Nicolas Dichtel [Wed, 3 Sep 2014 21:59:21 +0000 (23:59 +0200)]
ipv6: fix a refcnt leak with peer addr
There is no reason to take a refcnt before deleting the peer address route.
It's done some lines below for the local prefix route because
inet6_ifa_finish_destroy() will release it at the end.
For the peer address route, we want to free it right now.
This bug has been introduced by commit caeaba79009c ("ipv6: add support of peer address").
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
net-timestamp: only report sw timestamp if reporting bit is set
The timestamping API has separate bits for generating and reporting
timestamps. A software timestamp should only be reported for a packet
when the packet has the relevant generation flag (SKBTX_..) set
and the socket has reporting bit SOF_TIMESTAMPING_SOFTWARE set.
The second check was accidentally removed. Reinstitute the original
behavior.
Tested:
Without this patch, Documentation/networking/txtimestamp reports
timestamps regardless of whether SOF_TIMESTAMPING_SOFTWARE is set.
After the patch, it only reports them when the flag is set.
Fixes: f24b9be5957b ("net-timestamp: extend SCM_TIMESTAMPING ancillary data struct") Signed-off-by: Willem de Bruijn <willemb@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
They are use less, and may generate compiling warnings, so remove them
(microblaze, arc, arm64, and unicore32 have already defined PCI_IOBASE).
The related warnings (with allmodconfig under microblaze):
CC [M] drivers/net/fddi/skfp/skfddi.o
In file included from drivers/net/fddi/skfp/skfddi.c:95:0:
drivers/net/fddi/skfp/h/skfbi.h:151:0: warning: "PCI_IOBASE" redefined
#define PCI_IOBASE 0xffffff00L /* Bit 31..8: I/O Base address */
^
In file included from include/linux/io.h:22:0,
from include/linux/pci.h:31,
from drivers/net/fddi/skfp/skfddi.c:82:
./arch/microblaze/include/asm/io.h:33:0: note: this is the location of the previous definition
#define PCI_IOBASE ((void __iomem *)_IO_BASE)
^
Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
l2tp: fix race while getting PMTU on PPP pseudo-wire
Use dst_entry held by sk_dst_get() to retrieve tunnel's PMTU.
The dst_mtu(__sk_dst_get(tunnel->sock)) call was racy. __sk_dst_get()
could return NULL if tunnel->sock->sk_dst_cache was reset just before the
call, thus making dst_mtu() dereference a NULL pointer:
Fixes: f34c4a35d879 ("l2tp: take PMTU from tunnel UDP socket") Signed-off-by: Guillaume Nault <g.nault@alphalink.fr> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
ipv6: fix rtnl locking in setsockopt for anycast and multicast
Calling setsockopt with IPV6_JOIN_ANYCAST or IPV6_LEAVE_ANYCAST
triggers the assertion in addrconf_join_solict()/addrconf_leave_solict()
ipv6_sock_ac_join(), ipv6_sock_ac_drop(), ipv6_sock_ac_close() need to
take RTNL before calling ipv6_dev_ac_inc/dec. Same thing with
ipv6_sock_mc_join(), ipv6_sock_mc_drop(), ipv6_sock_mc_close() before
calling ipv6_dev_mc_inc/dec.
This patch moves ASSERT_RTNL() up a level in the call stack.
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by: Sabrina Dubroca <sd@queasysnail.net> Reported-by: Tommi Rantala <tt.rantala@gmail.com> Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Andy King [Tue, 2 Sep 2014 20:13:44 +0000 (13:13 -0700)]
VMXNET3: Check for map error in vmxnet3_set_mc
We should check if the map of the table actually succeeds, and also free
resources accordingly.
Version bumped to 1.2.1.0
Acked-by: Shelley Gong <shelleygong@vmware.com> Acked-by: Bhavesh Davda <bhavesh@vmware.com> Signed-off-by: Andy King <acking@vmware.com> Reported-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: David S. Miller <davem@davemloft.net>
Li RongQing [Wed, 3 Sep 2014 09:43:45 +0000 (17:43 +0800)]
openvswitch: distinguish between the dropped and consumed skb
distinguish between the dropped and consumed skb, not assume the skb
is consumed always
Cc: Thomas Graf <tgraf@noironetworks.com> Cc: Pravin Shelar <pshelar@nicira.com> Signed-off-by: Li RongQing <roy.qing.li@gmail.com> Acked-by: Pravin B Shelar <pshelar@nicira.com> Signed-off-by: David S. Miller <davem@davemloft.net>
amd-xgbe: Fix initialization of the wrong spin lock
During allocation and initialization of the network driver structures,
the wrong pointer is used to initialize a spin lock. Fix the spin lock
initialization by using the proper pointer.
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Li RongQing [Tue, 2 Sep 2014 12:52:28 +0000 (20:52 +0800)]
openvswitch: fix a memory leak
The user_skb maybe be leaked if the operation on it failed and codes
skipped into the label "out:" without calling genlmsg_unicast.
Cc: Pravin Shelar <pshelar@nicira.com> Signed-off-by: Li RongQing <roy.qing.li@gmail.com> Acked-by: Pravin B Shelar <pshelar@nicira.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Pablo Neira [Tue, 2 Sep 2014 12:26:17 +0000 (14:26 +0200)]
netfilter: fix missing dependencies in NETFILTER_XT_TARGET_LOG
make defconfig reports:
warning: (NETFILTER_XT_TARGET_LOG) selects NF_LOG_IPV6 which has unmet direct dependencies (NET && INET && IPV6 && NETFILTER && NETFILTER_ADVANCED)
Fixes: d79a61d netfilter: NETFILTER_XT_TARGET_LOG selects NF_LOG_* Reported-by: kbuild test robot <fengguang.wu@intel.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
====================
pull request: Netfilter/IPVS fixes for net
The following patchset contains seven Netfilter fixes for your net
tree, they are:
1) Make the NAT infrastructure independent of x_tables, some users are
already starting to test nf_tables with NAT without enabling x_tables.
Without this patch for Kconfig, there's a superfluous dependency
between NAT and x_tables.
2) Allow to use 0 in the cgroup match, the kernel rejects with -EINVAL
with no good reason. From Daniel Borkmann.
3) Select CONFIG_NF_NAT from the nf_tables NAT expression, this also
resolves another NAT dependency with x_tables.
4) Use HAVE_JUMP_LABEL instead of CONFIG_JUMP_LABEL in the Netfilter hook
code as elsewhere in the kernel to resolve toolchain problems, from
Zhouyi Zhou.
5) Use iptunnel_handle_offloads() to set up tunnel encapsulation
depending on the offload capabilities, reported by Alex Gartrell
patch from Julian Anastasov.
6) Fix wrong family when registering the ip_vs_local_reply6() hook,
also from Julian.
7) Select the NF_LOG_* symbols from NETFILTER_XT_TARGET_LOG. Rafał
Miłecki reported that when jumping from 3.16 to 3.17-rc, his log
target is not selected anymore due to changes in the previous
development cycle to accomodate the full logging support for
nf_tables.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
bnx2x: Configure device endianity on driver load and reset endianity on removal.
