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",
172 swconfig_speed_str(link.speed),
173 link.duplex ? "full" : "half",
174 link.tx_flow ? "txflow " : "",
175 link.rx_flow ? "rxflow " : "",
176 link.aneg ? "auto" : "");
178 len = snprintf(dev->buf, sizeof(dev->buf), "port:%d link:down",
181 val->value.s = dev->buf;
188 swconfig_apply_config(struct switch_dev *dev, const struct switch_attr *attr,
189 struct switch_val *val)
191 /* don't complain if not supported by the switch driver */
192 if (!dev->ops->apply_config)
195 return dev->ops->apply_config(dev);
199 swconfig_reset_switch(struct switch_dev *dev, const struct switch_attr *attr,
200 struct switch_val *val)
202 /* don't complain if not supported by the switch driver */
203 if (!dev->ops->reset_switch)
206 return dev->ops->reset_switch(dev);
209 enum global_defaults {
223 static struct switch_attr default_global[] = {
225 .type = SWITCH_TYPE_NOVAL,
227 .description = "Activate changes in the hardware",
228 .set = swconfig_apply_config,
231 .type = SWITCH_TYPE_NOVAL,
233 .description = "Reset the switch",
234 .set = swconfig_reset_switch,
238 static struct switch_attr default_port[] = {
240 .type = SWITCH_TYPE_INT,
242 .description = "Primary VLAN ID",
243 .set = swconfig_set_pvid,
244 .get = swconfig_get_pvid,
247 .type = SWITCH_TYPE_STRING,
249 .description = "Get port link information",
251 .get = swconfig_get_link,
255 static struct switch_attr default_vlan[] = {
257 .type = SWITCH_TYPE_PORTS,
259 .description = "VLAN port mapping",
260 .set = swconfig_set_vlan_ports,
261 .get = swconfig_get_vlan_ports,
265 static const struct switch_attr *
266 swconfig_find_attr_by_name(const struct switch_attrlist *alist,
271 for (i = 0; i < alist->n_attr; i++)
272 if (strcmp(name, alist->attr[i].name) == 0)
273 return &alist->attr[i];
278 static void swconfig_defaults_init(struct switch_dev *dev)
280 const struct switch_dev_ops *ops = dev->ops;
286 if (ops->get_vlan_ports || ops->set_vlan_ports)
287 set_bit(VLAN_PORTS, &dev->def_vlan);
289 if (ops->get_port_pvid || ops->set_port_pvid)
290 set_bit(PORT_PVID, &dev->def_port);
292 if (ops->get_port_link &&
293 !swconfig_find_attr_by_name(&ops->attr_port, "link"))
294 set_bit(PORT_LINK, &dev->def_port);
296 /* always present, can be no-op */
297 set_bit(GLOBAL_APPLY, &dev->def_global);
298 set_bit(GLOBAL_RESET, &dev->def_global);
302 static struct genl_family switch_fam = {
303 .id = GENL_ID_GENERATE,
307 .maxattr = SWITCH_ATTR_MAX,
310 static const struct nla_policy switch_policy[SWITCH_ATTR_MAX+1] = {
311 [SWITCH_ATTR_ID] = { .type = NLA_U32 },
312 [SWITCH_ATTR_OP_ID] = { .type = NLA_U32 },
313 [SWITCH_ATTR_OP_PORT] = { .type = NLA_U32 },
314 [SWITCH_ATTR_OP_VLAN] = { .type = NLA_U32 },
315 [SWITCH_ATTR_OP_VALUE_INT] = { .type = NLA_U32 },
316 [SWITCH_ATTR_OP_VALUE_STR] = { .type = NLA_NUL_STRING },
