1/*
  2 * drivers/net/bond/bond_netlink.c - Netlink interface for bonding
  3 * Copyright (c) 2013 Jiri Pirko <jiri@resnulli.us>
  4 * Copyright (c) 2013 Scott Feldman <sfeldma@cumulusnetworks.com>
  5 *
  6 * This program is free software; you can redistribute it and/or modify
  7 * it under the terms of the GNU General Public License as published by
  8 * the Free Software Foundation; either version 2 of the License, or
  9 * (at your option) any later version.
 10 */
 11
 12#include <linux/module.h>
 13#include <linux/errno.h>
 14#include <linux/netdevice.h>
 15#include <linux/etherdevice.h>
 16#include <linux/if_link.h>
 17#include <linux/if_ether.h>
 18#include <net/netlink.h>
 19#include <net/rtnetlink.h>
 20#include <net/bonding.h>
 
 21
 22static size_t bond_get_slave_size(const struct net_device *bond_dev,
 23				  const struct net_device *slave_dev)
 24{
 25	return nla_total_size(sizeof(u8)) +	/* IFLA_BOND_SLAVE_STATE */
 26		nla_total_size(sizeof(u8)) +	/* IFLA_BOND_SLAVE_MII_STATUS */
 27		nla_total_size(sizeof(u32)) +	/* IFLA_BOND_SLAVE_LINK_FAILURE_COUNT */
 28		nla_total_size(MAX_ADDR_LEN) +	/* IFLA_BOND_SLAVE_PERM_HWADDR */
 29		nla_total_size(sizeof(u16)) +	/* IFLA_BOND_SLAVE_QUEUE_ID */
 30		nla_total_size(sizeof(u16)) +	/* IFLA_BOND_SLAVE_AD_AGGREGATOR_ID */
 31		nla_total_size(sizeof(u8)) +	/* IFLA_BOND_SLAVE_AD_ACTOR_OPER_PORT_STATE */
 32		nla_total_size(sizeof(u16)) +	/* IFLA_BOND_SLAVE_AD_PARTNER_OPER_PORT_STATE */
 
 33		0;
 34}
 35
 36static int bond_fill_slave_info(struct sk_buff *skb,
 37				const struct net_device *bond_dev,
 38				const struct net_device *slave_dev)
 39{
 40	struct slave *slave = bond_slave_get_rtnl(slave_dev);
 41
 42	if (nla_put_u8(skb, IFLA_BOND_SLAVE_STATE, bond_slave_state(slave)))
 43		goto nla_put_failure;
 44
 45	if (nla_put_u8(skb, IFLA_BOND_SLAVE_MII_STATUS, slave->link))
 46		goto nla_put_failure;
 47
 48	if (nla_put_u32(skb, IFLA_BOND_SLAVE_LINK_FAILURE_COUNT,
 49			slave->link_failure_count))
 50		goto nla_put_failure;
 51
 52	if (nla_put(skb, IFLA_BOND_SLAVE_PERM_HWADDR,
 53		    slave_dev->addr_len, slave->perm_hwaddr))
 54		goto nla_put_failure;
 55
 56	if (nla_put_u16(skb, IFLA_BOND_SLAVE_QUEUE_ID, slave->queue_id))
 
 
 
 
 57		goto nla_put_failure;
 58
 59	if (BOND_MODE(slave->bond) == BOND_MODE_8023AD) {
 60		const struct aggregator *agg;
 61		const struct port *ad_port;
 62
 63		ad_port = &SLAVE_AD_INFO(slave)->port;
 64		agg = SLAVE_AD_INFO(slave)->port.aggregator;
 65		if (agg) {
 66			if (nla_put_u16(skb, IFLA_BOND_SLAVE_AD_AGGREGATOR_ID,
 67					agg->aggregator_identifier))
 68				goto nla_put_failure;
 69			if (nla_put_u8(skb,
 70				       IFLA_BOND_SLAVE_AD_ACTOR_OPER_PORT_STATE,
 71				       ad_port->actor_oper_port_state))
 72				goto nla_put_failure;
 73			if (nla_put_u16(skb,
 74					IFLA_BOND_SLAVE_AD_PARTNER_OPER_PORT_STATE,
 75					ad_port->partner_oper.port_state))
 76				goto nla_put_failure;
 77		}
 78	}
 79
 80	return 0;
 81
 82nla_put_failure:
 83	return -EMSGSIZE;
 84}
 85
 
