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  1. 28 Jun, 2016 2 commits
    • Jay Vosburgh's avatar
      bonding: fix 802.3ad aggregator reselection · 0622cab0
      Jay Vosburgh authored 
      Since commit 7bb11dc9 ("bonding: unify all places where
actor-oper key needs to be updated."), the logic in bonding to handle
selection between multiple aggregators has not functioned.

	This affects only configurations wherein the bonding slaves
connect to two discrete aggregators (e.g., two independent switches, each
with LACP enabled), thus creating two separate aggregation groups within a
single bond.

	The cause is a change in 7bb11dc9 to no longer set
AD_PORT_BEGIN on a port after a link state change, which would cause the
port to be reselected for attachment to an aggregator as if were newly
added to the bond.  We cannot restore the prior behavior, as it
contradicts IEEE 802.1AX 5.4.12, which requires ports that "become
inoperable" (lose carrier, setting port_enabled=false as per 802.1AX
5.4.7) to remain selected (i.e., assigned to the aggregator).  As the port
now remains selected, the aggregator selection logic is not invoked.

	A side effect of this change is that aggregators in bonding will
now contain ports that are link down.  The aggregator selection logic
does not currently handle this situation correctly, causing incorrect
aggregator selection.

	This patch makes two changes to repair the aggregator selection
logic in bonding to function as documented and within the confines of the
standard:

	First, the aggregator selection and related logic now utilizes the
number of active ports per aggregator, not the number of selected ports
(as some selected ports may be down).  The ad_select "bandwidth" and
"count" options only consider ports that are link up.

	Second, on any carrier state change of any slave, the aggregator
selection logic is explicitly called to insure the correct aggregator is
active.
Reported-by: default avatarVeli-Matti Lintu <veli-matti.lintu@opinsys.fi>
Fixes: 7bb11dc9 ("bonding: unify all places where actor-oper key needs to be updated.")
Signed-off-by: default avatarJay Vosburgh <jay.vosburgh@canonical.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      0622cab0
    • Tom Goff's avatar
      ipmr/ip6mr: Initialize the last assert time of mfc entries. · 70a0dec4
      Tom Goff authored 
      This fixes wrong-interface signaling on 32-bit platforms for entries
created when jiffies > 2^31 + MFC_ASSERT_THRESH.
Signed-off-by: default avatarTom Goff <thomas.goff@ll.mit.edu>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      70a0dec4
  3. 27 Jun, 2016 4 commits
  5. 23 Jun, 2016 11 commits
  7. 22 Jun, 2016 7 commits
    • David S. Miller's avatar
      Merge branch 'mlx4-fixes' · acd43fe8
      David S. Miller authored 
      Tariq Toukan says:

====================
mlx4_en fixes for 4.7-rc

This small patchset includes two small fixes for mlx4_en driver.

One allows a clean shutdown even when clients do not release their
netdev reference.
The other adds error return values to the VLAN VID add/kill functions.
====================
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      acd43fe8
    • Eran Ben Elisha's avatar
      net/mlx4_en: Avoid unregister_netdev at shutdown flow · 9d769311
      Eran Ben Elisha authored 
      This allows a clean shutdown, even if some netdev clients do not
release their reference from this netdev. It is enough to release
the HW resources only as the kernel is shutting down.

Fixes: 2ba5fbd6 ('net/mlx4_core: Handle AER flow properly')
Signed-off-by: default avatarEran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: default avatarTariq Toukan <tariqt@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      9d769311
    • Kamal Heib's avatar
      net/mlx4_en: Fix the return value of a failure in VLAN VID add/kill · 93c098af
      Kamal Heib authored 
      Modify mlx4_en_vlan_rx_[add/kill]_vid to return error value in case of
failure.

