[PATCH net-next 0/8] bridge: netlink: complete port attribute support

[PATCH net-next 0/8] bridge: netlink: complete port attribute support

[Nikolay Aleksandrov]

From: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>

Hi,
This is the second set that completes the bridge port's netlink support and
makes everything from sysfs available via netlink. I've used sysfs as a
guide of what and how to set again. I've tested setting/getting every
option and also this time tested enabling KASAN. Again there're a few long
line warnings about the ifla attribute names in br_port_info_size() but
as the previous set - it's good to know what's been accounted for.

Cheers,
 Nik

Nikolay Aleksandrov (8):
  bridge: netlink: export port's root id
  bridge: netlink: export port's bridge id
  bridge: netlink: export port's designated cost and port
  bridge: netlink: export port's id and number
  bridge: netlink: export port's topology_change_ack and config_pending
  bridge: netlink: export port's timer values
  bridge: netlink: allow to flush port's fdb
  bridge: netlink: add support for port's multicast_router attribute

 include/uapi/linux/if_link.h | 13 ++++++++++
 net/bridge/br_netlink.c      | 57 +++++++++++++++++++++++++++++++++++++++++++-
 2 files changed, 69 insertions(+), 1 deletion(-)

-- 
2.4.3

[PATCH net-next 1/8] bridge: netlink: export port's root id

[Nikolay Aleksandrov]

From: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>

Add IFLA_BRPORT_ROOT_ID to allow getting the designated root id via
netlink.

Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
---
 include/uapi/linux/if_link.h | 1 +
 net/bridge/br_netlink.c      | 5 ++++-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/include/uapi/linux/if_link.h b/include/uapi/linux/if_link.h
index c5b15bfeabe2..c45c1d7894e7 100644
--- a/include/uapi/linux/if_link.h
+++ b/include/uapi/linux/if_link.h
@@ -292,6 +292,7 @@ enum {
 	IFLA_BRPORT_PROXYARP,	/* proxy ARP */
 	IFLA_BRPORT_LEARNING_SYNC, /* mac learning sync from device */
 	IFLA_BRPORT_PROXYARP_WIFI, /* proxy ARP for Wi-Fi */
+	IFLA_BRPORT_ROOT_ID,	/* designated root */
 	__IFLA_BRPORT_MAX
 };
 #define IFLA_BRPORT_MAX (__IFLA_BRPORT_MAX - 1)
diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c
index 330abf4b033a..cad4050310ee 100644
--- a/net/bridge/br_netlink.c
+++ b/net/bridge/br_netlink.c
@@ -127,6 +127,7 @@ static inline size_t br_port_info_size(void)
 		+ 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(sizeof(struct ifla_bridge_id))	/* IFLA_BRPORT_ROOT_ID */
 		+ 0;
 }
 
@@ -160,7 +161,9 @@ static int br_port_fill_attrs(struct sk_buff *skb,
 	    nla_put_u8(skb, IFLA_BRPORT_UNICAST_FLOOD, !!(p->flags & BR_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)))
+		       !!(p->flags & BR_PROXYARP_WIFI)) ||
+	    nla_put(skb, IFLA_BRPORT_ROOT_ID, sizeof(struct ifla_bridge_id),
+		    &p->designated_root))
 		return -EMSGSIZE;
 
 	return 0;
-- 
2.4.3

Re: [PATCH net-next 1/8] bridge: netlink: export port's root id

[kbuild test robot]

[-- Attachment #1: Type: text/plain, Size: 1813 bytes --]

Hi Nikolay,

[auto build test ERROR on v4.3-rc4 -- if it's inappropriate base, please ignore]

config: x86_64-randconfig-x016-201540 (attached as .config)
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All error/warnings (new ones prefixed by >>):

   net/bridge/br_netlink.c: In function 'br_port_info_size':
>> net/bridge/br_netlink.c:116:27: error: invalid application of 'sizeof' to incomplete type 'struct ifla_bridge_id'
      + nla_total_size(sizeof(struct ifla_bridge_id)) /* IFLA_BRPORT_ROOT_ID */
                              ^
   net/bridge/br_netlink.c: In function 'br_port_fill_attrs':
   net/bridge/br_netlink.c:151:47: error: invalid application of 'sizeof' to incomplete type 'struct ifla_bridge_id'
         nla_put(skb, IFLA_BRPORT_ROOT_ID, sizeof(struct ifla_bridge_id),
                                                  ^
   net/bridge/br_netlink.c: In function 'br_port_info_size':
>> net/bridge/br_netlink.c:118:1: warning: control reaches end of non-void function [-Wreturn-type]
    }
    ^

vim +116 net/bridge/br_netlink.c

   110			+ nla_total_size(1)	/* IFLA_BRPORT_PROTECT */
   111			+ nla_total_size(1)	/* IFLA_BRPORT_FAST_LEAVE */
   112			+ nla_total_size(1)	/* IFLA_BRPORT_LEARNING */
   113			+ nla_total_size(1)	/* IFLA_BRPORT_UNICAST_FLOOD */
   114			+ nla_total_size(1)	/* IFLA_BRPORT_PROXYARP */
   115			+ nla_total_size(1)	/* IFLA_BRPORT_PROXYARP_WIFI */
 > 116			+ nla_total_size(sizeof(struct ifla_bridge_id))	/* IFLA_BRPORT_ROOT_ID */
   117			+ 0;
 > 118	}
   119	
   120	static inline size_t br_nlmsg_size(struct net_device *dev, u32 filter_mask)
   121	{