 
 
 
 
 86static const struct nla_policy bond_policy[IFLA_BOND_MAX + 1] = {
 87	[IFLA_BOND_MODE]		= { .type = NLA_U8 },
 88	[IFLA_BOND_ACTIVE_SLAVE]	= { .type = NLA_U32 },
 89	[IFLA_BOND_MIIMON]		= { .type = NLA_U32 },
 90	[IFLA_BOND_UPDELAY]		= { .type = NLA_U32 },
 91	[IFLA_BOND_DOWNDELAY]		= { .type = NLA_U32 },
 92	[IFLA_BOND_USE_CARRIER]		= { .type = NLA_U8 },
 93	[IFLA_BOND_ARP_INTERVAL]	= { .type = NLA_U32 },
 94	[IFLA_BOND_ARP_IP_TARGET]	= { .type = NLA_NESTED },
 95	[IFLA_BOND_ARP_VALIDATE]	= { .type = NLA_U32 },
 96	[IFLA_BOND_ARP_ALL_TARGETS]	= { .type = NLA_U32 },
 97	[IFLA_BOND_PRIMARY]		= { .type = NLA_U32 },
 98	[IFLA_BOND_PRIMARY_RESELECT]	= { .type = NLA_U8 },
 99	[IFLA_BOND_FAIL_OVER_MAC]	= { .type = NLA_U8 },
100	[IFLA_BOND_XMIT_HASH_POLICY]	= { .type = NLA_U8 },
101	[IFLA_BOND_RESEND_IGMP]		= { .type = NLA_U32 },
102	[IFLA_BOND_NUM_PEER_NOTIF]	= { .type = NLA_U8 },
103	[IFLA_BOND_ALL_SLAVES_ACTIVE]	= { .type = NLA_U8 },
104	[IFLA_BOND_MIN_LINKS]		= { .type = NLA_U32 },
105	[IFLA_BOND_LP_INTERVAL]		= { .type = NLA_U32 },
106	[IFLA_BOND_PACKETS_PER_SLAVE]	= { .type = NLA_U32 },
 
107	[IFLA_BOND_AD_LACP_RATE]	= { .type = NLA_U8 },
108	[IFLA_BOND_AD_SELECT]		= { .type = NLA_U8 },
109	[IFLA_BOND_AD_INFO]		= { .type = NLA_NESTED },
110	[IFLA_BOND_AD_ACTOR_SYS_PRIO]	= { .type = NLA_U16 },
111	[IFLA_BOND_AD_USER_PORT_KEY]	= { .type = NLA_U16 },
112	[IFLA_BOND_AD_ACTOR_SYSTEM]	= { .type = NLA_BINARY,
113					    .len  = ETH_ALEN },
114	[IFLA_BOND_TLB_DYNAMIC_LB]	= { .type = NLA_U8 },
 
 
 
 
115};
116
117static const struct nla_policy bond_slave_policy[IFLA_BOND_SLAVE_MAX + 1] = {
118	[IFLA_BOND_SLAVE_QUEUE_ID]	= { .type = NLA_U16 },
 
119};
120
121static int bond_validate(struct nlattr *tb[], struct nlattr *data[],
122			 struct netlink_ext_ack *extack)
123{
124	if (tb[IFLA_ADDRESS]) {
125		if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN)
126			return -EINVAL;
127		if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS])))
128			return -EADDRNOTAVAIL;
129	}
130	return 0;
131}
132
133static int bond_slave_changelink(struct net_device *bond_dev,
134				 struct net_device *slave_dev,
135				 struct nlattr *tb[], struct nlattr *data[],
136				 struct netlink_ext_ack *extack)
137{
138	struct bonding *bond = netdev_priv(bond_dev);
139	struct bond_opt_value newval;
140	int err;
141
142	if (!data)
143		return 0;
144
145	if (data[IFLA_BOND_SLAVE_QUEUE_ID]) {
146		u16 queue_id = nla_get_u16(data[IFLA_BOND_SLAVE_QUEUE_ID]);
147		char queue_id_str[IFNAMSIZ + 7];
148
149		/* queue_id option setting expects slave_name:queue_id */
150		snprintf(queue_id_str, sizeof(queue_id_str), "%s:%u\n",
151			 slave_dev->name, queue_id);
152		bond_opt_initstr(&newval, queue_id_str);
153		err = __bond_opt_set(bond, BOND_OPT_QUEUE_ID, &newval);
 
