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git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless
John W. Linville says:
====================
pull request: wireless 2014-11-20
Please full this little batch of fixes intended for the 3.18 stream!
For the mac80211 patch, Johannes says:
"Here's another last minute fix, for minstrel HT crashing
depending on the value of some uninitialised stack."
On top of that...
Ben Greear fixes an ath9k regression in which a BSSID mask is
miscalculated.
Dmitry Torokhov corrects an error handling routing in brcmfmac which
was checking an unsigned variable for a negative value.
Johannes Berg avoids a build problem in brcmfmac for arches where
linux/unaligned/access_ok.h and asm/unaligned.h conflict.
Mathy Vanhoef addresses another brcmfmac issue so as to eliminate a
use-after-free of the URB transfer buffer if a timeout occurs.
Please let me know if there are problems!
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Peer priority groups were being reversed, but this was missed in the previous
fix sent out for this issue.
v2 : Previous patch was doing extra unnecessary work, result is the same.
Please ignore previous patch
Fixes : ee7bc3cdc270 ('cxgb4 : dcb open-lldp interop fixes')
Signed-off-by: Anish Bhatt <anish@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This fixes an old regression introduced by commit
b0d0d915 (ipx: remove the BKL).
When a recvmsg syscall blocks waiting for new data, no data can be sent on the
same socket with sendmsg because ipx_recvmsg() sleeps with the socket locked.
This breaks mars-nwe (NetWare emulator):
- the ncpserv process reads the request using recvmsg
- ncpserv forks and spawns nwconn
- ncpserv calls a (blocking) recvmsg and waits for new requests
- nwconn deadlocks in sendmsg on the same socket
Commit b0d0d915 has simply replaced BKL locking with
lock_sock/release_sock. Unlike now, BKL got unlocked while
sleeping, so a blocking recvmsg did not block a concurrent
sendmsg.
Only keep the socket locked while actually working with the socket data and
release it prior to calling skb_recv_datagram().
Signed-off-by: Jiri Bohac <jbohac@suse.cz>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When userspace doesn't provide a mask, OVS datapath generates a fully
unwildcarded mask for the flow by copying the flow and setting all bits
in all fields. For IPv6 label, this creates a mask that matches on the
upper 12 bits, causing the following error:
openvswitch: netlink: Invalid IPv6 flow label value (value=ffffffff, max=fffff)
This patch ignores the label validation check for masks, avoiding this
error.
Signed-off-by: Joe Stringer <joestringer@nicira.com>
Acked-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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pptp_getname() only partially initializes the stack variable sa,
particularly only fills the pptp part of the sa_addr union. The code
thereby discloses 16 bytes of kernel stack memory via getsockname().
Fix this by memset(0)'ing the union before.
Cc: Dmitry Kozlov <xeb@mail.ru>
Signed-off-by: Mathias Krause <minipli@googlemail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This is a specific implementation, <asm/unaligned.h> is the
multiplexer that has the arch-specific knowledge of which
of the implementations needs to be used, so include that.
This issue was revealed by kbuild testing
when <asm/unaligned.h> was added in <linux/ieee80211.h>
resulting in redefinition of get_unaligned_be16 (and
probably others).
Cc: stable@vger.kernel.org # v3.17
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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cxgb4i was returning wrong error and not releasing module reference if remote
end abruptly closed TCP connection. This prevents the cxgb4 network module from
being unloaded, further affecting other network drivers dependent on cxgb4
Sending to net as this affects all cxgb4 based network drivers.
Signed-off-by: Anish Bhatt <anish@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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pim6_protocol was added when initiation, but it not deleted.
Similarly, unregister RTNL_FAMILY_IP6MR rtnetlink.
Signed-off-by: Duan Jiong <duanj.fnst@cn.fujitsu.com>
Reviewed-by: Cong Wang <cwang@twopensource.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211
Johannes Berg <johannes@sipsolutions.net> says:
"Here's another last minute fix, for minstrel HT crashing
depending on the value of some uninitialised stack."