---
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[-- Attachment #2: .config.gz --]
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Re: [PATCH net-next 1/8] bridge: netlink: export port's root id

[Nikolay Aleksandrov]

On 10/06/2015 02:30 PM, kbuild test robot wrote:
> Hi Nikolay,
> 
> [auto build test ERROR on v4.3-rc4 -- if it's inappropriate base, please ignore]
> 
> config: x86_64-randconfig-x016-201540 (attached as .config)
> reproduce:
>         # save the attached .config to linux build tree
>         make ARCH=x86_64 
> 
> All error/warnings (new ones prefixed by >>):
> 
>    net/bridge/br_netlink.c: In function 'br_port_info_size':
>>> net/bridge/br_netlink.c:116:27: error: invalid application of 'sizeof' to incomplete type 'struct ifla_bridge_id'
>       + nla_total_size(sizeof(struct ifla_bridge_id)) /* IFLA_BRPORT_ROOT_ID */
>                               ^
>    net/bridge/br_netlink.c: In function 'br_port_fill_attrs':
>    net/bridge/br_netlink.c:151:47: error: invalid application of 'sizeof' to incomplete type 'struct ifla_bridge_id'
>          nla_put(skb, IFLA_BRPORT_ROOT_ID, sizeof(struct ifla_bridge_id),
>                                                   ^
>    net/bridge/br_netlink.c: In function 'br_port_info_size':
>>> net/bridge/br_netlink.c:118:1: warning: control reaches end of non-void function [-Wreturn-type]
>     }
>     ^

This is incorrect, the structure is in net-next. My previous set introduced it:
commit 5127c81f84de ("bridge: netlink: export root id")

Cheers,
 Nik

Re: [PATCH net-next 1/8] bridge: netlink: export port's root id

[kbuild test robot]

[-- Attachment #1: Type: text/plain, Size: 13119 bytes --]

Hi Nikolay,

[auto build test WARNING on v4.3-rc4 -- if it's inappropriate base, please ignore]

config: i386-randconfig-x006-201540 (attached as .config)
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All warnings (new ones prefixed by >>):

   net/bridge/br_netlink.c: In function 'br_port_info_size':
   net/bridge/br_netlink.c:116:27: error: invalid application of 'sizeof' to incomplete type 'struct ifla_bridge_id'
      + nla_total_size(sizeof(struct ifla_bridge_id)) /* IFLA_BRPORT_ROOT_ID */
                              ^
   In file included from include/linux/linkage.h:4:0,
                    from include/linux/kernel.h:6,
                    from net/bridge/br_netlink.c:13:
   net/bridge/br_netlink.c: In function 'br_port_fill_attrs':
   net/bridge/br_netlink.c:151:47: error: invalid application of 'sizeof' to incomplete type 'struct ifla_bridge_id'
         nla_put(skb, IFLA_BRPORT_ROOT_ID, sizeof(struct ifla_bridge_id),
                                                  ^
   include/linux/compiler.h:147:28: note: in definition of macro '__trace_if'
     if (__builtin_constant_p((cond)) ? !!(cond) :   \
                               ^
>> net/bridge/br_netlink.c:139:2: note: in expansion of macro 'if'
     if (nla_put_u8(skb, IFLA_BRPORT_STATE, p->state) ||
     ^
   net/bridge/br_netlink.c:151:47: error: invalid application of 'sizeof' to incomplete type 'struct ifla_bridge_id'
         nla_put(skb, IFLA_BRPORT_ROOT_ID, sizeof(struct ifla_bridge_id),
                                                  ^
   include/linux/compiler.h:147:40: note: in definition of macro '__trace_if'
     if (__builtin_constant_p((cond)) ? !!(cond) :   \
                                           ^
>> net/bridge/br_netlink.c:139:2: note: in expansion of macro 'if'
     if (nla_put_u8(skb, IFLA_BRPORT_STATE, p->state) ||
     ^
   net/bridge/br_netlink.c:151:47: error: invalid application of 'sizeof' to incomplete type 'struct ifla_bridge_id'
         nla_put(skb, IFLA_BRPORT_ROOT_ID, sizeof(struct ifla_bridge_id),
                                                  ^
   include/linux/compiler.h:158:16: note: in definition of macro '__trace_if'
      ______r = !!(cond);     \
                   ^
>> net/bridge/br_netlink.c:139:2: note: in expansion of macro 'if'
     if (nla_put_u8(skb, IFLA_BRPORT_STATE, p->state) ||
     ^
   net/bridge/br_netlink.c: In function 'br_port_info_size':
   net/bridge/br_netlink.c:118:1: warning: control reaches end of non-void function [-Wreturn-type]
    }
    ^

