Release 4.11 net/bridge/br_netlink.c

/*
 *      Bridge netlink control interface
 *
 *      Authors:
 *      Stephen Hemminger               <shemminger@osdl.org>
 *
 *      This program is free software; you can redistribute it and/or
 *      modify it under the terms of the GNU General Public License
 *      as published by the Free Software Foundation; either version
 *      2 of the License, or (at your option) any later version.
 */

#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/etherdevice.h>
#include <net/rtnetlink.h>
#include <net/net_namespace.h>
#include <net/sock.h>
#include <uapi/linux/if_bridge.h>

#include "br_private.h"
#include "br_private_stp.h"
#include "br_private_tunnel.h"



static int __get_num_vlan_infos(struct net_bridge_vlan_group *vg,
				u32 filter_mask)
{
	struct net_bridge_vlan *v;
	u16 vid_range_start = 0, vid_range_end = 0, vid_range_flags = 0;
	u16 flags, pvid;
	int num_vlans = 0;

	if (!(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED))
		return 0;

	pvid = br_get_pvid(vg);
	/* Count number of vlan infos */
	list_for_each_entry_rcu(v, &vg->vlan_list, vlist) {
		flags = 0;
		/* only a context, bridge vlan not activated */
		if (!br_vlan_should_use(v))
			continue;
		if (v->vid == pvid)
			flags |= BRIDGE_VLAN_INFO_PVID;

		if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)
			flags |= BRIDGE_VLAN_INFO_UNTAGGED;

		if (vid_range_start == 0) {
			goto initvars;
		} else if ((v->vid - vid_range_end) == 1 &&
			flags == vid_range_flags) {
			vid_range_end = v->vid;
			continue;
		} else {
			if ((vid_range_end - vid_range_start) > 0)
				num_vlans += 2;
			else
				num_vlans += 1;
		}
initvars:
		vid_range_start = v->vid;
		vid_range_end = v->vid;
		vid_range_flags = flags;
	}

	if (vid_range_start != 0) {
		if ((vid_range_end - vid_range_start) > 0)
			num_vlans += 2;
		else
			num_vlans += 1;
	}

	return num_vlans;
}

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static int br_get_num_vlan_infos(struct net_bridge_vlan_group *vg,
				 u32 filter_mask)
{
	int num_vlans;

	if (!vg)
		return 0;

	if (filter_mask & RTEXT_FILTER_BRVLAN)
		return vg->num_vlans;

	rcu_read_lock();
	num_vlans = __get_num_vlan_infos(vg, filter_mask);
	rcu_read_unlock();

	return num_vlans;
}

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static size_t br_get_link_af_size_filtered(const struct net_device *dev,
					   u32 filter_mask)
{
	struct net_bridge_vlan_group *vg = NULL;
	struct net_bridge_port *p = NULL;
	struct net_bridge *br;
	int num_vlan_infos;
	size_t vinfo_sz = 0;

	rcu_read_lock();
	if (br_port_exists(dev)) {
		p = br_port_get_rcu(dev);
		vg = nbp_vlan_group_rcu(p);
	} else if (dev->priv_flags & IFF_EBRIDGE) {
		br = netdev_priv(dev);
		vg = br_vlan_group_rcu(br);
	}
	num_vlan_infos = br_get_num_vlan_infos(vg, filter_mask);
	rcu_read_unlock();

	if (p && (p->flags & BR_VLAN_TUNNEL))
		vinfo_sz += br_get_vlan_tunnel_info_size(vg);

	/* Each VLAN is returned in bridge_vlan_info along with flags */
	vinfo_sz += num_vlan_infos * nla_total_size(sizeof(struct bridge_vlan_info));

	return vinfo_sz;
}

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2
33.33%
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7
4.96%
1
16.67%
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141
100.00%
6
100.00%