Some hosts can be both little and big endian.
In certain scenarios a big endian kernel can kexec a little endian kernel.
This patch fixes this case from both ends:
1) Return endianity to original values on shutdown (in case little endian kernel boots after we shutdown).
2) Do not rely on HW reset values when loading driver in little endian kernel
but configure them explicitly (in case previous kernel was big endian and did not reset the HW).
Signed-off-by: Manish Chopra <manish.chopra@qlogic.com> Signed-off-by: Ariel Elior <Ariel.Elior@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
When qeth device is queried for ethtool data, hardware operation
is performed to extract the necessary information from the card.
If the card is not online at the moment (e.g. it is undergoing
recovery), this operation produces undesired effects like
temporarily freezing the system. This patch prevents execution
of the hardware query operation when the card is not online.
In such case, ioctl() operation returns error with errno ENODEV.
Reviewed-by: Ursula Braun <ursula.braun@de.ibm.com> Signed-off-by: Eugene Crosser <Eugene.Crosser@ru.ibm.com> Signed-off-by: Frank Blaschka <blaschka@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Calxeda 1G/10G XGMAC Ethernet support should be available only on
Calxeda ECX-1000/2000 (Highbank/Midway) platforms.
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Cc: Rob Herring <robh@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Renesas SuperH Ethernet support should be available only on
Renesas ARM SoCs and SuperH architecture.
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Cc: Simon Horman <horms@verge.net.au> Cc: Magnus Damm <magnus.damm@gmail.com> Acked-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Simon Horman <horms+renesas@verge.net.au> Signed-off-by: David S. Miller <davem@davemloft.net>
Ivan Vecera [Mon, 1 Sep 2014 12:21:57 +0000 (14:21 +0200)]
tg3: prevent ifup/ifdown during PCI error recovery
The patch fixes race conditions between PCI error recovery callbacks and
potential ifup/ifdown.
First, if ifup (tg3_open) is called between tg3_io_error_detected() and
tg3_io_resume() then tp->timer is armed twice before expiry. Once during
tg3_open() and again during tg3_io_resume(). This results in BUG
at kernel/time/timer.c:945.
Second, if ifdown (tg3_close) is called between tg3_io_error_detected()
and tg3_io_resume() then tg3_napi_disable() is called twice without
a tg3_napi_enable between. Once during tg3_io_error_detected() and again
during tg3_close(). The tg3_io_resume() then hangs on rtnl_lock().
v2: Added logging messages per Prashant's request
Cc: Prashant Sreedharan <prashant@broadcom.com> Cc: Michael Chan <mchan@broadcom.com> Signed-off-by: Ivan Vecera <ivecera@redhat.com> Acked-by: Prashant Sreedharan <prashant@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 2 Sep 2014 06:00:49 +0000 (23:00 -0700)]
Merge branch 'cxgb4'
Hariprasad Shenai says:
====================
Trivial fixes for cxgb4
This patch series adds support to fix T5 adapter accessing T4 adapter registers,
issue mbox command on correct mbox for physical function, avoid dumping write
only registers, use correct length for adapter part number and support to detect
and display firmware reported errors.
The patches series is created against 'net' tree.
And includes patches on cxgb4 driver.
We have included all the maintainers of respective drivers. Kindly review the
change and let us know in case of any review comments.
Thanks
V2:
Added description for each patch as per David Miller's comment
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Fixes few register access for both T4 and T5.
PCIE_CORE_UTL_SYSTEM_BUS_AGENT_STATUS & PCIE_CORE_UTL_PCI_EXPRESS_PORT_STATUS
is T4 only register don't let T5 access them. For T5 MA_PARITY_ERROR_STATUS2
is additionally read. MPS_TRC_RSS_CONTROL is T4 only register, for T5 use
MPS_T5_TRC_RSS_CONTROL.
Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
cxgb4: Fixed the code to use correct length for part number
Previously it was using the length value of serial number.
Also added macro for VPD unique identifier (0x82).
Signed-off-by: Casey Leedom <leedom@chelsio.com> Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
cxgb4: Fix for handling 1Gb/s SFP+ Transceiver Modules
We previously assumed that a Port's Capabilities and Advertised Capabilities
would never change from Port Initialization time. This is no longer true
when we can have 10Gb/s and 1Gb/s SFP+ Transceiver Modules randomly swapped.
Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
For new GMACs it is possible to turn-on/off the COE.
In the current driver, when disabled the Rx-checksum
via ethtool, the tool reported that csum was disabled
but the HW continued to set the IPC. Indeed this is
because the fix_features allows this. So the patch
fixes this problem by adding the set_features.
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
The following series of patches includes fixes to the driver.
- Tx hardware queue flushing support dependent on hardware version
- Incorrect reported fifo size
- Proper mmd select in XPCS debugfs support
- Proper queue count for configuring Tx flow control
This patch series is based on net.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Lendacky, Thomas [Fri, 29 Aug 2014 18:17:08 +0000 (13:17 -0500)]
amd-xgbe: Use the Tx queue count for Tx flow control support
When configuring Tx flow control the Rx queue count was used instead of
the Tx queue count for looping through the Tx hardware queues. Fix the
code to use the Tx queue count.
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Lendacky, Thomas [Fri, 29 Aug 2014 18:17:02 +0000 (13:17 -0500)]
amd-xgbe: Fix the xpcs mmd debugfs support
The debugfs support for the xpcs registers did not properly use the
specified mmd (xpcs_mmd entry) which resulted in the default mmd
value always being used. Update the debugfs support to generate the
proper mmd register value.
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Lendacky, Thomas [Fri, 29 Aug 2014 18:16:56 +0000 (13:16 -0500)]
amd-xgbe: Reported fifo size from hardware is not correct
The fifo size reported by the hardware is not correct. Add support
to limit the reported size to what is actually present. Also, fix
the argument types used in the fifo size calculation function.
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Lendacky, Thomas [Fri, 29 Aug 2014 18:16:50 +0000 (13:16 -0500)]
amd-xgbe: Check for Tx hardware queue flushing support
The flushing of the Tx hardware queues is only supported at a certain
level of the hardware. Retrieve the current version of the hardware
and use that to determine if flushing is supported.
