platform/kernel/linux-starfive.git
2 years agoMerge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
Jakub Kicinski [Sat, 30 Jul 2022 02:04:28 +0000 (19:04 -0700)]
Merge https://git./linux/kernel/git/bpf/bpf-next

Andrii Nakryiko says:

====================
 bpf-next 2022-07-29

We've added 22 non-merge commits during the last 4 day(s) which contain
a total of 27 files changed, 763 insertions(+), 120 deletions(-).

The main changes are:

1) Fixes to allow setting any source IP with bpf_skb_set_tunnel_key() helper,
   from Paul Chaignon.

2) Fix for bpf_xdp_pointer() helper when doing sanity checking, from Joanne Koong.

3) Fix for XDP frame length calculation, from Lorenzo Bianconi.

4) Libbpf BPF_KSYSCALL docs improvements and fixes to selftests to accommodate
   s390x quirks with socketcall(), from Ilya Leoshkevich.

5) Allow/denylist and CI configs additions to selftests/bpf to improve BPF CI,
   from Daniel Müller.

6) BPF trampoline + ftrace follow up fixes, from Song Liu and Xu Kuohai.

7) Fix allocation warnings in netdevsim, from Jakub Kicinski.

8) bpf_obj_get_opts() libbpf API allowing to provide file flags, from Joe Burton.

9) vsnprintf usage fix in bpf_snprintf_btf(), from Fedor Tokarev.

10) Various small fixes and clean ups, from Daniel Müller, Rongguang Wei,
    Jörn-Thorben Hinz, Yang Li.

* https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (22 commits)
  bpf: Remove unneeded semicolon
  libbpf: Add bpf_obj_get_opts()
  netdevsim: Avoid allocation warnings triggered from user space
  bpf: Fix NULL pointer dereference when registering bpf trampoline
  bpf: Fix test_progs -j error with fentry/fexit tests
  selftests/bpf: Bump internal send_signal/send_signal_tracepoint timeout
  bpftool: Don't try to return value from void function in skeleton
  bpftool: Replace sizeof(arr)/sizeof(arr[0]) with ARRAY_SIZE macro
  bpf: btf: Fix vsnprintf return value check
  libbpf: Support PPC in arch_specific_syscall_pfx
  selftests/bpf: Adjust vmtest.sh to use local kernel configuration
  selftests/bpf: Copy over libbpf configs
  selftests/bpf: Sort configuration
  selftests/bpf: Attach to socketcall() in test_probe_user
  libbpf: Extend BPF_KSYSCALL documentation
  bpf, devmap: Compute proper xdp_frame len redirecting frames
  bpf: Fix bpf_xdp_pointer return pointer
  selftests/bpf: Don't assign outer source IP to host
  bpf: Set flow flag to allow any source IP in bpf_tunnel_key
  geneve: Use ip_tunnel_key flow flags in route lookups
  ...
====================

Link: https://lore.kernel.org/r/20220729230948.1313527-1-andrii@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agobpf: Remove unneeded semicolon
Yang Li [Mon, 25 Jul 2022 22:27:33 +0000 (06:27 +0800)]
bpf: Remove unneeded semicolon

Eliminate the following coccicheck warning:
/kernel/bpf/trampoline.c:101:2-3: Unneeded semicolon

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20220725222733.55613-1-yang.lee@linux.alibaba.com
2 years agolibbpf: Add bpf_obj_get_opts()
Joe Burton [Fri, 29 Jul 2022 20:27:27 +0000 (20:27 +0000)]
libbpf: Add bpf_obj_get_opts()

Add an extensible variant of bpf_obj_get() capable of setting the
`file_flags` parameter.

This parameter is needed to enable unprivileged access to BPF maps.
Without a method like this, users must manually make the syscall.

