
->portmap
= kzalloc(sizeof(struct switch_portmap
) *
1113 dev
->ports
, GFP_KERNEL
);
1114 if (!dev
->portmap
) {
1115 kfree(dev
->portbuf
);
1119 swconfig_defaults_init(dev
);
1120 mutex_init(&dev
->sw_mutex
);
1122 dev
->id
= ++swdev_id
;
1124 list_for_each_entry(sdev
, &swdevs
, dev_list
) {
1125 if (!sscanf(sdev
->devname
, SWCONFIG_DEVNAME
, &i
))
1127 if (i
< 0 || i
> max_switches
)
1130 set_bit(i
, &in_use
);
1132 i
= find_first_zero_bit(&in_use
, max_switches
);
1134 if (i
== max_switches
) {
1141 of_switch_load_portmap(dev
);
1144 /* fill device name */
1145 snprintf(dev
->devname
, IFNAMSIZ
, SWCONFIG_DEVNAME
, i
);
1147 list_add_tail(&dev
->dev_list
, &swdevs
);
1150 err
= swconfig_create_led_trigger(dev
);
1156 EXPORT_SYMBOL_GPL(register_switch
);
1159 unregister_switch(struct switch_dev
*dev
)
1161 swconfig_destroy_led_trigger(dev
);
1162 kfree(dev
->portbuf
);
1163 mutex_lock(&dev
->sw_mutex
);
1165 list_del(&dev
->dev_list
);
1167 mutex_unlock(&dev
->sw_mutex
);
1169 EXPORT_SYMBOL_GPL(unregister_switch
);
1175 INIT_LIST_HEAD(&swdevs
);
1177 return genl_register_family_with_ops(&switch_fam
, swconfig_ops
);
1183 genl_unregister_family(&switch_fam
);
1186 module_init(swconfig_init
);
1187 module_exit(swconfig_exit
);