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com> Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/built-in.o: In function `xgene_enet_delete_ring':
xgene_enet_main.c:(.text+0x28755a): undefined reference to `dma_free_coherent'
drivers/built-in.o: In function `xgene_enet_setup_tx_desc':
xgene_enet_main.c:(.text+0x287774): undefined reference to `dma_map_single'
xgene_enet_main.c:(.text+0x287780): undefined reference to `dma_mapping_error'
drivers/built-in.o: In function `xgene_enet_tx_completion':
xgene_enet_main.c:(.text+0x2878e6): undefined reference to `dma_unmap_single'
drivers/built-in.o: In function `xgene_enet_refill_bufpool':
xgene_enet_main.c:(.text+0x2879d4): undefined reference to `dma_map_single'
xgene_enet_main.c:(.text+0x2879e0): undefined reference to `dma_mapping_error'
drivers/built-in.o: In function `xgene_enet_rx_frame':
xgene_enet_main.c:(.text+0x287aaa): undefined reference to `dma_unmap_single'
drivers/built-in.o: In function `xgene_enet_free_desc_ring':
xgene_enet_main.c:(.text+0x287f98): undefined reference to `dma_free_coherent'
drivers/built-in.o: In function `xgene_enet_create_desc_ring':
xgene_enet_main.c:(.text+0x28808e): undefined reference to `dma_alloc_coherent'
drivers/built-in.o: In function `xgene_enet_probe':
xgene_enet_main.c:(.text+0x2883d4): undefined reference to `dma_set_mask'
xgene_enet_main.c:(.text+0x2883ec): undefined reference to `dma_supported'
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Please pull this batch of fixes intended for the 3.17 stream.
For the Bluetooth/6LowPAN/802.15.4 bits, Johan says:
'It contains a connection reference counting fix for LE where a
connection might stay up even though it should get disconnected.
The other 802.15.4 6LoWPAN related patches were sent to the bluetooth
tree by Alexander Aring and described as follows by him:
"
these patches contains patches for the bluetooth branch.
This series includes memory leak fixes and an errno value fix.
Also there are two patches for sending and receiving 1280 6LoWPAN
packets, which makes the IEEE 802.15.4 6LoWPAN stack more RFC
compliant.
"'
Along with that...
Alexey Khoroshilov fixes a use-after-free bug on at76c50x-usb.
Hauke Mehrtens adds a PCI ID to bcma.
Himangi Saraogi fixes a silly "A || A" test in rtlwifi.
Larry Finger adds a device ID to rtl8192cu.
Maks Naumov fixes a strncmp argument in ath9k.
Álvaro Fernández Rojas adds a PCI ID to ssb.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
CONFIG_NETFILTER_XT_TARGET_LOG is not selected anymore when jumping
from 3.16 to 3.17-rc1 if you don't set on the new NF_LOG_IPV4 and
NF_LOG_IPV6 switches.
Change this to select the three new symbols NF_LOG_COMMON, NF_LOG_IPV4
and NF_LOG_IPV6 instead, so NETFILTER_XT_TARGET_LOG remains enabled
when moving from old to new kernels.
Reported-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
David S. Miller [Mon, 1 Sep 2014 05:01:22 +0000 (22:01 -0700)]
Merge branch 'stmmac-eee'
Giuseppe Cavallaro says:
====================
stmmac EEE fixes
This is a subset of patches to provide some fixes for the EEE support inside the
driver.
Patches have been tested on boards EEE capable plugged on switch w/ w/o EEE
support.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
In case of PLS is active the PLS (PHY Link Status) bit in
the Reg12 has to be set to allow the MAC to asserts the LPI
pattern when the link is ok.
Signed-off-by: nandini sharma <nandini.sharma@st.com> Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
nandini sharma [Thu, 28 Aug 2014 06:11:42 +0000 (08:11 +0200)]
stmmac: fix LPI TW timer value to 20.5us.
The value for LPI TW timer has to be updated to 0x1E that is the hardcoded value
of 20.5us and it will apply to all EEE enabled Remote PHYs.
Disadvantage is for PHY's that support lesser wakeup time but we can accept it
waiting to implement LLDP to negotiate the Wakeup time of Remote PHY.
Signed-off-by: nandini sharma <nandini.sharma@st.com> Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
nandini sharma [Thu, 28 Aug 2014 06:11:41 +0000 (08:11 +0200)]
stmmac: fix the EEE LPI Macro definitions.
This patch is to fix the definition of macros for EEE otherwise the LPI TX/RX
entry/exit cannot be properly managed.
Signed-off-by: Nandini Sharma <nandini.sharma@st.com> Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann [Thu, 28 Aug 2014 13:28:26 +0000 (15:28 +0200)]
net: sctp: fix ABI mismatch through sctp_assoc_to_state helper
Since SCTP day 1, that is, 19b55a2af145 ("Initial commit") from lksctp
tree, the official <netinet/sctp.h> header carries a copy of enum
sctp_sstat_state that looks like (compared to the current in-kernel
enumeration):
This header was later on also placed into the uapi, so that user space
programs can compile without having <netinet/sctp.h>, but the shipped
with <linux/sctp.h> instead.
While RFC6458 under 8.2.1.Association Status (SCTP_STATUS) says that
sstat_state can range from SCTP_CLOSED to SCTP_SHUTDOWN_ACK_SENT, we
nevertheless have a what it appears to be dummy SCTP_EMPTY state from
the very early days.
While it seems to do just nothing, commit 0b8f9e25b0aa ("sctp: remove
completely unsed EMPTY state") did the right thing and removed this dead
code. That however, causes an off-by-one when the user asks the SCTP
stack via SCTP_STATUS API and checks for the current socket state thus
yielding possibly undefined behaviour in applications as they expect
the kernel to tell the right thing.
The enumeration had to be changed however as based on the current socket
state, we access a function pointer lookup-table through this. Therefore,
I think the best way to deal with this is just to add a helper function
sctp_assoc_to_state() to encapsulate the off-by-one quirk.
Reported-by: Tristan Su <sooqing@gmail.com> Fixes: 0b8f9e25b0aa ("sctp: remove completely unsed EMPTY state") Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Acked-by: Vlad Yasevich <vyasevich@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Thu, 28 Aug 2014 03:49:34 +0000 (20:49 -0700)]
net: attempt a single high order allocation
In commit ed98df3361f0 ("net: use __GFP_NORETRY for high order
allocations") we tried to address one issue caused by order-3
allocations.
We still observe high latencies and system overhead in situations where
compaction is not successful.
Instead of trying order-3, order-2, and order-1, do a single order-3
best effort and immediately fallback to plain order-0.
This mimics slub strategy to fallback to slab min order if the high
order allocation used for performance failed.
Order-3 allocations give a performance boost only if they can be done
without recurring and expensive memory scan.
Quoting David :
The page allocator relies on synchronous (sync light) memory compaction
after direct reclaim for allocations that don't retry and deferred
compaction doesn't work with this strategy because the allocation order
is always decreasing from the previous failed attempt.
This means sync light compaction will always be encountered if memory
cannot be defragmented or reclaimed several times during the
skb_page_frag_refill() iteration.
Signed-off-by: Eric Dumazet <edumazet@google.com> Acked-by: David Rientjes <rientjes@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Sat, 30 Aug 2014 03:13:05 +0000 (20:13 -0700)]
Merge branch 'mlx4-net'
Or Gerlitz says:
====================
Setup mlx4 user space Ethernet QPs to properly handle VXLAN
This short series fixes the mlx4 driver setting of user space Ethernet QPs
(e.g those opened by DPDK applications) such that they will properly handle
VXLAN traffic/offloads
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Or Gerlitz [Wed, 27 Aug 2014 13:47:48 +0000 (16:47 +0300)]
net/mlx4: Move the tunnel steering helper function to mlx4_core
Move the function which we use to set VXLAN DMFS (flow-steering) rules
from mlx4_en to mlx4_core. This refactoring will allow the mlx4_ib driver
to call the helper for the use case of user-space RAW Ethernet QPs, such
that they can serve VXLAN traffic too.