Signed-off-by: Joe Burton <jevburton@google.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20220729202727.3311806-1-jevburton.kernel@gmail.com
2 years agonetdevsim: Avoid allocation warnings triggered from user space
Jakub Kicinski [Tue, 26 Jul 2022 21:36:05 +0000 (14:36 -0700)]
netdevsim: Avoid allocation warnings triggered from user space

We need to suppress warnings from sily map sizes. Also switch
from GFP_USER to GFP_KERNEL_ACCOUNT, I'm pretty sure I misunderstood
the flags when writing this code.

Fixes: 395cacb5f1a0 ("netdevsim: bpf: support fake map offload")
Reported-by: syzbot+ad24705d3fd6463b18c6@syzkaller.appspotmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20220726213605.154204-1-kuba@kernel.org
2 years agobpf: Fix NULL pointer dereference when registering bpf trampoline
Xu Kuohai [Thu, 28 Jul 2022 11:40:48 +0000 (07:40 -0400)]
bpf: Fix NULL pointer dereference when registering bpf trampoline

A panic was reported on arm64:

[   44.517109] audit: type=1334 audit(1658859870.268:59): prog-id=19 op=LOAD
[   44.622031] Unable to handle kernel NULL pointer dereference at
virtual address 0000000000000010
[   44.624321] Mem abort info:
[   44.625049]   ESR = 0x0000000096000004
[   44.625935]   EC = 0x25: DABT (current EL), IL = 32 bits
[   44.627182]   SET = 0, FnV = 0
[   44.627930]   EA = 0, S1PTW = 0
[   44.628684]   FSC = 0x04: level 0 translation fault
[   44.629788] Data abort info:
[   44.630474]   ISV = 0, ISS = 0x00000004
[   44.631362]   CM = 0, WnR = 0
[   44.632041] user pgtable: 4k pages, 48-bit VAs, pgdp=0000000100ab5000
[   44.633494] [0000000000000010] pgd=0000000000000000, p4d=0000000000000000
[   44.635202] Internal error: Oops: 96000004 [#1] SMP
[   44.636452] Modules linked in: xfs crct10dif_ce ghash_ce virtio_blk
virtio_console virtio_mmio qemu_fw_cfg
[   44.638713] CPU: 2 PID: 1 Comm: systemd Not tainted 5.19.0-rc7 #1
[   44.640164] Hardware name: QEMU KVM Virtual Machine, BIOS 0.0.0 02/06/2015
[   44.641799] pstate: 00400005 (nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[   44.643404] pc : ftrace_set_filter_ip+0x24/0xa0
[   44.644659] lr : bpf_trampoline_update.constprop.0+0x428/0x4a0
[   44.646118] sp : ffff80000803b9f0
[   44.646950] x29: ffff80000803b9f0 x28: ffff0b5d80364400 x27: ffff80000803bb48
[   44.648721] x26: ffff8000085ad000 x25: ffff0b5d809d2400 x24: 0000000000000000
[   44.650493] x23: 00000000ffffffed x22: ffff0b5dd7ea0900 x21: 0000000000000000
[   44.652279] x20: 0000000000000000 x19: 0000000000000000 x18: ffffffffffffffff
[   44.654067] x17: 0000000000000000 x16: 0000000000000000 x15: ffffffffffffffff
[   44.655787] x14: ffff0b5d809d2498 x13: ffff0b5d809d2432 x12: 0000000005f5e100
[   44.657535] x11: abcc77118461cefd x10: 000000000000005f x9 : ffffa7219cb5b190
[   44.659254] x8 : ffffa7219c8e0000 x7 : 0000000000000000 x6 : ffffa7219db075e0
[   44.661066] x5 : ffffa7219d3130e0 x4 : ffffa7219cab9da0 x3 : 0000000000000000
[   44.662837] x2 : 0000000000000000 x1 : ffffa7219cb7a5c0 x0 : 0000000000000000
[   44.664675] Call trace:
[   44.665274]  ftrace_set_filter_ip+0x24/0xa0
[   44.666327]  bpf_trampoline_update.constprop.0+0x428/0x4a0
[   44.667696]  __bpf_trampoline_link_prog+0xcc/0x1c0
[   44.668834]  bpf_trampoline_link_prog+0x40/0x64
[   44.669919]  bpf_tracing_prog_attach+0x120/0x490
[   44.671011]  link_create+0xe0/0x2b0
[   44.671869]  __sys_bpf+0x484/0xd30
[   44.672706]  __arm64_sys_bpf+0x30/0x40
[   44.673678]  invoke_syscall+0x78/0x100
[   44.674623]  el0_svc_common.constprop.0+0x4c/0xf4
[   44.675783]  do_el0_svc+0x38/0x4c
[   44.676624]  el0_svc+0x34/0x100
[   44.677429]  el0t_64_sync_handler+0x11c/0x150
[   44.678532]  el0t_64_sync+0x190/0x194
[   44.679439] Code: 2a0203f4 f90013f5 2a0303f5 f9001fe1 (f9400800)
[   44.680959] ---[ end trace 0000000000000000 ]---
[   44.682111] Kernel panic - not syncing: Oops: Fatal exception
[   44.683488] SMP: stopping secondary CPUs
[   44.684551] Kernel Offset: 0x2721948e0000 from 0xffff800008000000
[   44.686095] PHYS_OFFSET: 0xfffff4a380000000
[   44.687144] CPU features: 0x010,00022811,19001080
[   44.688308] Memory Limit: none
[   44.689082] ---[ end Kernel panic - not syncing: Oops: Fatal exception ]---

