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_speed_str(enum switch_port_speed speed
)
134 case SWITCH_PORT_SPEED_10
:
136 case SWITCH_PORT_SPEED_100
:
138 case SWITCH_PORT_SPEED_1000
:
148 swconfig_get_link(struct switch_dev
*dev
, const struct switch_attr
*attr
,
149 struct switch_val
*val
)
151 struct switch_port_link link
;
155 if (val
->port_vlan
>= dev
->ports
)
158 if (!dev
->ops
->get_port_link
)
161 memset(&link
, 0, sizeof(link
));
162 ret
= dev
->ops
->get_port_link(dev
, val
->port_vlan
, &link
);
166 memset(dev
->buf
, 0, sizeof(dev
->buf
));
169 len
= snprintf(dev
->buf
, sizeof(dev
->buf
),
170 "port:%d link:up speed:%s %s-duplex %s%s%s%s%s",
172 swconfig_speed_str(link
.speed
),
173 link
.duplex
? "full" : "half",
174 link
.tx_flow
? "txflow " : "",
175 link
.rx_flow
? "rxflow " : "",
176 link
.eee
& ADVERTISED_100baseT_Full
? "eee100 " : "",
177 link
.eee
& ADVERTISED_1000baseT_Full
? "eee1000 " : "",
178 link
.aneg
? "auto" : "");
180 len
= snprintf(dev
->buf
, sizeof(dev
->buf
), "port:%d link:down",
183 val
->value
.s
= dev
->buf
;
190 swconfig_apply_config(struct switch_dev
*dev
, const struct switch_attr
*attr
,
191 struct switch_val
*val
)
193 /* don't complain if not supported by the switch driver */
194 if (!dev
->ops
->apply_config
)
197 return dev
->ops
->apply_config(dev
);
201 swconfig_reset_switch(struct switch_dev
*dev
, const struct switch_attr
*attr
,
202 struct switch_val
*val
)
204 /* don't complain if not supported by the switch driver */
205 if (!dev
->ops
->reset_switch
)
208 return dev
->ops
->reset_switch(dev
);
211 enum global_defaults
{
225 static struct switch_attr default_global
[] = {
227 .type
= SWITCH_TYPE_NOVAL
,
229 .description
= "Activate changes in the hardware",
230 .set
= swconfig_apply_config
,
233 .type
= SWITCH_TYPE_NOVAL
,
235 .description
= "Reset the switch",
236 .set
= swconfig_reset_switch
,
240 static struct switch_attr default_port
[] = {
242 .type
= SWITCH_TYPE_INT
,
244 .description
= "Primary VLAN ID",
245 .set
= swconfig_set_pvid
,
246 .get
= swconfig_get_pvid
,
249 .type
= SWITCH_TYPE_STRING
,
251 .description
= "Get port link information",
253 .get
= swconfig_get_link
,
257 static struct switch_attr default_vlan
[] = {
259 .type
= SWITCH_TYPE_PORTS
,
261 .description
= "VLAN port mapping",
262 .set
= swconfig_set_vlan_ports
,
263 .get
= swconfig_get_vlan_ports
,
267 static const struct switch_attr
*
268 swconfig_find_attr_by_name(const struct switch_attrlist
*alist
,
273 for (i
= 0; i
< alist
->n_attr
; i
++)
274 if (strcmp(name
, alist
->attr
[i
].name
) == 0)
275 return &alist
->attr
[i
];
280 static void swconfig_defaults_init(struct switch_dev
*dev
)
282 const struct switch_dev_ops
*ops
= dev
->ops
;
288 if (ops
->get_vlan_ports
|| ops
->set_vlan_ports
)
289 set_bit(VLAN_PORTS
, &dev
->def_vlan
);
291 if (ops