317 [SWITCH_ATTR_OP_VALUE_PORTS] = { .type = NLA_NESTED },
318 [SWITCH_ATTR_TYPE] = { .type = NLA_U32 },
321 static const struct nla_policy port_policy[SWITCH_PORT_ATTR_MAX+1] = {
322 [SWITCH_PORT_ID] = { .type = NLA_U32 },
323 [SWITCH_PORT_FLAG_TAGGED] = { .type = NLA_FLAG },
329 spin_lock(&swdevs_lock);
333 swconfig_unlock(void)
335 spin_unlock(&swdevs_lock);
338 static struct switch_dev *
339 swconfig_get_dev(struct genl_info *info)
341 struct switch_dev *dev = NULL;
342 struct switch_dev *p;
345 if (!info->attrs[SWITCH_ATTR_ID])
348 id = nla_get_u32(info->attrs[SWITCH_ATTR_ID]);
350 list_for_each_entry(p, &swdevs, dev_list) {
358 mutex_lock(&dev->sw_mutex);
360 pr_debug("device %d not found\n", id);
367 swconfig_put_dev(struct switch_dev *dev)
369 mutex_unlock(&dev->sw_mutex);
373 swconfig_dump_attr(struct swconfig_callback *cb, void *arg)
375 struct switch_attr *op = arg;
376 struct genl_info *info = cb->info;
377 struct sk_buff *msg = cb->msg;
378 int id = cb->args[0];
381 hdr = genlmsg_put(msg, info->snd_portid, info->snd_seq, &switch_fam,
382 NLM_F_MULTI, SWITCH_CMD_NEW_ATTR);
386 if (nla_put_u32(msg, SWITCH_ATTR_OP_ID, id))
387 goto nla_put_failure;
388 if (nla_put_u32(msg, SWITCH_ATTR_OP_TYPE, op->type))
389 goto nla_put_failure;
390 if (nla_put_string(msg, SWITCH_ATTR_OP_NAME, op->name))
391 goto nla_put_failure;
393 if (nla_put_string(msg, SWITCH_ATTR_OP_DESCRIPTION,
395 goto nla_put_failure;
397 return genlmsg_end(msg, hdr);
399 genlmsg_cancel(msg, hdr);
403 /* spread multipart messages across multiple message buffers */
405 swconfig_send_multipart(struct swconfig_callback *cb, void *arg)
407 struct genl_info *info = cb->info;
413 cb->msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
418 if (!(cb->fill(cb, arg) < 0))
421 /* fill failed, check if this was already the second attempt */
425 /* try again in a new message, send the current one */
428 if (cb->close(cb, arg) < 0)
431 err = genlmsg_reply(cb->msg, info);
447 swconfig_list_attrs(struct sk_buff *skb, struct genl_info *info)
449 struct genlmsghdr *hdr = nlmsg_data(info->nlhdr);
450 const struct switch_attrlist *alist;
451 struct switch_dev *dev;
452 struct swconfig_callback cb;
457 struct switch_attr *def_list;
458 unsigned long *def_active;
461 dev = swconfig_get_dev(info);
466 case SWITCH_CMD_LIST_GLOBAL:
467 alist = &dev->ops->attr_global;
468 def_list = default_global;
469 def_active = &dev->def_global;
470 n_def = ARRAY_SIZE(default_global);
472 case SWITCH_CMD_LIST_VLAN:
473 alist = &dev->ops->attr_vlan;
474 def_list = default_vlan;
475 def_active = &dev->def_vlan;
476 n_def = ARRAY_SIZE(default_vlan);
478 case SWITCH_CMD_LIST_PORT:
479 alist = &dev->ops->attr_port;
480 def_list = default_port;
481 def_active = &dev->def_port;
482 n_def = ARRAY_SIZE(default_port);
489 memset(&cb, 0, sizeof(cb));
