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Alan Ott [Sat, 1 Sep 2012 05:57:06 +0000 (05:57 +0000)]
6lowpan: Make a copy of skb's delivered to 6lowpan
Since lowpan_process_data() modifies the skb (by calling skb_pull()), we
need our own copy so that it doesn't affect the data received by other
protcols (in this case, af_ieee802154).
Signed-off-by: Alan Ott <alan@signal11.us>
Signed-off-by: David S. Miller <davem@tempietto.lan>
David S. Miller [Sat, 1 Sep 2012 00:43:37 +0000 (20:43 -0400)]
Merge branch 'tcp_fastopen_server'
Jerry Chu says:
====================
This patch series provides the server (passive open) side code
for TCP Fast Open. Together with the earlier client side patches
it completes the TCP Fast Open implementation.
The server side Fast Open code accepts data carried in the SYN
packet with a valid Fast Open cookie, and passes it to the
application right away, allowing application to send back response
data, all before TCP's 3-way handshake finishes.
A simple cookie scheme together with capping the number of
outstanding TFO requests (still in TCP_SYN_RECV state) to a limit
per listener forms the main line of defense against spoofed SYN
attacks.
For more details about TCP Fast Open see our IETF internet draft
at http://www.ietf.org/id/draft-ietf-tcpm-fastopen-01.txt
and a research paper at
http://conferences.sigcomm.org/co-next/2011/papers/
1569470463.pdf
A prototype implementation was first developed by Sivasankar
Radhakrishnan (sivasankar@cs.ucsd.edu).
A patch based on an older version of Linux kernel has been
undergoing internal tests at Google for the past few months.
Jerry Chu (3):
tcp: TCP Fast Open Server - header & support functions
tcp: TCP Fast Open Server - support TFO listeners
tcp: TCP Fast Open Server - main code path
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Jerry Chu [Fri, 31 Aug 2012 12:29:13 +0000 (12:29 +0000)]
tcp: TCP Fast Open Server - main code path
This patch adds the main processing path to complete the TFO server
patches.
A TFO request (i.e., SYN+data packet with a TFO cookie option) first
gets processed in tcp_v4_conn_request(). If it passes the various TFO
checks by tcp_fastopen_check(), a child socket will be created right
away to be accepted by applications, rather than waiting for the 3WHS
to finish.
In additon to the use of TFO cookie, a simple max_qlen based scheme
is put in place to fend off spoofed TFO attack.
When a valid ACK comes back to tcp_rcv_state_process(), it will cause
the state of the child socket to switch from either TCP_SYN_RECV to
TCP_ESTABLISHED, or TCP_FIN_WAIT1 to TCP_FIN_WAIT2. At this time
retransmission will resume for any unack'ed (data, FIN,...) segments.
Signed-off-by: H.K. Jerry Chu <hkchu@google.com>
Cc: Yuchung Cheng <ycheng@google.com>
Cc: Neal Cardwell <ncardwell@google.com>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jerry Chu [Fri, 31 Aug 2012 12:29:12 +0000 (12:29 +0000)]
tcp: TCP Fast Open Server - support TFO listeners
This patch builds on top of the previous patch to add the support
for TFO listeners. This includes -
1. allocating, properly initializing, and managing the per listener
fastopen_queue structure when TFO is enabled
2. changes to the inet_csk_accept code to support TFO. E.g., the
request_sock can no longer be freed upon accept(), not until 3WHS
finishes
3. allowing a TCP_SYN_RECV socket to properly poll() and sendmsg()
if it's a TFO socket
4. properly closing a TFO listener, and a TFO socket before 3WHS
finishes
5. supporting TCP_FASTOPEN socket option
6. modifying tcp_check_req() to use to check a TFO socket as well
as request_sock
7. supporting TCP's TFO cookie option
8. adding a new SYN-ACK retransmit handler to use the timer directly
off the TFO socket rather than the listener socket. Note that TFO
server side will not retransmit anything other than SYN-ACK until
the 3WHS is completed.
The patch also contains an important function
"reqsk_fastopen_remove()" to manage the somewhat complex relation
between a listener, its request_sock, and the corresponding child
socket. See the comment above the function for the detail.
Signed-off-by: H.K. Jerry Chu <hkchu@google.com>
Cc: Yuchung Cheng <ycheng@google.com>
Cc: Neal Cardwell <ncardwell@google.com>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jerry Chu [Fri, 31 Aug 2012 12:29:11 +0000 (12:29 +0000)]
tcp: TCP Fast Open Server - header & support functions
This patch adds all the necessary data structure and support
functions to implement TFO server side. It also documents a number
of flags for the sysctl_tcp_fastopen knob, and adds a few Linux
extension MIBs.
In addition, it includes the following:
1. a new TCP_FASTOPEN socket option an application must call to
supply a max backlog allowed in order to enable TFO on its listener.
2. A number of key data structures:
"fastopen_rsk" in tcp_sock - for a big socket to access its
request_sock for retransmission and ack processing purpose. It is
non-NULL iff 3WHS not completed.
"fastopenq" in request_sock_queue - points to a per Fast Open
listener data structure "fastopen_queue" to keep track of qlen (# of
outstanding Fast Open requests) and max_qlen, among other things.
"listener" in tcp_request_sock - to point to the original listener
for book-keeping purpose, i.e., to maintain qlen against max_qlen
as part of defense against IP spoofing attack.
3. various data structure and functions, many in tcp_fastopen.c, to
support server side Fast Open cookie operations, including
/proc/sys/net/ipv4/tcp_fastopen_key to allow manual rekeying.
Signed-off-by: H.K. Jerry Chu <hkchu@google.com>
Cc: Yuchung Cheng <ycheng@google.com>
Cc: Neal Cardwell <ncardwell@google.com>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Francois Romieu [Fri, 31 Aug 2012 21:06:17 +0000 (23:06 +0200)]
r8169: add D-Link DGE-560T identifiers.
This one includes a 8168. Not to be confused with the sky2 driven
one whose PCI vendor and device ID are the same.
Reported-by: Neyuki Inaya <in@joblog.ru>
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jiri Bohac [Thu, 30 Aug 2012 12:02:47 +0000 (12:02 +0000)]
bonding: add some slack to arp monitoring time limits
Currently, all the time limits in the bonding ARP monitor are in
multiples of arp_interval -- the time interval at which the ARP
monitor is periodically scheduled.
With a fast network round-trip and a little scheduling latency
of the ARP monitor work, a limit of n*delta_in_ticks may
effectively mean (n-1)*delta_in_ticks.
This is fatal in case of n==1 (the link will stay down
forever) and makes the behaviour non-deterministic in all the
other cases.
Add a delta_in_ticks/2 time slack to all the time limits.
Signed-off-by: Jiri Bohac <jbohac@suse.cz>
Signed-off-by: David S. Miller <davem@davemloft.net>
Sorin Dumitru [Thu, 30 Aug 2012 02:01:45 +0000 (02:01 +0000)]
ipv6: remove some deadcode
__ipv6_regen_rndid no longer returns anything other than 0
so there's no point in verifying what it returns
Signed-off-by: Sorin Dumitru <sdumitru@ixiacom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Rami Rosen [Mon, 27 Aug 2012 23:39:24 +0000 (23:39 +0000)]
net: fix documentation of skb_needs_linearize().
skb_needs_linearize() does not check highmem DMA as it does not call
illegal_highdma() anymore, so there is no need to mention highmem DMA here.
(Indeed, ~NETIF_F_SG flag, which is checked in skb_needs_linearize(), can
be set when illegal_highdma() returns true, and we are assured that
illegal_highdma() is invoked prior to skb_needs_linearize() as
skb_needs_linearize() is a static method called only once.