->get_port_pvid
|| ops
->set_port_pvid
)
292 set_bit(PORT_PVID
, &dev
->def_port
);
294 if (ops
->get_port_link
&&
295 !swconfig_find_attr_by_name(&ops
->attr_port
, "link"))
296 set_bit(PORT_LINK
, &dev
->def_port
);
298 /* always present, can be no-op */
299 set_bit(GLOBAL_APPLY
, &dev
->def_global
);
300 set_bit(GLOBAL_RESET
, &dev
->def_global
);
304 static struct genl_family switch_fam
= {
305 .id
= GENL_ID_GENERATE
,
309 .maxattr
= SWITCH_ATTR_MAX
,
312 static const struct nla_policy switch_policy
[SWITCH_ATTR_MAX
+1] = {
313 [SWITCH_ATTR_ID
] = { .type
= NLA_U32
},
314 [SWITCH_ATTR_OP_ID
] = { .type
= NLA_U32
},
315 [SWITCH_ATTR_OP_PORT
] = { .type
= NLA_U32
},
316 [SWITCH_ATTR_OP_VLAN
] = { .type
= NLA_U32
},
317 [SWITCH_ATTR_OP_VALUE_INT
] = { .type
= NLA_U32
},
318 [SWITCH_ATTR_OP_VALUE_STR
] = { .type
= NLA_NUL_STRING
},
319 [SWITCH_ATTR_OP_VALUE_PORTS
] = { .type
= NLA_NESTED
},
320 [SWITCH_ATTR_TYPE
] = { .type
= NLA_U32
},
323 static const struct nla_policy port_policy
[SWITCH_PORT_ATTR_MAX
+1] = {
324 [SWITCH_PORT_ID
] = { .type
= NLA_U32
},
325 [SWITCH_PORT_FLAG_TAGGED
] = { .type
= NLA_FLAG
},
331 spin_lock(&swdevs_lock
);
335 swconfig_unlock(void)
337 spin_unlock(&swdevs_lock
);
340 static struct switch_dev
*
341 swconfig_get_dev(struct genl_info
*info
)
343 struct switch_dev
*dev
= NULL
;
344 struct switch_dev
*p
;
347 if (!info
->attrs
[SWITCH_ATTR_ID
])
350 id
= nla_get_u32(info
->attrs
[SWITCH_ATTR_ID
]);
352 list_for_each_entry(p
, &swdevs
, dev_list
) {
360 mutex_lock(&dev
->sw_mutex
);
362 pr_debug("device %d not found\n", id
);
369 swconfig_put_dev(struct switch_dev
*dev
)
371 mutex_unlock(&dev
->sw_mutex
);
375 swconfig_dump_attr(struct swconfig_callback
*cb
, void *arg
)
377 struct switch_attr
*op
= arg
;
378 struct genl_info
*info
= cb
->info
;
379 struct sk_buff
*msg
= cb
->msg
;
380 int id
= cb
->args
[0];
383 hdr
= genlmsg_put(msg
, info
->snd_portid
, info
->snd_seq
, &switch_fam
,
384 NLM_F_MULTI
, SWITCH_CMD_NEW_ATTR
);
388 if (nla_put_u32(msg
, SWITCH_ATTR_OP_ID
, id
))
389 goto nla_put_failure
;
390 if (nla_put_u32(msg
, SWITCH_ATTR_OP_TYPE
, op
->type
))
391 goto nla_put_failure
;
392 if (nla_put_string(msg
, SWITCH_ATTR_OP_NAME
, op
->name
))
393 goto nla_put_failure
;
395 if (nla_put_string(msg
, SWITCH_ATTR_OP_DESCRIPTION
,
397 goto nla_put_failure
;
399 genlmsg_end(msg
, hdr
);
402 genlmsg_cancel(msg
, hdr
);
406 /* spread multipart messages across multiple message buffers */
408 swconfig_send_multipart(struct swconfig_callback
*cb
, void *arg
)
410 struct genl_info
*info
= cb
->info
;
416 cb
->msg
= nlmsg_new(NLMSG_GOODSIZE
, GFP_KERNEL
);
421 if (!(cb
->fill(cb
, arg
) < 0))
424 /* fill failed, check if this was already the second attempt */
428 /* try again in a new message, send the current one */
431 if (cb
->close(cb
, arg
) < 0)
434 err
= genlmsg_reply(cb