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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git://gitorious.org/linux-can/linux-can
Marc Kleine-Budde says:
====================
pull-request: can 2014-11-18
this is a pull request of 17 patches for net/master for the v3.18 release
cycle.
The last patch of this pull request ("can: m_can: update to support CAN FD
features") adds, as the description says, a new feature to the m_can driver. As
the m_can driver has been added in v3.18 there is no risk of causing a
regression. Give me a note if this is not okay and I'll create a new pull
request without it.
There is a patch for the CAN infrastructure by Thomas Körper which fixes
calling kfree_skb() from interrupt context. Roman Fietze fixes a typo also in
the infrastructure. A patch by Dong Aisheng adds a generic helper function to
tell if a skb is normal CAN or CAN-FD frame. Alexey Khoroshilov of the Linux
Driver Verification project fixes a memory leak in the esd_usb2 driver. Two
patches by Sudip Mukherjee remove unused variables and fixe the signess of a
variable. Three patches by me add the missing .ndo_change_mtu callback to the
xilinx_can, rcar_can and gs_usb driver.
The remaining patches improve the m_can driver: David Cohen adds the missing
CONFIG_HAS_IOMEM dependency. Dong Aisheng provides 6 bugfix patches (most
important: missing RAM init, sleep in NAPI poll, dlc in RTR). While the last of
his patches adds CAN FD support to the driver.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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This is currently missing, which results in a crash when one attempts
to set VXLAN tunnel over the mlx4_en when acting as PF.
[ 2408.785472] BUG: unable to handle kernel NULL pointer dereference at (null)
[...]
[ 2408.994104] Call Trace:
[ 2408.996584] [<ffffffffa021f7f5>] ? vxlan_get_rx_port+0xd6/0x103 [vxlan]
[ 2409.003316] [<ffffffffa021f71f>] ? vxlan_lowerdev_event+0xf2/0xf2 [vxlan]
[ 2409.010225] [<ffffffffa0630358>] mlx4_en_start_port+0x862/0x96a [mlx4_en]
[ 2409.017132] [<ffffffffa063070f>] mlx4_en_open+0x17f/0x1b8 [mlx4_en]
While here, make sure to invoke vxlan_get_rx_port() only when VXLAN
offloads are actually enabled and not when they are only supported.
Reported-by: Ido Shamay <idos@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Since commit 6fde8f037e60 ("bonding: fix locking in
bond_loadbalance_arp_mon()") we can have a stale bond carrier state and
stale curr_active_slave when using arp monitoring in loadbalance modes. The
reason is that in bond_loadbalance_arp_mon() we can't have
do_failover == true but slave_state_changed == false, whenever do_failover
is true then slave_state_changed is also true. Then the following piece
from bond_loadbalance_arp_mon():
if (slave_state_changed) {
bond_slave_state_change(bond);
if (BOND_MODE(bond) == BOND_MODE_XOR)
bond_update_slave_arr(bond, NULL);
} else if (do_failover) {
block_netpoll_tx();
bond_select_active_slave(bond);
unblock_netpoll_tx();
}
will execute only the first branch, always and regardless of do_failover.
Since these two events aren't related in such way, we need to decouple and
consider them separately.
For example this issue could lead to the following result:
Bonding Mode: load balancing (round-robin)
*MII Status: down*
MII Polling Interval (ms): 0
Up Delay (ms): 0
Down Delay (ms): 0
ARP Polling Interval (ms): 100
ARP IP target/s (n.n.n.n form): 192.168.9.2
Slave Interface: ens12
*MII Status: up*
Speed: 10000 Mbps
Duplex: full
Link Failure Count: 2
Permanent HW addr: 00:0f:53:01:42:2c
Slave queue ID: 0
Slave Interface: eth1
*MII Status: up*
Speed: Unknown
Duplex: Unknown
Link Failure Count: 70
Permanent HW addr: 52:54:00:2f:0f:8e
Slave queue ID: 0
Since some interfaces are up, then the status of the bond should also be
up, but it will never change unless something invokes bond_set_carrier()
(i.e. enslave, bond_select_active_slave etc). Now, if I force the
calling of bond_select_active_slave via for example changing
primary_reselect (it can change in any mode), then the MII status goes to
"up" because it calls bond_select_active_slave() which should've been done
from bond_loadbalance_arp_mon() itself.