But ~NETIF_F_SG can be set not only there in this same invocation path.
It can also be set when can_checksum_protocol() returns false).
see commit
02932ce9e2c136e6fab2571c8e0dd69ae8ec9853,
Convert skb_need_linearize() to use precomputed features.
Signed-off-by: Rami Rosen <rosenr@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Alexander Duyck [Mon, 27 Aug 2012 06:30:01 +0000 (06:30 +0000)]
ipv4: Minor logic clean-up in ipv4_mtu
In ipv4_mtu there is some logic where we are testing for a non-zero value
and a timer expiration, then setting the value to zero, and then testing if
the value is zero we set it to a value based on the dst. Instead of
bothering with the extra steps it is easier to just cleanup the logic so
that we set it to the dst based value if it is zero or if the timer has
expired.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Wanlong Gao [Sun, 26 Aug 2012 21:23:13 +0000 (21:23 +0000)]
net:atm:fix up ENOIOCTLCMD error handling
At commit
07d106d0, Linus pointed out that ENOIOCTLCMD should be
translated as ENOTTY to user mode.
Cc: "David S. Miller" <davem@davemloft.net>
Cc: netdev@vger.kernel.org
Signed-off-by: Wanlong Gao <gaowanlong@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Srinivas Kandagatla [Thu, 30 Aug 2012 05:51:09 +0000 (05:51 +0000)]
net:stmmac: convert driver to use devm_request_and_ioremap.
This patch moves calls to ioremap and request_mem_region to
devm_request_and_ioremap call.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Srinivas Kandagatla [Thu, 30 Aug 2012 05:50:43 +0000 (05:50 +0000)]
net:stmmac: Remove bus_id from mdio platform data.
This patch removes bus_id from mdio platform data, The reason to remove
bus_id is, stmmac mdio bus_id is always same as stmmac bus-id, so there
is no point in passing this in different variable.
Also stmmac ethernet driver connects to phy with bus_id passed its
platform data.
So, having single bus-id is much simpler.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Srinivas Kandagatla [Thu, 30 Aug 2012 05:50:19 +0000 (05:50 +0000)]
net:stmmac: fix broken stmmac_pltfr_remove.
This patch fixes stmmac_pltfr_remove function, which is broken because,
it is accessing plat variable via freed memory priv pointer which gets
freed by free_netdev called from stmmac_dvr_remove.
In short this patch caches the plat pointer in local variable before
calling stmmac_dvr_remove to prevent code accessing freed memory.
Without this patch any attempt to remove the stmmac device will fail as
below:
Unregistering eth 0 ...
Unable to handle kernel paging request at virtual address
6b6b6bab
pgd =
de5dc000
[
6b6b6bab] *pgd=
00000000
Internal error: Oops: 5 [#1] PREEMPT SMP
Modules linked in: cdev(O+)
CPU: 0 Tainted: G O (3.3.1_stm24_0210-b2000+ #25)
PC is at stmmac_pltfr_remove+0x2c/0xa0
LR is at stmmac_pltfr_remove+0x28/0xa0
pc : [<
c01b8908>] lr : [<
c01b8904>] psr:
60000013
sp :
def6be78 ip :
de6c5a00 fp :
00000000
r10:
00000028 r9 :
c082d81d r8 :
00000001
r7 :
de65a600 r6 :
df81b240 r5 :
c0413fd8 r4 :
00000000
r3 :
6b6b6b6b r2 :
def6be6c r1 :
c0355e2b r0 :
00000020
Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user
Control:
10c53c7d Table:
5e5dc04a DAC:
00000015
Process insmod (pid: 738, stack limit = 0xdef6a2f0)
Stack: (0xdef6be78 to 0xdef6c000)
be60:
c0413fe0
c0403658
be80:
c0400bb0 c019270c c01926f8 c0191478 00000000 c0414014 c0413fe0
c01914d8
bea0:
00000000 c0413fe0 df8045d0 c019109c c0413fe0 c0400bf0 c0413fd8
c018f04c
bec0:
00000000 bf000000 c0413fd8 c01929a0 c0413fd8 bf000000 00000000
c0192bfc
bee0:
bf00009c bf000014 def6a000 c000859c 00000000 00000001 bf00009c
bf00009c
bf00:
00000001 bf00009c 00000001 bf0000e4 de65a600 00000001 c082d81d
c0058cd0
bf20:
bf0000a8 c004fbd8 c0056414 c082d815 c02aea20 bf0001f0 00b0b008
e0846208
bf40:
c03ec8a0 e0846000 0000db0d e0850604 e08504de e0853a24 00000204
000002d4
bf60:
00000000 00000000 0000001c 0000001d 00000009 00000000 00000006
00000000
bf80:
00000003 f63d4e2e 0000db0d bef02ed8 00000080 c000d2e8 def6a000
00000000
bfa0:
00000000 c000d140 f63d4e2e 0000db0d 00b0b018 0000db0d 00b0b008
b6f4f298
bfc0:
f63d4e2e 0000db0d bef02ed8 00000080 00000003 00000000 00010000
00000000
bfe0:
00b0b008 bef02c64 00008d20 b6ef3784 60000010 00b0b018 5a5a5a5a
5a5a5a5a
[<
c01b8908>] (stmmac_pltfr_remove+0x2c/0xa0) from [<
c019270c>]
(platform_drv_remove+0x14/0x18)
[<
c019270c>] (platform_drv_remove+0x14/0x18) from [<
c0191478>]
(__device_release_driver+0x64/0xa4)
[<
c0191478>] (__device_release_driver+0x64/0xa4) from [<
c01914d8>]
(device_release_driver+0x20/0x2c)
[<
c01914d8>] (device_release_driver+0x20/0x2c) from [<
c019109c>]
(bus_remove_device+0xcc/0xdc)
[<
c019109c>] (bus_remove_device+0xcc/0xdc) from [<
c018f04c>]
(device_del+0x104/0x160)
[<
c018f04c>] (device_del+0x104/0x160) from [<
c01929a0>]
(platform_device_del+0x18/0x58)
[<
c01929a0>] (platform_device_del+0x18/0x58) from [<
c0192bfc>]
(platform_device_unregister+0xc/0x18)
[<
c0192bfc>] (platform_device_unregister+0xc/0x18) from [<
bf000014>]
(r_init+0x14/0x2c [cdev])
[<
bf000014>] (r_init+0x14/0x2c [cdev]) from [<
c000859c>]
(do_one_initcall+0x90/0x160)
[<
c000859c>] (do_one_initcall+0x90/0x160) from [<
c0058cd0>]
(sys_init_module+0x15c4/0x1794)
[<
c0058cd0>] (sys_init_module+0x15c4/0x1794) from [<
c000d140>]
(ret_fast_syscall+0x0/0x30)
Code:
e1a04000 e59f0070 eb039b65 e59636e4 (
e5933040)
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Srinivas Kandagatla [Thu, 30 Aug 2012 05:49:58 +0000 (05:49 +0000)]
net:stmmac: Add check if mdiobus is registered in stmmac_mdio_unregister
This patch adds a basic check in stmmac_mdio_unregister to see if mdio
bus registeration for this driver was actually sucessfull or not.
Use case here is, if BSP considers using mdio-gpio bus along with stmmac
driver by passing mdio_bus_data as NULL in platform data.
Call to stmmac_mdio_register with mdio_bus_data as NULL returns 0, which
is a considered sucessfull call form stmmac. Then again when we unload
the driver we just call stmmac_mdio_unregister, this is were the actual
problem is stmmac-mdio code dont really know at this instance of calling
that stmmac_mdio_register was actually successful.
So Adding a check in stmmac_mdio_unregister is always safe.