vim +/if +139 net/bridge/br_netlink.c

11dc1f36 Stephen Hemminger   2006-05-25    7   *	This program is free software; you can redistribute it and/or
11dc1f36 Stephen Hemminger   2006-05-25    8   *	modify it under the terms of the GNU General Public License
11dc1f36 Stephen Hemminger   2006-05-25    9   *	as published by the Free Software Foundation; either version
11dc1f36 Stephen Hemminger   2006-05-25   10   *	2 of the License, or (at your option) any later version.
11dc1f36 Stephen Hemminger   2006-05-25   11   */
11dc1f36 Stephen Hemminger   2006-05-25   12  
11dc1f36 Stephen Hemminger   2006-05-25  @13  #include <linux/kernel.h>
5a0e3ad6 Tejun Heo           2010-03-24   14  #include <linux/slab.h>
bb900b27 stephen hemminger   2011-04-04   15  #include <linux/etherdevice.h>
32fe21c0 Thomas Graf         2007-03-22   16  #include <net/rtnetlink.h>
881d966b Eric W. Biederman   2007-09-17   17  #include <net/net_namespace.h>
b854272b Denis V. Lunev      2007-12-01   18  #include <net/sock.h>
407af329 Vlad Yasevich       2013-02-13   19  #include <uapi/linux/if_bridge.h>
bb900b27 stephen hemminger   2011-04-04   20  
11dc1f36 Stephen Hemminger   2006-05-25   21  #include "br_private.h"
b03b6dd5 Vitalii Demianets   2011-11-25   22  #include "br_private_stp.h"
11dc1f36 Stephen Hemminger   2006-05-25   23  
fed0a159 Roopa Prabhu        2015-02-25   24  static int br_get_num_vlan_infos(const struct net_port_vlans *pv,
fed0a159 Roopa Prabhu        2015-02-25   25  				 u32 filter_mask)
fed0a159 Roopa Prabhu        2015-02-25   26  {
fed0a159 Roopa Prabhu        2015-02-25   27  	u16 vid_range_start = 0, vid_range_end = 0;
fed0a159 Roopa Prabhu        2015-02-25   28  	u16 vid_range_flags = 0;
fed0a159 Roopa Prabhu        2015-02-25   29  	u16 pvid, vid, flags;
fed0a159 Roopa Prabhu        2015-02-25   30  	int num_vlans = 0;
fed0a159 Roopa Prabhu        2015-02-25   31  
fed0a159 Roopa Prabhu        2015-02-25   32  	if (filter_mask & RTEXT_FILTER_BRVLAN)
fed0a159 Roopa Prabhu        2015-02-25   33  		return pv->num_vlans;
fed0a159 Roopa Prabhu        2015-02-25   34  
fed0a159 Roopa Prabhu        2015-02-25   35  	if (!(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED))
fed0a159 Roopa Prabhu        2015-02-25   36  		return 0;
fed0a159 Roopa Prabhu        2015-02-25   37  
fed0a159 Roopa Prabhu        2015-02-25   38  	/* Count number of vlan info's
fed0a159 Roopa Prabhu        2015-02-25   39  	 */
fed0a159 Roopa Prabhu        2015-02-25   40  	pvid = br_get_pvid(pv);
fed0a159 Roopa Prabhu        2015-02-25   41  	for_each_set_bit(vid, pv->vlan_bitmap, VLAN_N_VID) {
fed0a159 Roopa Prabhu        2015-02-25   42  		flags = 0;
fed0a159 Roopa Prabhu        2015-02-25   43  		if (vid == pvid)
fed0a159 Roopa Prabhu        2015-02-25   44  			flags |= BRIDGE_VLAN_INFO_PVID;
fed0a159 Roopa Prabhu        2015-02-25   45  
fed0a159 Roopa Prabhu        2015-02-25   46  		if (test_bit(vid, pv->untagged_bitmap))
fed0a159 Roopa Prabhu        2015-02-25   47  			flags |= BRIDGE_VLAN_INFO_UNTAGGED;
fed0a159 Roopa Prabhu        2015-02-25   48  
fed0a159 Roopa Prabhu        2015-02-25   49  		if (vid_range_start == 0) {
fed0a159 Roopa Prabhu        2015-02-25   50  			goto initvars;
fed0a159 Roopa Prabhu        2015-02-25   51  		} else if ((vid - vid_range_end) == 1 &&
fed0a159 Roopa Prabhu        2015-02-25   52  			flags == vid_range_flags) {
fed0a159 Roopa Prabhu        2015-02-25   53  			vid_range_end = vid;
fed0a159 Roopa Prabhu        2015-02-25   54  			continue;
fed0a159 Roopa Prabhu        2015-02-25   55  		} else {
fed0a159 Roopa Prabhu        2015-02-25   56  			if ((vid_range_end - vid_range_start) > 0)
fed0a159 Roopa Prabhu        2015-02-25   57  				num_vlans += 2;
fed0a159 Roopa Prabhu        2015-02-25   58  			else
fed0a159 Roopa Prabhu        2015-02-25   59  				num_vlans += 1;
fed0a159 Roopa Prabhu        2015-02-25   60  		}
fed0a159 Roopa Prabhu        2015-02-25   61  initvars:
fed0a159 Roopa Prabhu        2015-02-25   62  		vid_range_start = vid;
fed0a159 Roopa Prabhu        2015-02-25   63  		vid_range_end = vid;
fed0a159 Roopa Prabhu        2015-02-25   64  		vid_range_flags = flags;
fed0a159 Roopa Prabhu        2015-02-25   65  	}
fed0a159 Roopa Prabhu        2015-02-25   66  
fed0a159 Roopa Prabhu        2015-02-25   67  	if (vid_range_start != 0) {
fed0a159 Roopa Prabhu        2015-02-25   68  		if ((vid_range_end - vid_range_start) > 0)
fed0a159 Roopa Prabhu        2015-02-25   69  			num_vlans += 2;
fed0a159 Roopa Prabhu        2015-02-25   70  		else
fed0a159 Roopa Prabhu        2015-02-25   71  			num_vlans += 1;
fed0a159 Roopa Prabhu        2015-02-25   72  	}
fed0a159 Roopa Prabhu        2015-02-25   73  
fed0a159 Roopa Prabhu        2015-02-25   74  	return num_vlans;
fed0a159 Roopa Prabhu        2015-02-25   75  }
fed0a159 Roopa Prabhu        2015-02-25   76  
fed0a159 Roopa Prabhu        2015-02-25   77  static size_t br_get_link_af_size_filtered(const struct net_device *dev,
fed0a159 Roopa Prabhu        2015-02-25   78  					   u32 filter_mask)