 
 
 
 
 
 
 
 
 
 
154		if (err)
155			return err;
156	}
157
158	return 0;
159}
160
161static int bond_changelink(struct net_device *bond_dev, struct nlattr *tb[],
162			   struct nlattr *data[],
163			   struct netlink_ext_ack *extack)
164{
165	struct bonding *bond = netdev_priv(bond_dev);
166	struct bond_opt_value newval;
167	int miimon = 0;
168	int err;
169
170	if (!data)
171		return 0;
172
173	if (data[IFLA_BOND_MODE]) {
174		int mode = nla_get_u8(data[IFLA_BOND_MODE]);
175
176		bond_opt_initval(&newval, mode);
177		err = __bond_opt_set(bond, BOND_OPT_MODE, &newval);
 
178		if (err)
179			return err;
180	}
181	if (data[IFLA_BOND_ACTIVE_SLAVE]) {
182		int ifindex = nla_get_u32(data[IFLA_BOND_ACTIVE_SLAVE]);
183		struct net_device *slave_dev;
184		char *active_slave = "";
185
186		if (ifindex != 0) {
187			slave_dev = __dev_get_by_index(dev_net(bond_dev),
188						       ifindex);
189			if (!slave_dev)
190				return -ENODEV;
191			active_slave = slave_dev->name;
192		}
193		bond_opt_initstr(&newval, active_slave);
194		err = __bond_opt_set(bond, BOND_OPT_ACTIVE_SLAVE, &newval);
 
195		if (err)
196			return err;
197	}
198	if (data[IFLA_BOND_MIIMON]) {
199		miimon = nla_get_u32(data[IFLA_BOND_MIIMON]);
200
201		bond_opt_initval(&newval, miimon);
202		err = __bond_opt_set(bond, BOND_OPT_MIIMON, &newval);
 
203		if (err)
204			return err;
205	}
206	if (data[IFLA_BOND_UPDELAY]) {
207		int updelay = nla_get_u32(data[IFLA_BOND_UPDELAY]);
208
209		bond_opt_initval(&newval, updelay);
210		err = __bond_opt_set(bond, BOND_OPT_UPDELAY, &newval);
 
211		if (err)
212			return err;
213	}
214	if (data[IFLA_BOND_DOWNDELAY]) {
215		int downdelay = nla_get_u32(data[IFLA_BOND_DOWNDELAY]);
216
217		bond_opt_initval(&newval, downdelay);
218		err = __bond_opt_set(bond, BOND_OPT_DOWNDELAY, &newval);
 
 
 
 
 
 
 
 
 
 
219		if (err)
220			return err;
221	}
222	if (data[IFLA_BOND_USE_CARRIER]) {
223		int use_carrier = nla_get_u8(data[IFLA_BOND_USE_CARRIER]);
224
225		bond_opt_initval(&newval, use_carrier);
226		err = __bond_opt_set(bond, BOND_OPT_USE_CARRIER, &newval);
 
227		if (err)
228			return err;
229	}
230	if (data[IFLA_BOND_ARP_INTERVAL]) {
231		int arp_interval = nla_get_u32(data[IFLA_BOND_ARP_INTERVAL]);
232
233		if (arp_interval && miimon) {
234			netdev_err(bond->dev, "ARP monitoring cannot be used with MII monitoring\n");
 
235			return -EINVAL;
236		}
237
238		bond_opt_initval(&newval, arp_interval);
239		err = __bond_opt_set(bond, BOND_OPT_ARP_INTERVAL, &newval);
 