->msg
, info
);
450 swconfig_list_attrs(struct sk_buff
*skb
, struct genl_info
*info
)
452 struct genlmsghdr
*hdr
= nlmsg_data(info
->nlhdr
);
453 const struct switch_attrlist
*alist
;
454 struct switch_dev
*dev
;
455 struct swconfig_callback cb
;
460 struct switch_attr
*def_list
;
461 unsigned long *def_active
;
464 dev
= swconfig_get_dev(info
);
469 case SWITCH_CMD_LIST_GLOBAL
:
470 alist
= &dev
->ops
->attr_global
;
471 def_list
= default_global
;
472 def_active
= &dev
->def_global
;
473 n_def
= ARRAY_SIZE(default_global
);
475 case SWITCH_CMD_LIST_VLAN
:
476 alist
= &dev
->ops
->attr_vlan
;
477 def_list
= default_vlan
;
478 def_active
= &dev
->def_vlan
;
479 n_def
= ARRAY_SIZE(default_vlan
);
481 case SWITCH_CMD_LIST_PORT
:
482 alist
= &dev
->ops
->attr_port
;
483 def_list
= default_port
;
484 def_active
= &dev
->def_port
;
485 n_def
= ARRAY_SIZE(default_port
);
492 memset(&cb
, 0, sizeof(cb
));
494 cb
.fill
= swconfig_dump_attr
;
495 for (i
= 0; i
< alist
->n_attr
; i
++) {
496 if (alist
->attr
[i
].disabled
)
499 err
= swconfig_send_multipart(&cb
, (void *) &alist
->attr
[i
]);
505 for (i
= 0; i
< n_def
; i
++) {
506 if (!test_bit(i
, def_active
))
508 cb
.args
[0] = SWITCH_ATTR_DEFAULTS_OFFSET
+ i
;
509 err
= swconfig_send_multipart(&cb
, (void *) &def_list
[i
]);
513 swconfig_put_dev(dev
);
518 return genlmsg_reply(cb
.msg
, info
);
524 swconfig_put_dev(dev
);
528 static const struct switch_attr
*
529 swconfig_lookup_attr(struct switch_dev
*dev
, struct genl_info
*info
,
530 struct switch_val
*val
)
532 struct genlmsghdr
*hdr
= nlmsg_data(info
->nlhdr
);
533 const struct switch_attrlist
*alist
;
534 const struct switch_attr
*attr
= NULL
;
538 struct switch_attr
*def_list
;
539 unsigned long *def_active
;
542 if (!info
->attrs
[SWITCH_ATTR_OP_ID
])
546 case SWITCH_CMD_SET_GLOBAL
:
547 case SWITCH_CMD_GET_GLOBAL
:
548 alist
= &dev
->ops
->attr_global
;
549 def_list
= default_global
;
550 def_active
= &dev
->def_global
;
551 n_def
= ARRAY_SIZE(default_global
);
553 case SWITCH_CMD_SET_VLAN
:
554 case SWITCH_CMD_GET_VLAN
:
555 alist
= &dev
->ops
->attr_vlan
;
556 def_list
= default_vlan
;
557 def_active
= &dev
->def_vlan
;
558 n_def
= ARRAY_SIZE(default_vlan
);
559 if (!info
->attrs
[SWITCH_ATTR_OP_VLAN
])
561 val
->port_vlan
= nla_get_u32(info
->attrs
[SWITCH_ATTR_OP_VLAN
]);
562 if (val
->port_vlan
>= dev
->vlans
)
565 case SWITCH_CMD_SET_PORT
:
566 case SWITCH_CMD_GET_PORT
:
567 alist
= &dev
->ops
->attr_port
;
568 def_list
= default_port
;
569 def_active
= &dev
->def_port
;
570 n_def
= ARRAY_SIZE(default_port
);
571 if (!info
->attrs
[SWITCH_ATTR_OP_PORT
])
573 val
->port_vlan
= nla_get_u32(info
->attrs
[SWITCH_ATTR_OP_PORT
]);
574 if (val
->port_vlan
>= dev
->ports
)
585 attr_id
= nla_get_u32(info
->attrs
[SWITCH_ATTR_OP_ID
]);
586 if (attr_id
>= SWITCH_ATTR_DEFAULTS_OFFSET
) {