It's caused by a NULL tr->fops passed to ftrace_set_filter_ip(). tr->fops
is initialized to NULL and is assigned to an allocated memory address if
CONFIG_DYNAMIC_FTRACE_WITH_DIRECT_CALLS is enabled. Since there is no
direct call on arm64 yet, the config can't be enabled.

To fix it, call ftrace_set_filter_ip() only if tr->fops is not NULL.

Fixes: 00963a2e75a8 ("bpf: Support bpf_trampoline on functions with IPMODIFY (e.g. livepatch)")
Reported-by: Bruno Goncalves <bgoncalv@redhat.com>
Signed-off-by: Xu Kuohai <xukuohai@huawei.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Tested-by: Bruno Goncalves <bgoncalv@redhat.com>
Acked-by: Song Liu <songliubraving@fb.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/bpf/20220728114048.3540461-1-xukuohai@huaweicloud.com
2 years agobpf: Fix test_progs -j error with fentry/fexit tests
Song Liu [Fri, 29 Jul 2022 19:41:06 +0000 (12:41 -0700)]
bpf: Fix test_progs -j error with fentry/fexit tests

When multiple threads are attaching/detaching fentry/fexit programs to
the same trampoline, we may call register_fentry on the same trampoline
twice: register_fentry(), unregister_fentry(), then register_fentry again.
This causes ftrace_set_filter_ip() for the same ip on tr->fops twice,
which leaves duplicated ip in tr->fops. The extra ip is not cleaned up
properly on unregister and thus causes failures with further register in
register_ftrace_direct_multi():

register_ftrace_direct_multi()
{
        ...
        for (i = 0; i < size; i++) {
                hlist_for_each_entry(entry, &hash->buckets[i], hlist) {
                        if (ftrace_find_rec_direct(entry->ip))
                                goto out_unlock;
                }
        }
        ...
}

This can be triggered with parallel fentry/fexit tests with test_progs:

  ./test_progs -t fentry,fexit -j

Fix this by resetting tr->fops in ftrace_set_filter_ip(), so that there
will never be duplicated entries in tr->fops.