240		if (err)
241			return err;
242	}
243	if (data[IFLA_BOND_ARP_IP_TARGET]) {
244		struct nlattr *attr;
245		int i = 0, rem;
246
247		bond_option_arp_ip_targets_clear(bond);
248		nla_for_each_nested(attr, data[IFLA_BOND_ARP_IP_TARGET], rem) {
249			__be32 target;
250
251			if (nla_len(attr) < sizeof(target))
252				return -EINVAL;
253
254			target = nla_get_be32(attr);
255
256			bond_opt_initval(&newval, (__force u64)target);
257			err = __bond_opt_set(bond, BOND_OPT_ARP_TARGETS,
258					     &newval);
 
 
259			if (err)
260				break;
261			i++;
262		}
263		if (i == 0 && bond->params.arp_interval)
264			netdev_warn(bond->dev, "Removing last arp target with arp_interval on\n");
265		if (err)
266			return err;
267	}
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
268	if (data[IFLA_BOND_ARP_VALIDATE]) {
269		int arp_validate = nla_get_u32(data[IFLA_BOND_ARP_VALIDATE]);
270
271		if (arp_validate && miimon) {
272			netdev_err(bond->dev, "ARP validating cannot be used with MII monitoring\n");
 
273			return -EINVAL;
274		}
275
276		bond_opt_initval(&newval, arp_validate);
277		err = __bond_opt_set(bond, BOND_OPT_ARP_VALIDATE, &newval);
 
278		if (err)
279			return err;
280	}
281	if (data[IFLA_BOND_ARP_ALL_TARGETS]) {
282		int arp_all_targets =
283			nla_get_u32(data[IFLA_BOND_ARP_ALL_TARGETS]);
284
285		bond_opt_initval(&newval, arp_all_targets);
286		err = __bond_opt_set(bond, BOND_OPT_ARP_ALL_TARGETS, &newval);
 
287		if (err)
288			return err;
289	}
290	if (data[IFLA_BOND_PRIMARY]) {
291		int ifindex = nla_get_u32(data[IFLA_BOND_PRIMARY]);
292		struct net_device *dev;
293		char *primary = "";
294
295		dev = __dev_get_by_index(dev_net(bond_dev), ifindex);
296		if (dev)
297			primary = dev->name;
298
299		bond_opt_initstr(&newval, primary);
300		err = __bond_opt_set(bond, BOND_OPT_PRIMARY, &newval);
 
301		if (err)
302			return err;
303	}
304	if (data[IFLA_BOND_PRIMARY_RESELECT]) {
305		int primary_reselect =
306			nla_get_u8(data[IFLA_BOND_PRIMARY_RESELECT]);
307
308		bond_opt_initval(&newval, primary_reselect);
309		err = __bond_opt_set(bond, BOND_OPT_PRIMARY_RESELECT, &newval);
 
310		if (err)
311			return err;
312	}
313	if (data[IFLA_BOND_FAIL_OVER_MAC]) {
314		int fail_over_mac =
315			nla_get_u8(data[IFLA_BOND_FAIL_OVER_MAC]);
316
317		bond_opt_initval(&newval, fail_over_mac);
318		err = __bond_opt_set(bond, BOND_OPT_FAIL_OVER_MAC, &newval);
 
319		if (err)
320			return err;
321	}
322	if (data[IFLA_BOND_XMIT_HASH_POLICY]) {
323		int xmit_hash_policy =
324			nla_get_u8(data[IFLA_BOND_XMIT_HASH_POLICY]);
325
326		bond_opt_initval(&newval, xmit_hash_policy);
327		err = __bond_opt_set(bond, BOND_OPT_XMIT_HASH, &newval);
 
328		if (err)
329			return err;
330	}
331	if (data[IFLA_BOND_RESEND_IGMP]) {
332		int resend_igmp =
333			nla_get_u32(data[IFLA_BOND_RESEND_IGMP]);
334
335		bond_opt_initval(&newval, resend_igmp);
336		err = __bond_opt_set(bond, BOND_OPT_RESEND_IGMP, &newval);
 
337		if (err)
338			return err;
339	}
340	if (data[IFLA_BOND_NUM_PEER_NOTIF]) {
341		int num_peer_notif =
342			nla_get_u8(data[IFLA_BOND_NUM_PEER_NOTIF]);
343
344		bond_opt_initval(&newval, num_peer_notif);
345		err = __bond_opt_set(bond, BOND_OPT_NUM_PEER_NOTIF, &newval);
 