static inline size_t br_port_info_size(void)
{
	return nla_total_size(1)	/* IFLA_BRPORT_STATE  */
		+ nla_total_size(2)	/* IFLA_BRPORT_PRIORITY */
		+ nla_total_size(4)	/* IFLA_BRPORT_COST */
		+ nla_total_size(1)	/* IFLA_BRPORT_MODE */
		+ nla_total_size(1)	/* IFLA_BRPORT_GUARD */
		+ nla_total_size(1)	/* IFLA_BRPORT_PROTECT */
		+ nla_total_size(1)	/* IFLA_BRPORT_FAST_LEAVE */
		+ nla_total_size(1)	/* IFLA_BRPORT_MCAST_TO_UCAST */
		+ nla_total_size(1)	/* IFLA_BRPORT_LEARNING */
		+ nla_total_size(1)	/* IFLA_BRPORT_UNICAST_FLOOD */
		+ nla_total_size(1)	/* IFLA_BRPORT_PROXYARP */
		+ nla_total_size(1)	/* IFLA_BRPORT_PROXYARP_WIFI */
		+ nla_total_size(1)	/* IFLA_BRPORT_VLAN_TUNNEL */
		+ nla_total_size(sizeof(struct ifla_bridge_id))	/* IFLA_BRPORT_ROOT_ID */
		+ nla_total_size(sizeof(struct ifla_bridge_id))	/* IFLA_BRPORT_BRIDGE_ID */
		+ nla_total_size(sizeof(u16))	/* IFLA_BRPORT_DESIGNATED_PORT */
		+ nla_total_size(sizeof(u16))	/* IFLA_BRPORT_DESIGNATED_COST */
		+ nla_total_size(sizeof(u16))	/* IFLA_BRPORT_ID */
		+ nla_total_size(sizeof(u16))	/* IFLA_BRPORT_NO */
		+ nla_total_size(sizeof(u8))	/* IFLA_BRPORT_TOPOLOGY_CHANGE_ACK */
		+ nla_total_size(sizeof(u8))	/* IFLA_BRPORT_CONFIG_PENDING */
		+ nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_MESSAGE_AGE_TIMER */
		+ nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_FORWARD_DELAY_TIMER */
		+ nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_HOLD_TIMER */
#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
		+ nla_total_size(sizeof(u8))	/* IFLA_BRPORT_MULTICAST_ROUTER */
#endif
		+ 0;
}

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Stephen Hemminger
54
26.34%
4
22.22%
Vlad Yasevich
12
5.85%
2
11.11%
Felix Fietkau
6
2.93%
1
5.56%
Roopa Prabhu
6
2.93%
1
5.56%
Nicolas Dichtel
3
1.46%
1
5.56%
Total
205
100.00%
18
100.00%



static inline size_t br_nlmsg_size(struct net_device *dev, u32 filter_mask)
{
	return NLMSG_ALIGN(sizeof(struct ifinfomsg))
		+ nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */
		+ nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */
		+ nla_total_size(4) /* IFLA_MASTER */
		+ nla_total_size(4) /* IFLA_MTU */
		+ nla_total_size(4) /* IFLA_LINK */
		+ nla_total_size(1) /* IFLA_OPERSTATE */
		+ nla_total_size(br_port_info_size()) /* IFLA_PROTINFO */
		+ nla_total_size(br_get_link_af_size_filtered(dev,
				 filter_mask)); /* IFLA_AF_SPEC */
}

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24.05%
2
50.00%
Stephen Hemminger
2
2.53%
1
25.00%
Total
79
100.00%
4
100.00%



static int br_port_fill_attrs(struct sk_buff *skb,
			      const struct net_bridge_port *p)
{
	u8 mode = !!(p->flags & BR_HAIRPIN_MODE);
	u64 timerval;