491 cb.fill = swconfig_dump_attr;
492 for (i = 0; i < alist->n_attr; i++) {
493 if (alist->attr[i].disabled)
496 err = swconfig_send_multipart(&cb, (void *) &alist->attr[i]);
502 for (i = 0; i < n_def; i++) {
503 if (!test_bit(i, def_active))
505 cb.args[0] = SWITCH_ATTR_DEFAULTS_OFFSET + i;
506 err = swconfig_send_multipart(&cb, (void *) &def_list[i]);
510 swconfig_put_dev(dev);
515 return genlmsg_reply(cb.msg, info);
521 swconfig_put_dev(dev);
525 static const struct switch_attr *
526 swconfig_lookup_attr(struct switch_dev *dev, struct genl_info *info,
527 struct switch_val *val)
529 struct genlmsghdr *hdr = nlmsg_data(info->nlhdr);
530 const struct switch_attrlist *alist;
531 const struct switch_attr *attr = NULL;
535 struct switch_attr *def_list;
536 unsigned long *def_active;
539 if (!info->attrs[SWITCH_ATTR_OP_ID])
543 case SWITCH_CMD_SET_GLOBAL:
544 case SWITCH_CMD_GET_GLOBAL:
545 alist = &dev->ops->attr_global;
546 def_list = default_global;
547 def_active = &dev->def_global;
548 n_def = ARRAY_SIZE(default_global);
550 case SWITCH_CMD_SET_VLAN:
551 case SWITCH_CMD_GET_VLAN:
552 alist = &dev->ops->attr_vlan;
553 def_list = default_vlan;
554 def_active = &dev->def_vlan;
555 n_def = ARRAY_SIZE(default_vlan);
556 if (!info->attrs[SWITCH_ATTR_OP_VLAN])
558 val->port_vlan = nla_get_u32(info->attrs[SWITCH_ATTR_OP_VLAN]);
559 if (val->port_vlan >= dev->vlans)
562 case SWITCH_CMD_SET_PORT:
563 case SWITCH_CMD_GET_PORT:
564 alist = &dev->ops->attr_port;
565 def_list = default_port;
566 def_active = &dev->def_port;
567 n_def = ARRAY_SIZE(default_port);
568 if (!info->attrs[SWITCH_ATTR_OP_PORT])
570 val->port_vlan = nla_get_u32(info->attrs[SWITCH_ATTR_OP_PORT]);
571 if (val->port_vlan >= dev->ports)
582 attr_id = nla_get_u32(info->attrs[SWITCH_ATTR_OP_ID]);
583 if (attr_id >= SWITCH_ATTR_DEFAULTS_OFFSET) {
584 attr_id -= SWITCH_ATTR_DEFAULTS_OFFSET;
585 if (attr_id >= n_def)
587 if (!test_bit(attr_id, def_active))
589 attr = &def_list[attr_id];
591 if (attr_id >= alist->n_attr)
593 attr = &alist->attr[attr_id];
601 pr_debug("attribute lookup failed\n");
607 swconfig_parse_ports(struct sk_buff *msg, struct nlattr *head,
608 struct switch_val *val, int max)
614 nla_for_each_nested(nla, head, rem) {
615 struct nlattr *tb[SWITCH_PORT_ATTR_MAX+1];
616 struct switch_port *port = &val->value.ports[val->len];
621 if (nla_parse_nested(tb, SWITCH_PORT_ATTR_MAX, nla,
625 if (!tb[SWITCH_PORT_ID])
628 port->id = nla_get_u32(tb[SWITCH_PORT_ID]);
629 if (tb[SWITCH_PORT_FLAG_TAGGED])
630 port->flags |= (1 << SWITCH_PORT_FLAG_TAGGED);
638 swconfig_set_attr(struct sk_buff *skb, struct genl_info *info)
640 const struct switch_attr *attr;
641 struct switch_dev *dev;
642 struct switch_val val;
645 dev = swconfig_get_dev(info);
649 memset(&val, 0, sizeof(val));
650 attr = swconfig_lookup_attr(dev, info, &val);