346		if (err)
347			return err;
348	}
349	if (data[IFLA_BOND_ALL_SLAVES_ACTIVE]) {
350		int all_slaves_active =
351			nla_get_u8(data[IFLA_BOND_ALL_SLAVES_ACTIVE]);
352
353		bond_opt_initval(&newval, all_slaves_active);
354		err = __bond_opt_set(bond, BOND_OPT_ALL_SLAVES_ACTIVE, &newval);
 
355		if (err)
356			return err;
357	}
358	if (data[IFLA_BOND_MIN_LINKS]) {
359		int min_links =
360			nla_get_u32(data[IFLA_BOND_MIN_LINKS]);
361
362		bond_opt_initval(&newval, min_links);
363		err = __bond_opt_set(bond, BOND_OPT_MINLINKS, &newval);
 
364		if (err)
365			return err;
366	}
367	if (data[IFLA_BOND_LP_INTERVAL]) {
368		int lp_interval =
369			nla_get_u32(data[IFLA_BOND_LP_INTERVAL]);
370
371		bond_opt_initval(&newval, lp_interval);
372		err = __bond_opt_set(bond, BOND_OPT_LP_INTERVAL, &newval);
 
373		if (err)
374			return err;
375	}
376	if (data[IFLA_BOND_PACKETS_PER_SLAVE]) {
377		int packets_per_slave =
378			nla_get_u32(data[IFLA_BOND_PACKETS_PER_SLAVE]);
379
380		bond_opt_initval(&newval, packets_per_slave);
381		err = __bond_opt_set(bond, BOND_OPT_PACKETS_PER_SLAVE, &newval);
 
 
 
 
 
 
 
 
 
 
 
382		if (err)
383			return err;
384	}
 
385	if (data[IFLA_BOND_AD_LACP_RATE]) {
386		int lacp_rate =
387			nla_get_u8(data[IFLA_BOND_AD_LACP_RATE]);
388
389		bond_opt_initval(&newval, lacp_rate);
390		err = __bond_opt_set(bond, BOND_OPT_LACP_RATE, &newval);
 
391		if (err)
392			return err;
393	}
394	if (data[IFLA_BOND_AD_SELECT]) {
395		int ad_select =
396			nla_get_u8(data[IFLA_BOND_AD_SELECT]);
397
398		bond_opt_initval(&newval, ad_select);
399		err = __bond_opt_set(bond, BOND_OPT_AD_SELECT, &newval);
 
400		if (err)
401			return err;
402	}
403	if (data[IFLA_BOND_AD_ACTOR_SYS_PRIO]) {
404		int actor_sys_prio =
405			nla_get_u16(data[IFLA_BOND_AD_ACTOR_SYS_PRIO]);
406
407		bond_opt_initval(&newval, actor_sys_prio);
408		err = __bond_opt_set(bond, BOND_OPT_AD_ACTOR_SYS_PRIO, &newval);
 
409		if (err)
410			return err;
411	}
412	if (data[IFLA_BOND_AD_USER_PORT_KEY]) {
413		int port_key =
414			nla_get_u16(data[IFLA_BOND_AD_USER_PORT_KEY]);
415
416		bond_opt_initval(&newval, port_key);
417		err = __bond_opt_set(bond, BOND_OPT_AD_USER_PORT_KEY, &newval);
 
418		if (err)
419			return err;
420	}
421	if (data[IFLA_BOND_AD_ACTOR_SYSTEM]) {
422		if (nla_len(data[IFLA_BOND_AD_ACTOR_SYSTEM]) != ETH_ALEN)
423			return -EINVAL;
424
425		bond_opt_initval(&newval,
426				 nla_get_u64(data[IFLA_BOND_AD_ACTOR_SYSTEM]));
427		err = __bond_opt_set(bond, BOND_OPT_AD_ACTOR_SYSTEM, &newval);
 