Fixes: 00963a2e75a8 ("bpf: Support bpf_trampoline on functions with IPMODIFY (e.g. livepatch)")
Reported-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Song Liu <song@kernel.org>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20220729194106.1207472-1-song@kernel.org
2 years agoselftests/bpf: Bump internal send_signal/send_signal_tracepoint timeout
Daniel Müller [Wed, 27 Jul 2022 18:29:55 +0000 (18:29 +0000)]
selftests/bpf: Bump internal send_signal/send_signal_tracepoint timeout

The send_signal/send_signal_tracepoint is pretty flaky, with at least
one failure in every ten runs on a few attempts I've tried it:
  > test_send_signal_common:PASS:pipe_c2p 0 nsec
  > test_send_signal_common:PASS:pipe_p2c 0 nsec
  > test_send_signal_common:PASS:fork 0 nsec
  > test_send_signal_common:PASS:skel_open_and_load 0 nsec
  > test_send_signal_common:PASS:skel_attach 0 nsec
  > test_send_signal_common:PASS:pipe_read 0 nsec
  > test_send_signal_common:PASS:pipe_write 0 nsec
  > test_send_signal_common:PASS:reading pipe 0 nsec
  > test_send_signal_common:PASS:reading pipe error: size 0 0 nsec
  > test_send_signal_common:FAIL:incorrect result unexpected incorrect result: actual 48 != expected 50
  > test_send_signal_common:PASS:pipe_write 0 nsec
  > #139/1   send_signal/send_signal_tracepoint:FAIL

The reason does not appear to be a correctness issue in the strict
sense. Rather, we merely do not receive the signal we are waiting for
within the provided timeout.
Let's bump the timeout by a factor of ten. With that change I have not
been able to reproduce the failure in 150+ iterations. I am also sneaking
in a small simplification to the test_progs test selection logic.

Signed-off-by: Daniel Müller <deso@posteo.net>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20220727182955.4044988-1-deso@posteo.net
2 years agobpftool: Don't try to return value from void function in skeleton
Jörn-Thorben Hinz [Tue, 26 Jul 2022 13:32:03 +0000 (15:32 +0200)]
bpftool: Don't try to return value from void function in skeleton

A skeleton generated by bpftool previously contained a return followed
by an expression in OBJ_NAME__detach(), which has return type void. This
did not hurt, the bpf_object__detach_skeleton() called there returns
void itself anyway, but led to a warning when compiling with e.g.
-pedantic.

Signed-off-by: Jörn-Thorben Hinz <jthinz@mailbox.tu-berlin.de>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Reviewed-by: Quentin Monnet <quentin@isovalent.com>
Link: https://lore.kernel.org/bpf/20220726133203.514087-1-jthinz@mailbox.tu-berlin.de
2 years agobpftool: Replace sizeof(arr)/sizeof(arr[0]) with ARRAY_SIZE macro
Rongguang Wei [Tue, 26 Jul 2022 09:30:45 +0000 (17:30 +0800)]
bpftool: Replace sizeof(arr)/sizeof(arr[0]) with ARRAY_SIZE macro

Use the ARRAY_SIZE macro and make the code more compact.

Signed-off-by: Rongguang Wei <weirongguang@kylinos.cn>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Reviewed-by: Quentin Monnet <quentin@isovalent.com>
Link: https://lore.kernel.org/bpf/20220726093045.3374026-1-clementwei90@163.com
2 years agobpf: btf: Fix vsnprintf return value check
Fedor Tokarev [Mon, 11 Jul 2022 21:13:17 +0000 (23:13 +0200)]
bpf: btf: Fix vsnprintf return value check

vsnprintf returns the number of characters which would have been written if
enough space had been available, excluding the terminating null byte. Thus,
the return value of 'len_left' means that the last character has been
dropped.

Signed-off-by: Fedor Tokarev <ftokarev@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Alan Maguire <alan.maguire@oracle.com>
Link: https://lore.kernel.org/bpf/20220711211317.GA1143610@laptop
2 years agoMerge branch 'mtk_eth_soc-xdp-multi-frame'
David S. Miller [Fri, 29 Jul 2022 11:18:10 +0000 (12:18 +0100)]
Merge branch 'mtk_eth_soc-xdp-multi-frame'

Lorenzo Bianconi says:

====================
mtk_eth_soc: introduce xdp multi-frag support

Convert mtk_eth_soc driver to xdp_return_frame_bulk APIs.
===================

Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet: ethernet: mtk_eth_soc: add xdp tx return bulking support
Lorenzo Bianconi [Wed, 27 Jul 2022 21:20:52 +0000 (23:20 +0200)]
net: ethernet: mtk_eth_soc: add xdp tx return bulking support

Convert mtk_eth_soc driver to xdp_return_frame_bulk APIs.