651 if (!attr || !attr->set)
655 switch (attr->type) {
656 case SWITCH_TYPE_NOVAL:
658 case SWITCH_TYPE_INT:
659 if (!info->attrs[SWITCH_ATTR_OP_VALUE_INT])
662 nla_get_u32(info->attrs[SWITCH_ATTR_OP_VALUE_INT]);
664 case SWITCH_TYPE_STRING:
665 if (!info->attrs[SWITCH_ATTR_OP_VALUE_STR])
668 nla_data(info->attrs[SWITCH_ATTR_OP_VALUE_STR]);
670 case SWITCH_TYPE_PORTS:
671 val.value.ports = dev->portbuf;
672 memset(dev->portbuf, 0,
673 sizeof(struct switch_port) * dev->ports);
675 /* TODO: implement multipart? */
676 if (info->attrs[SWITCH_ATTR_OP_VALUE_PORTS]) {
677 err = swconfig_parse_ports(skb,
678 info->attrs[SWITCH_ATTR_OP_VALUE_PORTS],
691 err = attr->set(dev, attr, &val);
693 swconfig_put_dev(dev);
698 swconfig_close_portlist(struct swconfig_callback *cb, void *arg)
701 nla_nest_end(cb->msg, cb->nest[0]);
706 swconfig_send_port(struct swconfig_callback *cb, void *arg)
708 const struct switch_port *port = arg;
709 struct nlattr *p = NULL;
712 cb->nest[0] = nla_nest_start(cb->msg, cb->cmd);
717 p = nla_nest_start(cb->msg, SWITCH_ATTR_PORT);
721 if (nla_put_u32(cb->msg, SWITCH_PORT_ID, port->id))
722 goto nla_put_failure;
723 if (port->flags & (1 << SWITCH_PORT_FLAG_TAGGED)) {
724 if (nla_put_flag(cb->msg, SWITCH_PORT_FLAG_TAGGED))
725 goto nla_put_failure;
728 nla_nest_end(cb->msg, p);
732 nla_nest_cancel(cb->msg, p);
734 nla_nest_cancel(cb->msg, cb->nest[0]);
739 swconfig_send_ports(struct sk_buff **msg, struct genl_info *info, int attr,
740 const struct switch_val *val)
742 struct swconfig_callback cb;
746 if (!val->value.ports)
749 memset(&cb, 0, sizeof(cb));
753 cb.fill = swconfig_send_port;
754 cb.close = swconfig_close_portlist;
756 cb.nest[0] = nla_nest_start(cb.msg, cb.cmd);
757 for (i = 0; i < val->len; i++) {
758 err = swconfig_send_multipart(&cb, &val->value.ports[i]);
763 swconfig_close_portlist(&cb, NULL);
771 swconfig_get_attr(struct sk_buff *skb, struct genl_info *info)
773 struct genlmsghdr *hdr = nlmsg_data(info->nlhdr);
774 const struct switch_attr *attr;
775 struct switch_dev *dev;
776 struct sk_buff *msg = NULL;
777 struct switch_val val;
781 dev = swconfig_get_dev(info);
785 memset(&val, 0, sizeof(val));
786 attr = swconfig_lookup_attr(dev, info, &val);
787 if (!attr || !attr->get)
790 if (attr->type == SWITCH_TYPE_PORTS) {
791 val.value.ports = dev->portbuf;
792 memset(dev->portbuf, 0,
793 sizeof(struct switch_port) * dev->ports);
796 err = attr->get(dev, attr, &val);
800 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
804 hdr = genlmsg_put(msg, info->snd_portid, info->snd_seq, &switch_fam,
807 goto nla_put_failure;
809 switch (attr->type) {
810 case SWITCH_TYPE_INT:
811 if (nla_put_u32(msg, SWITCH_ATTR_OP_VALUE_INT, val.value.i))
812 goto nla_put_failure;
814 case SWITCH_TYPE_STRING:
815 if (nla_put_string(msg, SWITCH_ATTR_OP_VALUE_STR, val.value.s))