428		if (err)
429			return err;
430	}
431	if (data[IFLA_BOND_TLB_DYNAMIC_LB]) {
432		int dynamic_lb = nla_get_u8(data[IFLA_BOND_TLB_DYNAMIC_LB]);
433
434		bond_opt_initval(&newval, dynamic_lb);
435		err = __bond_opt_set(bond, BOND_OPT_TLB_DYNAMIC_LB, &newval);
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
436		if (err)
437			return err;
438	}
439
440	return 0;
441}
442
443static int bond_newlink(struct net *src_net, struct net_device *bond_dev,
444			struct nlattr *tb[], struct nlattr *data[],
445			struct netlink_ext_ack *extack)
446{
447	int err;
448
449	err = bond_changelink(bond_dev, tb, data, extack);
450	if (err < 0)
451		return err;
452
453	err = register_netdevice(bond_dev);
454
455	netif_carrier_off(bond_dev);
456	if (!err) {
457		struct bonding *bond = netdev_priv(bond_dev);
458
 
459		bond_work_init_all(bond);
460	}
461
462	return err;
463}
464
465static size_t bond_get_size(const struct net_device *bond_dev)
466{
467	return nla_total_size(sizeof(u8)) +	/* IFLA_BOND_MODE */
468		nla_total_size(sizeof(u32)) +	/* IFLA_BOND_ACTIVE_SLAVE */
469		nla_total_size(sizeof(u32)) +	/* IFLA_BOND_MIIMON */
470		nla_total_size(sizeof(u32)) +	/* IFLA_BOND_UPDELAY */
471		nla_total_size(sizeof(u32)) +	/* IFLA_BOND_DOWNDELAY */
472		nla_total_size(sizeof(u8)) +	/* IFLA_BOND_USE_CARRIER */
473		nla_total_size(sizeof(u32)) +	/* IFLA_BOND_ARP_INTERVAL */
474						/* IFLA_BOND_ARP_IP_TARGET */
475		nla_total_size(sizeof(struct nlattr)) +
476		nla_total_size(sizeof(u32)) * BOND_MAX_ARP_TARGETS +
477		nla_total_size(sizeof(u32)) +	/* IFLA_BOND_ARP_VALIDATE */
478		nla_total_size(sizeof(u32)) +	/* IFLA_BOND_ARP_ALL_TARGETS */
479		nla_total_size(sizeof(u32)) +	/* IFLA_BOND_PRIMARY */
480		nla_total_size(sizeof(u8)) +	/* IFLA_BOND_PRIMARY_RESELECT */
481		nla_total_size(sizeof(u8)) +	/* IFLA_BOND_FAIL_OVER_MAC */
482		nla_total_size(sizeof(u8)) +	/* IFLA_BOND_XMIT_HASH_POLICY */
483		nla_total_size(sizeof(u32)) +	/* IFLA_BOND_RESEND_IGMP */
484		nla_total_size(sizeof(u8)) +	/* IFLA_BOND_NUM_PEER_NOTIF */
485		nla_total_size(sizeof(u8)) +   /* IFLA_BOND_ALL_SLAVES_ACTIVE */
486		nla_total_size(sizeof(u32)) +	/* IFLA_BOND_MIN_LINKS */
487		nla_total_size(sizeof(u32)) +	/* IFLA_BOND_LP_INTERVAL */
488		nla_total_size(sizeof(u32)) +  /* IFLA_BOND_PACKETS_PER_SLAVE */
 
489		nla_total_size(sizeof(u8)) +	/* IFLA_BOND_AD_LACP_RATE */
490		nla_total_size(sizeof(u8)) +	/* IFLA_BOND_AD_SELECT */
491		nla_total_size(sizeof(struct nlattr)) + /* IFLA_BOND_AD_INFO */
492		nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_AGGREGATOR */
493		nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_NUM_PORTS */
494		nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_ACTOR_KEY */
495		nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_PARTNER_KEY*/
496		nla_total_size(ETH_ALEN) +    /* IFLA_BOND_AD_INFO_PARTNER_MAC*/
497		nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_ACTOR_SYS_PRIO */
498		nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_USER_PORT_KEY */
499		nla_total_size(ETH_ALEN) + /* IFLA_BOND_AD_ACTOR_SYSTEM */
500		nla_total_size(sizeof(u8)) + /* IFLA_BOND_TLB_DYNAMIC_LB */
 
 
 
 
 