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet: ethernet: mtk_eth_soc: introduce xdp multi-frag support
Lorenzo Bianconi [Wed, 27 Jul 2022 21:20:51 +0000 (23:20 +0200)]
net: ethernet: mtk_eth_soc: introduce xdp multi-frag support

Add the capability to map non-linear xdp frames in XDP_TX and
ndo_xdp_xmit callback.

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet: ethernet: mtk_eth_soc: introduce mtk_xdp_frame_map utility routine
Lorenzo Bianconi [Wed, 27 Jul 2022 21:20:50 +0000 (23:20 +0200)]
net: ethernet: mtk_eth_soc: introduce mtk_xdp_frame_map utility routine

This is a preliminary patch to add xdp multi-frag support to mtk_eth_soc
driver

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoMerge branch 'seg6-headend-reduced'
David S. Miller [Fri, 29 Jul 2022 11:14:03 +0000 (12:14 +0100)]
Merge branch 'seg6-headend-reduced'

Andrea Mayer says:

====================
seg6: add support for SRv6 Headend Reduced

This patchset adds support for SRv6 Headend behavior with Reduced
Encapsulation. It introduces the H.Encaps.Red and H.L2Encaps.Red versions
of the SRv6 H.Encaps and H.L2Encaps behaviors, according to RFC 8986 [1].

In details, the patchset is made of:
 - patch 1/4: add support for SRv6 H.Encaps.Red behavior;
 - Patch 2/4: add support for SRv6 H.L2Encaps.Red behavior;
 - patch 2/4: add selftest for SRv6 H.Encaps.Red behavior;
 - patch 3/4: add selftest for SRv6 H.L2Encaps.Red behavior.

The corresponding iproute2 patch for supporting SRv6 H.Encaps.Red and
H.L2Encaps.Red behaviors is provided in a separated patchset.

[1] - https://datatracker.ietf.org/doc/html/rfc8986

V4 -> v5:
 - Fix skb checksum for SRH Reduced encapsulation/insertion;

 - Improve selftests by:
      i) adding a random suffix to network namespaces;
     ii) creating net devices directly into network namespaces;
    iii) using trap EXIT command to properly clean up selftest networks.

 Thanks to Paolo Abeni.

v3 -> v4:
 - Add selftests to the Makefile, thanks to Jakub Kicinski.

v2 -> v3:
 - Keep SRH when HMAC TLV is present;

 - Split the support for H.Encaps.Red and H.L2Encaps.Red behaviors in two
   patches (respectively, patch 1/4 and patch 2/4);

 - Add selftests for SRv6 H.Encaps.Red and H.L2Encaps.Red.

v1 -> v2:
 - Fixed sparse warnings;

 - memset now uses sizeof() instead of hardcoded value;

 - Removed EXPORT_SYMBOL_GPL.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoselftests: seg6: add selftest for SRv6 H.L2Encaps.Red behavior
Andrea Mayer [Wed, 27 Jul 2022 18:54:08 +0000 (20:54 +0200)]
selftests: seg6: add selftest for SRv6 H.L2Encaps.Red behavior

This selftest is designed for testing the H.L2Encaps.Red behavior. It
instantiates a virtual network composed of several nodes: hosts and SRv6
routers. Each node is realized using a network namespace that is
properly interconnected to others through veth pairs.
The test considers SRv6 routers implementing a L2 VPN leveraged by hosts
for communicating with each other. Such routers make use of the SRv6
H.L2Encaps.Red behavior for applying SRv6 policies to L2 traffic coming
from hosts.

The correct execution of the behavior is verified through reachability
tests carried out between hosts belonging to the same VPN.