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Enabling DMA_API_DEBUG, warnings are reported at runtime
because the device driver frees DMA memory with wrong functions
and it does not call dma_mapping_error after mapping dma memory.
The first problem is fixed by of introducing a flag that helps us
keeping track which mapping technique was used, so that we can use
the right API for unmap.
This approach was inspired by the e1000 driver, which uses a similar
technique.
Signed-off-by: Andre Draszik <andre.draszik@st.com> Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com> Reviewed-by: Denis Kirjanov <kda@linux-powerpc.org> Cc: Hans de Goede <hdegoede@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
The PTP reference clock, used for setting the addend in the Timestamp Addend
Register, was erroneously hard-coded (as reported in the databook just as
example).
The patch removes the macro named: STMMAC_SYSCLOCK and allows to use a
reference clock (clk_ptp_ref_i) that can be passed from the platform.
If not passed, the main driver clock will be used as default; note that
this can be fine on some platforms.
Note that, prior this patch, using the old STMMAC_SYSCLOCK on some platforms,
as side effect, the ptp clock can move faster/slower than the system clock.
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This patch is to w/a a problem that happens on some boxes when run at 10Mbps
Half duplex mode.
During the transmission the CSR signal is asserted for some time and the frames
aborted because of carrier sense error.
This is reported by MMC HW counter: txcarrier signal.
This actually is a false carrier so the frames are good and there is no reason
to ask for dropping them.
This patch so disables the Carrier Sense During Transmission
and this means that the MAC transmitter ignore the CRS signal
during frame transmission in Half-Duplex mode.
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com> Acked-by: Vince Bridgers <vbridgers2013@gmail.com> Acked-by: Ley Foon Tan <lftan@altera.com> Acked-by: Chen-Yu Tsai <wens@csie.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Julian Anastasov [Fri, 22 Aug 2014 14:53:41 +0000 (17:53 +0300)]
ipvs: fix ipv6 hook registration for local replies
commit fc604767613b6d2036cdc35b660bc39451040a47
("ipvs: changes for local real server") from 2.6.37
introduced DNAT support to local real server but the
IPv6 LOCAL_OUT handler ip_vs_local_reply6() is
registered incorrectly as IPv4 hook causing any outgoing
IPv4 traffic to be dropped depending on the IP header values.
Chris tracked down the problem to CONFIG_IP_VS_IPV6=y
Bug report: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1349768
Reported-by: Chris J Arges <chris.j.arges@canonical.com> Tested-by: Chris J Arges <chris.j.arges@canonical.com> Signed-off-by: Julian Anastasov <ja@ssi.bg> Signed-off-by: Simon Horman <horms@verge.net.au>
According to the Std 802.3az if the EEE Adv (Reg 7.60), Link partner ability
(Reg 7.61) and EEE capability (Register 3.20) bits return 0 this means no EEE
is supported. So this patch fixes the checks inside the phy_init_eee function.
Signed-off-by: Nandini Sharma <nandini.sharma@st.com> Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 26 Aug 2014 03:21:55 +0000 (20:21 -0700)]
mvneta: Add missing if_vlan.h include.
drivers/net/ethernet/marvell/mvneta.c: In function 'mvneta_skb_tx_csum':
drivers/net/ethernet/marvell/mvneta.c:1374:3: error: implicit declaration of function 'vlan_get_protocol' [-Werror=implicit-function-declaration]
__be16 l3_proto = vlan_get_protocol(skb);
^
Reporeted-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
Wei Liu [Mon, 25 Aug 2014 15:44:00 +0000 (16:44 +0100)]
xen-netback: move netif_napi_add before binding interrupt
Interrupt is enabled when bind_interdomain_evtchn_to_irqhandler returns.
If there's interrupt pending interrupt handler is invoked.
NAPI needs to be initialised before binding interrupt otherwise the
interrupt handler will try to scheduling a NAPI instance that is not
initialised yet, resulting in kernel OOPS.
This fixes a regression introduced in ea2c5e13 ("xen-netback: move NAPI
add/remove calls").
Ideally function calls to create kthreads should also be moved before
binding but I intent to fix this regression with minimal changes and
refactor the code with another patch.
Reported-by: Thomas Leonard <talex5@gmail.com> Signed-off-by: Wei Liu <wei.liu2@citrix.com> Cc: Ian Campbell <ian.campbell@citrix.com> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 26 Aug 2014 00:27:47 +0000 (17:27 -0700)]
Merge branch 'tso_fix'
Vladislav Yasevich says:
====================
Fix TSO and checksum issues with non-accelerated vlan traffic.
I've recently ran across something rather interesting when testing vlans
from inside VMs. In some scenarios I was getting awfull thruput.
Some debugging uncovered a very scary packet corruption. I was
seeing packets that had original TSO length as IP total length
and their ip checksum was 0. This was with e1000e driver.
A bit more debugging uncovered an assumption made by that driver
that skb->protocol will contain l3 protocol information. This
was not the case in my setup since I manually turned off vlan
tx acceleration for the device. This caused the driver to not
initialize the tso information correctly and resulted in
corrupt TSO frames on the wire.
I decided to do some auditing of the usage of skb->protocols
in the drivers. Out of all the drivers, the included 8 appear
to be effected. They all allow user to control vlan acceleration
settings, all support TSO on vlan devices, and all use
skb->protocol to decide how to encode TSO information. Some
also have similar problems when initializing hw checksum information.
On such device, it is simple enough to reproduce the issue.
Simply turn off TX VLAN acceleration on the device, create a vlan,
and run you favorite network performance tool.
There is 1 driver I ran across that I belive will trigger a BUG
in the system when used with vlans. That driver is tile/tilepro.c
I have not changed it in this patch set and would hope that
the maintainer has time to look at it.
V2: Fix i40ev using the wrong function name. Full build.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Vlad Yasevich [Mon, 25 Aug 2014 14:34:55 +0000 (10:34 -0400)]
qlge: Fix TSO for non-accelerated vlan traffic
This device claims TSO support for vlans. It also allows a user to
control vlan acceleration offloading. As such, it is possible to turn
off vlan acceleration and configure a vlan which will continue to send
TSO traffic.
In such situation the packet passed down the the device will contain
a vlan header and skb->protocol will be set to ETH_P_8021Q.
The device assumes that skb->protocol contains network protocol
value and uses that value to set up TSO information.
This results in corrupted frames sent on the wire.
This patch extracts the protocol value correctly by using a
vlan_get_protocol() helper and corrects corrupt TSO frames.