Without this patch stmmac driver calls stmmac_mdio_register from
stmmac_release which Segfaults as mii bus was never registered at the
first point.
Originally the this bug was found when unloading an stmmac driver
instance which uses mdio-gpio for smi access.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 31 Aug 2012 20:03:33 +0000 (16:03 -0400)]
Merge branch 'master' of git://git./linux/kernel/git/jkirsher/net-next
Wei Yongjun [Sun, 26 Aug 2012 18:20:45 +0000 (18:20 +0000)]
openvswitch: using kfree_rcu() to simplify the code
The callback function of call_rcu() just calls a kfree(), so we
can use kfree_rcu() instead of call_rcu() + callback function.
spatch with a semantic match is used to found this problem.
(http://coccinelle.lip6.fr/)
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Acked-by: Jesse Gross <jesse@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Xi Wang [Sun, 26 Aug 2012 16:47:13 +0000 (16:47 +0000)]
af_unix: fix shutdown parameter checking
Return -EINVAL rather than 0 given an invalid "mode" parameter.
Signed-off-by: Xi Wang <xi.wang@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Xi Wang [Sun, 26 Aug 2012 16:37:07 +0000 (16:37 +0000)]
decnet: fix shutdown parameter checking
The allowed value of "how" is SHUT_RD/SHUT_WR/SHUT_RDWR (0/1/2),
rather than SHUTDOWN_MASK (3).
Signed-off-by: Xi Wang <xi.wang@gmail.com>
Acked-by: Steven Whitehouse <swhiteho@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Alex Bergmann [Fri, 31 Aug 2012 02:48:31 +0000 (02:48 +0000)]
tcp: Increase timeout for SYN segments
Commit
9ad7c049 ("tcp: RFC2988bis + taking RTT sample from 3WHS for
the passive open side") changed the initRTO from 3secs to 1sec in
accordance to RFC6298 (former RFC2988bis). This reduced the time till
the last SYN retransmission packet gets sent from 93secs to 31secs.
RFC1122 is stating that the retransmission should be done for at least 3
minutes, but this seems to be quite high.
"However, the values of R1 and R2 may be different for SYN
and data segments. In particular, R2 for a SYN segment MUST
be set large enough to provide retransmission of the segment
for at least 3 minutes. The application can close the
connection (i.e., give up on the open attempt) sooner, of
course."
This patch increases the value of TCP_SYN_RETRIES to the value of 6,
providing a retransmission window of 63secs.
The comments for SYN and SYNACK retries have also been updated to
describe the current settings. The same goes for the documentation file
"Documentation/networking/ip-sysctl.txt".
Signed-off-by: Alexander Bergmann <alex@linlab.net>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 31 Aug 2012 19:14:10 +0000 (15:14 -0400)]
Merge git://git./linux/kernel/git/davem/net
Merge the 'net' tree to get the recent set of netfilter bug fixes in
order to assist with some merge hassles Pablo is going to have to deal
with for upcoming changes.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 31 Aug 2012 17:06:37 +0000 (13:06 -0400)]
Merge branch 'master' of git://1984.lsi.us.es/nf
Pablo Neira Ayuso [Wed, 29 Aug 2012 16:25:49 +0000 (16:25 +0000)]
netfilter: nf_conntrack: fix racy timer handling with reliable events
Existing code assumes that del_timer returns true for alive conntrack
entries. However, this is not true if reliable events are enabled.
In that case, del_timer may return true for entries that were
just inserted in the dying list. Note that packets / ctnetlink may
hold references to conntrack entries that were just inserted to such
list.
This patch fixes the issue by adding an independent timer for
event delivery. This increases the size of the ecache extension.
Still we can revisit this later and use variable size extensions
to allocate this area on demand.
Tested-by: Oliver Smith <olipro@8.c.9.b.0.7.4.0.1.0.0.2.ip6.arpa>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Alexander Duyck [Fri, 20 Jul 2012 08:09:48 +0000 (08:09 +0000)]
ixgbevf: Cleanup handling of configuration for jumbo frames
This change moves the code for notifying the PF of the VF maximum packet
size into the vf.c file. The main motivation behind this is that the vf.c
file is supposed to contain all of the messages used when communicating
with the PF.
In addition it creates a separate function for setting the Rx buffer size
so that we have on centralized area to review what buffer sizes will be
requested by the VF.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Alexander Duyck [Fri, 11 May 2012 08:33:26 +0000 (08:33 +0000)]
ixgbevf: Add suspend and resume support to the VF
This change adds PCI suspend and resume support to ixgbevf.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Greg Rose <gregory.v.rose@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Bruce Allan [Fri, 17 Aug 2012 06:18:23 +0000 (06:18 +0000)]
e1000e: update driver version number
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Bruce Allan [Fri, 17 Aug 2012 06:18:13 +0000 (06:18 +0000)]
e1000e: cleanup - remove unnecessary variable
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Bruce Allan [Fri, 17 Aug 2012 06:18:02 +0000 (06:18 +0000)]
e1000e: cleanup - remove inapplicable comment
Early Receive has been disabled in the driver so this comment is no longer
applicable.
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Bruce Allan [Fri, 17 Aug 2012 06:17:57 +0000 (06:17 +0000)]
e1000e: cleanup strict checkpatch check
CHECK: multiple assignments should be avoided
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Bruce Allan [Fri, 17 Aug 2012 06:18:07 +0000 (06:18 +0000)]
e1000e: cleanup strict checkpatch MEMORY_BARRIER checks
Add comments to memory barriers per strict checkpatch.
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Bruce Allan [Fri, 17 Aug 2012 06:17:51 +0000 (06:17 +0000)]
e1000e: use correct type for read of 32-bit register
The POEMB register is 32 bits, not 16.
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Merav Sicron [Mon, 27 Aug 2012 03:26:20 +0000 (03:26 +0000)]
bnx2x: Correct the ndo_poll_controller call
This patch correct poll_bnx2x (ndo_poll_controller call) which was not
functioning well with MSI-X.
Signed-off-by: Merav Sicron <meravs@broadcom.com>
Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Merav Sicron [Mon, 27 Aug 2012 03:26:19 +0000 (03:26 +0000)]
bnx2x: Move netif_napi_add to the open call
Move netif_napi_add for all queues from the probe call to the open call, to
avoid the case that napi objects are added for queues that may eventually not
be initialized and activated. With the former behavior, the driver could crash
when netpoll was calling ndo_poll_controller.
Signed-off-by: Merav Sicron <meravs@broadcom.com>
Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Tue, 28 Aug 2012 12:33:07 +0000 (12:33 +0000)]
ipv4: must use rcu protection while calling fib_lookup
Following lockdep splat was reported by Pavel Roskin :
[ 1570.586223] ===============================
[ 1570.586225] [ INFO: suspicious RCU usage. ]
[ 1570.586228] 3.6.0-rc3-wl-main #98 Not tainted
[ 1570.586229] -------------------------------
[ 1570.586231] /home/proski/src/linux/net/ipv4/route.c:645 suspicious rcu_dereference_check() usage!