587 attr_id
-= SWITCH_ATTR_DEFAULTS_OFFSET
;
588 if (attr_id
>= n_def
)
590 if (!test_bit(attr_id
, def_active
))
592 attr
= &def_list
[attr_id
];
594 if (attr_id
>= alist
->n_attr
)
596 attr
= &alist
->attr
[attr_id
];
604 pr_debug("attribute lookup failed\n");
610 swconfig_parse_ports(struct sk_buff
*msg
, struct nlattr
*head
,
611 struct switch_val
*val
, int max
)
617 nla_for_each_nested(nla
, head
, rem
) {
618 struct nlattr
*tb
[SWITCH_PORT_ATTR_MAX
+1];
619 struct switch_port
*port
= &val
->value
.ports
[val
->len
];
624 if (nla_parse_nested(tb
, SWITCH_PORT_ATTR_MAX
, nla
,
628 if (!tb
[SWITCH_PORT_ID
])
631 port
->id
= nla_get_u32(tb
[SWITCH_PORT_ID
]);
632 if (tb
[SWITCH_PORT_FLAG_TAGGED
])
633 port
->flags
|= (1 << SWITCH_PORT_FLAG_TAGGED
);
641 swconfig_set_attr(struct sk_buff
*skb
, struct genl_info
*info
)
643 const struct switch_attr
*attr
;
644 struct switch_dev
*dev
;
645 struct switch_val val
;
648 dev
= swconfig_get_dev(info
);
652 memset(&val
, 0, sizeof(val
));
653 attr
= swconfig_lookup_attr(dev
, info
, &val
);
654 if (!attr
|| !attr
->set
)
658 switch (attr
->type
) {
659 case SWITCH_TYPE_NOVAL
:
661 case SWITCH_TYPE_INT
:
662 if (!info
->attrs
[SWITCH_ATTR_OP_VALUE_INT
])
665 nla_get_u32(info
->attrs
[SWITCH_ATTR_OP_VALUE_INT
]);
667 case SWITCH_TYPE_STRING
:
668 if (!info
->attrs
[SWITCH_ATTR_OP_VALUE_STR
])
671 nla_data(info
->attrs
[SWITCH_ATTR_OP_VALUE_STR
]);
673 case SWITCH_TYPE_PORTS
:
674 val
.value
.ports
= dev
->portbuf
;
675 memset(dev
->portbuf
, 0,
676 sizeof(struct switch_port
) * dev
->ports
);
678 /* TODO: implement multipart? */
679 if (info
->attrs
[SWITCH_ATTR_OP_VALUE_PORTS
]) {
680 err
= swconfig_parse_ports(skb
,
681 info
->attrs
[SWITCH_ATTR_OP_VALUE_PORTS
],
694 err
= attr
->set(dev
, attr
, &val
);
696 swconfig_put_dev(dev
);
701 swconfig_close_portlist(struct swconfig_callback
*cb
, void *arg
)
704 nla_nest_end(cb
->msg
, cb
->nest
[0]);
709 swconfig_send_port(struct swconfig_callback
*cb
, void *arg
)
711 const struct switch_port
*port
= arg
;
712 struct nlattr
*p
= NULL
;
715 cb
->nest
[0] = nla_nest_start(cb
->msg
, cb
->cmd
);
720 p
= nla_nest_start(cb
->msg
, SWITCH_ATTR_PORT
);
724 if (nla_put_u32(cb
->msg
, SWITCH_PORT_ID
, port
->id
))
725 goto nla_put_failure
;
726 if (port
->flags
& (1 << SWITCH_PORT_FLAG_TAGGED
)) {
727 if (nla_put_flag(cb
->msg
, SWITCH_PORT_FLAG_TAGGED
))
728 goto nla_put_failure
;
731 nla_nest_end(cb
->msg
, p
);
735 nla_nest_cancel(cb
->msg
, p
);
737 nla_nest_cancel(cb
->msg
, cb
->nest
[0]);
742 swconfig_send_ports(struct sk_buff
**msg
, struct genl_info
*info
, int attr
,
743 const struct switch_val
*val
)
745 struct swconfig_callback cb
;
749 if (!val
->value
.ports
)
752 memset(&cb
, 0, sizeof(cb
));
756 cb
.fill
= swconfig_send_port
;
757 cb
.close
= swconfig_close_portlist
;
759 cb
.nest
[0] = nla_nest_start(cb