CC: Veaceslav Falico <vfalico@gmail.com>
CC: Jay Vosburgh <j.vosburgh@gmail.com>
CC: Andy Gospodarek <andy@greyhouse.net>
CC: Ding Tianhong <dingtianhong@huawei.com>
Fixes: 6fde8f037e60 ("bonding: fix locking in bond_loadbalance_arp_mon()")
Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com>
Acked-by: Veaceslav Falico <vfalico@gmail.com>
Acked-by: Andy Gospodarek <gospo@cumulusnetworks.com>
Acked-by: Ding Tianhong <dingtianhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The commit 5935839ad73583781b8bbe8d91412f6826e218a4
"mac80211: improve minstrel_ht rate sorting by throughput & probability"
introduced a crash on rate sorting that occurs when the rate added to
the sorting array is faster than all the previous rates. Due to an
off-by-one error, it reads the rate index from tp_list[-1], which
contains uninitialized stack garbage, and then uses the resulting index
for accessing the group rate stats, leading to a crash if the garbage
value is big enough.
Cc: Thomas Huehn <thomas@net.t-labs.tu-berlin.de>
Reported-by: Jouni Malinen <j@w1.fi>
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Suggested-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Joe Stringer <joestringer@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Bosch M_CAN is CAN FD capable device. This patch implements the CAN
FD features include up to 64 bytes payload and bitrate switch function.
1) Change the Rx FIFO and Tx Buffer to 64 bytes for support CAN FD
up to 64 bytes payload. It's backward compatible with old 8 bytes
normal CAN frame.
2) Allocate can frame or canfd frame based on EDL bit
3) Bitrate Switch function is disabled by default and will be enabled
according to CANFD_BRS bit in cf->flags.
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Dong Aisheng <b29396@freescale.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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Fix a few error messages.
Signed-off-by: Dong Aisheng <b29396@freescale.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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The spec mentions there may be a delay until the value written to INIT can be
read back due to the synchronization mechanism between the two clock domains.
But it does not indicate the exact clock cycles needed. The 5us delay is a
test value and seems ok.
Without the delay, CCCR.CCE bit may fail to be set and then the initialization
fail sometimes when do repeatly up and down.
Signed-off-by: Dong Aisheng <b29396@freescale.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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The original code missed to set the cf->can_dlc in the RTR case, so add it.
Signed-off-by: Dong Aisheng <b29396@freescale.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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The m_can_get_berr_counter function can sleep and it may be called in napi poll
function. Rework it to fix the following warning.
root@imx6qdlsolo:~# cangen can0 -f -L 12 -D 112233445566778899001122
[ 1846.017565] m_can 20e8000.can can0: entered error warning state
[ 1846.023551] ------------[ cut here ]------------
[ 1846.028216] WARNING: CPU: 0 PID: 560 at kernel/locking/mutex.c:867 mutex_trylock+0x218/0x23c()
[ 1846.036889] DEBUG_LOCKS_WARN_ON(in_interrupt())
[ 1846.041263] Modules linked in:
[ 1846.044594] CPU: 0 PID: 560 Comm: cangen Not tainted 3.17.0-rc4-next-20140915-00010-g032d018-dirty #477
[ 1846.054033] Backtrace:
[ 1846.056557] [<80012448>] (dump_backtrace) from [<80012728>] (show_stack+0x18/0x1c)
[ 1846.064180] r6:809a07ec r5:809a07ec r4:00000000 r3:00000000
[ 1846.069966] [<80012710>] (show_stack) from [<806c9ee0>] (dump_stack+0x8c/0xa4)
[ 1846.077264] [<806c9e54>] (dump_stack) from [<8002aa78>] (warn_slowpath_common+0x70/0x94)
[ 1846.085403] r6:806cd1b0 r5:00000009 r4:be1d5c20 r3:be07b0c0
[ 1846.091204] [<8002aa08>] (warn_slowpath_common) from [<8002aad4>] (warn_slowpath_fmt+0x38/0x40)
[ 1846.099951] r8:8119106c r7:80515aa4 r6:be027000 r5:00000001 r4:809d1df4
[ 1846.106830] [<8002aaa0>] (warn_slowpath_fmt) from [<806cd1b0>] (mutex_trylock+0x218/0x23c)
[ 1846.115141] r3:80851c88 r2:8084fb74
[ 1846.118804] [<806ccf98>] (mutex_trylock) from [<80515aa4>] (clk_prepare_lock+0x14/0xf4)
[ 1846.126859] r8:00000040 r7:be1d5cec r6:be027000 r5:be255800 r4:be027000
[ 1846.133737] [<80515a90>] (clk_prepare_lock) from [<80517660>] (clk_prepare+0x14/0x2c)
[ 1846.141583] r5:be255800 r4:be027000
[ 1846.145272] [<8051764c>] (clk_prepare) from [<8041ff14>] (m_can_get_berr_counter+0x20/0xd4)
[ 1846.153672] r4:be255800 r3:be07b0c0
[ 1846.157325] [<8041fef4>] (m_can_get_berr_counter) from [<80420428>] (m_can_poll+0x310/0x8fc)
[ 1846.165809] r7:bd4dc540 r6:00000744 r5:11300000 r4:be255800
[ 1846.171590] [<80420118>] (m_can_poll) from [<8056a468>] (net_rx_action+0xcc/0x1b4)
[ 1846.179204] r10:00000101 r9:be255ebc r8:00000040 r7:be7c3208 r6:8097c100 r5:be7c3200
[ 1846.187192] r4:0000012c
[ 1846.189779] [<8056a39c>] (net_rx_action) from [<8002deec>] (__do_softirq+0xfc/0x2c4)
[ 1846.197568] r10:00000101 r9:8097c088 r8:00000003 r7:8097c080 r6:40000001 r5:8097c08c
[ 1846.205559] r4:00000020
[ 1846.208144] [<8002ddf0>] (__do_softirq) from [<8002e194>] (do_softirq+0x7c/0x88)
[ 1846.215588] r10:00000000 r9:bd516a60 r8:be18ce00 r7:00000000 r6:be255800 r5:8056c0ec
[ 1846.223578] r4:60000093
[ 1846.226163] [<8002e118>] (do_softirq) from [<8002e288>] (__local_bh_enable_ip+0xe8/0x10c)
[ 1846.234386] r4:00000200 r3:be1d4000
[ 1846.238036] [<8002e1a0>] (__local_bh_enable_ip) from [<8056c108>] (__dev_queue_xmit+0x314/0x6b0)
[ 1846.246868] r6:be255800 r5:bd516a00 r4:00000000 r3:be07b0c0
[ 1846.252645] [<8056bdf4>] (__dev_queue_xmit) from [<8056c4b8>] (dev_queue_xmit+0x14/0x18)
Signed-off-by: Dong Aisheng <b29396@freescale.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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The M_CAN message RAM is usually equipped with a parity or ECC functionality.
But RAM cells suffer a hardware reset and can therefore hold arbitrary content
at startup - including parity and/or ECC bits.
To prevent the M_CAN controller detecting checksum errors when reading
potentially uninitialized TX message RAM content to transmit CAN frames the TX
message RAM has to be written with (any kind of) initial data.
Signed-off-by: Dong Aisheng <b29396@freescale.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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m_can uses io memory which makes it not compilable on architectures
without HAS_IOMEM such as UML:
drivers/built-in.o: In function `m_can_plat_probe':
m_can.c:(.text+0x218cc5): undefined reference to `devm_ioremap_resource'
m_can.c:(.text+0x218df9): undefined reference to `devm_ioremap'
Signed-off-by: David Cohen <david.a.cohen@linux.intel.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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Use common can_change_mtu function.