CC: Shahed Shaikh <shahed.shaikh@qlogic.com> CC: Jitendra Kalsaria <jitendra.kalsaria@qlogic.com> CC: Ron Mercer <ron.mercer@qlogic.com> CC: linux-driver@qlogic.com Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com> Acked-by: Shahed Shaikh <shahed.shaikh@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Vlad Yasevich [Mon, 25 Aug 2014 14:34:54 +0000 (10:34 -0400)]
mvneta: Fix TSO and checksum for non-acceleration vlan traffic
This driver doesn't appear to support vlan acceleration at
all. However, it does claim to support TSO and IP checksums
for vlan devices. Thus any configured vlan device would
end up passing down partial checksums or TSO frames.
The driver also uses the value from skb->protocol to
determine TSO and checksum offload information, but assumes
that skb->protocol holds the l3 protocol information.
As a result, vlan traffic with partial checksums or TSO
will fail those checks and TSO will not happen.
Fix this by using vlan_get_protocol() helper.
CC: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Vlad Yasevich [Mon, 25 Aug 2014 14:34:53 +0000 (10:34 -0400)]
i40evf: Fix TSO and hw checksums for non-accelerated vlan packets.
This device claims TSO and checksum support for vlans. It also
allows a user to control vlan acceleration offloading. As such,
it is possible to turn off vlan acceleration and configure a vlan
which will continue to support TSO and hw checksums.
In such situation the packet passed down the the device will contain
a vlan header and skb->protocol will be set to ETH_P_8021Q.
The device assumes that skb->protocol contains network protocol
value and uses that value to set up TSO and checksum information.
This results in corrupted frames sent on the wire.
This patch extract the protocol value correctly and corrects TSO
and checksums for non-accelerated traffic.
Fix this by using vlan_get_protocol() helper.
CC: Jeff Kirsher <jeffrey.t.kirsher@intel.com> CC: Jesse Brandeburg <jesse.brandeburg@intel.com> CC: Bruce Allan <bruce.w.allan@intel.com> CC: Carolyn Wyborny <carolyn.wyborny@intel.com> CC: Don Skidmore <donald.c.skidmore@intel.com> CC: Greg Rose <gregory.v.rose@intel.com> CC: Alex Duyck <alexander.h.duyck@intel.com> CC: John Ronciak <john.ronciak@intel.com> CC: Mitch Williams <mitch.a.williams@intel.com> CC: Linux NICS <linux.nics@intel.com> CC: e1000-devel@lists.sourceforge.net Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Vlad Yasevich [Mon, 25 Aug 2014 14:34:52 +0000 (10:34 -0400)]
i40e: Fix TSO and hw checksums for non-accelerated vlan packets.
This device claims TSO and checksum support for vlans. It also
allows a user to control vlan acceleration offloading. As such,
it is possible to turn off vlan acceleration and configure a vlan
which will continue to support TSO and hw checksums.
In such situation the packet passed down the the device will contain
a vlan header and skb->protocol will be set to ETH_P_8021Q.
The device assumes that skb->protocol contains network protocol
value and uses that value to set up TSO and checksum information.
This results in corrupted frames sent on the wire.
This patch extract the protocol value correctly and corrects TSO
and checksums for non-accelerated traffic.
Fix this by using vlan_get_protocol() helper.
CC: Jeff Kirsher <jeffrey.t.kirsher@intel.com> CC: Jesse Brandeburg <jesse.brandeburg@intel.com> CC: Bruce Allan <bruce.w.allan@intel.com> CC: Carolyn Wyborny <carolyn.wyborny@intel.com> CC: Don Skidmore <donald.c.skidmore@intel.com> CC: Greg Rose <gregory.v.rose@intel.com> CC: Alex Duyck <alexander.h.duyck@intel.com> CC: John Ronciak <john.ronciak@intel.com> CC: Mitch Williams <mitch.a.williams@intel.com> CC: Linux NICS <linux.nics@intel.com> CC: e1000-devel@lists.sourceforge.net Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Vlad Yasevich [Mon, 25 Aug 2014 14:34:51 +0000 (10:34 -0400)]
ehea: Fix TSO and hw checksums with non-accelerated vlan packets.
The driver claims that it can do TSO and IP checksums on vlan
devices and also allows user to control vlan acceleration offloading.
This makes it possible to push traffic to this driver that has TSO or
partial checksums set, but also have a non-accelearted vlan
header. In this case, the driver will fail to correctly
identify such traffic and will not correctly perform
segmentation and checksum calculation.
Fix this by using vlan_get_protocol() helper instead of
assuming skb->protocol always has this information.
CC: Thadeu Lima de Souza Cascardo <cascardo@linux.vnet.ibm.com> Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Vlad Yasevich [Mon, 25 Aug 2014 14:34:50 +0000 (10:34 -0400)]
bna: Support TSO and partial checksum with non-accelerated vlans.
This device claims TSO and checksum support for vlans. It also
allows a user to control vlan acceleration offloading. As such,
it is possible to turn off vlan acceleration and configure a vlan
which will continue to support TSO.
In such situation the packet passed down the the device will contain
a vlan header and skb->protocol will be set to ETH_P_8021Q.
The device assumes that skb->protocol contains network protocol
value and uses that value to set up TSO information. This results
in corrupted frames sent on the wire.
This patch extract the protocol value correctly and corrects TSO
and checksums for non-accelerated traffic.
CC: Rasesh Mody <rmody@brocade.com> Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Vlad Yasevich [Mon, 25 Aug 2014 14:34:49 +0000 (10:34 -0400)]
e1000: Fix TSO for non-accelerated vlan traffic
This device claims TSO and checksum support for vlans. It also
allows a user to control vlan acceleration offloading. As such,
it is possible to turn off vlan acceleration and configure a vlan
which will continue to support TSO.
In such situation the packet passed down the the device will contain
a vlan header and skb->protocol will be set to ETH_P_8021Q.
The device assumes that skb->protocol contains network protocol
value and uses that value to set up TSO and checksum information.
This will results in corrupted frames sent on the wire.
This patch extract the protocol value correctly and corrects TSO
for non-accelerated traffic.
CC: Jeff Kirsher <jeffrey.t.kirsher@intel.com> CC: Jesse Brandeburg <jesse.brandeburg@intel.com> CC: Bruce Allan <bruce.w.allan@intel.com> CC: Carolyn Wyborny <carolyn.wyborny@intel.com> CC: Don Skidmore <donald.c.skidmore@intel.com> CC: Greg Rose <gregory.v.rose@intel.com> CC: Alex Duyck <alexander.h.duyck@intel.com> CC: John Ronciak <john.ronciak@intel.com> CC: Mitch Williams <mitch.a.williams@intel.com> CC: Linux NICS <linux.nics@intel.com> CC: e1000-devel@lists.sourceforge.net Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Vlad Yasevich [Mon, 25 Aug 2014 14:34:48 +0000 (10:34 -0400)]
e1000e: Fix TSO with non-accelerated vlans
This device claims TSO support for vlans. It also allows a
user to control vlan acceleration offloading. As such, it is
possible to turn off vlan acceleration and configure a vlan
which will continue to support TSO.