	if (nla_put_u8(skb, IFLA_BRPORT_STATE, p->state) ||
	    nla_put_u16(skb, IFLA_BRPORT_PRIORITY, p->priority) ||
	    nla_put_u32(skb, IFLA_BRPORT_COST, p->path_cost) ||
	    nla_put_u8(skb, IFLA_BRPORT_MODE, mode) ||
	    nla_put_u8(skb, IFLA_BRPORT_GUARD, !!(p->flags & BR_BPDU_GUARD)) ||
	    nla_put_u8(skb, IFLA_BRPORT_PROTECT,
		       !!(p->flags & BR_ROOT_BLOCK)) ||
	    nla_put_u8(skb, IFLA_BRPORT_FAST_LEAVE,
		       !!(p->flags & BR_MULTICAST_FAST_LEAVE)) ||
	    nla_put_u8(skb, IFLA_BRPORT_MCAST_TO_UCAST,
		       !!(p->flags & BR_MULTICAST_TO_UNICAST)) ||
	    nla_put_u8(skb, IFLA_BRPORT_LEARNING, !!(p->flags & BR_LEARNING)) ||
	    nla_put_u8(skb, IFLA_BRPORT_UNICAST_FLOOD,
		       !!(p->flags & BR_FLOOD)) ||
	    nla_put_u8(skb, IFLA_BRPORT_MCAST_FLOOD,
		       !!(p->flags & BR_MCAST_FLOOD)) ||
	    nla_put_u8(skb, IFLA_BRPORT_PROXYARP, !!(p->flags & BR_PROXYARP)) ||
	    nla_put_u8(skb, IFLA_BRPORT_PROXYARP_WIFI,
		       !!(p->flags & BR_PROXYARP_WIFI)) ||
	    nla_put(skb, IFLA_BRPORT_ROOT_ID, sizeof(struct ifla_bridge_id),
		    &p->designated_root) ||
	    nla_put(skb, IFLA_BRPORT_BRIDGE_ID, sizeof(struct ifla_bridge_id),
		    &p->designated_bridge) ||
	    nla_put_u16(skb, IFLA_BRPORT_DESIGNATED_PORT, p->designated_port) ||
	    nla_put_u16(skb, IFLA_BRPORT_DESIGNATED_COST, p->designated_cost) ||
	    nla_put_u16(skb, IFLA_BRPORT_ID, p->port_id) ||
	    nla_put_u16(skb, IFLA_BRPORT_NO, p->port_no) ||
	    nla_put_u8(skb, IFLA_BRPORT_TOPOLOGY_CHANGE_ACK,
		       p->topology_change_ack) ||
	    nla_put_u8(skb, IFLA_BRPORT_CONFIG_PENDING, p->config_pending) ||
	    nla_put_u8(skb, IFLA_BRPORT_VLAN_TUNNEL, !!(p->flags &
							BR_VLAN_TUNNEL)))
		return -EMSGSIZE;

	timerval = br_timer_value(&p->message_age_timer);
	if (nla_put_u64_64bit(skb, IFLA_BRPORT_MESSAGE_AGE_TIMER, timerval,
			      IFLA_BRPORT_PAD))
		return -EMSGSIZE;
	timerval = br_timer_value(&p->forward_delay_timer);
	if (nla_put_u64_64bit(skb, IFLA_BRPORT_FORWARD_DELAY_TIMER, timerval,
			      IFLA_BRPORT_PAD))
		return -EMSGSIZE;
	timerval = br_timer_value(&p->hold_timer);
	if (nla_put_u64_64bit(skb, IFLA_BRPORT_HOLD_TIMER, timerval,
			      IFLA_BRPORT_PAD))
		return -EMSGSIZE;

#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
	if (nla_put_u8(skb, IFLA_BRPORT_MULTICAST_ROUTER,
		       p->multicast_router))
		return -EMSGSIZE;
#endif

	return 0;
}

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115
25.05%
3
15.79%
Vlad Yasevich
34
7.41%
2
10.53%
Felix Fietkau
17
3.70%
1
5.26%
Jouni Malinen
17
3.70%
1
5.26%
Kyeyoon Park
17
3.70%
1
5.26%
David S. Miller
17
3.70%
1
5.26%
Roopa Prabhu
17
3.70%
1
5.26%
Nicolas Dichtel
9
1.96%
1
5.26%
Total
459
100.00%
19
100.00%



static int br_fill_ifvlaninfo_range(struct sk_buff *skb, u16 vid_start,
				    u16 vid_end, u16 flags)
{
	struct  bridge_vlan_info vinfo;

	if ((vid_end - vid_start) > 0) {
		/* add range to skb */
		vinfo.vid = vid_start;
		vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_BEGIN;
		if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
			    sizeof(vinfo), &vinfo))
			goto nla_put_failure;

		vinfo.vid = vid_end;
		vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_END;
		if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
			    sizeof(vinfo), &vinfo))
			goto nla_put_failure;
	} else {
		vinfo.vid = vid_start;
		vinfo.flags = flags;
		if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
			    sizeof(vinfo), &vinfo))
			goto nla_put_failure;
	}

	return 0;

nla_put_failure:
	return -EMSGSIZE;
}

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static int br_fill_ifvlaninfo_compressed(struct sk_buff *skb,
					 struct net_bridge_vlan_group *vg)
{
	struct net_bridge_vlan *v;
	u16 vid_range_start = 0, vid_range_end = 0, vid_range_flags = 0;
	u16 flags, pvid;
	int err = 0;