Signed-off-by: Dong Aisheng <b29396@freescale.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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Use common can_change_mtu function.
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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Use common can_change_mtu function.
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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Use common can_change_mtu function.
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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The variable err was of the type u32. It was being compared with < 0, and being
an unsigned variable the comparison would have been always false.
Moreover, err was getting the return value from set_reset_mode() and
xcan_set_bittiming(), and both are returning int.
Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Reviewed-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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these variable were only assigned some values, but then never
reused again.
so they are safe to be removed.
Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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It seems struct esd_usb2 dev is not deallocated on disconnect. The patch adds
the missing deallocation.
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Acked-by: Matthias Fuchs <matthias.fuchs@esd.eu>
Cc: linux-stable <stable@vger.kernel.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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The CAN device drivers can use can_is_canfd_skb() to check if the frame to send
is on CAN FD mode or normal CAN mode.
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Dong Aisheng <b29396@freescale.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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This patch fixes a typo in CAN's dev.c:
CIA -> CiA
which stands for CAN in Automation.
Signed-off-by: Roman Fietze <roman.fietze@telemotive.de>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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ikfree_skb() is Called in can_free_echo_skb(), which might be called from (TX
Error) interrupt, which triggers the folloing warning:
[ 1153.360705] ------------[ cut here ]------------
[ 1153.360715] WARNING: CPU: 0 PID: 31 at net/core/skbuff.c:563 skb_release_head_state+0xb9/0xd0()
[ 1153.360772] Call Trace:
[ 1153.360778] [<c167906f>] dump_stack+0x41/0x52
[ 1153.360782] [<c105bb7e>] warn_slowpath_common+0x7e/0xa0
[ 1153.360784] [<c158b909>] ? skb_release_head_state+0xb9/0xd0
[ 1153.360786] [<c158b909>] ? skb_release_head_state+0xb9/0xd0
[ 1153.360788] [<c105bc42>] warn_slowpath_null+0x22/0x30
[ 1153.360791] [<c158b909>] skb_release_head_state+0xb9/0xd0
[ 1153.360793] [<c158be90>] skb_release_all+0x10/0x30
[ 1153.360795] [<c158bf06>] kfree_skb+0x36/0x80
[ 1153.360799] [<f8486938>] ? can_free_echo_skb+0x28/0x40 [can_dev]
[ 1153.360802] [<f8486938>] can_free_echo_skb+0x28/0x40 [can_dev]
[ 1153.360805] [<f849a12c>] esd_pci402_interrupt+0x34c/0x57a [esd402]
[ 1153.360809] [<c10a75b5>] handle_irq_event_percpu+0x35/0x180
[ 1153.360811] [<c10a7623>] ? handle_irq_event_percpu+0xa3/0x180
[ 1153.360813] [<c10a7731>] handle_irq_event+0x31/0x50
[ 1153.360816] [<c10a9c7f>] handle_fasteoi_irq+0x6f/0x120
[ 1153.360818] [<c10a9c10>] ? handle_edge_irq+0x110/0x110
[ 1153.360822] [<c1011b61>] handle_irq+0x71/0x90
[ 1153.360823] <IRQ> [<c168152c>] do_IRQ+0x3c/0xd0
[ 1153.360829] [<c1680b6c>] common_interrupt+0x2c/0x34
[ 1153.360834] [<c107d277>] ? finish_task_switch+0x47/0xf0
[ 1153.360836] [<c167c27b>] __schedule+0x35b/0x7e0
[ 1153.360839] [<c10a5334>] ? console_unlock+0x2c4/0x4d0
[ 1153.360842] [<c13df500>] ? n_tty_receive_buf_common+0x890/0x890
[ 1153.360845] [<c10707b6>] ? process_one_work+0x196/0x370
[ 1153.360847] [<c167c723>] schedule+0x23/0x60
[ 1153.360849] [<c1070de1>] worker_thread+0x161/0x460
[ 1153.360852] [<c1090fcf>] ? __wake_up_locked+0x1f/0x30
[ 1153.360854] [<c1070c80>] ? rescuer_thread+0x2f0/0x2f0
[ 1153.360856] [<c1074f01>] kthread+0xa1/0xc0
[ 1153.360859] [<c1680401>] ret_from_kernel_thread+0x21/0x30
[ 1153.360861] [<c1074e60>] ? kthread_create_on_node+0x110/0x110
[ 1153.360863] ---[ end trace 5ff83639cbb74b35 ]---
This patch replaces the kfree_skb() by dev_kfree_skb_any().