 
501		0;
502}
503
504static int bond_option_active_slave_get_ifindex(struct bonding *bond)
505{
506	const struct net_device *slave;
507	int ifindex;
508
509	rcu_read_lock();
510	slave = bond_option_active_slave_get_rcu(bond);
511	ifindex = slave ? slave->ifindex : 0;
512	rcu_read_unlock();
513	return ifindex;
514}
515
516static int bond_fill_info(struct sk_buff *skb,
517			  const struct net_device *bond_dev)
518{
519	struct bonding *bond = netdev_priv(bond_dev);
520	unsigned int packets_per_slave;
521	int ifindex, i, targets_added;
522	struct nlattr *targets;
523	struct slave *primary;
524
525	if (nla_put_u8(skb, IFLA_BOND_MODE, BOND_MODE(bond)))
526		goto nla_put_failure;
527
528	ifindex = bond_option_active_slave_get_ifindex(bond);
529	if (ifindex && nla_put_u32(skb, IFLA_BOND_ACTIVE_SLAVE, ifindex))
530		goto nla_put_failure;
531
532	if (nla_put_u32(skb, IFLA_BOND_MIIMON, bond->params.miimon))
533		goto nla_put_failure;
534
535	if (nla_put_u32(skb, IFLA_BOND_UPDELAY,
536			bond->params.updelay * bond->params.miimon))
537		goto nla_put_failure;
538
539	if (nla_put_u32(skb, IFLA_BOND_DOWNDELAY,
540			bond->params.downdelay * bond->params.miimon))
541		goto nla_put_failure;
542
 
 
 
 
543	if (nla_put_u8(skb, IFLA_BOND_USE_CARRIER, bond->params.use_carrier))
544		goto nla_put_failure;
545
546	if (nla_put_u32(skb, IFLA_BOND_ARP_INTERVAL, bond->params.arp_interval))
547		goto nla_put_failure;
548
549	targets = nla_nest_start(skb, IFLA_BOND_ARP_IP_TARGET);
550	if (!targets)
551		goto nla_put_failure;
552
553	targets_added = 0;
554	for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) {
555		if (bond->params.arp_targets[i]) {
556			if (nla_put_be32(skb, i, bond->params.arp_targets[i]))
557				goto nla_put_failure;
558			targets_added = 1;
559		}
560	}
561
562	if (targets_added)
563		nla_nest_end(skb, targets);
564	else
565		nla_nest_cancel(skb, targets);
566
567	if (nla_put_u32(skb, IFLA_BOND_ARP_VALIDATE, bond->params.arp_validate))
568		goto nla_put_failure;
569
570	if (nla_put_u32(skb, IFLA_BOND_ARP_ALL_TARGETS,
571			bond->params.arp_all_targets))
572		goto nla_put_failure;
573
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
574	primary = rtnl_dereference(bond->primary_slave);
575	if (primary &&
576	    nla_put_u32(skb, IFLA_BOND_PRIMARY, primary->dev->ifindex))
577		goto nla_put_failure;
578
579	if (nla_put_u8(skb, IFLA_BOND_PRIMARY_RESELECT,
580		       bond->params.primary_reselect))
581		goto nla_put_failure;
582
583	if (nla_put_u8(skb, IFLA_BOND_FAIL_OVER_MAC,
584		       bond->params.fail_over_mac))
585		goto nla_put_failure;
586
587	if (nla_put_u8(skb, IFLA_BOND_XMIT_HASH_POLICY,
588		       bond->params.xmit_policy))
589		goto nla_put_failure;
590
591	if (nla_put_u32(skb, IFLA_BOND_RESEND_IGMP,
592		        bond->params.resend_igmp))
593		goto nla_put_failure;
594
595	if (nla_put_u8(skb, IFLA_BOND_NUM_PEER_NOTIF,
596		       bond->params.num_peer_notif))
597		goto nla_put_failure;
598
599	if (nla_put_u8(skb, IFLA_BOND_ALL_SLAVES_ACTIVE,
600		       bond->params.all_slaves_active))
601		goto nla_put_failure;
602
603	if (nla_put_u32(skb, IFLA_BOND_MIN_LINKS,
604			bond->params.min_links))
605		goto nla_put_failure;
606
607	if (nla_put_u32(skb, IFLA_BOND_LP_INTERVAL,
608			bond->params.lp_interval))
609		goto nla_put_failure;
610
611	packets_per_slave = bond->params.packets_per_slave;
612	if (nla_put_u32(skb, IFLA_BOND_PACKETS_PER_SLAVE,
613			packets_per_slave))
614		goto nla_put_failure;
615
 