In such situation the packet passed down the the device will contain
a vlan header and skb->protocol will be set to ETH_P_8021Q.
The device assumes that skb->protocol contains network protocol
value and uses that value to set up TSO information. This results
in corrupted frames sent on the wire. Corruptions include
incorrect IP total length and invalid IP checksum.
This patch extract the protocol value correctly and corrects TSO
for non-accelerated traffic.
CC: Jeff Kirsher <jeffrey.t.kirsher@intel.com> CC: Jesse Brandeburg <jesse.brandeburg@intel.com> CC: Bruce Allan <bruce.w.allan@intel.com> CC: Carolyn Wyborny <carolyn.wyborny@intel.com> CC: Don Skidmore <donald.c.skidmore@intel.com> CC: Greg Rose <gregory.v.rose@intel.com> CC: Alex Duyck <alexander.h.duyck@intel.com> CC: John Ronciak <john.ronciak@intel.com> CC: Mitch Williams <mitch.a.williams@intel.com> CC: Linux NICS <linux.nics@intel.com> CC: e1000-devel@lists.sourceforge.net Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Jonas Jensen [Mon, 25 Aug 2014 14:22:22 +0000 (16:22 +0200)]
net: moxa: replace build_skb() with netdev_alloc_skb_ip_align() / memcpy()
build_skb() is used to make skbs out of existing RX ring memory
which is bad because the RX ring is allocated only once, on probe.
Memory corruption occur because said memory is reclaimed, i.e.
__kfree_skb() (and eventually put_page()).
Replace build_skb() with netdev_alloc_skb_ip_align() and use memcpy().
Remove SKB_DATA_ALIGN() from RX buffer size while we're at it.
Michal Kubeček [Mon, 25 Aug 2014 13:16:22 +0000 (15:16 +0200)]
net: fix checksum features handling in netif_skb_features()
This is follow-up to
da08143b8520 ("vlan: more careful checksum features handling")
which introduced more careful feature intersection in vlan code,
taking into account that HW_CSUM should be considered superset
of IP_CSUM/IPV6_CSUM. The same is needed in netif_skb_features()
in order to avoid offloading mismatch warning when vlan is
created on top of a bond consisting of slaves supporting IP/IPv6
checksumming but not vlan Tx offloading.
Signed-off-by: Michal Kubecek <mkubecek@suse.cz> Signed-off-by: David S. Miller <davem@davemloft.net>
Code manipulating sysfs symlinks on adjacent net_devices(s)
currently doesn't take into account that devices potentially
belong to different namespaces.
This patch trying to fix an issue as follows:
- check for net_ns before creating / deleting symlink.
for now only netdev_adjacent_rename_links and
__netdev_adjacent_dev_remove are affected, afaics
__netdev_adjacent_dev_insert implies both net_devs
belong to the same namespace.
- Drop all existing symlinks to / from all adj_devs before
switching namespace and recreate them just after.
Signed-off-by: Alexander Y. Fomichev <git.user@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Hauke Mehrtens [Sat, 23 Aug 2014 15:58:11 +0000 (17:58 +0200)]
bcma: add PCI ID for spromless BCM43217
This adds the PCI ID a BCM43217 without a sprom.
This devices was found on a Netgear R6250 attached to a BCM4708 ARM SoC.
bcma: bus1: Found chip with id 0xA8D1, rev 0x00 and package 0x08
bcma: bus1: Core 0 found: ChipCommon (manuf 0x4BF, id 0x800, rev 0x27, class 0x0)
bcma: bus1: Core 1 found: IEEE 802.11 (manuf 0x4BF, id 0x812, rev 0x1E, class 0x0)
bcma: bus1: Core 2 found: PCIe (manuf 0x4BF, id 0x820, rev 0x14, class 0x0)
b43-phy0: Broadcom 43217 WLAN found (core revision 30)
b43-phy0: Found PHY: Analog 9, Type 4 (N), Revision 17
b43-phy0: Found Radio: Manuf 0x17F, ID 0x2057, Revision 14, Version 1
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
at76c50x-usb: fix use after free on failure path in at76_probe()
After commit 174beab7d445 ("at76c50x-usb: Don't perform DMA from stack memory")
at76_delete_device() and usb_put_dev() are called both
if at76_init_new_device() fails in at76_probe().
But at76_delete_device() does usb_put_dev(priv->dev) itself
that means double usb_put_dev().
The patch avoids the problem by moving usb_put_dev() from
at76_delete_device() to at76_disconnect().
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru> Signed-off-by: John W. Linville <linville@tuxdriver.com>
is optimised away by the compiler, due to the second initializer,
therefore initialising .sin.sin_addr.s_addr always to 0.
This results in netlink messages indicating a L3 miss never contain the
missed IP address. This was observed with GCC 4.8 and 4.9. I do not know about previous versions.
The problem affects user space programs relying on an IP address being
sent as part of a netlink message indicating a L3 miss.
Changing
.sa.sa_family = AF_INET,
to
.sin.sin_family = AF_INET,
fixes the problem.
Signed-off-by: Gerhard Stenzel <gerhard.stenzel@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Fri, 22 Aug 2014 21:50:21 +0000 (14:50 -0700)]
Merge tag 'pwm/for-3.17-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm
Pull pwm fix from Thierry Reding:
"Just one bugfix for the PWM lookup table code that would cause a PWM
channel to be set to the wrong period and polarity for non-perfect
matches"
* tag 'pwm/for-3.17-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm:
pwm: Fix period and polarity in pwm_get() for non-perfect matches
Pull networking fixes from David Miller:
"Here are some bug fixes that have piled up during ksummit/linuxcon.
1) Fix endian problems in ibmveth, from Anton Blanchard.
2) IPV6 routing code does GFP_KERNEL allocation in atomic, fix from
Benjamin Block.
3) SCTP association fixes from Daniel Borkmann.
4) When multiple VLAN headers are present we have to make sure the
second and subsequent ones are pullable in the SKB otherwise we
blindly dereference garbage. From Jiri Benc.
5) The argument adjustment of the signature of hlist_add_after*()
introduced a regression in the batman-adv code, fix from Sven
Eckelmann.
6) Fix TX hang handling to avoid a panic in i40e, from Anjali Singhai
Jain.
7) PTP flag test is inverted in i40e driver, from Jesse Brandeburg.
8) ATM LEC driver needs to hold RTNL mutex over MTU changes, from
Chas Williams.
9) Truncate packets larger then the TPACKET_V3 format configured
buffers, otherwise we overwrite past the end of said buffers.
From Eric Dumazet.
10) Fix endianness bugs in qlcnic firmware handling, from Rajesh
Borundia and Shahed Shaikh.
11) CXGB4 sometimes doesn't get all of the TX completion events it
should resulting in SKBs getting stuck in the TX queue, from
Hariprasad Shenai.