[ 1570.586233]
[ 1570.586233] other info that might help us debug this:
[ 1570.586233]
[ 1570.586236]
[ 1570.586236] rcu_scheduler_active = 1, debug_locks = 0
[ 1570.586238] 2 locks held by Chrome_IOThread/4467:
[ 1570.586240] #0: (slock-AF_INET){+.-...}, at: [<
ffffffff814f2c0c>] release_sock+0x2c/0xa0
[ 1570.586253] #1: (fnhe_lock){+.-...}, at: [<
ffffffff815302fc>] update_or_create_fnhe+0x2c/0x270
[ 1570.586260]
[ 1570.586260] stack backtrace:
[ 1570.586263] Pid: 4467, comm: Chrome_IOThread Not tainted 3.6.0-rc3-wl-main #98
[ 1570.586265] Call Trace:
[ 1570.586271] [<
ffffffff810976ed>] lockdep_rcu_suspicious+0xfd/0x130
[ 1570.586275] [<
ffffffff8153042c>] update_or_create_fnhe+0x15c/0x270
[ 1570.586278] [<
ffffffff815305b3>] __ip_rt_update_pmtu+0x73/0xb0
[ 1570.586282] [<
ffffffff81530619>] ip_rt_update_pmtu+0x29/0x90
[ 1570.586285] [<
ffffffff815411dc>] inet_csk_update_pmtu+0x2c/0x80
[ 1570.586290] [<
ffffffff81558d1e>] tcp_v4_mtu_reduced+0x2e/0xc0
[ 1570.586293] [<
ffffffff81553bc4>] tcp_release_cb+0xa4/0xb0
[ 1570.586296] [<
ffffffff814f2c35>] release_sock+0x55/0xa0
[ 1570.586300] [<
ffffffff815442ef>] tcp_sendmsg+0x4af/0xf50
[ 1570.586305] [<
ffffffff8156fc60>] inet_sendmsg+0x120/0x230
[ 1570.586308] [<
ffffffff8156fb40>] ? inet_sk_rebuild_header+0x40/0x40
[ 1570.586312] [<
ffffffff814f4bdd>] ? sock_update_classid+0xbd/0x3b0
[ 1570.586315] [<
ffffffff814f4c50>] ? sock_update_classid+0x130/0x3b0
[ 1570.586320] [<
ffffffff814ec435>] do_sock_write+0xc5/0xe0
[ 1570.586323] [<
ffffffff814ec4a3>] sock_aio_write+0x53/0x80
[ 1570.586328] [<
ffffffff8114bc83>] do_sync_write+0xa3/0xe0
[ 1570.586332] [<
ffffffff8114c5a5>] vfs_write+0x165/0x180
[ 1570.586335] [<
ffffffff8114c805>] sys_write+0x45/0x90
[ 1570.586340] [<
ffffffff815d2722>] system_call_fastpath+0x16/0x1b
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Timur Tabi [Wed, 29 Aug 2012 08:08:03 +0000 (08:08 +0000)]
net/fsl_pq_mdio: add support for the Fman 1G MDIO controller
The MDIO controller on the Frame Manager (Fman) is compatible with the
QE and Gianfar MDIO controllers, but we don't care about the TBI because
the Ethernet drivers (FMD) take care of programming it.
Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Timur Tabi [Wed, 29 Aug 2012 08:08:02 +0000 (08:08 +0000)]
net/fsl-pq-mdio: coalesce multiple memory allocations into one
Take advantage of the new mdiobus_alloc_size() function to combine three
different memory allocations into one. This also simplies the error
handling.
Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Timur Tabi [Wed, 29 Aug 2012 08:08:01 +0000 (08:08 +0000)]
net/fsl_pq_mdio: streamline probing of MDIO nodes
Make the device tree probe function more data-driven, so that it no longer
searches the 'compatible' property more than once. The of_device_id[] array
allows for per-entry private data, so we use that to store details about each
type of node that the driver supports. This removes the need to check the
'compatible' property inside the probe function.
The driver supports four types on MDIO devices:
1) Gianfar MDIO nodes that only map the MII registers
2) Gianfar MDIO nodes that map the full MDIO register set
3) eTSEC2 MDIO nodes (which map the full MDIO register set)
4) QE MDIO nodes (which map only the MII registers)
Gianfar, eTSEC2, and QE have different mappings for the TBIPA register, which
is needed to initialize the TBI PHY. In addition, the QE needs a special
hack because of the way the device tree is ordered.
All of this information is encapsulated in the fsl_pq_mdio_data structure,
so when an MDIO node is probed, per-device data and functions are used
to determine how to initialize the device.
Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Timur Tabi [Wed, 29 Aug 2012 08:08:00 +0000 (08:08 +0000)]
net/fsl_pq_mdio: various small fixes
1) Replace printk with dev_err
2) Fix some whitespace mistakes
3) Rename "ofdev" to "pdev", since it's a platform_device now
4) Fix an inadvertent compound statement by replacing commas with semicolons
Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Timur Tabi [Wed, 29 Aug 2012 08:07:59 +0000 (08:07 +0000)]
net/fsl_pq_mdio: merge some functions together
A few small functions were called only by other functions in the same
file, so merge them together. One function, for example, was calculating
the device address even though the caller was doing the same thing.
Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Timur Tabi [Wed, 29 Aug 2012 08:07:58 +0000 (08:07 +0000)]
net/fsl_pq_mdio: trim #include statements
Remove several unnecessary #include statements.
Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Timur Tabi [Wed, 29 Aug 2012 08:07:57 +0000 (08:07 +0000)]
net/freescale: do not export any functions from fsl_pq_mdio.c
None of the functions in fsl_pq_mdio.c are used by any other source file,
so there's no point in exporting them. Merge the header file into the
source file, make all the functions static, remove any EXPORT_SYMBOL
statements, and delete any #include "fsl_pq_mdio.h" statements.
Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Vasundhara Volam [Tue, 28 Aug 2012 20:37:44 +0000 (20:37 +0000)]
be2net: modify log msg for lack of privilege error
Signed-off-by: Vasundhara Volam <vasundhara.volam@emulex.com>
Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Sathya Perla [Tue, 28 Aug 2012 20:37:43 +0000 (20:37 +0000)]
be2net: fixup malloc/free of adapter->pmac_id
Free was missing and kcalloc() is better placed in be_ctrl_init()
Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Vasundhara Volam [Tue, 28 Aug 2012 20:37:42 +0000 (20:37 +0000)]
be2net: fix FW default for VF tx-rate
BE3 FW initializes VF tx-rate to 100Mbps. Fix this to 10Gbps.
Signed-off-by: Vasundhara Volam <vasundhara.volam@emulex.com>
Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Vasundhara Volam [Tue, 28 Aug 2012 20:37:41 +0000 (20:37 +0000)]
be2net: fix max VFs reported by HW
BE3 FW allocates VF resources for upto 30 VFs per PF while a max value of 32
may be reported via PCI config space. Fix this in the driver.
Signed-off-by: Vasundhara Volam <vasundhara.volam@emulex.com>
Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Sathya Perla [Tue, 28 Aug 2012 20:37:40 +0000 (20:37 +0000)]
be2net: create RSS rings even in multi-channel configs
Changes from commit df505e were incorrectly over-written by commit
10ef9ab.
Fixing the same.
Change log of the original fix:
Currently RSS rings are not created in a multi-channel config.
RSS rings can be created on one (out of four) interfaces per port in a
multi-channel config. Doing this insulates the driver from a FW bug wherin
multi-channel config is wrongly reported even when not enabled. This also
helps performance in a multi-channel config, as one interface per port gets
RSS rings.
Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
alex.bluesman.smirnov@gmail.com [Sun, 26 Aug 2012 05:10:11 +0000 (05:10 +0000)]
drivers/ieee802154: move ieee802154 drivers to net folder
The IEEE 802.15.4 standard represents a networking protocol. I don't
exactly know why drivers for this protocol are stored into the root
'driver' folder, but better will be to store them with other
networking stuff. Currently there are only 3 drivers available for
IEEE 802.15.4 stack, so lets do it now with the smallest overhead.
Signed-off-by: Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
alex.bluesman.smirnov@gmail.com [Sun, 26 Aug 2012 05:10:10 +0000 (05:10 +0000)]
drivers/ieee802154/at86rf230: replace the code under _init and _exit by macro
The code under _init and _exit functions is similar to the code of
module_spi_driver macro, which is a wrapper to the module_driver macro,
so use it instead.