Signed-off-by: Thomas Körper <thomas.koerper@esd.eu>
Cc: linux-stable <stable@vger.kernel.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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Return value of irq_of_parse_and_map() is unsigned int, with 0
indicating failure, so testing for negative result never works.
Signed-off-by: Dmitry Torokhov <dtor@chromium.org>
Cc: stable@vger.kernel.org # v3.17
Acked-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Kill the submitted URB in brcmf_usb_dl_cmd if the request timed out. This
assures the URB is never submitted twice. It also prevents a possible
use-after-free of the URB transfer buffer if a timeout occurs.
Signed-off-by: Mathy Vanhoef <vanhoefm@gmail.com>
Acked-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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The commit that went into 3.17:
ath9k: Summarize hw state per channel context
Group and set hw state (opmode, primary_sta, beacon conf) per
channel context instead of whole list of vifs. This would allow
each channel context to run in different mode (STA/AP).
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
broke multi-vif configuration due to not properly calculating
the bssid mask.
The test case that caught this was:
create wlan0 and sta0-4 (6 total), not sure how much that matters.
associate all 6 (works fine)
disconnect 5 of them, leaving sta0 up
Start trying to bring up the other 5 one at a time. It will
fail, with iw events looking like this (in these logs, several
sta are trying to come up, but symptom is the same with just one)
The patch causing the regression made quite a few changes, but
the part I think caused this particular problem was not
recalculating the bssid mask when adding and removing interfaces.
Re-adding those calls fixes my test case. Fix bad comment
as well.
Signed-off-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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It has been reported that generating an MLD listener report on
devices with large MTUs (e.g. 9000) and a high number of IPv6
addresses can trigger a skb_over_panic():
skbuff: skb_over_panic: text:ffffffff80612a5d len:3776 put:20
head:ffff88046d751000 data:ffff88046d751010 tail:0xed0 end:0xec0
dev:port1
------------[ cut here ]------------
kernel BUG at net/core/skbuff.c:100!
invalid opcode: 0000 [#1] SMP
Modules linked in: ixgbe(O)
CPU: 3 PID: 0 Comm: swapper/3 Tainted: G O 3.14.23+ #4
[...]
Call Trace:
<IRQ>
[<ffffffff80578226>] ? skb_put+0x3a/0x3b
[<ffffffff80612a5d>] ? add_grhead+0x45/0x8e
[<ffffffff80612e3a>] ? add_grec+0x394/0x3d4
[<ffffffff80613222>] ? mld_ifc_timer_expire+0x195/0x20d
[<ffffffff8061308d>] ? mld_dad_timer_expire+0x45/0x45
[<ffffffff80255b5d>] ? call_timer_fn.isra.29+0x12/0x68
[<ffffffff80255d16>] ? run_timer_softirq+0x163/0x182
[<ffffffff80250e6f>] ? __do_softirq+0xe0/0x21d
[<ffffffff8025112b>] ? irq_exit+0x4e/0xd3
[<ffffffff802214bb>] ? smp_apic_timer_interrupt+0x3b/0x46
[<ffffffff8063f10a>] ? apic_timer_interrupt+0x6a/0x70
mld_newpack() skb allocations are usually requested with dev->mtu
in size, since commit 72e09ad107e7 ("ipv6: avoid high order allocations")
we have changed the limit in order to be less likely to fail.