b7853d73 Roopa Prabhu        2015-02-21   79  {
b7853d73 Roopa Prabhu        2015-02-21   80  	struct net_port_vlans *pv;
fed0a159 Roopa Prabhu        2015-02-25   81  	int num_vlan_infos;
b7853d73 Roopa Prabhu        2015-02-21   82  
2f56f6be Johannes Berg       2015-03-03   83  	rcu_read_lock();
b7853d73 Roopa Prabhu        2015-02-21   84  	if (br_port_exists(dev))
2f56f6be Johannes Berg       2015-03-03   85  		pv = nbp_get_vlan_info(br_port_get_rcu(dev));
b7853d73 Roopa Prabhu        2015-02-21   86  	else if (dev->priv_flags & IFF_EBRIDGE)
b7853d73 Roopa Prabhu        2015-02-21   87  		pv = br_get_vlan_info((struct net_bridge *)netdev_priv(dev));
b7853d73 Roopa Prabhu        2015-02-21   88  	else
2f56f6be Johannes Berg       2015-03-03   89  		pv = NULL;
2f56f6be Johannes Berg       2015-03-03   90  	if (pv)
fed0a159 Roopa Prabhu        2015-02-25   91  		num_vlan_infos = br_get_num_vlan_infos(pv, filter_mask);
2f56f6be Johannes Berg       2015-03-03   92  	else
2f56f6be Johannes Berg       2015-03-03   93  		num_vlan_infos = 0;
2f56f6be Johannes Berg       2015-03-03   94  	rcu_read_unlock();
2f56f6be Johannes Berg       2015-03-03   95  
fed0a159 Roopa Prabhu        2015-02-25   96  	if (!num_vlan_infos)
fed0a159 Roopa Prabhu        2015-02-25   97  		return 0;
fed0a159 Roopa Prabhu        2015-02-25   98  
b7853d73 Roopa Prabhu        2015-02-21   99  	/* Each VLAN is returned in bridge_vlan_info along with flags */
fed0a159 Roopa Prabhu        2015-02-25  100  	return num_vlan_infos * nla_total_size(sizeof(struct bridge_vlan_info));
b7853d73 Roopa Prabhu        2015-02-21  101  }
b7853d73 Roopa Prabhu        2015-02-21  102  
25c71c75 stephen hemminger   2012-11-13  103  static inline size_t br_port_info_size(void)
25c71c75 stephen hemminger   2012-11-13  104  {
25c71c75 stephen hemminger   2012-11-13  105  	return nla_total_size(1)	/* IFLA_BRPORT_STATE  */
25c71c75 stephen hemminger   2012-11-13  106  		+ nla_total_size(2)	/* IFLA_BRPORT_PRIORITY */
25c71c75 stephen hemminger   2012-11-13  107  		+ nla_total_size(4)	/* IFLA_BRPORT_COST */
25c71c75 stephen hemminger   2012-11-13  108  		+ nla_total_size(1)	/* IFLA_BRPORT_MODE */
a2e01a65 stephen hemminger   2012-11-13  109  		+ nla_total_size(1)	/* IFLA_BRPORT_GUARD */
1007dd1a stephen hemminger   2012-11-13  110  		+ nla_total_size(1)	/* IFLA_BRPORT_PROTECT */
3da889b6 stephen hemminger   2013-03-11  111  		+ nla_total_size(1)	/* IFLA_BRPORT_FAST_LEAVE */
9ba18891 Vlad Yasevich       2013-06-05  112  		+ nla_total_size(1)	/* IFLA_BRPORT_LEARNING */
867a5943 Vlad Yasevich       2013-06-05  113  		+ nla_total_size(1)	/* IFLA_BRPORT_UNICAST_FLOOD */
355b9f9d Nikolay Aleksandrov 2015-08-04  114  		+ nla_total_size(1)	/* IFLA_BRPORT_PROXYARP */
786c2077 Nikolay Aleksandrov 2015-08-04  115  		+ nla_total_size(1)	/* IFLA_BRPORT_PROXYARP_WIFI */
1706db4b Nikolay Aleksandrov 2015-10-06  116  		+ nla_total_size(sizeof(struct ifla_bridge_id))	/* IFLA_BRPORT_ROOT_ID */
25c71c75 stephen hemminger   2012-11-13  117  		+ 0;
25c71c75 stephen hemminger   2012-11-13  118  }
25c71c75 stephen hemminger   2012-11-13  119  
fed0a159 Roopa Prabhu        2015-02-25  120  static inline size_t br_nlmsg_size(struct net_device *dev, u32 filter_mask)
339bf98f Thomas Graf         2006-11-10  121  {
339bf98f Thomas Graf         2006-11-10  122  	return NLMSG_ALIGN(sizeof(struct ifinfomsg))
339bf98f Thomas Graf         2006-11-10  123  		+ nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */
339bf98f Thomas Graf         2006-11-10  124  		+ nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */
339bf98f Thomas Graf         2006-11-10  125  		+ nla_total_size(4) /* IFLA_MASTER */
339bf98f Thomas Graf         2006-11-10  126  		+ nla_total_size(4) /* IFLA_MTU */
339bf98f Thomas Graf         2006-11-10  127  		+ nla_total_size(4) /* IFLA_LINK */
339bf98f Thomas Graf         2006-11-10  128  		+ nla_total_size(1) /* IFLA_OPERSTATE */
b7853d73 Roopa Prabhu        2015-02-21  129  		+ nla_total_size(br_port_info_size()) /* IFLA_PROTINFO */
fed0a159 Roopa Prabhu        2015-02-25  130  		+ nla_total_size(br_get_link_af_size_filtered(dev,
fed0a159 Roopa Prabhu        2015-02-25  131  				 filter_mask)); /* IFLA_AF_SPEC */
25c71c75 stephen hemminger   2012-11-13  132  }
25c71c75 stephen hemminger   2012-11-13  133  
25c71c75 stephen hemminger   2012-11-13  134  static int br_port_fill_attrs(struct sk_buff *skb,
25c71c75 stephen hemminger   2012-11-13  135  			      const struct net_bridge_port *p)
25c71c75 stephen hemminger   2012-11-13  136  {
25c71c75 stephen hemminger   2012-11-13  137  	u8 mode = !!(p->flags & BR_HAIRPIN_MODE);
25c71c75 stephen hemminger   2012-11-13  138  
25c71c75 stephen hemminger   2012-11-13 @139  	if (nla_put_u8(skb, IFLA_BRPORT_STATE, p->state) ||
25c71c75 stephen hemminger   2012-11-13  140  	    nla_put_u16(skb, IFLA_BRPORT_PRIORITY, p->priority) ||
25c71c75 stephen hemminger   2012-11-13  141  	    nla_put_u32(skb, IFLA_BRPORT_COST, p->path_cost) ||
a2e01a65 stephen hemminger   2012-11-13  142  	    nla_put_u8(skb, IFLA_BRPORT_MODE, mode) ||

