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Debugging issues caused by pfmemalloc is often tedious.
Add a new SNMP counter to more easily diagnose these problems.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Josef Bacik <jbacik@fb.com>
Acked-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The 88e1545 PHYs are discrete Marvell PHYs, found in a quad package on
the zii-devel-b board. Add support for it to the Marvell PHY driver.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This ioctl opens a file to which a socket is bound and
returns a file descriptor. The caller has to have CAP_NET_ADMIN
in the socket network namespace.
Currently it is impossible to get a path and a mount point
for a socket file. socket_diag reports address, device ID and inode
number for unix sockets. An address can contain a relative path or
a file may be moved somewhere. And these properties say nothing about
a mount namespace and a mount point of a socket file.
With the introduced ioctl, we can get a path by reading
/proc/self/fd/X and get mnt_id from /proc/self/fdinfo/X.
In CRIU we are going to use this ioctl to dump and restore unix socket.
Here is an example how it can be used:
$ strace -e socket,bind,ioctl ./test /tmp/test_sock
socket(AF_UNIX, SOCK_STREAM, 0) = 3
bind(3, {sa_family=AF_UNIX, sun_path="test_sock"}, 11) = 0
ioctl(3, SIOCUNIXFILE, 0) = 4
^Z
$ ss -a | grep test_sock
u_str LISTEN 0 1 test_sock 17798 * 0
$ ls -l /proc/760/fd/{3,4}
lrwx------ 1 root root 64 Feb 1 09:41 3 -> 'socket:[17798]'
l--------- 1 root root 64 Feb 1 09:41 4 -> /tmp/test_sock
$ cat /proc/760/fdinfo/4
pos: 0
flags: 012000000
mnt_id: 40
$ cat /proc/self/mountinfo | grep "^40\s"
40 19 0:37 / /tmp rw shared:23 - tmpfs tmpfs rw
Signed-off-by: Andrei Vagin <avagin@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The mv88e6390 Ethernet switch has internal PHYs. These PHYs don't have
an model ID in the ID2 register. So the MDIO driver in the switch
intercepts reads to this register, and returns the switch family ID.
Extend the Marvell PHY driver by including this ID, and treat the PHY
as a 88E1540.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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All merge conflicts were simple overlapping changes.
Signed-off-by: David S. Miller <davem@davemloft.net>
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Pull networking fixes from David Miller:
1) Fix handling of interrupt status in stmmac driver. Just because we
have masked the event from generating interrupts, doesn't mean the
bit won't still be set in the interrupt status register. From Alexey
Brodkin.
2) Fix DMA API debugging splats in gianfar driver, from Arseny Solokha.
3) Fix off-by-one error in __ip6_append_data(), from Vlad Yasevich.
4) cls_flow does not match on icmpv6 codes properly, from Simon Horman.
5) Initial MAC address can be set incorrectly in some scenerios, from
Ivan Vecera.
6) Packet header pointer arithmetic fix in ip6_tnl_parse_tlv_end_lim(),
from Dan Carpenter.
7) Fix divide by zero in __tcp_select_window(), from Eric Dumazet.
8) Fix crash in iwlwifi when unregistering thermal zone, from Jens
Axboe.
9) Check for DMA mapping errors in starfire driver, from Alexey
Khoroshilov.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (31 commits)
tcp: fix 0 divide in __tcp_select_window()
ipv6: pointer math error in ip6_tnl_parse_tlv_enc_lim()
net: fix ndo_features_check/ndo_fix_features comment ordering
net/sched: matchall: Fix configuration race
be2net: fix initial MAC setting
ipv6: fix flow labels when the traffic class is non-0
net: thunderx: avoid dereferencing xcv when NULL
net/sched: cls_flower: Correct matching on ICMPv6 code
ipv6: Paritially checksum full MTU frames
net/mlx4_core: Avoid command timeouts during VF driver device shutdown
gianfar: synchronize DMA API usage by free_skb_rx_queue w/ gfar_new_page
net: ethtool: add support for 2500BaseT and 5000BaseT link modes
can: bcm: fix hrtimer/tasklet termination in bcm op removal
net: adaptec: starfire: add checks for dma mapping errors
net: phy: micrel: KSZ8795 do not set SUPPORTED_[Asym_]Pause
can: Fix kernel panic at security_sock_rcv_skb
net: macb: Fix 64 bit addressing support for GEM
stmmac: Discard masked flags in interrupt status register
net/mlx5e: Check ets capability before ets query FW command
net/mlx5e: Fix update of hash function/key via ethtool
...
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull fscache fixes from Al Viro.
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
fscache: Fix dead object requeue
fscache: Clear outstanding writes when disabling a cookie
FS-Cache: Initialise stores_lock in netfs cookie
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git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next
Kalle Valo says:
====================
wireless-drivers-next patches for 4.11
It's nice to see rt2x00 development has becoming active, for example
adding support for a new chip version. Also wcn36xx has been converted
to use the recently merged QCOM_SMD subsystem. Otherwise new features
and fixes it lots of drivers.
Major changes:
iwlwifi
* some more work in preparation for A000 family support
* add support for radiotap timestamps
* some work on our firmware debugging capabilities
wcn36xx
* convert to a proper QCOM_SMD driver (from the platform_driver interface)
ath10k
* VHT160 support
* dump Copy Engine registers during firmware crash
* search board file extension from SMBIOS
wil6210
* add disable_ap_sme module parameter
rt2x00
* support RT3352 with external PA
* support for RT3352 with 20MHz crystal
* add support for RT5350 WiSoC
brcmfmac
* add support for BCM43455 sdio device
rtl8xxxu
* add support for D-Link DWA-131 rev E1, TP-Link TL-WN822N v4 and others
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Commit cdba756f5803a2 ("net: move ndo_features_check() close to
ndo_start_xmit()") inadvertently moved the doc comment for
.ndo_fix_features instead of .ndo_features_check. Fix the comment
ordering.
Fixes: cdba756f5803a2 ("net: move ndo_features_check() close to ndo_start_xmit()")
Signed-off-by: Dimitris Michailidis <dmichail@google.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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