Signed-off-by: Andrea Mayer <andrea.mayer@uniroma2.it>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoselftests: seg6: add selftest for SRv6 H.Encaps.Red behavior
Andrea Mayer [Wed, 27 Jul 2022 18:54:07 +0000 (20:54 +0200)]
selftests: seg6: add selftest for SRv6 H.Encaps.Red behavior

This selftest is designed for testing the H.Encaps.Red behavior. It
instantiates a virtual network composed of several nodes: hosts and SRv6
routers. Each node is realized using a network namespace that is
properly interconnected to others through veth pairs.
The test considers SRv6 routers implementing L3 VPNs leveraged by hosts
for communicating with each other. Such routers make use of the SRv6
H.Encaps.Red behavior for applying SRv6 policies to L3 traffic coming
from hosts.

The correct execution of the behavior is verified through reachability
tests carried out between hosts belonging to the same VPN.

Signed-off-by: Andrea Mayer <andrea.mayer@uniroma2.it>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoseg6: add support for SRv6 H.L2Encaps.Red behavior
Andrea Mayer [Wed, 27 Jul 2022 18:54:06 +0000 (20:54 +0200)]
seg6: add support for SRv6 H.L2Encaps.Red behavior

The SRv6 H.L2Encaps.Red behavior described in [1] is an optimization of
the SRv6 H.L2Encaps behavior [2].

H.L2Encaps.Red reduces the length of the SRH by excluding the first
segment (SID) in the SRH of the pushed IPv6 header. The first SID is
only placed in the IPv6 Destination Address field of the pushed IPv6
header.
When the SRv6 Policy only contains one SID the SRH is omitted, unless
there is an HMAC TLV to be carried.

[1] - https://datatracker.ietf.org/doc/html/rfc8986#section-5.4
[2] - https://datatracker.ietf.org/doc/html/rfc8986#section-5.3

Signed-off-by: Andrea Mayer <andrea.mayer@uniroma2.it>
Signed-off-by: Anton Makarov <anton.makarov11235@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoseg6: add support for SRv6 H.Encaps.Red behavior
Andrea Mayer [Wed, 27 Jul 2022 18:54:05 +0000 (20:54 +0200)]
seg6: add support for SRv6 H.Encaps.Red behavior

The SRv6 H.Encaps.Red behavior described in [1] is an optimization of
the SRv6 H.Encaps behavior [2].

H.Encaps.Red reduces the length of the SRH by excluding the first
segment (SID) in the SRH of the pushed IPv6 header. The first SID is
only placed in the IPv6 Destination Address field of the pushed IPv6
header.
When the SRv6 Policy only contains one SID the SRH is omitted, unless
there is an HMAC TLV to be carried.

[1] - https://datatracker.ietf.org/doc/html/rfc8986#section-5.2
[2] - https://datatracker.ietf.org/doc/html/rfc8986#section-5.1

Signed-off-by: Andrea Mayer <andrea.mayer@uniroma2.it>
Signed-off-by: Anton Makarov <anton.makarov11235@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agovmxnet3: do not reschedule napi for rx processing
Ronak Doshi [Wed, 27 Jul 2022 17:30:37 +0000 (10:30 -0700)]
vmxnet3: do not reschedule napi for rx processing

Commit '2c5a5748105a ("vmxnet3: add support for out of order rx
completion")' added support for out of order rx completion. Within
that patch, an enhancement was done to reschedule napi for processing
rx completions.

However, it can lead to missing an interrupt. So, this patch reverts
that part of the code.

Fixes: 2c5a5748105a ("vmxnet3: add support for out of order rx completion")
Signed-off-by: Ronak Doshi <doshir@vmware.com>
Acked-by: Guolin Yang <gyang@vmware.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoDocumentation: Describe net.ipv4.tcp_reflect_tos.
Guillaume Nault [Wed, 27 Jul 2022 11:18:21 +0000 (13:18 +0200)]
Documentation: Describe net.ipv4.tcp_reflect_tos.

The tcp_reflect_tos option was introduced in Linux 5.10 but was still
undocumented.