Signed-off-by: Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
Cc: Devendra Naga <develkernel412222@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Yuval Mintz [Sun, 26 Aug 2012 00:35:45 +0000 (00:35 +0000)]
bnx2x: fix 57840_MF pci id
Commit
c3def943c7117d42caaed3478731ea7c3c87190e have added support for
new pci ids of the 57840 board, while failing to change the obsolete value
in 'pci_ids.h'.
This patch does so, allowing the probe of such devices.
Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Julian Anastasov [Sat, 25 Aug 2012 22:47:57 +0000 (22:47 +0000)]
netlink: add minlen validation for the new signed types
Signed-off-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: David S. Miller <davem@davemloft.net>
Julia Lawall [Sat, 25 Aug 2012 22:18:35 +0000 (22:18 +0000)]
drivers/net/ethernet/tundra/tsi108_eth.c: delete double assignment
Delete successive assignments to the same location.
A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
@@
expression i;
@@
*i = ...;
i = ...;
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
david decotigny [Fri, 24 Aug 2012 17:22:53 +0000 (17:22 +0000)]
forcedeth: prevent TX timeouts after reboot
This complements patch "net-forcedeth: fix TX timeout caused by TX
pause on down link" which ensures that a lock-up sequence is not sent
to the NIC. Present patch ensures that if a NIC is already locked-up,
the driver will recover from it when initializing the device.
It does the equivalent of the following recovery sequence:
- write NVREG_TX_PAUSEFRAME_ENABLE_V1 to eth1's register
NvRegTxPauseFrame
- write NVREG_XMITCTL_START to eth1's register
NvRegTransmitterControl
- write 0 to eth1's register NvRegTransmitterControl
(this is at the heart of the "unbricking" sequence mentioned in patch
"net-forcedeth: fix TX timeout caused by TX pause on down link")
Tested:
- hardware is MCP55 device id 10de:0373 (rev a3), dual-port
- reboot a kernel without any of patches mentioned
- freeze the NIC (details on description for commit "net-forcedeth:
fix TX timeout caused by TX pause on down link")
- wait 5mn until ping hangs & TX timeout in dmesg
- reboot on kernel with present patch
- host is immediatly operational, no TX timeout
Signed-off-by: David Decotigny <decot@googlers.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
david decotigny [Fri, 24 Aug 2012 17:22:52 +0000 (17:22 +0000)]
forcedeth: fix TX timeout caused by TX pause on down link
On some dual-port forcedeth devices such as MCP55 10de:0373 (rev a3),
when autoneg & TX pause are enabled while port is connected but
interface is down, the NIC will eventually freeze (TX timeouts,
network unreachable).
This patch ensures that TX pause is not configured in hardware when
interface is down. The TX pause request will be honored when interface
is later configured.
Tested:
- hardware is MCP55 device id 10de:0373 (rev a3), dual-port
- eth0 connected and UP, eth1 connected but DOWN
- without this patch, following sequence would brick NIC:
ifconfig eth0 down
ifconfig eth1 up
ifconfig eth1 down
ethtool -A eth1 autoneg off rx on tx off
ifconfig eth1 up
ifconfig eth1 down
ethtool -A eth1 autoneg on rx on tx on
ifconfig eth1 up
ifconfig eth1 down
ifup eth0
sleep 120 # or longer
ethtool eth1
Just in case, sequence to un-brick:
ifconfig eth0 down
ethtool -A eth1 autoneg off rx on tx off
ifconfig eth1 up
ifconfig eth1 down
ifup eth0
- with this patch: no TX timeout after "bricking" sequence above
Details:
- The following register accesses have been identified as the ones
causing the NIC to freeze in "bricking" sequence above:
- write NVREG_TX_PAUSEFRAME_ENABLE_V1 to eth1's register NvRegTxPauseFrame
- write NVREG_MISC1_PAUSE_TX | NVREG_MISC1_FORCE to eth1's register NvRegMisc1
- write 0 to eth1's register NvRegTransmitterControl
This is what this patch avoids.
Signed-off-by: David Decotigny <decot@googlers.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
david decotigny [Fri, 24 Aug 2012 17:22:51 +0000 (17:22 +0000)]
forcedeth: fix buffer overflow
Found by manual code inspection.
Tested: compile, reboot, ethtool -d ethX
Signed-off-by: David Decotigny <decot@googlers.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Timur Tabi [Fri, 24 Aug 2012 09:10:53 +0000 (09:10 +0000)]
netdev/phy: add MDIO bus multiplexer driven by a memory-mapped device
Add support for an MDIO bus multiplexer controlled by a simple memory-mapped
device, like an FPGA. The device must be memory-mapped and contain only
8-bit registers (which keeps things simple).
Tested on a Freescale P5020DS board which uses the "PIXIS" FPGA attached
to the localbus.
Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Francesco Ruggeri [Fri, 24 Aug 2012 07:38:35 +0000 (07:38 +0000)]
net: ipv4: ipmr_expire_timer causes crash when removing net namespace
When tearing down a net namespace, ipv4 mr_table structures are freed
without first deactivating their timers. This can result in a crash in
run_timer_softirq.
This patch mimics the corresponding behaviour in ipv6.
Locking and synchronization seem to be adequate.
We are about to kfree mrt, so existing code should already make sure that
no other references to mrt are pending or can be created by incoming traffic.
The functions invoked here do not cause new references to mrt or other
race conditions to be created.
Invoking del_timer_sync guarantees that ipmr_expire_timer is inactive.
Both ipmr_expire_process (whose completion we may have to wait in
del_timer_sync) and mroute_clean_tables internally use mfc_unres_lock
or other synchronizations when needed, and they both only modify mrt.
Tested in Linux 3.4.8.
Signed-off-by: Francesco Ruggeri <fruggeri@aristanetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Bruce Allan [Fri, 24 Aug 2012 20:38:11 +0000 (20:38 +0000)]
e1000e: DoS while TSO enabled caused by link partner with small MSS
With a low enough MSS on the link partner and TSO enabled locally, the
networking stack can periodically send a very large (e.g. 64KB) TCP
message for which the driver will attempt to use more Tx descriptors than
are available by default in the Tx ring. This is due to a workaround in
the code that imposes a limit of only 4 MSS-sized segments per descriptor
which appears to be a carry-over from the older e1000 driver and may be
applicable only to some older PCI or PCIx parts which are not supported in
e1000e. When the driver gets a message that is too large to fit across the
configured number of Tx descriptors, it stops the upper stack from queueing
any more and gets stuck in this state. After a timeout, the upper stack
assumes the adapter is hung and calls the driver to reset it.
Remove the unnecessary limitation of using up to only 4 MSS-sized segments
per Tx descriptor, and put in a hard failure test to catch when attempting
to check for message sizes larger than would fit in the whole Tx ring.
Refactor the remaining logic that limits the size of data per Tx descriptor
from a seemingly arbitrary 8KB to a limit based on the dynamic size of the
Tx packet buffer as described in the hardware specification.
Also, fix the logic in the check for space in the Tx ring for the next
largest possible packet after the current one has been successfully queued
for transmit, and use the appropriate defines for default ring sizes in
e1000_probe instead of magic values.
This issue goes back to the introduction of e1000e in 2.6.24 when it was
split off from e1000.
Reported-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Cc: Stable <stable@vger.kernel.org> [2.6.24+]
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Srinivas Kandagatla [Fri, 24 Aug 2012 01:59:17 +0000 (01:59 +0000)]
of/mdio-gpio: Simplify the way device tree support is implemented.