:::::: The code at line 139 was first introduced by commit
:::::: 25c71c75ac87508528db053b818944f3650dd7a6 bridge: bridge port parameters over netlink

:::::: TO: stephen hemminger <shemminger@vyatta.com>
:::::: CC: David S. Miller <davem@davemloft.net>

---
0-DAY kernel test infrastructure                Open Source Technology Center
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[-- Attachment #2: .config.gz --]
[-- Type: application/octet-stream, Size: 30865 bytes --]

[PATCH net-next 2/8] bridge: netlink: export port's bridge id

[Nikolay Aleksandrov]

From: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>

Add IFLA_BRPORT_BRIDGE_ID to allow getting the designated bridge id via
netlink.

Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
---
 include/uapi/linux/if_link.h | 1 +
 net/bridge/br_netlink.c      | 5 ++++-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/include/uapi/linux/if_link.h b/include/uapi/linux/if_link.h
index c45c1d7894e7..e891c32c9993 100644
--- a/include/uapi/linux/if_link.h
+++ b/include/uapi/linux/if_link.h
@@ -293,6 +293,7 @@ enum {
 	IFLA_BRPORT_LEARNING_SYNC, /* mac learning sync from device */
 	IFLA_BRPORT_PROXYARP_WIFI, /* proxy ARP for Wi-Fi */
 	IFLA_BRPORT_ROOT_ID,	/* designated root */
+	IFLA_BRPORT_BRIDGE_ID,	/* designated bridge */
 	__IFLA_BRPORT_MAX
 };
 #define IFLA_BRPORT_MAX (__IFLA_BRPORT_MAX - 1)
diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c
index cad4050310ee..c3e0b73d660d 100644
--- a/net/bridge/br_netlink.c
+++ b/net/bridge/br_netlink.c
@@ -128,6 +128,7 @@ static inline size_t br_port_info_size(void)
 		+ nla_total_size(1)	/* IFLA_BRPORT_PROXYARP */
 		+ nla_total_size(1)	/* IFLA_BRPORT_PROXYARP_WIFI */
 		+ nla_total_size(sizeof(struct ifla_bridge_id))	/* IFLA_BRPORT_ROOT_ID */
+		+ nla_total_size(sizeof(struct ifla_bridge_id))	/* IFLA_BRPORT_BRIDGE_ID */
 		+ 0;
 }
 