816 goto nla_put_failure;
818 case SWITCH_TYPE_PORTS:
819 err = swconfig_send_ports(&msg, info,
820 SWITCH_ATTR_OP_VALUE_PORTS, &val);
822 goto nla_put_failure;
825 pr_debug("invalid type in attribute\n");
829 err = genlmsg_end(msg, hdr);
831 goto nla_put_failure;
833 swconfig_put_dev(dev);
834 return genlmsg_reply(msg, info);
840 swconfig_put_dev(dev);
847 swconfig_send_switch(struct sk_buff *msg, u32 pid, u32 seq, int flags,
848 const struct switch_dev *dev)
850 struct nlattr *p = NULL, *m = NULL;
854 hdr = genlmsg_put(msg, pid, seq, &switch_fam, flags,
855 SWITCH_CMD_NEW_ATTR);
859 if (nla_put_u32(msg, SWITCH_ATTR_ID, dev->id))
860 goto nla_put_failure;
861 if (nla_put_string(msg, SWITCH_ATTR_DEV_NAME, dev->devname))
862 goto nla_put_failure;
863 if (nla_put_string(msg, SWITCH_ATTR_ALIAS, dev->alias))
864 goto nla_put_failure;
865 if (nla_put_string(msg, SWITCH_ATTR_NAME, dev->name))
866 goto nla_put_failure;
867 if (nla_put_u32(msg, SWITCH_ATTR_VLANS, dev->vlans))
868 goto nla_put_failure;
869 if (nla_put_u32(msg, SWITCH_ATTR_PORTS, dev->ports))
870 goto nla_put_failure;
871 if (nla_put_u32(msg, SWITCH_ATTR_CPU_PORT, dev->cpu_port))
872 goto nla_put_failure;
874 m = nla_nest_start(msg, SWITCH_ATTR_PORTMAP);
876 goto nla_put_failure;
877 for (i = 0; i < dev->ports; i++) {
878 p = nla_nest_start(msg, SWITCH_ATTR_PORTS);
881 if (dev->portmap[i].s) {
882 if (nla_put_string(msg, SWITCH_PORTMAP_SEGMENT,
884 goto nla_put_failure;
885 if (nla_put_u32(msg, SWITCH_PORTMAP_VIRT,
886 dev->portmap[i].virt))
887 goto nla_put_failure;
889 nla_nest_end(msg, p);
891 nla_nest_end(msg, m);
892 return genlmsg_end(msg, hdr);
894 genlmsg_cancel(msg, hdr);
898 static int swconfig_dump_switches(struct sk_buff *skb,
899 struct netlink_callback *cb)
901 struct switch_dev *dev;
902 int start = cb->args[0];
906 list_for_each_entry(dev, &swdevs, dev_list) {
909 if (swconfig_send_switch(skb, NETLINK_CB(cb->skb).portid,
910 cb->nlh->nlmsg_seq, NLM_F_MULTI,
921 swconfig_done(struct netlink_callback *cb)
926 static struct genl_ops swconfig_ops[] = {
928 .cmd = SWITCH_CMD_LIST_GLOBAL,
929 .doit = swconfig_list_attrs,
930 .policy = switch_policy,
933 .cmd = SWITCH_CMD_LIST_VLAN,
934 .doit = swconfig_list_attrs,
935 .policy = switch_policy,
938 .cmd = SWITCH_CMD_LIST_PORT,
939 .doit = swconfig_list_attrs,
940 .policy = switch_policy,
943 .cmd = SWITCH_CMD_GET_GLOBAL,
944 .doit = swconfig_get_attr,
945 .policy = switch_policy,
948 .cmd = SWITCH_CMD_GET_VLAN,
949 .doit = swconfig_get_attr,
950 .policy = switch_policy,
953 .cmd = SWITCH_CMD_GET_PORT,
954 .doit = swconfig_get_attr,
955 .policy = switch_policy,
958 .cmd = SWITCH_CMD_SET_GLOBAL,
959 .doit = swconfig_set_attr,
960 .policy = switch_policy,
963 .cmd = SWITCH_CMD_SET_VLAN,
964 .doit = swconfig_set_attr,
965 .policy = switch_policy,
968 .cmd = SWITCH_CMD_SET_PORT,