This patch cleans up the way device tree support is added in mdio-gpio
driver. I found lot of code duplication which is not necessary.
Also strangely a new platform driver was also introduced for device tree
support. All this forced me to do this cleanup patch.
After this patch, the driver probe checks the of_node pointer to get the
data from device tree.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Srinivas Kandagatla [Fri, 24 Aug 2012 01:58:59 +0000 (01:58 +0000)]
of/mdio: Add dummy functions in of_mdio.h.
This patch adds dummy functions in of_mdio.h, so that driver need not
ifdef there code with CONFIG_OF.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Fri, 24 Aug 2012 01:47:26 +0000 (01:47 +0000)]
netpoll: provide an IP ident in UDP frames
Let's fill IP header ident field with a meaningful value,
it might help some setups.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
xeb@mail.ru [Fri, 24 Aug 2012 01:07:38 +0000 (01:07 +0000)]
l2tp: avoid to use synchronize_rcu in tunnel free function
Avoid to use synchronize_rcu in l2tp_tunnel_free because context may be
atomic.
Signed-off-by: Dmitry Kozlov <xeb@mail.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>
Claudiu Manoil [Thu, 23 Aug 2012 21:46:25 +0000 (21:46 +0000)]
gianfar: fix default tx vlan offload feature flag
Commit -
"
b852b72 gianfar: fix bug caused by
87c288c6e9aa31720b72e2bc2d665e24e1653c3e"
disables by default (on mac init) the hw vlan tag insertion.
The "features" flags were not updated to reflect this, and
"ethtool -K" shows tx-vlan-offload to be "on" by default.
Cc: Sebastian Poehn <sebastian.poehn@belden.com>
Signed-off-by: Claudiu Manoil <claudiu.manoil@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pablo Neira Ayuso [Wed, 29 Aug 2012 15:24:09 +0000 (15:24 +0000)]
netfilter: nf_nat_sip: fix incorrect handling of EBUSY for RTCP expectation
We're hitting bug while trying to reinsert an already existing
expectation:
kernel BUG at kernel/timer.c:895!
invalid opcode: 0000 [#1] SMP
[...]
Call Trace:
<IRQ>
[<
ffffffffa0069563>] nf_ct_expect_related_report+0x4a0/0x57a [nf_conntrack]
[<
ffffffff812d423a>] ? in4_pton+0x72/0x131
[<
ffffffffa00ca69e>] ip_nat_sdp_media+0xeb/0x185 [nf_nat_sip]
[<
ffffffffa00b5b9b>] set_expected_rtp_rtcp+0x32d/0x39b [nf_conntrack_sip]
[<
ffffffffa00b5f15>] process_sdp+0x30c/0x3ec [nf_conntrack_sip]
[<
ffffffff8103f1eb>] ? irq_exit+0x9a/0x9c
[<
ffffffffa00ca738>] ? ip_nat_sdp_media+0x185/0x185 [nf_nat_sip]
We have to remove the RTP expectation if the RTCP expectation hits EBUSY
since we keep trying with other ports until we succeed.
Reported-by: Rafal Fitt <rafalf@aplusc.com.pl>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Ian Campbell [Wed, 22 Aug 2012 00:26:47 +0000 (00:26 +0000)]
xen-netfront: use __pskb_pull_tail to ensure linear area is big enough on RX
I'm slightly concerned by the "only in exceptional circumstances"
comment on __pskb_pull_tail but the structure of an skb just created
by netfront shouldn't hit any of the especially slow cases.
This approach still does slightly more work than the old way, since if
we pull up the entire first frag we now have to shuffle everything
down where before we just received into the right place in the first
place.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Mel Gorman <mgorman@suse.de>
Cc: xen-devel@lists.xensource.com
Cc: netdev@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Tested-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Gao feng [Thu, 23 Aug 2012 15:36:55 +0000 (15:36 +0000)]
net: dev: fix the incorrect hold of net namespace's lo device
When moving a net device from one net namespace to another
net namespace,dev_change_net_namespace calls NETDEV_DOWN
event,so the original net namespace's dst entries which
beloned to this net device will be put into dst_garbage
list.
then dev_change_net_namespace will set this net device's
net to the new net namespace.
If we unregister this net device's driver, this will trigger
the NETDEV_UNREGISTER_FINAL event, dst_ifdown will be called,
and get this net device's dst entries from dst_garbage list,
put these entries' dev to the new net namespace's lo device.
It's not what we want,actually we need these dst entries hold
the original net namespace's lo device,this incorrect device
holding will trigger emg message like below.
unregister_netdevice: waiting for lo to become free. Usage count = 1
so we should call NETDEV_UNREGISTER_FINAL event in
dev_change_net_namespace too,in order to make sure dst entries
already in the dst_garbage list, we need rcu_barrier before we
call NETDEV_UNREGISTER_FINAL event.
With help form Eric Dumazet.
Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Julia Lawall [Wed, 29 Aug 2012 06:49:17 +0000 (06:49 +0000)]
netfilter: nfnetlink_log: fix error return code in init path
Initialize return variable before exiting on an error path.
A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
(
if@p1 (\(ret < 0\|ret != 0\))
{ ... return ret; }
|
ret@p1 = 0
)
... when != ret = e1
when != &ret
*if(...)
{
... when != ret = e2
when forall
return ret;
}
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Julia Lawall [Wed, 29 Aug 2012 06:49:16 +0000 (06:49 +0000)]
netfilter: ctnetlink: fix error return code in init path
Initialize return variable before exiting on an error path.
A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
(
if@p1 (\(ret < 0\|ret != 0\))
{ ... return ret; }
|
ret@p1 = 0
)
... when != ret = e1
when != &ret
*if(...)
{
... when != ret = e2
when forall
return ret;
}
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Julia Lawall [Wed, 29 Aug 2012 06:49:11 +0000 (06:49 +0000)]
ipvs: fix error return code
Initialize return variable before exiting on an error path.
A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
(
if@p1 (\(ret < 0\|ret != 0\))
{ ... return ret; }
|
ret@p1 = 0
)
... when != ret = e1
when != &ret
*if(...)
{
... when != ret = e2
when forall
return ret;
}
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Acked-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Amerigo Wang [Fri, 24 Aug 2012 21:41:11 +0000 (21:41 +0000)]
netpoll: revert
6bdb7fe3104 and fix be_poll() instead
Against -net.
In the patch "netpoll: re-enable irq in poll_napi()", I tried to
fix the following warning:
[100718.051041] ------------[ cut here ]------------
[100718.051048] WARNING: at kernel/softirq.c:159 local_bh_enable_ip+0x7d/0xb0()
(Not tainted)
[100718.051049] Hardware name: ProLiant BL460c G7
...
[100718.051068] Call Trace:
[100718.051073] [<
ffffffff8106b747>] ? warn_slowpath_common+0x87/0xc0
[100718.051075] [<
ffffffff8106b79a>] ? warn_slowpath_null+0x1a/0x20
[100718.051077] [<
ffffffff810747ed>] ? local_bh_enable_ip+0x7d/0xb0
[100718.051080] [<
ffffffff8150041b>] ? _spin_unlock_bh+0x1b/0x20
[100718.051085] [<
ffffffffa00ee974>] ? be_process_mcc+0x74/0x230 [be2net]
[100718.051088] [<
ffffffffa00ea68c>] ? be_poll_tx_mcc+0x16c/0x290 [be2net]
[100718.051090] [<
ffffffff8144fe76>] ? netpoll_poll_dev+0xd6/0x490
[100718.051095] [<
ffffffffa01d24a5>] ? bond_poll_controller+0x75/0x80 [bonding]
[100718.051097] [<
ffffffff8144fde5>] ? netpoll_poll_dev+0x45/0x490
[100718.051100] [<
ffffffff81161b19>] ? ksize+0x19/0x80
[100718.051102] [<
ffffffff81450437>] ? netpoll_send_skb_on_dev+0x157/0x240
by reenabling IRQ before calling ->poll, but it seems more
problems are introduced after that patch:
http://ozlabs.org/~akpm/stuff/IMG_20120824_122054.jpg
http://marc.info/?l=linux-netdev&m=
134563282530588&w=2
So it is safe to fix be2net driver code directly.
