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  1. 15 Nov, 2020 15 commits
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  7. 12 Nov, 2020 12 commits
    • Linus Torvalds's avatar
      Merge tag 'net-5.10-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net · db7c9535
      Linus Torvalds authored 
      Pull networking fixes from Jakub Kicinski:
 "Current release - regressions:

   - arm64: dts: fsl-ls1028a-kontron-sl28: specify in-band mode for
     ENETC

  Current release - bugs in new features:

   - mptcp: provide rmem[0] limit offset to fix oops

  Previous release - regressions:

   - IPv6: Set SIT tunnel hard_header_len to zero to fix path MTU
     calculations

   - lan743x: correctly handle chips with internal PHY

   - bpf: Don't rely on GCC __attribute__((optimize)) to disable GCSE

   - mlx5e: Fix VXLAN port table synchronization after function reload

  Previous release - always broken:

   - bpf: Zero-fill re-used per-cpu map element

   - fix out-of-order UDP packets when forwarding with UDP GSO fraglists
     turned on:
       - fix UDP header access on Fast/frag0 UDP GRO
       - fix IP header access and skb lookup on Fast/frag0 UDP GRO

   - ethtool: netlink: add missing netdev_features_change() call

   - net: Update window_clamp if SOCK_RCVBUF is set

   - igc: Fix returning wrong statistics

   - ch_ktls: fix multiple leaks and corner cases in Chelsio TLS offload

   - tunnels: Fix off-by-one in lower MTU bounds for ICMP/ICMPv6 replies

   - r8169: disable hw csum for short packets on all chip versions

   - vrf: Fix fast path output packet handling with async Netfilter
     rules"

* tag 'net-5.10-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (65 commits)
  lan743x: fix use of uninitialized variable
  net: udp: fix IP header access and skb lookup on Fast/frag0 UDP GRO
  net: udp: fix UDP header access on Fast/frag0 UDP GRO
  devlink: Avoid overwriting port attributes of registered port
  vrf: Fix fast path output packet handling with async Netfilter rules
  cosa: Add missing kfree in error path of cosa_write
  net: switch to the kernel.org patchwork instance
  ch_ktls: stop the txq if reaches threshold
  ch_ktls: tcb update fails sometimes
  ch_ktls/cxgb4: handle partial tag alone SKBs
  ch_ktls: don't free skb before sending FIN
  ch_ktls: packet handling prior to start marker
  ch_ktls: Correction in middle record handling
  ch_ktls: missing handling of header alone
  ch_ktls: Correction in trimmed_len calculation
  cxgb4/ch_ktls: creating skbs causes panic
  ch_ktls: Update cheksum information
  ch_ktls: Correction in finding correct length
  cxgb4/ch_ktls: decrypted bit is not enough
  net/x25: Fix null-ptr-deref in x25_connect
  ...
      db7c9535
    • Linus Torvalds's avatar
      Merge tag 'nfs-for-5.10-2' of git://git.linux-nfs.org/projects/anna/linux-nfs · 200f9d21
      Linus Torvalds authored 
      Pull NFS client bugfixes from Anna Schumaker:
 "Stable fixes:
  - Fix failure to unregister shrinker

  Other fixes:
  - Fix unnecessary locking to clear up some contention
  - Fix listxattr receive buffer size
  - Fix default mount options for nfsroot"

* tag 'nfs-for-5.10-2' of git://git.linux-nfs.org/projects/anna/linux-nfs:
  NFS: Remove unnecessary inode lock in nfs_fsync_dir()
  NFS: Remove unnecessary inode locking in nfs_llseek_dir()
  NFS: Fix listxattr receive buffer size
  NFSv4.2: fix failure to unregister shrinker
  nfsroot: Default mount option should ask for built-in NFS version
      200f9d21
    • Linus Torvalds's avatar
      Merge tag 'acpi-5.10-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm · af5043c8
      Linus Torvalds authored 
      Pull ACPI fixes from Rafael Wysocki:
 "These are mostly docmentation fixes and janitorial changes plus some
  new device IDs and a new quirk.