Signed-off-by: Guillaume Nault <gnault@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet/af_packet: check len when min_header_len equals to 0
Zhengchao Shao [Wed, 27 Jul 2022 09:33:12 +0000 (17:33 +0800)]
net/af_packet: check len when min_header_len equals to 0

User can use AF_PACKET socket to send packets with the length of 0.
When min_header_len equals to 0, packet_snd will call __dev_queue_xmit
to send packets, and sock->type can be any type.

Reported-by: syzbot+5ea725c25d06fb9114c4@syzkaller.appspotmail.com
Fixes: fd1894224407 ("bpf: Don't redirect packets with invalid pkt_len")
Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoMerge branch 'mlxsw-ptp-spectrum-2'
David S. Miller [Fri, 29 Jul 2022 10:02:24 +0000 (11:02 +0100)]
Merge branch 'mlxsw-ptp-spectrum-2'

Ido Schimmel says:

====================
mlxsw: Add PTP support for Spectrum-2 and newer ASICs

This patchset adds PTP support for Spectrum-{2,3,4} switch ASICs. They
all act largely the same with respect to PTP except for a workaround
implemented for Spectrum-{2,3} in patch #6.

Spectrum-2 and newer ASICs essentially implement a transparent clock
between all the switch ports, including the CPU port. The hardware will
generate the UTC time stamp for transmitted / received packets at the
CPU port, but will compensate for forwarding delays in the ASIC by
adjusting the correction field in the PTP header (for PTP events) at the
ingress and egress ports.

Specifically, the hardware will subtract the current time stamp from the
correction field at the ingress port and will add the current time stamp
to the correction field at the egress port. For the purpose of an
ordinary or boundary clock (this patchset), the correction field will
always be adjusted between the CPU port and one of the front panel
ports, but never between two front panel ports.

Patchset overview:

Patch #1 extracts a helper to configure traps for PTP packets (event and
general messages). The helper is shared between all Spectrum
generations.

Patch #2 transitions Spectrum-2 and newer ASICs to use a different
format of Tx completions that includes the UTC time stamp of transmitted
packets.

Patch #3 adds basic initialization required for Spectrum-2 PTP support.
It mainly invokes the helper from patch #1.

Patch #4 adds helpers to read the UTC time (seconds and nanoseconds)
from the device over memory-mapped I/O instead of going through firmware
which is slower and therefore inaccurate. The helpers will be used to
implement various PHC operations (e.g., gettimex64) and to construct the
full UTC time stamp from the truncated one reported over Tx / Rx
completions.

Patch #5 implements the various PHC operations.

Patch #6 implements the previously described workaround for
Spectrum-{2,3}.

Patch #7 adds the ability to report a hardware time stamp for a received
/ transmitted packet based off the associated Rx / Tx completion that
includes a truncated UTC time stamp.

Patches #8 and #9 implement support for the SIOCGHWTSTAMP /
SIOCSHWTSTAMP ioctls and the get_ts_info ethtool callback, respectively.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agomlxsw: spectrum: Support ethtool 'get_ts_info' callback in Spectrum-2
Danielle Ratson [Wed, 27 Jul 2022 06:23:28 +0000 (09:23 +0300)]
mlxsw: spectrum: Support ethtool 'get_ts_info' callback in Spectrum-2

The 'get_ts_info' callback is used for obtaining information about
time stamping and PTP hardware clock capabilities of a network device.

The existing function of Spectrum-1 is used to advertise the PHC
capabilities and the supported RX and TX filters. Implement a similar
function for Spectrum-2, expose that the supported 'rx_filters' are all
PTP event packets, as for these packets the driver fills the time stamp
from the CQE in the SKB.

In the future, mlxsw driver will be extended to support one-step PTP in
Spectrum-2 and newer ASICs. Then additional 'tx_types' will be supported.