This patch reverts the offending commit and fixes be_poll() by
avoid disabling BH there, this is okay because be_poll()
can be called either by poll_napi() which already disables
IRQ, or by net_rx_action() which already disables BH.
Reported-by: Andrew Morton <akpm@linux-foundation.org>
Reported-by: Sylvain Munaut <s.munaut@whatever-company.com>
Cc: Sylvain Munaut <s.munaut@whatever-company.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: David Miller <davem@davemloft.net>
Cc: Sathya Perla <sathya.perla@emulex.com>
Cc: Subbu Seetharaman <subbu.seetharaman@emulex.com>
Cc: Ajit Khaparde <ajit.khaparde@emulex.com>
Signed-off-by: Cong Wang <amwang@redhat.com>
Tested-by: Sylvain Munaut <s.munaut@whatever-company.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 24 Aug 2012 22:54:37 +0000 (18:54 -0400)]
Merge branch 'for-next' of git://git./linux/kernel/git/ebiederm/user-namespace
This is an initial merge in of Eric Biederman's work to start adding
user namespace support to the networking.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 24 Aug 2012 20:35:43 +0000 (16:35 -0400)]
Merge branch 'for-davem' of git://git./linux/kernel/git/bwh/sfc-next
Ben Hutchings says:
====================
1. Change the TX path to stop queues earlier and avoid returning
NETDEV_TX_BUSY.
2. Remove some inefficiencies in soft-TSO.
3. Fix various bugs involving device state transitions and/or reset
scheduling by error handlers.
4. Take advantage of my previous change to operstate initialisation.
5. Miscellaneous cleanup.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 24 Aug 2012 20:23:31 +0000 (16:23 -0400)]
Merge branch 'sfc-3.6' of git://git./linux/kernel/git/bwh/sfc
Ben Hutchings says:
====================
Simple fix for a braino. Please also queue this for the 3.4 and 3.5
stable series.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 24 Aug 2012 19:21:07 +0000 (15:21 -0400)]
Merge branch 'fixes-for-3.6' of git://gitorious.org/linux-can/linux-can
Marc Kleine-Budde says:
====================
here are two fixes for the v3.6 release cycle. Alexey Khoroshilov submitted a
fix for a memory leak in the softing driver (in softing_load_fw()) in case a
krealloc() fails. Sven Schmitt fixed the misuse of the IRQF_SHARED flag in the
irq resouce of the sja1000 platform driver, now the correct flag is used. There
are no mainline users of this feature which need to be converted.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 24 Aug 2012 19:18:03 +0000 (15:18 -0400)]
Merge branch 'for-davem' of git://git./linux/kernel/git/linville/wireless-next
John W. Linville says:
====================
This is a batch of updates intended for 3.7. The bulk of it is
mac80211 changes, including some mesh work from Thomas Pederson and
some multi-channel work from Johannes. A variety of driver updates
and other bits are scattered in there as well.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 24 Aug 2012 19:15:04 +0000 (15:15 -0400)]
Merge branch 'for-davem' of git://git./linux/kernel/git/linville/wireless
John W. Linville says:
====================
This batch of fixes is intended for 3.6...
Johannes Berg gives us a pair of iwlwifi fixes. One corrects some
improperly defined ifdefs that lead to crashes and BUG_ONs. The other
prevents attempts to read SRAM for devices that aren't actually started.
Julia Lawall provides an ipw2100 fix to properly set the return code
from a function call before testing it! :-)
Thomas Huehn corrects the improper use of a constant related to a power
setting in ath5k.
Thomas Pedersen offers a mac80211 fix to properly handle destination
addresses of unicast frames passing though a mesh gate.
Vladimir Zapolskiy provides a brcmsmac fix to properly mark the
interface state when the device goes down.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Ben Hutchings [Fri, 24 Aug 2012 17:04:38 +0000 (18:04 +0100)]
sfc: Fix the initial device operstate
Following commit
8f4cccb ('net: Set device operstate at registration
time') it is now correct and preferable to set the carrier off before
registering a device.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Ben Hutchings [Thu, 2 Aug 2012 00:39:38 +0000 (01:39 +0100)]
sfc: Assign efx and efx->type as early as possible in efx_pci_probe()
We also stop clearing *efx in efx_init_struct(). This is safe because
alloc_etherdev_mq() already clears it for us.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Ben Hutchings [Fri, 27 Jul 2012 19:50:57 +0000 (20:50 +0100)]
sfc: Remove bogus comment about MTU change and RX buffer overrun
RX DMA is limited by the length specified in each descriptor and not
by the MAC. Over-length frames may get into the RX FIFO regardless of
the MAC settings, due to a hardware bug, but they will be truncated by
the packet DMA engine and reported as such in the completion event.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Ben Hutchings [Fri, 27 Jul 2012 19:50:54 +0000 (20:50 +0100)]
sfc: Remove overly paranoid locking assertions from netdev operations
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Ben Hutchings [Fri, 27 Jul 2012 19:50:52 +0000 (20:50 +0100)]
sfc: Fix reset vs probe/remove/PM races involving efx_nic::state
We try to defer resets while the device is not READY, but we're not
doing this quite correctly. In particular, changes to efx_nic::state
are documented as serialised by the RTNL lock, but they aren't.
1. We check whether a reset was requested during probe (suggesting
broken hardware) before we allow requested resets to be scheduled.
This leaves a window where a requested reset would be deferred
indefinitely.
2. Although we cancel the reset work item during device removal,
there are still later operations that can cause it to be scheduled
again. We need to check the state before scheduling it.
3. Since the state can change between scheduling and running of
the work item, we still need to check it there, and we need to
do so *after* acquiring the RTNL lock which serialises state
changes.
4. We must cancel the reset work item during device removal, if the
state could ever have been READY. This wasn't done in some of the
failure paths from efx_pci_probe(). Move the cancellation to
efx_pci_remove_main().
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Ben Hutchings [Fri, 27 Jul 2012 19:48:36 +0000 (20:48 +0100)]
sfc: Improve log messages in case we abort probe due to a pending reset
The current informational message doesn't properly explain what
happens, and could also appear if we defer a reset during
suspend/resume.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Ben Hutchings [Fri, 27 Jul 2012 19:46:41 +0000 (20:46 +0100)]
sfc: Never try to stop and start a NIC that is disabled
efx_change_mtu() and efx_realloc_channels() each stop and start much
of the NIC, even if it has been disabled. Since efx_start_all() is a
no-op when the NIC is disabled, this is probably harmless in the case
of efx_change_mtu(), but efx_realloc_channels() also reenables
interrupts which could be a bad thing to do.
Change efx_start_all() and efx_start_interrupts() to assert that the
NIC is not disabled, but make efx_stop_interrupts() do nothing if the
NIC is disabled (since it is already stopped), consistent with
efx_stop_all().
Update comments for efx_start_all() and efx_stop_all() to describe
their purpose and preconditions more accurately.
Add a common function to check and log if the NIC is disabled, and use
it in efx_net_open(), efx_change_mtu() and efx_realloc_channels().