.msg
, cb
.cmd
);
760 for (i
= 0; i
< val
->len
; i
++) {
761 err
= swconfig_send_multipart(&cb
, &val
->value
.ports
[i
]);
766 swconfig_close_portlist(&cb
, NULL
);
774 swconfig_send_link(struct sk_buff
*msg
, struct genl_info
*info
, int attr
,
775 const struct switch_port_link
*link
)
777 struct nlattr
*p
= NULL
;
780 p
= nla_nest_start(msg
, attr
);
782 if (nla_put_flag(msg
, SWITCH_LINK_FLAG_LINK
))
783 goto nla_put_failure
;
786 if (nla_put_flag(msg
, SWITCH_LINK_FLAG_DUPLEX
))
787 goto nla_put_failure
;
790 if (nla_put_flag(msg
, SWITCH_LINK_FLAG_ANEG
))
791 goto nla_put_failure
;
794 if (nla_put_flag(msg
, SWITCH_LINK_FLAG_TX_FLOW
))
795 goto nla_put_failure
;
798 if (nla_put_flag(msg
, SWITCH_LINK_FLAG_RX_FLOW
))
799 goto nla_put_failure
;
801 if (nla_put_u32(msg
, SWITCH_LINK_SPEED
, link
->speed
))
802 goto nla_put_failure
;
803 if (link
->eee
& ADVERTISED_100baseT_Full
) {
804 if (nla_put_flag(msg
, SWITCH_LINK_FLAG_EEE_100BASET
))
805 goto nla_put_failure
;
807 if (link
->eee
& ADVERTISED_1000baseT_Full
) {
808 if (nla_put_flag(msg
, SWITCH_LINK_FLAG_EEE_1000BASET
))
809 goto nla_put_failure
;
811 nla_nest_end(msg
, p
);
816 nla_nest_cancel(msg
, p
);
821 swconfig_get_attr(struct sk_buff
*skb
, struct genl_info
*info
)
823 struct genlmsghdr
*hdr
= nlmsg_data(info
->nlhdr
);
824 const struct switch_attr
*attr
;
825 struct switch_dev
*dev
;
826 struct sk_buff
*msg
= NULL
;
827 struct switch_val val
;
831 dev
= swconfig_get_dev(info
);
835 memset(&val
, 0, sizeof(val
));
836 attr
= swconfig_lookup_attr(dev
, info
, &val
);
837 if (!attr
|| !attr
->get
)
840 if (attr
->type
== SWITCH_TYPE_PORTS
) {
841 val
.value
.ports
= dev
->portbuf
;
842 memset(dev
->portbuf
, 0,
843 sizeof(struct switch_port
) * dev
->ports
);
844 } else if (attr
->type
== SWITCH_TYPE_LINK
) {
845 val
.value
.link
= &dev
->linkbuf
;
846 memset(&dev
->linkbuf
, 0, sizeof(struct switch_port_link
));
849 err
= attr
->get(dev
, attr
, &val
);
853 msg
= nlmsg_new(NLMSG_GOODSIZE
, GFP_KERNEL
);
857 hdr
= genlmsg_put(msg
, info
->snd_portid
, info
->snd_seq
, &switch_fam
,
860 goto nla_put_failure
;
862 switch (attr
->type
) {
863 case SWITCH_TYPE_INT
:
864 if (nla_put_u32(msg
, SWITCH_ATTR_OP_VALUE_INT
, val
.value
.i
))
865 goto nla_put_failure
;
867 case SWITCH_TYPE_STRING
:
868 if (nla_put_string(msg
, SWITCH_ATTR_OP_VALUE_STR
, val
.value
.s
))
869 goto nla_put_failure
;
871 case SWITCH_TYPE_PORTS
:
872 err
= swconfig_send_ports(&msg
, info
,
873 SWITCH_ATTR_OP_VALUE_PORTS
, &val
);
875 goto nla_put_failure
;
877 case SWITCH_TYPE_LINK
:
878 err
= swconfig_send_link(msg
, info
,
879 SWITCH_ATTR_OP_VALUE_LINK
, val
.value
.link
);
881 goto nla_put_failure
;
884 pr_debug("invalid type in attribute\n");
888 genlmsg_end(msg
, hdr
);
891 goto nla_put_failure
;
893 swconfig_put_dev(dev
);
894 return genlmsg_reply(msg
