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linux/net/bridge
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Vivien Didelot 308433155a net: bridge: add helper to call /sbin/bridge-stp 
If /sbin/bridge-stp is available on the system, bridge tries to execute
it instead of the kernel implementation when starting/stopping STP.

If anything goes wrong with /sbin/bridge-stp, bridge silently falls back
to kernel STP, making hard to debug userspace STP.

This patch adds a br_stp_call_user helper to start/stop userspace STP
and debug errors from the program: abnormal exit status is stored in the
lower byte and normal exit status is stored in higher byte.

Below is a simple example on a kernel with dynamic debug enabled:

    # ln -s /bin/false /sbin/bridge-stp
    # brctl stp br0 on
    br0: failed to start userspace STP (256)
    # dmesg
    br0: /sbin/bridge-stp exited with code 1
    br0: failed to start userspace STP (256)
    br0: using kernel STP

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-13 11:21:31 -04:00
..
netfilter Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-09-12 15:52:44 -07:00
br_device.c net: bridge: change unicast boolean to exact pkt_type 2016-09-01 22:48:33 -07:00
br_fdb.c rtnetlink: fdb dump: optimize by saving last interface markers 2016-09-01 16:56:15 -07:00
br_forward.c net: bridge: add per-port multicast flood flag 2016-09-01 22:48:33 -07:00
br_if.c net: bridge: add per-port multicast flood flag 2016-09-01 22:48:33 -07:00
br_input.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-09-12 15:52:44 -07:00
br_ioctl.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-05-09 15:59:24 -04:00
br_mdb.c bridge: mdb: Marking port-group as offloaded 2016-04-24 14:23:32 -04:00
br_multicast.c bridge: re-introduce 'fix parsing of MLDv2 reports' 2016-08-31 09:29:58 -07:00
br_netfilter_hooks.c ipv4: Fix ip_skb_dst_mtu to use the sk passed by ip_finish_output 2016-06-30 09:02:48 -04:00
br_netfilter_ipv6.c ipv6: rename IP6_INC_STATS_BH() 2016-04-27 22:48:24 -04:00
br_netlink.c net: bridge: add per-port multicast flood flag 2016-09-01 22:48:33 -07:00
br_nf_core.c net: Remove protocol from struct dst_ops 2015-03-09 16:06:10 -04:00
br_private_stp.h net: 8021q/bluetooth/bridge/can/ceph: Remove extern from function prototypes 2013-10-19 19:12:11 -04:00
br_private.h net: bridge: change unicast boolean to exact pkt_type 2016-09-01 22:48:33 -07:00
br_stp_bpdu.c netfilter: Pass net into okfn 2015-09-17 17:18:37 -07:00
br_stp_if.c net: bridge: add helper to call /sbin/bridge-stp 2016-09-13 11:21:31 -04:00
br_stp_timer.c net: bridge: log port STP state on change 2016-02-18 14:20:08 -05:00
br_stp.c net: bridge: br_set_ageing_time takes a clock_t 2016-07-25 10:30:03 -07:00
br_switchdev.c bridge: switchdev: Add forward mark support for stacked devices 2016-08-26 13:13:36 -07:00
br_sysfs_br.c net: bridge: add support for IGMP/MLD stats and export them via netlink 2016-06-30 06:18:24 -04:00
br_sysfs_if.c net: bridge: add per-port multicast flood flag 2016-09-01 22:48:33 -07:00
br_vlan.c bridge: netlink: export per-vlan stats 2016-05-02 22:27:06 -04:00
br.c switchdev: Require RTNL mutex to be held when sending FDB notifications 2016-01-28 16:21:31 -08:00
Kconfig
Makefile bridge: switchdev: Add forward mark support for stacked devices 2016-08-26 13:13:36 -07:00