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Ben Hutchings [Fri, 27 Jul 2012 18:35:52 +0000 (19:35 +0100)]
sfc: Hold RTNL lock (only) when calling efx_stop_interrupts()
Interrupt state should be consistently guarded by the RTNL lock once
the net device is registered.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Ben Hutchings [Fri, 27 Jul 2012 18:35:47 +0000 (19:35 +0100)]
sfc: Keep disabled NICs quiescent during suspend/resume
Currently we ignore and clear the disabled state.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Ben Hutchings [Fri, 27 Jul 2012 18:35:39 +0000 (19:35 +0100)]
sfc: Hold the RTNL lock for more of the suspend/resume cycle
I don't think these PM functions can race with userland net device
operations, but it's much easier to reason about locking if state is
consistently guarded by the same lock.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Ben Hutchings [Fri, 27 Jul 2012 18:31:16 +0000 (19:31 +0100)]
sfc: Change state names to be clearer, and comment them
STATE_INIT and STATE_FINI are equivalent and represent incompletely
initialised states; combine them as STATE_UNINIT.
Rename STATE_RUNNING to STATE_READY, to avoid confusion with
netif_running() and IFF_RUNNING.
The comments do not quite match current usage, but this will be
corrected in subsequent fixes.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Ben Hutchings [Fri, 22 Jun 2012 01:44:01 +0000 (02:44 +0100)]
sfc: Stash header offsets for TSO in struct tso_state
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Ben Hutchings [Tue, 19 Jun 2012 19:03:41 +0000 (20:03 +0100)]
sfc: Replace tso_state::full_packet_space with ip_base_len
We only use tso_state::full_packet_space to calculate the IPv4 tot_len
or IPv6 payload_len, not to set tso_state::packet_space. Replace it
with an ip_base_len field holding the value of tot_len or payload_len
before including the TCP payload, which is much more useful when
constructing the new headers.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Ben Hutchings [Thu, 17 May 2012 17:40:54 +0000 (18:40 +0100)]
sfc: Simplify TSO header buffer allocation
TSO header buffers contain a control structure immediately followed by
the packet headers, and are kept on a free list when not in use. This
complicates buffer management and tends to result in cache read misses
when we recycle such buffers (particularly if DMA-coherent memory
requires caches to be disabled).
Replace the free list with a simple mapping by descriptor index. We
know that there is always a payload descriptor between any two
descriptors with TSO header buffers, so we can allocate only one
such buffer for each two descriptors.
While we're at it, use a standard error code for allocation failure,
not -1.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Ben Hutchings [Tue, 22 May 2012 00:27:58 +0000 (01:27 +0100)]
sfc: Stop TX queues before they fill up
We now have a definite upper bound on the number of descriptors per
skb; use that to stop the queue when the next packet might not fit.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Ben Hutchings [Thu, 17 May 2012 19:52:20 +0000 (20:52 +0100)]
sfc: Refactor struct efx_tx_buffer to use a flags field
Add a flags field to struct efx_tx_buffer, replacing the
continuation and map_single booleans.
Since a single descriptor cannot be both a TSO header and the last
descriptor for an skb, unionise efx_tx_buffer::{skb,tsoh} and add
flags for validity of these fields.
Clear all flags in free buffers (whereas previously the continuation
flag would be set).
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Yuchung Cheng [Thu, 23 Aug 2012 07:05:17 +0000 (07:05 +0000)]
tcp: fix cwnd reduction for non-sack recovery
The cwnd reduction in fast recovery is based on the number of packets
newly delivered per ACK. For non-sack connections every DUPACK
signifies a packet has been delivered, but the sender mistakenly
skips counting them for cwnd reduction.
The fix is to compute newly_acked_sacked after DUPACKs are accounted
in sacked_out for non-sack connections.
Signed-off-by: Yuchung Cheng <ycheng@google.com>
Acked-by: Nandita Dukkipati <nanditad@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jiri Pirko [Thu, 23 Aug 2012 03:26:53 +0000 (03:26 +0000)]
team: do not allow to add VLAN challenged port when vlan is used
Reported-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jiri Pirko [Thu, 23 Aug 2012 03:26:52 +0000 (03:26 +0000)]
vlan: add helper which can be called to see if device is used by vlan
also, remove unused vlan_info definition from header
CC: Patrick McHardy <kaber@trash.net>
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jiri Pirko [Thu, 23 Aug 2012 03:26:51 +0000 (03:26 +0000)]
team: don't print warn message on -ESRCH during event send
When no one is listening on NL socket, -ESRCH is returned and warning
message is printed. This message is confusing people and in fact has no
meaning. So do not print it in this case.
Reported-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pablo Neira Ayuso [Thu, 23 Aug 2012 02:09:11 +0000 (02:09 +0000)]
netlink: fix possible spoofing from non-root processes
Non-root user-space processes can send Netlink messages to other
processes that are well-known for being subscribed to Netlink
asynchronous notifications. This allows ilegitimate non-root
process to send forged messages to Netlink subscribers.
The userspace process usually verifies the legitimate origin in
two ways:
a) Socket credentials. If UID != 0, then the message comes from
some ilegitimate process and the message needs to be dropped.
b) Netlink portID. In general, portID == 0 means that the origin
of the messages comes from the kernel. Thus, discarding any
message not coming from the kernel.
However, ctnetlink sets the portID in event messages that has
been triggered by some user-space process, eg. conntrack utility.
So other processes subscribed to ctnetlink events, eg. conntrackd,
know that the event was triggered by some user-space action.
Neither of the two ways to discard ilegitimate messages coming
from non-root processes can help for ctnetlink.
This patch adds capability validation in case that dst_pid is set
in netlink_sendmsg(). This approach is aggressive since existing
applications using any Netlink bus to deliver messages between
two user-space processes will break. Note that the exception is
NETLINK_USERSOCK, since it is reserved for netlink-to-netlink
userspace communication.
Still, if anyone wants that his Netlink bus allows netlink-to-netlink
userspace, then they can set NL_NONROOT_SEND. However, by default,
I don't think it makes sense to allow to use NETLINK_ROUTE to
communicate two processes that are sending no matter what information
that is not related to link/neighbouring/routing. They should be using
NETLINK_USERSOCK instead for that.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Wei Yongjun [Wed, 22 Aug 2012 21:28:40 +0000 (21:28 +0000)]
w5300: using eth_hw_addr_random() for random MAC and set device flag
Using eth_hw_addr_random() to generate a random Ethernet address
(MAC) to be used by a net device and set addr_assign_type.
Not need to duplicating its implementation.
spatch with a semantic match is used to found this problem.
(http://coccinelle.lip6.fr/)
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
Wei Yongjun [Wed, 22 Aug 2012 21:28:19 +0000 (21:28 +0000)]
w5100: using eth_hw_addr_random() for random MAC and set device flag
Using eth_hw_addr_random() to generate a random Ethernet address
(MAC) to be used by a net device and set addr_assign_type.
Not need to duplicating its implementation.
spatch with a semantic match is used to found this problem.
(http://coccinelle.lip6.fr/)
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
Wei Yongjun [Wed, 22 Aug 2012 20:49:33 +0000 (20:49 +0000)]
wimax/i2400m: use is_zero_ether_addr() instead of memcmp()
Using is_zero_ether_addr() instead of directly use
memcmp() to determine if the ethernet address is all
zeros.
spatch with a semantic match is used to found this problem.
(http://coccinelle.lip6.fr/)
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
Rayagond Kokatanur [Wed, 22 Aug 2012 21:28:18 +0000 (21:28 +0000)]
stmmac: add header inclusion protection
This patch adds "#ifndef __<header>_H" for protecting header from double
inclusion.
Signed-off-by: Rayagond Kokatanur <rayagond@vayavyalabs.com>
Hacked-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>