  Specifics:

   - Fix documentation regarding GPIO properties (Andy Shevchenko)

   - Fix spelling mistakes in ACPI documentation (Flavio Suligoi)

   - Fix white space inconsistencies in ACPI code (Maximilian Luz)

   - Fix string formatting in the ACPI Generic Event Device (GED) driver
     (Nick Desaulniers)

   - Add Intel Alder Lake device IDs to the ACPI drivers used by the
     Dynamic Platform and Thermal Framework (Srinivas Pandruvada)

   - Add lid-related DMI quirk for Medion Akoya E2228T to the ACPI
     button driver (Hans de Goede)"

* tag 'acpi-5.10-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI: DPTF: Support Alder Lake
  Documentation: ACPI: fix spelling mistakes
  ACPI: button: Add DMI quirk for Medion Akoya E2228T
  ACPI: GED: fix -Wformat
  ACPI: Fix whitespace inconsistencies
  ACPI: scan: Fix acpi_dma_configure_id() kerneldoc name
  Documentation: firmware-guide: gpio-properties: Clarify initial output state
  Documentation: firmware-guide: gpio-properties: active_low only for GpioIo()
  Documentation: firmware-guide: gpio-properties: Fix factual mistakes
      af5043c8
    • Linus Torvalds's avatar
      Merge tag 'pm-5.10-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm · fcfb6791
      Linus Torvalds authored 
      Pull power management fixes from Rafael Wysocki:
 "Make the intel_pstate driver behave as expected when it operates in
  the passive mode with HWP enabled and the 'powersave' governor on top
  of it"

* tag 'pm-5.10-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  cpufreq: intel_pstate: Take CPUFREQ_GOV_STRICT_TARGET into account
  cpufreq: Add strict_target to struct cpufreq_policy
  cpufreq: Introduce CPUFREQ_GOV_STRICT_TARGET
  cpufreq: Introduce governor flags
      fcfb6791
    • Sven Van Asbroeck's avatar
      lan743x: fix use of uninitialized variable · edbc2111
      Sven Van Asbroeck authored 
      When no devicetree is present, the driver will use an
uninitialized variable.

Fix by initializing this variable.

Fixes: 902a66e0 ("lan743x: correctly handle chips with internal PHY")
Reported-by: default avatarkernel test robot <lkp@intel.com>
Signed-off-by: default avatarSven Van Asbroeck <thesven73@gmail.com>
Link: https://lore.kernel.org/r/20201112152513.1941-1-TheSven73@gmail.comSigned-off-by: default avatarJakub Kicinski <kuba@kernel.org>
      edbc2111
    • Jakub Kicinski's avatar
      Merge branch 'net-udp-fix-fast-frag0-udp-gro' · 5861c8cb
      Jakub Kicinski authored 
      Alexander Lobakin says:

====================
net: udp: fix Fast/frag0 UDP GRO

While testing UDP GSO fraglists forwarding through driver that uses
Fast GRO (via napi_gro_frags()), I was observing lots of out-of-order
iperf packets:

[ ID] Interval           Transfer     Bitrate         Jitter
[SUM]  0.0-40.0 sec  12106 datagrams received out-of-order

Simple switch to napi_gro_receive() or any other method without frag0
shortcut completely resolved them.

I've found two incorrect header accesses in GRO receive callback(s):
 - udp_hdr() (instead of udp_gro_udphdr()) that always points to junk
   in "fast" mode and could probably do this in "regular".
   This was the actual bug that caused all out-of-order delivers;
 - udp{4,6}_lib_lookup_skb() -> ip{,v6}_hdr() (instead of
   skb_gro_network_header()) that potentionally might return odd
   pointers in both modes.

Each patch addresses one of these two issues.

This doesn't cover a support for nested tunnels as it's out of the
subject and requires more invasive changes. It will be handled
separately in net-next series.