@@ -163,7 +164,9 @@ static int br_port_fill_attrs(struct sk_buff *skb,
 	    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))
+		    &p->designated_root) ||
+	    nla_put(skb, IFLA_BRPORT_BRIDGE_ID, sizeof(struct ifla_bridge_id),
+		    &p->designated_bridge))
 		return -EMSGSIZE;
 
 	return 0;
-- 
2.4.3

[PATCH net-next 3/8] bridge: netlink: export port's designated cost and port

[Nikolay Aleksandrov]

From: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>

Add IFLA_BRPORT_DESIGNATED_(COST|PORT) to allow getting the port's
designated cost and port respectively via netlink.

Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
---
 include/uapi/linux/if_link.h | 2 ++
 net/bridge/br_netlink.c      | 6 +++++-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/include/uapi/linux/if_link.h b/include/uapi/linux/if_link.h
index e891c32c9993..837caf940135 100644
--- a/include/uapi/linux/if_link.h
+++ b/include/uapi/linux/if_link.h
@@ -294,6 +294,8 @@ enum {
 	IFLA_BRPORT_PROXYARP_WIFI, /* proxy ARP for Wi-Fi */
 	IFLA_BRPORT_ROOT_ID,	/* designated root */
 	IFLA_BRPORT_BRIDGE_ID,	/* designated bridge */
+	IFLA_BRPORT_DESIGNATED_PORT,
+	IFLA_BRPORT_DESIGNATED_COST,
 	__IFLA_BRPORT_MAX
 };
 #define IFLA_BRPORT_MAX (__IFLA_BRPORT_MAX - 1)
diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c
index c3e0b73d660d..678d22747044 100644
--- a/net/bridge/br_netlink.c
+++ b/net/bridge/br_netlink.c
@@ -129,6 +129,8 @@ static inline size_t br_port_info_size(void)
 		+ nla_total_size(1)	/* IFLA_BRPORT_PROXYARP_WIFI */
 		+ 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 */
 		+ 0;
 }
 
@@ -166,7 +168,9 @@ static int br_port_fill_attrs(struct sk_buff *skb,
 	    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))
+		    &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))
 		return -EMSGSIZE;
 
 	return 0;
-- 
2.4.3

[PATCH net-next 4/8] bridge: netlink: export port's id and number

[Nikolay Aleksandrov]

From: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>

Add IFLA_BRPORT_(ID|NO) to allow getting port's port_id and port_no
respectively via netlink.

Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
---
 include/uapi/linux/if_link.h | 2 ++
 net/bridge/br_netlink.c      | 6 +++++-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/include/uapi/linux/if_link.h b/include/uapi/linux/if_link.h
index 837caf940135..6857563eb27c 100644
--- a/include/uapi/linux/if_link.h
+++ b/include/uapi/linux/if_link.h
@@ -296,6 +296,8 @@ enum {
 	IFLA_BRPORT_BRIDGE_ID,	/* designated bridge */
 	IFLA_BRPORT_DESIGNATED_PORT,
 	IFLA_BRPORT_DESIGNATED_COST,
+	IFLA_BRPORT_ID,
+	IFLA_BRPORT_NO,
 	__IFLA_BRPORT_MAX
 };
 #define IFLA_BRPORT_MAX (__IFLA_BRPORT_MAX - 1)
diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c
index 678d22747044..e51332792c3c 100644
--- a/net/bridge/br_netlink.c
+++ b/net/bridge/br_netlink.c
@@ -131,6 +131,8 @@ static inline size_t br_port_info_size(void)
 		+ 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 */
 		+ 0;
 }
 
@@ -170,7 +172,9 @@ static int br_port_fill_attrs(struct sk_buff *skb,
 	    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_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))
 		return -EMSGSIZE;
 
 	return 0;
-- 
2.4.3

[PATCH net-next 5/8] bridge: netlink: export port's topology_change_ack and config_pending

[Nikolay Aleksandrov]

From: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>

Add IFLA_BRPORT_TOPOLOGY_CHANGE_ACK and IFLA_BRPORT_CONFIG_PENDING to
allow getting port's topology_change_ack and config_pending respectively
via netlink.

Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
---
 include/uapi/linux/if_link.h | 2 ++
 net/bridge/br_netlink.c      | 7 ++++++-
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/include/uapi/linux/if_link.h b/include/uapi/linux/if_link.h
index 6857563eb27c..1d6aeb1bbe95 100644
--- a/include/uapi/linux/if_link.h
+++ b/include/uapi/linux/if_link.h
@@ -298,6 +298,8 @@ enum {
 	IFLA_BRPORT_DESIGNATED_COST,
 	IFLA_BRPORT_ID,
 	IFLA_BRPORT_NO,
+	IFLA_BRPORT_TOPOLOGY_CHANGE_ACK,
+	IFLA_BRPORT_CONFIG_PENDING,
 	__IFLA_BRPORT_MAX
 };
 #define IFLA_BRPORT_MAX (__IFLA_BRPORT_MAX - 1)
diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c
index e51332792c3c..433d632ad7d0 100644
--- a/net/bridge/br_netlink.c
+++ b/net/bridge/br_netlink.c
@@ -133,6 +133,8 @@ static inline size_t br_port_info_size(void)
 		+ 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 */
 		+ 0;
 }
 
@@ -174,7 +176,10 @@ static int br_port_fill_attrs(struct sk_buff *skb,
 	    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_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))
 		return -EMSGSIZE;
 
 	return 0;
-- 
2.4.3

[PATCH net-next 6/8] bridge: netlink: export port's timer values

[Nikolay Aleksandrov]

From: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>

Add the following attributes in order to export port's timer values:
IFLA_BRPORT_MESSAGE_AGE_TIMER, IFLA_BRPORT_FORWARD_DELAY_TIMER and
IFLA_BRPORT_HOLD_TIMER.

Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
---
 include/uapi/linux/if_link.h |  3 +++
 net/bridge/br_netlink.c      | 14 ++++++++++++++
 2 files changed, 17 insertions(+)

diff --git a/include/uapi/linux/if_link.h b/include/uapi/linux/if_link.h
index 1d6aeb1bbe95..9c17f605e013 100644
--- a/include/uapi/linux/if_link.h
+++ b/include/uapi/linux/if_link.h
@@ -300,6 +300,9 @@ enum {
 	IFLA_BRPORT_NO,
 	IFLA_BRPORT_TOPOLOGY_CHANGE_ACK,
 	IFLA_BRPORT_CONFIG_PENDING,
+	IFLA_BRPORT_MESSAGE_AGE_TIMER,
+	IFLA_BRPORT_FORWARD_DELAY_TIMER,
+	IFLA_BRPORT_HOLD_TIMER,
 	__IFLA_BRPORT_MAX
 };
 #define IFLA_BRPORT_MAX (__IFLA_BRPORT_MAX - 1)
diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c
index 433d632ad7d0..04b0e5072686 100644
--- a/net/bridge/br_netlink.c
+++ b/net/bridge/br_netlink.c
@@ -135,6 +135,9 @@ static inline size_t br_port_info_size(void)
 		+ 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(sizeof(u64))	/* IFLA_BRPORT_MESSAGE_AGE_TIMER */
+		+ nla_total_size(sizeof(u64))	/* IFLA_BRPORT_FORWARD_DELAY_TIMER */
+		+ nla_total_size(sizeof(u64))	/* IFLA_BRPORT_HOLD_TIMER */
 		+ 0;
 }
 
@@ -156,6 +159,7 @@ 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) ||
@@ -182,6 +186,16 @@ static int br_port_fill_attrs(struct sk_buff *skb,
 	    nla_put_u8(skb, IFLA_BRPORT_CONFIG_PENDING, p->config_pending))
 		return -EMSGSIZE;
 
+	timerval = br_timer_value(&p->message_age_timer);
+	if (nla_put_u64(skb, IFLA_BRPORT_MESSAGE_AGE_TIMER, timerval))
+		return -EMSGSIZE;
+	timerval = br_timer_value(&p->forward_delay_timer);
+	if (nla_put_u64(skb, IFLA_BRPORT_FORWARD_DELAY_TIMER, timerval))
+		return -EMSGSIZE;
+	timerval = br_timer_value(&p->hold_timer);
+	if (nla_put_u64(skb, IFLA_BRPORT_HOLD_TIMER, timerval))
+		return -EMSGSIZE;
+
 	return 0;
 }
 
-- 
2.4.3

[PATCH net-next 7/8] bridge: netlink: allow to flush port's fdb

[Nikolay Aleksandrov]

From: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>

Add IFLA_BRPORT_FLUSH to allow flushing port's fdb similar to sysfs's
flush.

Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
---
 include/uapi/linux/if_link.h | 1 +
 net/bridge/br_netlink.c      | 3 +++
 2 files changed, 4 insertions(+)

diff --git a/include/uapi/linux/if_link.h b/include/uapi/linux/if_link.h
index 9c17f605e013..fcea39a56095 100644
--- a/include/uapi/linux/if_link.h
+++ b/include/uapi/linux/if_link.h
@@ -303,6 +303,7 @@ enum {
 	IFLA_BRPORT_MESSAGE_AGE_TIMER,
 	IFLA_BRPORT_FORWARD_DELAY_TIMER,
 	IFLA_BRPORT_HOLD_TIMER,
+	IFLA_BRPORT_FLUSH,
 	__IFLA_BRPORT_MAX
 };
 #define IFLA_BRPORT_MAX (__IFLA_BRPORT_MAX - 1)
diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c
index 04b0e5072686..6468166d6bdc 100644
--- a/net/bridge/br_netlink.c
+++ b/net/bridge/br_netlink.c
@@ -631,6 +631,9 @@ static int br_setport(struct net_bridge_port *p, struct nlattr *tb[])
 			return err;
 	}
 
+	if (tb[IFLA_BRPORT_FLUSH])
+		br_fdb_delete_by_port(p->br, p, 0, 0);
+
 	br_port_flags_change(p, old_flags ^ p->flags);
 	return 0;
 }
-- 
2.4.3

[PATCH net-next 8/8] bridge: netlink: add support for port's multicast_router attribute

[Nikolay Aleksandrov]

From: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>

Add IFLA_BRPORT_MULTICAST_ROUTER to allow setting/getting port's
multicast_router via netlink.

Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
---
 include/uapi/linux/if_link.h |  1 +
 net/bridge/br_netlink.c      | 19 +++++++++++++++++++
 2 files changed, 20 insertions(+)

diff --git a/include/uapi/linux/if_link.h b/include/uapi/linux/if_link.h
index fcea39a56095..e3b6217f34f1 100644
--- a/include/uapi/linux/if_link.h
+++ b/include/uapi/linux/if_link.h
@@ -304,6 +304,7 @@ enum {
 	IFLA_BRPORT_FORWARD_DELAY_TIMER,
 	IFLA_BRPORT_HOLD_TIMER,
 	IFLA_BRPORT_FLUSH,
+	IFLA_BRPORT_MULTICAST_ROUTER,
 	__IFLA_BRPORT_MAX
 };
 #define IFLA_BRPORT_MAX (__IFLA_BRPORT_MAX - 1)
diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c
index 6468166d6bdc..d78b4429505a 100644
--- a/net/bridge/br_netlink.c
+++ b/net/bridge/br_netlink.c
@@ -138,6 +138,9 @@ static inline size_t br_port_info_size(void)
 		+ nla_total_size(sizeof(u64))	/* IFLA_BRPORT_MESSAGE_AGE_TIMER */
 		+ nla_total_size(sizeof(u64))	/* IFLA_BRPORT_FORWARD_DELAY_TIMER */
 		+ nla_total_size(sizeof(u64))	/* IFLA_BRPORT_HOLD_TIMER */
+#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
+		+ nla_total_size(sizeof(u8))	/* IFLA_BRPORT_MULTICAST_ROUTER */
+#endif
 		+ 0;
 }
 
@@ -196,6 +199,12 @@ static int br_port_fill_attrs(struct sk_buff *skb,
 	if (nla_put_u64(skb, IFLA_BRPORT_HOLD_TIMER, timerval))
 		return -EMSGSIZE;
 
+#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
+	if (nla_put_u8(skb, IFLA_BRPORT_MULTICAST_ROUTER,
+		       p->multicast_router))
+		return -EMSGSIZE;
+#endif
+
 	return 0;
 }
 
@@ -560,6 +569,7 @@ static const struct nla_policy br_port_policy[IFLA_BRPORT_MAX + 1] = {
 	[IFLA_BRPORT_UNICAST_FLOOD] = { .type = NLA_U8 },
 	[IFLA_BRPORT_PROXYARP]	= { .type = NLA_U8 },
 	[IFLA_BRPORT_PROXYARP_WIFI] = { .type = NLA_U8 },
+	[IFLA_BRPORT_MULTICAST_ROUTER] = { .type = NLA_U8 },
 };
 
 /* Change the state of the port and notify spanning tree */
@@ -634,6 +644,15 @@ static int br_setport(struct net_bridge_port *p, struct nlattr *tb[])
 	if (tb[IFLA_BRPORT_FLUSH])
 		br_fdb_delete_by_port(p->br, p, 0, 0);
 
+#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
+	if (tb[IFLA_BRPORT_MULTICAST_ROUTER]) {
+		u8 mcast_router = nla_get_u8(tb[IFLA_BRPORT_MULTICAST_ROUTER]);
+
+		err = br_multicast_set_port_router(p, mcast_router);
+		if (err)
+			return err;
+	}
+#endif
 	br_port_flags_change(p, old_flags ^ p->flags);
 	return 0;
 }
-- 
2.4.3

Re: [PATCH net-next 0/8] bridge: netlink: complete port attribute support

[David Miller]

From: Nikolay Aleksandrov <razor@blackwall.org>
Date: Tue,  6 Oct 2015 14:11:54 +0200

> This is the second set that completes the bridge port's netlink support and
> makes everything from sysfs available via netlink. I've used sysfs as a
> guide of what and how to set again. I've tested setting/getting every
> option and also this time tested enabling KASAN. Again there're a few long
> line warnings about the ifla attribute names in br_port_info_size() but
> as the previous set - it's good to know what's been accounted for.

Series applied, thanks Nik.