	/* Pack IFLA_BRIDGE_VLAN_INFO's for every vlan
         * and mark vlan info with begin and end flags
         * if vlaninfo represents a range
         */
	pvid = br_get_pvid(vg);
	list_for_each_entry_rcu(v, &vg->vlan_list, vlist) {
		flags = 0;
		if (!br_vlan_should_use(v))
			continue;
		if (v->vid == pvid)
			flags |= BRIDGE_VLAN_INFO_PVID;

		if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)
			flags |= BRIDGE_VLAN_INFO_UNTAGGED;

		if (vid_range_start == 0) {
			goto initvars;
		} else if ((v->vid - vid_range_end) == 1 &&
			flags == vid_range_flags) {
			vid_range_end = v->vid;
			continue;
		} else {
			err = br_fill_ifvlaninfo_range(skb, vid_range_start,
						       vid_range_end,
						       vid_range_flags);
			if (err)
				return err;
		}

initvars:
		vid_range_start = v->vid;
		vid_range_end = v->vid;
		vid_range_flags = flags;
	}

	if (vid_range_start != 0) {
		/* Call it once more to send any left over vlans */
		err = br_fill_ifvlaninfo_range(skb, vid_range_start,
					       vid_range_end,
					       vid_range_flags);
		if (err)
			return err;
	}

	return 0;
}

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209
100.00%
5
100.00%



static int br_fill_ifvlaninfo(struct sk_buff *skb,
			      struct net_bridge_vlan_group *vg)
{
	struct bridge_vlan_info vinfo;
	struct net_bridge_vlan *v;
	u16 pvid;

	pvid = br_get_pvid(vg);
	list_for_each_entry_rcu(v, &vg->vlan_list, vlist) {
		if (!br_vlan_should_use(v))
			continue;

		vinfo.vid = v->vid;
		vinfo.flags = 0;
		if (v->vid == pvid)
			vinfo.flags |= BRIDGE_VLAN_INFO_PVID;

		if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)
			vinfo.flags |= BRIDGE_VLAN_INFO_UNTAGGED;

		if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
			    sizeof(vinfo), &vinfo))
			goto nla_put_failure;
	}

	return 0;

nla_put_failure:
	return -EMSGSIZE;
}

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125
100.00%
4
100.00%

/*
 * Create one netlink message for one interface
 * Contains port and master info as well as carrier and bridge state.
 */


static int br_fill_ifinfo(struct sk_buff *skb,
			  struct net_bridge_port *port,
			  u32 pid, u32 seq, int event, unsigned int flags,
			  u32 filter_mask, const struct net_device *dev)
{
	struct net_bridge *br;
	struct ifinfomsg *hdr;
	struct nlmsghdr *nlh;
	u8 operstate = netif_running(dev) ? dev->operstate : IF_OPER_DOWN;

	if (port)
		br = port->br;
	else
		br = netdev_priv(dev);

	br_debug(br, "br_fill_info event %d port %s master %s\n",
		     event, dev->name, br->dev->name);

	nlh = nlmsg_put(skb, pid, seq, event, sizeof(*hdr), flags);
	if (nlh == NULL)
		return -EMSGSIZE;

	hdr = nlmsg_data(nlh);
	hdr->ifi_family = AF_BRIDGE;
	hdr->__ifi_pad = 0;
	hdr->ifi_type = dev->type;
	hdr->ifi_index = dev->ifindex;
	hdr->ifi_flags = dev_get_flags(dev);
	hdr->ifi_change = 0;

	if (nla_put_string(skb, IFLA_IFNAME, dev->name) ||
	    nla_put_u32(skb, IFLA_MASTER, br->dev->ifindex) ||
	    nla_put_u32(skb, IFLA_MTU, dev->mtu) ||
	    nla_put_u8(skb, IFLA_OPERSTATE, operstate) ||
	    (dev->addr_len &&
	     nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr)) ||
	    (dev->ifindex != dev_get_iflink(dev) &&
	     nla_put_u32(skb, IFLA_LINK, dev_get_iflink(dev))))
		goto nla_put_failure;

	if (event == RTM_NEWLINK && port) {
		struct nlattr *nest
			= nla_nest_start(skb, IFLA_PROTINFO | NLA_F_NESTED);

		if (nest == NULL || br_port_fill_attrs(skb, port) < 0)
			goto nla_put_failure;
		nla_nest_end(skb, nest);
	}