Fixes: 8e586137 ('net: make vlan ndo_vlan_rx_[add/kill]_vid return error value')
Signed-off-by: default avatarKamal Heib <kamalh@mellanox.com>
Signed-off-by: default avatarTariq Toukan <tariqt@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      93c098af
    • Jon Paul Maloy's avatar
      tipc: unclone unbundled buffers before forwarding · 27777daa
      Jon Paul Maloy authored 
      When extracting an individual message from a received "bundle" buffer,
we just create a clone of the base buffer, and adjust it to point into
the right position of the linearized data area of the latter. This works
well for regular message reception, but during periods of extremely high
load it may happen that an extracted buffer, e.g, a connection probe, is
reversed and forwarded through an external interface while the preceding
extracted message is still unhandled. When this happens, the header or
data area of the preceding message will be partially overwritten by a
MAC header, leading to unpredicatable consequences, such as a link
reset.

We now fix this by ensuring that the msg_reverse() function never
returns a cloned buffer, and that the returned buffer always contains
sufficient valid head and tail room to be forwarded.
Reported-by: default avatarErik Hugne <erik.hugne@gmail.com>
Acked-by: default avatarYing Xue <ying.xue@windriver.com>
Signed-off-by: default avatarJon Maloy <jon.maloy@ericsson.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      27777daa
    • Jiri Slaby's avatar
      kcm: fix /proc memory leak · d19af0a7
      Jiri Slaby authored 
      Every open of /proc/net/kcm leaks 16 bytes of memory as is reported by
kmemleak:
unreferenced object 0xffff88059c0e3458 (size 192):
  comm "cat", pid 1401, jiffies 4294935742 (age 310.720s)
  hex dump (first 32 bytes):
    28 45 71 96 05 88 ff ff 00 10 00 00 00 00 00 00  (Eq.............
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<ffffffff8156a2de>] kmem_cache_alloc_trace+0x16e/0x230
    [<ffffffff8162a479>] seq_open+0x79/0x1d0
    [<ffffffffa0578510>] kcm_seq_open+0x0/0x30 [kcm]
    [<ffffffff8162a479>] seq_open+0x79/0x1d0
    [<ffffffff8162a8cf>] __seq_open_private+0x2f/0xa0
    [<ffffffff81712548>] seq_open_net+0x38/0xa0
...

It is caused by a missing free in the ->release path. So fix it by
providing seq_release_net as the ->release method.
Signed-off-by: default avatarJiri Slaby <jslaby@suse.cz>
Fixes: cd6e111b (kcm: Add statistics and proc interfaces)
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Tom Herbert <tom@herbertland.com>
Cc: netdev@vger.kernel.org
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      d19af0a7
    • Ido Schimmel's avatar
      team: Fix possible deadlock during team enslave · 942f64c4
      Ido Schimmel authored 
      Both dev_uc_sync_multiple() and dev_mc_sync_multiple() require the
source device to be locked by netif_addr_lock_bh(), but this is missing
in team's enslave function, so add it.

This fixes the following lockdep warning:

Possible interrupt unsafe locking scenario:

        CPU0                    CPU1
        ----                    ----
   lock(_xmit_ETHER/1);
                                local_irq_disable();
                                lock(&(&mc->mca_lock)->rlock);
                                lock(&team_netdev_addr_lock_key);
   <Interrupt>
     lock(&(&mc->mca_lock)->rlock);

  *** DEADLOCK ***

Fixes: cb41c997 ("team: team should sync the port's uc/mc addrs when add a port")
Signed-off-by: default avatarJiri Pirko <jiri@mellanox.com>
Signed-off-by: default avatarIdo Schimmel <idosch@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      942f64c4
    • David S. Miller's avatar
      Merge tag 'linux-can-fixes-for-4.7-20160620' of... · 6b65ca06
      David S. Miller authored 
      Merge tag 'linux-can-fixes-for-4.7-20160620' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can

Marc Kleine-Budde says:

====================
pull-request: can 2016-06-20

this is a pull request of 3 patches for the upcoming linux-4.7 release.

The first patch is by Thor Thayer for the c_can/d_can driver. It fixes the
registar access on Altera Cyclone devices, which caused CAN frames to have 0x0
in the first two bytes incorrectly. Wolfgang Grandegger's patch for the at91
driver fixes a hanging driver under high bus load situations. A patch for the
gs_usb driver by Maximilian Schneider adds support for the bytewerk.org
candleLight interface.
====================
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      6b65ca06
  9. 20 Jun, 2016 3 commits
  11. 19 Jun, 2016 8 commits
  13. 18 Jun, 2016 5 commits
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