969 .doit = swconfig_set_attr,
970 .policy = switch_policy,
973 .cmd = SWITCH_CMD_GET_SWITCH,
974 .dumpit = swconfig_dump_switches,
975 .policy = switch_policy,
976 .done = swconfig_done,
982 of_switch_load_portmap(struct switch_dev *dev)
984 struct device_node *port;
989 for_each_child_of_node(dev->of_node, port) {
994 if (!of_device_is_compatible(port, "swconfig,port"))
997 if (of_property_read_string(port, "swconfig,segment", &segment))
1000 prop = of_get_property(port, "swconfig,portmap", &size);
1004 if (size != (2 * sizeof(*prop))) {
1005 pr_err("%s: failed to parse port mapping\n",
1010 phys = be32_to_cpup(prop++);
1011 if ((phys < 0) | (phys >= dev->ports)) {
1012 pr_err("%s: physical port index out of range\n",
1017 dev->portmap[phys].s = kstrdup(segment, GFP_KERNEL);
1018 dev->portmap[phys].virt = be32_to_cpup(prop);
1019 pr_debug("Found port: %s, physical: %d, virtual: %d\n",
1020 segment, phys, dev->portmap[phys].virt);
1026 register_switch(struct switch_dev *dev, struct net_device *netdev)
1028 struct switch_dev *sdev;
1029 const int max_switches = 8 * sizeof(unsigned long);
1030 unsigned long in_use = 0;
1034 INIT_LIST_HEAD(&dev->dev_list);
1036 dev->netdev = netdev;
1038 dev->alias = netdev->name;
1040 BUG_ON(!dev->alias);
1042 if (dev->ports > 0) {
1043 dev->portbuf = kzalloc(sizeof(struct switch_port) *
1044 dev->ports, GFP_KERNEL);
1047 dev->portmap = kzalloc(sizeof(struct switch_portmap) *
1048 dev->ports, GFP_KERNEL);
1049 if (!dev->portmap) {
1050 kfree(dev->portbuf);
1054 swconfig_defaults_init(dev);
1055 mutex_init(&dev->sw_mutex);
1057 dev->id = ++swdev_id;
1059 list_for_each_entry(sdev, &swdevs, dev_list) {
1060 if (!sscanf(sdev->devname, SWCONFIG_DEVNAME, &i))
1062 if (i < 0 || i > max_switches)
1065 set_bit(i, &in_use);
1067 i = find_first_zero_bit(&in_use, max_switches);
1069 if (i == max_switches) {
1076 of_switch_load_portmap(dev);
1079 /* fill device name */
1080 snprintf(dev->devname, IFNAMSIZ, SWCONFIG_DEVNAME, i);
1082 list_add(&dev->dev_list, &swdevs);
1085 err = swconfig_create_led_trigger(dev);
1091 EXPORT_SYMBOL_GPL(register_switch);
1094 unregister_switch(struct switch_dev *dev)
1096 swconfig_destroy_led_trigger(dev);
1097 kfree(dev->portbuf);
1098 mutex_lock(&dev->sw_mutex);
1100 list_del(&dev->dev_list);
1102 mutex_unlock(&dev->sw_mutex);
1104 EXPORT_SYMBOL_GPL(unregister_switch);
1112 INIT_LIST_HEAD(&swdevs);
1114 #if (LINUX_VERSION_CODE < KERNEL_VERSION(3,13,0))
1115 err = genl_register_family(&switch_fam);
1119 for (i = 0; i < ARRAY_SIZE(swconfig_ops); i++) {
1120 err = genl_register_ops(&switch_fam, &swconfig_ops[i]);
1127 err = genl_register_family_with_ops(&switch_fam, swconfig_ops);
1133 genl_unregister_family(&switch_fam);
1140 genl_unregister_family(&switch_fam);
1143 module_init(swconfig_init);
1144 module_exit(swconfig_exit);