Credits:
Cc: Eric Dumazet <edumazet@google.com>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Willem de Bruijn <willemb@google.com>

Since v4 [0]:
 - split the fix into two logical ones (Willem);
 - replace ternaries with plain ifs to beautify the code (Jakub);
 - drop p->data part to reintroduce it later in abovementioned set.

Since v3 [1]:
 - restore the original {,__}udp{4,6}_lib_lookup_skb() and use
   private versions of them inside GRO code (Willem).

Since v2 [2]:
 - dropped redundant check introduced in v2 as it's performed right
   before (thanks to Eric);
 - udp_hdr() switched to data + off for skbs from list (also Eric);
 - fixed possible malfunction of {,__}udp{4,6}_lib_lookup_skb() with
   Fast/frag0 due to ip{,v6}_hdr() usage (Willem).

Since v1 [3]:
 - added a NULL pointer check for "uh" as suggested by Willem.

[0] https://lore.kernel.org/netdev/Ha2hou5eJPcblo4abjAqxZRzIl1RaLs2Hy0oOAgFs@cp4-web-036.plabs.ch
[1] https://lore.kernel.org/netdev/MgZce9htmEtCtHg7pmWxXXfdhmQ6AHrnltXC41zOoo@cp7-web-042.plabs.ch
[2] https://lore.kernel.org/netdev/0eaG8xtbtKY1dEKCTKUBubGiC9QawGgB3tVZtNqVdY@cp4-web-030.plabs.ch
[3] https://lore.kernel.org/netdev/YazU6GEzBdpyZMDMwJirxDX7B4sualpDG68ADZYvJI@cp4-web-034.plabs.ch
====================

Link: https://lore.kernel.org/r/hjGOh0iCOYyo1FPiZh6TMXcx3YCgNs1T1eGKLrDz8@cp4-web-037.plabs.chSigned-off-by: default avatarJakub Kicinski <kuba@kernel.org>
      5861c8cb
    • Alexander Lobakin's avatar
      net: udp: fix IP header access and skb lookup on Fast/frag0 UDP GRO · 55e72988
      Alexander Lobakin authored 
      udp{4,6}_lib_lookup_skb() use ip{,v6}_hdr() to get IP header of the
packet. While it's probably OK for non-frag0 paths, this helpers
will also point to junk on Fast/frag0 GRO when all headers are
located in frags. As a result, sk/skb lookup may fail or give wrong
results. To support both GRO modes, skb_gro_network_header() might
be used. To not modify original functions, add private versions of
udp{4,6}_lib_lookup_skb() only to perform correct sk lookups on GRO.

Present since the introduction of "application-level" UDP GRO
in 4.7-rc1.

Misc: replace totally unneeded ternaries with plain ifs.

Fixes: a6024562 ("udp: Add GRO functions to UDP socket")
Suggested-by: default avatarWillem de Bruijn <willemb@google.com>
Cc: Eric Dumazet <edumazet@google.com>
Signed-off-by: default avatarAlexander Lobakin <alobakin@pm.me>
Acked-by: default avatarWillem de Bruijn <willemb@google.com>
Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
      55e72988
    • Alexander Lobakin's avatar
      net: udp: fix UDP header access on Fast/frag0 UDP GRO · 4b1a8628
      Alexander Lobakin authored 
      UDP GRO uses udp_hdr(skb) in its .gro_receive() callback. While it's
probably OK for non-frag0 paths (when all headers or even the entire
frame are already in skb head), this inline points to junk when
using Fast GRO (napi_gro_frags() or napi_gro_receive() with only
Ethernet header in skb head and all the rest in the frags) and breaks
GRO packet compilation and the packet flow itself.
To support both modes, skb_gro_header_fast() + skb_gro_header_slow()
are typically used. UDP even has an inline helper that makes use of
them, udp_gro_udphdr(). Use that instead of troublemaking udp_hdr()
to get rid of the out-of-order delivers.