, info
);
900 swconfig_put_dev(dev
);
907 swconfig_send_switch(struct sk_buff
*msg
, u32 pid
, u32 seq
, int flags
,
908 const struct switch_dev
*dev
)
910 struct nlattr
*p
= NULL
, *m
= NULL
;
914 hdr
= genlmsg_put(msg
, pid
, seq
, &switch_fam
, flags
,
915 SWITCH_CMD_NEW_ATTR
);
919 if (nla_put_u32(msg
, SWITCH_ATTR_ID
, dev
->id
))
920 goto nla_put_failure
;
921 if (nla_put_string(msg
, SWITCH_ATTR_DEV_NAME
, dev
->devname
))
922 goto nla_put_failure
;
923 if (nla_put_string(msg
, SWITCH_ATTR_ALIAS
, dev
->alias
))
924 goto nla_put_failure
;
925 if (nla_put_string(msg
, SWITCH_ATTR_NAME
, dev
->name
))
926 goto nla_put_failure
;
927 if (nla_put_u32(msg
, SWITCH_ATTR_VLANS
, dev
->vlans
))
928 goto nla_put_failure
;
929 if (nla_put_u32(msg
, SWITCH_ATTR_PORTS
, dev
->ports
))
930 goto nla_put_failure
;
931 if (nla_put_u32(msg
, SWITCH_ATTR_CPU_PORT
, dev
->cpu_port
))
932 goto nla_put_failure
;
934 m
= nla_nest_start(msg
, SWITCH_ATTR_PORTMAP
);
936 goto nla_put_failure
;
937 for (i
= 0; i
< dev
->ports
; i
++) {
938 p
= nla_nest_start(msg
, SWITCH_ATTR_PORTS
);
941 if (dev
->portmap
[i
].s
) {
942 if (nla_put_string(msg
, SWITCH_PORTMAP_SEGMENT
,
944 goto nla_put_failure
;
945 if (nla_put_u32(msg
, SWITCH_PORTMAP_VIRT
,
946 dev
->portmap
[i
].virt
))
947 goto nla_put_failure
;
949 nla_nest_end(msg
, p
);
951 nla_nest_end(msg
, m
);
952 genlmsg_end(msg
, hdr
);
955 genlmsg_cancel(msg
, hdr
);
959 static int swconfig_dump_switches(struct sk_buff
*skb
,
960 struct netlink_callback
*cb
)
962 struct switch_dev
*dev
;
963 int start
= cb
->args
[0];
967 list_for_each_entry(dev
, &swdevs
, dev_list
) {
970 if (swconfig_send_switch(skb
, NETLINK_CB(cb
->skb
).portid
,
971 cb
->nlh
->nlmsg_seq
, NLM_F_MULTI
,
982 swconfig_done(struct netlink_callback
*cb
)
987 static struct genl_ops swconfig_ops
[] = {
989 .cmd
= SWITCH_CMD_LIST_GLOBAL
,
990 .doit
= swconfig_list_attrs
,
991 .policy
= switch_policy
,
994 .cmd
= SWITCH_CMD_LIST_VLAN
,
995 .doit
= swconfig_list_attrs
,
996 .policy
= switch_policy
,
999 .cmd
= SWITCH_CMD_LIST_PORT
,
1000 .doit
= swconfig_list_attrs
,
1001 .policy
= switch_policy
,
1004 .cmd
= SWITCH_CMD_GET_GLOBAL
,
1005 .doit
= swconfig_get_attr
,
1006 .policy
= switch_policy
,
1009 .cmd
= SWITCH_CMD_GET_VLAN
,
1010 .doit
= swconfig_get_attr
,
1011 .policy
= switch_policy
,
1014 .cmd
= SWITCH_CMD_GET_PORT
,
1015 .doit
= swconfig_get_attr
,
1016 .policy
= switch_policy
,
1019 .cmd
= SWITCH_CMD_SET_GLOBAL
,
1020 .doit
= swconfig_set_attr
,
1021 .policy
= switch_policy
,
1024 .cmd
= SWITCH_CMD_SET_VLAN
,
1025 .doit
= swconfig_set_attr
,
1026 .policy
= switch_policy
,
1029 .cmd
= SWITCH_CMD_SET_PORT
,
1030 .doit
= swconfig_set_attr
,
1031 .policy
= switch_policy
,
1034 .cmd
= SWITCH_CMD_GET_SWITCH
,
1035 .dumpit
= swconfig_dump_switches
,
1036 .policy
= switch_policy
,
1037 .done
= swconfig_done