However, in MLD/IGMP code, we have some rather ugly AVAILABLE(skb)
macros, which determine if we may end up doing an skb_put() for
adding another record. To avoid possible fragmentation, we check
the skb's tailroom as skb->dev->mtu - skb->len, which is a wrong
assumption as the actual max allocation size can be much smaller.
The IGMP case doesn't have this issue as commit 57e1ab6eaddc
("igmp: refine skb allocations") stores the allocation size in
the cb[].
Set a reserved_tailroom to make it fit into the MTU and use
skb_availroom() helper instead. This also allows to get rid of
igmp_skb_size().
Reported-by: Wei Liu <lw1a2.jing@gmail.com>
Fixes: 72e09ad107e7 ("ipv6: avoid high order allocations")
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Hannes Frederic Sowa <hannes@stressinduktion.org>
Cc: David L Stevens <david.stevens@oracle.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Added the USB VID/PID for the HP lt4112 LTE/HSPA+ Gobi 4G Modem (Huawei me906e)
Signed-off-by: Martin Hauke <mardnh@gmx.de>
Acked-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/pshelar/openvswitch
Pravin B Shelar says:
====================
Open vSwitch
Following fixes are accumulated in ovs-repo.
Three of them are related to protocol processing, one is
related to memory leak in case of error and one is to
fix race.
Patch "Validate IPv6 flow key and mask values" has conflicts
with net-next, Let me know if you want me to send the patch
for net-next.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Solves possible lockup issues that can be seen from firmware DCB agents calling
into the DCB app api.
DCB firmware event queues can be tied in with NAPI so that dcb events are
generated in softIRQ context. This can results in calls to dcb_*app()
functions which try to take the dcb_lock.
If the the event triggers while we also have the dcb_lock because lldpad or
some other agent happened to be issuing a get/set command we could see a cpu
lockup.
This code was not originally written with firmware agents in mind, hence
grabbing dcb_lock from softIRQ context was not considered.
Signed-off-by: Anish Bhatt <anish@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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In case of any failure ieee802154fake_probe() just calls unregister_netdev().
But it does not look safe to unregister netdevice before it was registered.
The patch implements straightforward resource deallocation in case of
failure in ieee802154fake_probe().
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Pablo Neira Ayuso says:
====================
Netfilter/IPVS fixes for net
The following patchset contains Netfilter updates for your net tree,
they are:
1) Fix missing initialization of the range structure (allocated in the
stack) in nft_masq_{ipv4, ipv6}_eval, from Daniel Borkmann.
2) Make sure the data we receive from userspace contains the req_version
structure, otherwise return an error incomplete on truncated input.
From Dan Carpenter.
3) Fix handling og skb->sk which may cause incorrect handling
of connections from a local process. Via Simon Horman, patch from
Calvin Owens.
4) Fix wrong netns in nft_compat when setting target and match params
structure.
5) Relax chain type validation in nft_compat that was recently included,
this broke the matches that need to be run from the route chain type.
Now iptables-test.py automated regression tests report success again
and we avoid the only possible problematic case, which is the use of
nat targets out of nat chain type.
6) Use match->table to validate the tablename, instead of the match->name.
Again patch for nft_compat.
7) Restore the synchronous release of objects from the commit and abort
path in nf_tables. This is causing two major problems: splats when using
nft_compat, given that matches and targets may sleep and call_rcu is
invoked from softirq context. Moreover Patrick reported possible event
notification reordering when rules refer to anonymous sets.
8) Fix race condition in between packets that are being confirmed by
conntrack and the ctnetlink flush operation. This happens since the
removal of the central spinlock. Thanks to Jesper D. Brouer to looking
into this.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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The TX_IN_SEL offset for the CPSW_PORT/TX_IN_CTL register was
incorrect. This caused the Dual MAC mode to never get set when
it should. It also caused possible unintentional setting of a
bit in the CPSW_PORT/TX_BLKS_REM register.
The purpose of setting the Dual MAC mode for this register is to:
"... allow packets from both ethernet ports to be written into
the FIFO without one port starving the other port."
- AM335x ARM TRM
Signed-off-by: John Ogness <john.ogness@linutronix.de>
Reviewed-by: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Otherwise the exported symbols might be discarded because of no users
in vmlinux.