	/* Check if  the VID information is requested */
	if ((filter_mask & RTEXT_FILTER_BRVLAN) ||
	    (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) {
		struct net_bridge_vlan_group *vg;
		struct nlattr *af;
		int err;

		/* RCU needed because of the VLAN locking rules (rcu || rtnl) */
		rcu_read_lock();
		if (port)
			vg = nbp_vlan_group_rcu(port);
		else
			vg = br_vlan_group_rcu(br);

		if (!vg || !vg->num_vlans) {
			rcu_read_unlock();
			goto done;
		}
		af = nla_nest_start(skb, IFLA_AF_SPEC);
		if (!af) {
			rcu_read_unlock();
			goto nla_put_failure;
		}
		if (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)
			err = br_fill_ifvlaninfo_compressed(skb, vg);
		else
			err = br_fill_ifvlaninfo(skb, vg);

		if (port && (port->flags & BR_VLAN_TUNNEL))
			err = br_fill_vlan_tunnel_info(skb, vg);
		rcu_read_unlock();
		if (err)
			goto nla_put_failure;
		nla_nest_end(skb, af);
	}

done:
	nlmsg_end(skb, nlh);
	return 0;

nla_put_failure:
	nlmsg_cancel(skb, nlh);
	return -EMSGSIZE;
}

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20.67%
3
20.00%
Roopa Prabhu
48
9.45%
2
13.33%
Thomas Graf
46
9.06%
1
6.67%
Nikolay Aleksandrov
34
6.69%
2
13.33%
David S. Miller
23
4.53%
1
6.67%
Nicolas Dichtel
6
1.18%
1
6.67%
Patrick McHardy
5
0.98%
1
6.67%
Johannes Berg
3
0.59%
1
6.67%
Total
508
100.00%
15
100.00%

/*
 * Notify listeners of a change in port information
 */


void br_ifinfo_notify(int event, struct net_bridge_port *port)
{
	struct net *net;
	struct sk_buff *skb;
	int err = -ENOBUFS;
	u32 filter = RTEXT_FILTER_BRVLAN_COMPRESSED;

	if (!port)
		return;

	net = dev_net(port->dev);
	br_debug(port->br, "port %u(%s) event %d\n",
		 (unsigned int)port->port_no, port->dev->name, event);

	skb = nlmsg_new(br_nlmsg_size(port->dev, filter), GFP_ATOMIC);
	if (skb == NULL)
		goto errout;

	err = br_fill_ifinfo(skb, port, 0, 0, event, 0, filter, port->dev);
	if (err < 0) {
		/* -EMSGSIZE implies BUG in br_nlmsg_size() */
		WARN_ON(err == -EMSGSIZE);
		kfree_skb(skb);
		goto errout;
	}
	rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC);
	return;
errout:
	rtnl_set_sk_err(net, RTNLGRP_LINK, err);
}


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11.49%
1
7.14%
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20
11.49%
2
14.29%
Thomas Graf
13
7.47%
2
14.29%
Roopa Prabhu
13
7.47%
2
14.29%
Alexey Dobriyan
7
4.02%
1
7.14%
Denis V. Lunev
2
1.15%
1
7.14%
Eric Dumazet
1
0.57%
1
7.14%
Pablo Neira Ayuso
1
0.57%
1
7.14%
Total
174
100.00%
14
100.00%

/*
 * Dump information about all ports, in response to GETLINK
 */


int br_getlink(struct sk_buff *skb, u32 pid, u32 seq,
	       struct net_device *dev, u32 filter_mask, int nlflags)
{
	struct net_bridge_port *port = br_port_get_rtnl(dev);

	if (!port && !(filter_mask & RTEXT_FILTER_BRVLAN) &&
	    !(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED))
		return 0;

	return br_fill_ifinfo(skb, port, pid, seq, RTM_NEWLINK, nlflags,
			      filter_mask, dev);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Stephen Hemminger
36
45.57%
2
20.00%
Vlad Yasevich
14
17.72%
1
10.00%
John Fastabend
11
13.92%
1
10.00%
Roopa Prabhu
7
8.86%
1
10.00%
Nicolas Dichtel
4
5.06%
1
10.00%
Dan Carpenter
4
5.06%
1
10.00%
Denis V. Lunev
1
1.27%
1
10.00%
Jiri Pirko
1
1.27%
1
10.00%
Hong Zhi Guo
1
1.27%
1
10.00%
Total
79
100.00%
10
100.00%