Present since the introduction of plain UDP GRO in 5.0-rc1.

Fixes: e20cf8d3 ("udp: implement GRO for plain UDP sockets.")
Cc: Eric Dumazet <edumazet@google.com>
Signed-off-by: default avatarAlexander Lobakin <alobakin@pm.me>
Acked-by: default avatarWillem de Bruijn <willemb@google.com>
Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
      4b1a8628
    • Jakub Kicinski's avatar
      Merge branch '40GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue · 8a5c2906
      Jakub Kicinski authored 
      Tony Nguyen says:

====================
Intel Wired LAN Driver Updates 2020-11-10

This series contains updates to i40e and igc drivers and the MAINTAINERS
file.

Slawomir fixes updating VF MAC addresses to fix various issues related
to reporting and setting of these addresses for i40e.

Dan Carpenter fixes a possible used before being initialized issue for
i40e.

Vinicius fixes reporting of netdev stats for igc.

Tony updates repositories for Intel Ethernet Drivers.

* '40GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue:
  MAINTAINERS: Update repositories for Intel Ethernet Drivers
  igc: Fix returning wrong statistics
  i40e, xsk: uninitialized variable in i40e_clean_rx_irq_zc()
  i40e: Fix MAC address setting for a VF via Host/VM
====================

Link: https://lore.kernel.org/r/20201111001955.533210-1-anthony.l.nguyen@intel.comSigned-off-by: default avatarJakub Kicinski <kuba@kernel.org>
      8a5c2906
    • Parav Pandit's avatar
      devlink: Avoid overwriting port attributes of registered port · 9f73bd1c
      Parav Pandit authored 
      Cited commit in fixes tag overwrites the port attributes for the
registered port.

Avoid such error by checking registered flag before setting attributes.

Fixes: 71ad8d55 ("devlink: Replace devlink_port_attrs_set parameters with a struct")
Signed-off-by: default avatarParav Pandit <parav@nvidia.com>
Reviewed-by: default avatarJiri Pirko <jiri@nvidia.com>
Link: https://lore.kernel.org/r/20201111034744.35554-1-parav@nvidia.comSigned-off-by: default avatarJakub Kicinski <kuba@kernel.org>
      9f73bd1c
    • Martin Willi's avatar
      vrf: Fix fast path output packet handling with async Netfilter rules · 9e2b7fa2
      Martin Willi authored 
      VRF devices use an optimized direct path on output if a default qdisc
is involved, calling Netfilter hooks directly. This path, however, does
not consider Netfilter rules completing asynchronously, such as with
NFQUEUE. The Netfilter okfn() is called for asynchronously accepted
packets, but the VRF never passes that packet down the stack to send
it out over the slave device. Using the slower redirect path for this
seems not feasible, as we do not know beforehand if a Netfilter hook
has asynchronously completing rules.

Fix the use of asynchronously completing Netfilter rules in OUTPUT and
POSTROUTING by using a special completion function that additionally
calls dst_output() to pass the packet down the stack. Also, slightly
adjust the use of nf_reset_ct() so that is called in the asynchronous
case, too.

Fixes: dcdd43c4 ("net: vrf: performance improvements for IPv4")
Fixes: a9ec54d1 ("net: vrf: performance improvements for IPv6")
Signed-off-by: default avatarMartin Willi <martin@strongswan.org>
Link: https://lore.kernel.org/r/20201106073030.3974927-1-martin@strongswan.orgSigned-off-by: default avatarJakub Kicinski <kuba@kernel.org>
      9e2b7fa2
    • Trond Myklebust's avatar
      NFS: Remove unnecessary inode lock in nfs_fsync_dir() · 11decaf8
      Trond Myklebust authored 
      nfs_inc_stats() is already thread-safe, and there are no other reasons
to hold the inode lock here.
Signed-off-by: default avatarTrond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: default avatarAnna Schumaker <Anna.Schumaker@Netapp.com>
      11decaf8
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