Reported-by: Jim Davis <jim.epost@gmail.com>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Trying to add an unreachable route incorrectly returns -ESRCH if
if custom FIB rules are present:
[root@localhost ~]# ip route add 74.125.31.199 dev eth0 via 1.2.3.4
RTNETLINK answers: Network is unreachable
[root@localhost ~]# ip rule add to 55.66.77.88 table 200
[root@localhost ~]# ip route add 74.125.31.199 dev eth0 via 1.2.3.4
RTNETLINK answers: No such process
[root@localhost ~]#
Commit 83886b6b636173b206f475929e58fac75c6f2446 ("[NET]: Change "not found"
return value for rule lookup") changed fib_rules_lookup()
to use -ESRCH as a "not found" code internally, but for user space it
should be translated into -ENETUNREACH. Handle the translation centrally in
ipv4-specific fib_lookup(), leaving the DECnet case alone.
On a related note, commit b7a71b51ee37d919e4098cd961d59a883fd272d8
("ipv4: removed redundant conditional") removed a similar translation from
ip_route_input_slow() prematurely AIUI.
Fixes: b7a71b51ee37 ("ipv4: removed redundant conditional")
Signed-off-by: Panu Matilainen <pmatilai@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Reject flow label key and mask values with invalid bits set.
Introduced by commit 3fdbd1ce11e5 ("openvswitch: add ipv6 'set'
action").
Signed-off-by: Jarno Rajahalme <jrajahalme@nicira.com>
Acked-by: Jesse Gross <jesse@nicira.com>
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
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dp read operations depends on ovs_dp_cmd_fill_info(). This API
needs to looup vport to find dp name, but vport lookup can
fail. Therefore to keep vport reference alive we need to
take ovs lock.
Introduced by commit 6093ae9abac1 ("openvswitch: Minimize
dp and vport critical sections").
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Acked-by: Andy Zhou <azhou@nicira.com>
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match_validate() enforce that a mask matching on NDP attributes has also an
exact match on ICMPv6 type.
The ICMPv6 type, which is 8-bit wide, is stored in the 'tp.src' field of
'struct sw_flow_key', which is 16-bit wide.
Therefore, an exact match on ICMPv6 type should only check the first 8 bits.
This commit fixes a bug that prevented flows with an exact match on NDP field
from being installed
Introduced by commit 03f0d916aa03 ("openvswitch: Mega flow implementation").
Signed-off-by: Daniele Di Proietto <ddiproietto@vmware.com>
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
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The checksum of ICMPv6 packets uses the IP pseudoheader as part of
the calculation, unlike ICMP in IPv4. This was not implemented,
which means that modifying the IP addresses of an ICMPv6 packet
would cause the checksum to no longer be correct as the psuedoheader
did not match.
Introduced by commit 3fdbd1ce11e5 ("openvswitch: add ipv6 'set' action").
Reported-by: Neal Shrader <icosahedral@gmail.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
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Need to free memory in case of sample action error.
Introduced by commit 651887b0c22cffcfce7eb9c ("openvswitch: Sample
action without side effects").
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
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Joe Stringer says:
====================
Implement ndo_gso_check() for vxlan nics
Most NICs that report NETIF_F_GSO_UDP_TUNNEL support VXLAN, and not other
UDP-based encapsulation protocols where the format and size of the header may
differ. This patch series implements a generic ndo_gso_check() for detecting
VXLAN, then reuses it for these NICs.
Implementation shamelessly stolen from Tom Herbert (with minor fixups):
http://thread.gmane.org/gmane.linux.network/332428/focus=333111
v2: Drop i40e/fm10k patches (code diverged; handling separately).
Refactor common code into vxlan_gso_check() helper.
Minor style fixes.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Use vxlan_gso_check() to advertise offload support for this NIC.
Signed-off-by: Joe Stringer <joestringer@nicira.com>
Acked-by: Shahed Shaikh <shahed.shaikh@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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