12) When the FEC chip's PTP clock is disabled, you can't access the
register. Add necessary checks to avoid the resulting hang, from
Fugang Duan"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (37 commits)
drivers: isdn: eicon: xdi_msg.h: Fix typo in #ifndef
net: sctp: fix suboptimal edge-case on non-active active/retrans path selection
net: sctp: spare unnecessary comparison in sctp_trans_elect_best
net: ethernet: broadcom: bnx2x: Remove redundant #ifdef
ibmveth: Fix endian issues with rx_no_buffer statistic
net: xgene: fix possible NULL dereference in xgene_enet_free_desc_rings()
openvswitch: fix panic with multiple vlan headers
net: ipv6: fib: don't sleep inside atomic lock
net: fec: ptp: avoid register access when ipg clock is disabled
cxgb4: Free completed tx skbs promptly
cxgb4: Fix race condition in cleanup
sctp: not send SCTP_PEER_ADDR_CHANGE notifications with failed probe
bnx2x: Revert UNDI flushing mechanism
qlcnic: Fix endianess issue in firmware load from file operation
qlcnic: Fix endianess issue in FW dump template header
qlcnic: Fix flash access interface to application
MAINTAINERS: Add section for MRF24J40 IEEE 802.15.4 radio driver
macvlan: Allow setting multicast filter on all macvlan types
packet: handle too big packets for PACKET_V3
MAINTAINERS: add entry for ec_bhf driver
...
Daniel Borkmann [Fri, 22 Aug 2014 11:03:30 +0000 (13:03 +0200)]
net: sctp: fix suboptimal edge-case on non-active active/retrans path selection
In SCTP, selection of active (T.ACT) and retransmission (T.RET)
transports is being done whenever transport control operations
(UP, DOWN, PF, ...) are engaged through sctp_assoc_control_transport().
Commits 4c47af4d5eb2 ("net: sctp: rework multihoming retransmission
path selection to rfc4960") and a7288c4dd509 ("net: sctp: improve
sctp_select_active_and_retran_path selection") have both improved
it towards a more fine-grained and optimal path selection.
Currently, the selection algorithm for T.ACT and T.RET is as follows:
1) Elect the two most recently used ACTIVE transports T1, T2 for
T.ACT, T.RET, where T.ACT<-T1 and T1 is most recently used
2) In case primary path T.PRI not in {T1, T2} but ACTIVE, set
T.ACT<-T.PRI and T.RET<-T1
3) If only T1 is ACTIVE from the set, set T.ACT<-T1 and T.RET<-T1
4) If none is ACTIVE, set T.ACT<-best(T.PRI, T.RET, T3) where
T3 is the most recently used (if avail) in PF, set T.RET<-T.PRI
Prior to above commits, 4) was simply a camp on T.ACT<-T.PRI and
T.RET<-T.PRI, ignoring possible paths in PF. Camping on T.PRI is
still slightly suboptimal as it can lead to the following scenario:
T.PRI is permanently down, T2 is put briefly into PF state (e.g. due to
link flapping). Here, the first time transmission is sent over PF path
T2 as it's the only non-INACTIVE path, but the retransmitted data-chunks
are sent over the INACTIVE path T1 (T.PRI), which is not good.
After the patch, it's choosing better transports in both cases by
modifying step 4):
4) If none is ACTIVE, set T.ACT_new<-best(T.ACT_old, T3) where T3 is
the most recently used (if avail) in PF, set T.RET<-T.ACT_new
This will still select a best possible path in PF if available (which
can also include T.PRI/T.RET), and set both T.ACT/T.RET to it.
In case sctp_assoc_control_transport() *just* put T.ACT_old into INACTIVE
as it transitioned from ACTIVE->PF->INACTIVE and stays in INACTIVE just
for a very short while before going back ACTIVE, it will guarantee that
this path will be reselected for T.ACT/T.RET since T3 (PF) is not
available.
Previously, this was not possible, as we would only select between T.PRI
and T.RET, and a possible T3 would be NULL due to the fact that we have
just transitioned T3 in sctp_assoc_control_transport() from PF->INACTIVE
and would select a suboptimal path when T.PRI/T.RET have worse properties.
In the case that T.ACT_old permanently went to INACTIVE during this
transition and there's no PF path available, plus T.PRI and T.RET are
INACTIVE as well, we would now camp on T.ACT_old, but if everything is
being INACTIVE there's really not much we can do except hoping for a
successful HB to bring one of the transports back up again and, thus
cause a new selection through sctp_assoc_control_transport().
Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Acked-by: Vlad Yasevich <vyasevich@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann [Fri, 22 Aug 2014 11:03:29 +0000 (13:03 +0200)]
net: sctp: spare unnecessary comparison in sctp_trans_elect_best
When both transports are the same, we don't have to go down that
road only to realize that we will return the very same transport.
We are guaranteed that curr is always non-NULL. Therefore, just
short-circuit this special case.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Acked-by: Vlad Yasevich <vyasevich@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Anton Blanchard [Fri, 22 Aug 2014 01:36:52 +0000 (11:36 +1000)]
ibmveth: Fix endian issues with rx_no_buffer statistic
Hidden away in the last 8 bytes of the buffer_list page is a solitary
statistic. It needs to be byte swapped or else ethtool -S will
produce numbers that terrify the user.
Since we do this in multiple places, create a helper function with a
comment explaining what is going on.
Signed-off-by: Anton Blanchard <anton@samba.org> Cc: stable@vger.kernel.org Signed-off-by: David S. Miller <davem@davemloft.net>
net: xgene: fix possible NULL dereference in xgene_enet_free_desc_rings()
A NULL pointer dereference is possible for the argument ring->buf_pool
which is passed to xgene_enet_free_desc_ring(), as ring could be NULL.
And now since NULL pointers are being checked for before the calls to
xgene_enet_free_desc_ring(), might as well take advantage of them and
not call the function if the argument would be NULL.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Iyappan Subramanian <isubramanian@apm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Jiri Benc [Thu, 21 Aug 2014 19:33:44 +0000 (21:33 +0200)]
openvswitch: fix panic with multiple vlan headers
When there are multiple vlan headers present in a received frame, the first
one is put into vlan_tci and protocol is set to ETH_P_8021Q. Anything in the
skb beyond the VLAN TPID may be still non-linear, including the inner TCI
and ethertype. While ovs_flow_extract takes care of IP and IPv6 headers, it
does nothing with ETH_P_8021Q. Later, if OVS_ACTION_ATTR_POP_VLAN is
executed, __pop_vlan_tci pulls the next vlan header into vlan_tci.
This leads to two things:
1. Part of the resulting ethernet header is in the non-linear part of the
skb. When eth_type_trans is called later as the result of
OVS_ACTION_ATTR_OUTPUT, kernel BUGs in __skb_pull. Also, __pop_vlan_tci
is in fact accessing random data when it reads past the TPID.
2. network_header points into the ethernet header instead of behind it.
mac_len is set to a wrong value (10), too.