static int br_vlan_info(struct net_bridge *br, struct net_bridge_port *p,
			int cmd, struct bridge_vlan_info *vinfo)
{
	int err = 0;

	switch (cmd) {
	case RTM_SETLINK:
		if (p) {
			/* if the MASTER flag is set this will act on the global
                         * per-VLAN entry as well
                         */
			err = nbp_vlan_add(p, vinfo->vid, vinfo->flags);
			if (err)
				break;
		} else {
			vinfo->flags |= BRIDGE_VLAN_INFO_BRENTRY;
			err = br_vlan_add(br, vinfo->vid, vinfo->flags);
		}
		break;

	case RTM_DELLINK:
		if (p) {
			nbp_vlan_delete(p, vinfo->vid);
			if (vinfo->flags & BRIDGE_VLAN_INFO_MASTER)
				br_vlan_delete(p->br, vinfo->vid);
		} else {
			br_vlan_delete(br, vinfo->vid);
		}
		break;
	}

	return err;
}

Contributors
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CommitProp
Vlad Yasevich
122
85.31%
2
50.00%
Roopa Prabhu
15
10.49%
1
25.00%
Nikolay Aleksandrov
6
4.20%
1
25.00%
Total
143
100.00%
4
100.00%



static int br_process_vlan_info(struct net_bridge *br,
				struct net_bridge_port *p, int cmd,
				struct bridge_vlan_info *vinfo_curr,
				struct bridge_vlan_info **vinfo_last)
{
	if (!vinfo_curr->vid || vinfo_curr->vid >= VLAN_VID_MASK)
		return -EINVAL;

	if (vinfo_curr->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) {
		/* check if we are already processing a range */
		if (*vinfo_last)
			return -EINVAL;
		*vinfo_last = vinfo_curr;
		/* don't allow range of pvids */
		if ((*vinfo_last)->flags & BRIDGE_VLAN_INFO_PVID)
			return -EINVAL;
		return 0;
	}

	if (*vinfo_last) {
		struct bridge_vlan_info tmp_vinfo;
		int v, err;

		if (!(vinfo_curr->flags & BRIDGE_VLAN_INFO_RANGE_END))
			return -EINVAL;

		if (vinfo_curr->vid <= (*vinfo_last)->vid)
			return -EINVAL;

		memcpy(&tmp_vinfo, *vinfo_last,
		       sizeof(struct bridge_vlan_info));
		for (v = (*vinfo_last)->vid; v <= vinfo_curr->vid; v++) {
			tmp_vinfo.vid = v;
			err = br_vlan_info(br, p, cmd, &tmp_vinfo);
			if (err)
				break;
		}
		*vinfo_last = NULL;

		return 0;
	}

	return br_vlan_info(br, p, cmd, vinfo_curr);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Roopa Prabhu
192
86.88%
2
40.00%
Nikolay Aleksandrov
27
12.22%
2
40.00%
Vlad Yasevich
2
0.90%
1
20.00%
Total
221
100.00%
5
100.00%



static int br_afspec(struct net_bridge *br,
		     struct net_bridge_port *p,
		     struct nlattr *af_spec,
		     int cmd)
{
	struct bridge_vlan_info *vinfo_curr = NULL;
	struct bridge_vlan_info *vinfo_last = NULL;
	struct nlattr *attr;
	struct vtunnel_info tinfo_last = {};
	struct vtunnel_info tinfo_curr = {};
	int err = 0, rem;

	nla_for_each_nested(attr, af_spec, rem) {
		err = 0;
		switch (nla_type(attr)) {
		case IFLA_BRIDGE_VLAN_TUNNEL_INFO:
			if (!(p->flags & BR_VLAN_TUNNEL))
				return -EINVAL;
			err = br_parse_vlan_tunnel_info(attr, &tinfo_curr);
			if (err)
				return err;
			err = br_process_vlan_tunnel_info(br, p, cmd,
							  &tinfo_curr,
							  &tinfo_last);
			if (err)
				return