,
1043 of_switch_load_portmap(struct switch_dev
*dev
)
1045 struct device_node
*port
;
1050 for_each_child_of_node(dev
->of_node
, port
) {
1052 const char *segment
;
1055 if (!of_device_is_compatible(port
, "swconfig,port"))
1058 if (of_property_read_string(port
, "swconfig,segment", &segment
))
1061 prop
= of_get_property(port
, "swconfig,portmap", &size
);
1065 if (size
!= (2 * sizeof(*prop
))) {
1066 pr_err("%s: failed to parse port mapping\n",
1071 phys
= be32_to_cpup(prop
++);
1072 if ((phys
< 0) | (phys
>= dev
->ports
)) {
1073 pr_err("%s: physical port index out of range\n",
1078 dev
->portmap
[phys
].s
= kstrdup(segment
, GFP_KERNEL
);
1079 dev
->portmap
[phys
].virt
= be32_to_cpup(prop
);
1080 pr_debug("Found port: %s, physical: %d, virtual: %d\n",
1081 segment
, phys
, dev
->portmap
[phys
].virt
);
1087 register_switch(struct switch_dev
*dev
, struct net_device
*netdev
)
1089 struct switch_dev
*sdev
;
1090 const int max_switches
= 8 * sizeof(unsigned long);
1091 unsigned long in_use
= 0;
1095 INIT_LIST_HEAD(&dev
->dev_list
);
1097 dev
->netdev
= netdev
;
1099 dev
->alias
= netdev
->name
;
1101 BUG_ON(!dev
->alias
);
1103 if (dev
->ports
> 0) {
1104 dev
->portbuf
= kzalloc(sizeof(struct switch_port
) *
1105 dev
->ports
, GFP_KERNEL
);
1108 dev
->portmap
= kzalloc(sizeof(struct switch_portmap
) *
1109 dev
->ports
, GFP_KERNEL
);
1110 if (!dev
->portmap
) {
1111 kfree(dev
->portbuf
);
1115 swconfig_defaults_init(dev
);
1116 mutex_init(&dev
->sw_mutex
);
1118 dev
->id
= ++swdev_id
;
1120 list_for_each_entry(sdev
, &swdevs
, dev_list
) {
1121 if (!sscanf(sdev
->devname
, SWCONFIG_DEVNAME
, &i
))
1123 if (i
< 0 || i
> max_switches
)
1126 set_bit(i
, &in_use
);
1128 i
= find_first_zero_bit(&in_use
, max_switches
);
1130 if (i
== max_switches
) {
1137 of_switch_load_portmap(dev
);
1140 /* fill device name */
1141 snprintf(dev
->devname
, IFNAMSIZ
, SWCONFIG_DEVNAME
, i
);
1143 list_add_tail(&dev
->dev_list
, &swdevs
);
1146 err
= swconfig_create_led_trigger(dev
);
1152 EXPORT_SYMBOL_GPL(register_switch
);
1155 unregister_switch(struct switch_dev
*dev
)
1157 swconfig_destroy_led_trigger(dev
);
1158 kfree(dev
->portbuf
);
1159 mutex_lock(&dev
->sw_mutex
);
1161 list_del(&dev
->dev_list
);
1163 mutex_unlock(&dev
->sw_mutex
);
1165 EXPORT_SYMBOL_GPL(unregister_switch
);
1172 #if (LINUX_VERSION_CODE < KERNEL_VERSION(3,13,0))
1176 INIT_LIST_HEAD(&swdevs
);
1178 #if (LINUX_VERSION_CODE < KERNEL_VERSION(3,13,0))
1179 err
= genl_register_family(&switch_fam
);
1183 for (i
= 0; i
< ARRAY_SIZE(swconfig_ops
); i
++) {
1184 err
= genl_register_ops(&switch_fam
, &swconfig_ops
[i
]);
1191 genl_unregister_family(&switch_fam
);
1194 err
= genl_register_family_with_ops(&switch_fam
, swconfig_ops
);
1204 genl_unregister_family(&switch_fam
);
1207 module_init(swconfig_init
);
1208 module_exit(swconfig_exit
);