Reported-by: Yulong Pei <ypei@redhat.com> Signed-off-by: Jiri Benc <jbenc@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Benjamin Block [Thu, 21 Aug 2014 17:37:48 +0000 (19:37 +0200)]
net: ipv6: fib: don't sleep inside atomic lock
The function fib6_commit_metrics() allocates a piece of memory in mode
GFP_KERNEL while holding an atomic lock from higher up in the stack, in
the function __ip6_ins_rt(). This produces the following BUG:
Fixing this by replacing the mode GFP_KERNEL with GFP_ATOMIC.
Signed-off-by: Benjamin Block <bebl@mageta.org> Acked-by: David Rientjes <rientjes@google.com> Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Nimrod Andy [Thu, 21 Aug 2014 09:09:38 +0000 (17:09 +0800)]
net: fec: ptp: avoid register access when ipg clock is disabled
The current kernel hang on i.MX6SX with rootfs mount from MMC.
The root cause is that ptp uses a periodic timer to access enet register
even if ipg clock is disabled.
FEC ptp driver start one period timer to read 1588 counter register in the
ptp init function that is called after FEC driver is probed.
To save power, after FEC probe finish, FEC driver disable all clocks including
ipg clock that is needed for register access.
i.MX5x, i.MX6q/dl/sl FEC register access don't cause system hang when ipg clock
is disabled, just return zero value. But for i.MX6sx SOC, it cause system hang.
To avoid the issue, we need to check ptp clock status before ptp timer count access.
Signed-off-by: Fugang Duan <B38611@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Fri, 22 Aug 2014 16:08:20 +0000 (09:08 -0700)]
Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Will Deacon:
"This small set of fixes addresses a few issues introduced during the
merge window, including:
- fix typo in I-cache detection that was causing us to treat all
I-caches as aliasing
- hook up memfd_create and getrandom syscalls for native and compat
- revert a temporary hack for defconfig builds in -next (the audit
tree changes didn't make it in this merge window)
- a couple of UEFI fixes for TEXT_OFFSET fuzzing and /memreserve/
- a simple sparsemem fix for 48-bit physical addressing
- small defconfig updates to get autotesters working with X-gene"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
Revert "arm64: Do not invoke audit_syscall_* functions if !CONFIG_AUDIT_SYSCALL"
arm64: mm: update max pa bits to 48
arm64: ignore DT memreserve entries when booting in UEFI mode
arm64: configs: Enable X-Gene SATA and ethernet in defconfig
arm64: align randomized TEXT_OFFSET on 4 kB boundary
asm-generic: add memfd_create system call to unistd.h
arm64: compat: wire up memfd_create and getrandom syscalls for aarch32
arm64: fix typo in I-cache policy detection
Linus Torvalds [Fri, 22 Aug 2014 16:06:22 +0000 (09:06 -0700)]
Merge tag 'iommu-fixes-v3.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
Pull IOMMU fixes from Joerg Roedel:
"The fixes include:
- fix a crash in the VT-d driver when devices with a driver attached
are hot-unplugged
- fix a AMD IOMMU driver crash with device assignment of 32 bit PCI
devices to KVM guests
- fix for a copy&paste error in generic IOMMU code. Now the right
function pointer is checked before calling"
* tag 'iommu-fixes-v3.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
iommu/core: Check for the right function pointer in iommu_map()
iommu/amd: Fix cleanup_domain for mass device removal
iommu/vt-d: Defer domain removal if device is assigned to a driver
Description of problem:
The NIC card is not reporting back to the driver the transmitted skbs,
so they get stuck in the TX ring causing issues with reference
counters in other kernel components.
Developed a new Automatic Egress Queue Update firmware facility to slowly tick
through Egress Queues and send back any outstanding CIDX Updates which are
laying around.
Based on original work by Casey Leedom <leedom@chelsio.com>
Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 22 Aug 2014 04:53:15 +0000 (21:53 -0700)]
Merge tag 'linux-can-fixes-for-3.17-20140821' of git://gitorious.org/linux-can/linux-can
Marc Kleine-Budde says:
====================
pull-request: can 2014-08-21
The first patch is from Mirza Krak, it fixes the initialization of the hardware
in the sja1000 driver. The next patch is contributed by Dan Carpenter, it fixes
the error handling in the c_can's probe function. Then there are two patches
for the flexcan driver, one by Alexander Stein, which fixes the resetting of
the bus error interrupt mask, the other one by Sebastian Andrzej Siewior which
adds an additional error state transition message.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Anish Bhatt [Wed, 20 Aug 2014 20:44:06 +0000 (13:44 -0700)]
cxgb4: Fix race condition in cleanup
There is a possible race condition when we unregister the PCI Driver and then
flush/destroy the global "workq". This could lead to situations where there
are tasks on the Work Queue with references to now deleted adapter data
structures. Instead, have per-adapter Work Queues which were instantiated and
torn down in init_one() and remove_one(), respectively.
v2: Remove unnecessary call to flush_workqueue() before destroy_workqueue()
Signed-off-by: Anish Bhatt <anish@chelsio.com> Signed-off-by: Casey Leedom <leedom@chelsio.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
zhuyj [Wed, 20 Aug 2014 09:31:43 +0000 (17:31 +0800)]
sctp: not send SCTP_PEER_ADDR_CHANGE notifications with failed probe
Since the transport has always been in state SCTP_UNCONFIRMED, it
therefore wasn't active before and hasn't been used before, and it
always has been, so it is unnecessary to bug the user with a
notification.
Reported-by: Deepak Khandelwal <khandelwal.deepak.1987@gmail.com> Suggested-by: Vlad Yasevich <vyasevich@gmail.com> Suggested-by: Michael Tuexen <tuexen@fh-muenster.de> Suggested-by: Daniel Borkmann <dborkman@redhat.com> Signed-off-by: Zhu Yanjun <Yanjun.Zhu@windriver.com> Acked-by: Vlad Yasevich <vyasevich@gmail.com> Acked-by: Daniel Borkmann <dborkman@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Yuval Mintz [Mon, 18 Aug 2014 19:36:23 +0000 (22:36 +0300)]
bnx2x: Revert UNDI flushing mechanism
Commit 91ebb929b6f8 ("bnx2x: Add support for Multi-Function UNDI") [which was
later supposedly fixed by de682941eef3 ("bnx2x: Fix UNDI driver unload")]
introduced a bug in which in some [yet-to-be-determined] scenarios the
alternative flushing mechanism which was to guarantee the Rx buffers are
empty before resetting them during device probe will fail.
If this happens, when device will be loaded once more a fatal attention will
occur; Since this most likely happens in boot from SAN scenarios, the machine
will fail to load.
Notice this may occur not only in the 'Multi-Function' scenario but in the
regular scenario as well, i.e., this introduced a regression in the driver's
ability to perform boot from SAN.
The patch reverts the mechanism and applies the old scheme to multi-function
devices as well as to single-function devices.
Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com> Signed-off-by: Ariel Elior <Ariel.Elior@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
projects / mirror_ubuntu-eoan-kernel.git / log