 
 
 
616	if (nla_put_u8(skb, IFLA_BOND_AD_LACP_RATE,
617		       bond->params.lacp_fast))
618		goto nla_put_failure;
619
620	if (nla_put_u8(skb, IFLA_BOND_AD_SELECT,
621		       bond->params.ad_select))
622		goto nla_put_failure;
623
624	if (nla_put_u8(skb, IFLA_BOND_TLB_DYNAMIC_LB,
625		       bond->params.tlb_dynamic_lb))
626		goto nla_put_failure;
627
 
 
 
 
 
 
 
 
628	if (BOND_MODE(bond) == BOND_MODE_8023AD) {
629		struct ad_info info;
630
631		if (capable(CAP_NET_ADMIN)) {
632			if (nla_put_u16(skb, IFLA_BOND_AD_ACTOR_SYS_PRIO,
633					bond->params.ad_actor_sys_prio))
634				goto nla_put_failure;
635
636			if (nla_put_u16(skb, IFLA_BOND_AD_USER_PORT_KEY,
637					bond->params.ad_user_port_key))
638				goto nla_put_failure;
639
640			if (nla_put(skb, IFLA_BOND_AD_ACTOR_SYSTEM,
641				    sizeof(bond->params.ad_actor_system),
642				    &bond->params.ad_actor_system))
643				goto nla_put_failure;
644		}
645		if (!bond_3ad_get_active_agg_info(bond, &info)) {
646			struct nlattr *nest;
647
648			nest = nla_nest_start(skb, IFLA_BOND_AD_INFO);
649			if (!nest)
650				goto nla_put_failure;
651
652			if (nla_put_u16(skb, IFLA_BOND_AD_INFO_AGGREGATOR,
653					info.aggregator_id))
654				goto nla_put_failure;
655			if (nla_put_u16(skb, IFLA_BOND_AD_INFO_NUM_PORTS,
656					info.ports))
657				goto nla_put_failure;
658			if (nla_put_u16(skb, IFLA_BOND_AD_INFO_ACTOR_KEY,
659					info.actor_key))
660				goto nla_put_failure;
661			if (nla_put_u16(skb, IFLA_BOND_AD_INFO_PARTNER_KEY,
662					info.partner_key))
663				goto nla_put_failure;
664			if (nla_put(skb, IFLA_BOND_AD_INFO_PARTNER_MAC,
665				    sizeof(info.partner_system),
666				    &info.partner_system))
667				goto nla_put_failure;
668
669			nla_nest_end(skb, nest);
670		}
671	}
672
673	return 0;
674
675nla_put_failure:
676	return -EMSGSIZE;
677}
678
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
679struct rtnl_link_ops bond_link_ops __read_mostly = {
680	.kind			= "bond",
681	.priv_size		= sizeof(struct bonding),
682	.setup			= bond_setup,
683	.maxtype		= IFLA_BOND_MAX,
684	.policy			= bond_policy,
685	.validate		= bond_validate,
686	.newlink		= bond_newlink,
687	.changelink		= bond_changelink,
688	.get_size		= bond_get_size,
689	.fill_info		= bond_fill_info,
690	.get_num_tx_queues	= bond_get_num_tx_queues,
691	.get_num_rx_queues	= bond_get_num_tx_queues, /* Use the same number
692							     as for TX queues */
 
 
693	.slave_maxtype		= IFLA_BOND_SLAVE_MAX,
694	.slave_policy		= bond_slave_policy,
695	.slave_changelink	= bond_slave_changelink,
696	.get_slave_size		= bond_get_slave_size,
697	.fill_slave_info	= bond_fill_slave_info,
698};
699
700int __init bond_netlink_init(void)
701{
702	return rtnl_link_register(&bond_link_ops);
703}
704
705void bond_netlink_fini(void)
706{
707	rtnl_link_unregister(&bond_link_ops);
708}
709
710MODULE_ALIAS_RTNL_LINK("bond");