Signed-off-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: Amit Cohen <amcohen@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agomlxsw: spectrum_ptp: Support SIOCGHWTSTAMP, SIOCSHWTSTAMP ioctls
Danielle Ratson [Wed, 27 Jul 2022 06:23:27 +0000 (09:23 +0300)]
mlxsw: spectrum_ptp: Support SIOCGHWTSTAMP, SIOCSHWTSTAMP ioctls

The SIOCSHWTSTAMP ioctl configures HW timestamping on a given port. In
Spectrum-2 and above, each packet gets time stamp by default, but in
order to provide an accurate time stamp, software should configure to
update the correction field. In addition, the PTP traps are not enabled
by default, software should enable it per port or for all ports.

The switch behaves like a transparent clock between CPU port and each
front panel port. If ingress correction is set on a port for a given packet
type, then when such a packet is received via the port, the current time
stamp is subtracted from the correction field. If egress correction is set
on a port for a given packet type, then when such a packet is transmitted
via the port, the current time stamp is added to the correction field.

The result is that as the packet ingresses through a port with ingress
correction enabled, and egresses through a port with egress correction
enabled, the PTP correction field is updated to reflect the time that the
packet spent in the ASIC.

This can be used to update the correction field of trapped packets by
enabling ingress correction on a port where time stamping was enabled,
and egress correction on the CPU port. Similarly, for packets transmitted
from the host, ingress correction should be enabled on the CPU port, and
egress correction on a front-panel port.

However, since the correction fields will be updated for all PTP packets
crossing the CPU port, in order not to mangle the correction field, the
front panel port involved in the packet transfer must have the
corresponding correction enabled as well.

Therefore, when HW timestamping is enabled on at least one port, we have
to configure hardware to update the correction field and trap PTP event
packets on all ports.

Add reference count as part of 'struct mlxsw_sp_ptp_state', to maintain
how many ports use HW timestamping. Handle the correction field
configuration only when the first port enables time stamping and when the
last port disables time stamping. Store the configuration as part of
'struct mlxsw_sp_ptp_state', as it is global for all ports.

The SIOCGHWTSTAMP ioctl is a getter for the current configuration,
implement it and use the global configuration.

Signed-off-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: Amit Cohen <amcohen@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agomlxsw: spectrum: Support time stamping on Spectrum-2
Danielle Ratson [Wed, 27 Jul 2022 06:23:26 +0000 (09:23 +0300)]
mlxsw: spectrum: Support time stamping on Spectrum-2

As opposed to Spectrum-1, in which time stamps arrive through a pair of
dedicated events into a queue and later are being matched to the
corresponding packets, in Spectrum-2 we are reading the time stamps
directly from the CQE. Software can get the time stamp in UTC format
using CQEv2.

Add a time stamp field to 'struct mlxsw_skb_cb'. In
mlxsw_pci_cqe_{rdq,sdq}_handle() extract the time stamp from the CQE into
the new time stamp field. Note that the time stamp in the CQE is
represented by 38 bits, which is a short representation of UTC time.
Software should create the full time stamp using the global UTC clock.
Read UTC clock from hardware only for PTP packets which were trapped to CPU
with PTP0 trap ID (event packets).

Use the time stamp from the SKB when packet is received or transmitted.

Signed-off-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: Amit Cohen <amcohen@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agomlxsw: Send PTP packets as data packets to overcome a limitation
Danielle Ratson [Wed, 27 Jul 2022 06:23:25 +0000 (09:23 +0300)]
mlxsw: Send PTP packets as data packets to overcome a limitation

In Spectrum-2 and Spectrum-3, the correction field of PTP packets which are
sent as control packets is not updated at egress port. To overcome this
limitation, PTP packets which require time stamp, should be sent as data
packets with the following details:
1. FID valid = 1
2. FID value above the maximum FID
3. rx_router_port = 1

>From Spectrum-4 and on, this limitation will be solved.

Extend the function which handles TX header, in case that the packet is
a PTP packet, add TX header with type=data and all the above mentioned
requirements. Add operation as part of 'struct mlxsw_sp_ptp_ops', to be
able to separate the handling of PTP packets between different ASICs. Use
the data packet solution only for Spectrum-2 and Spectrum-3. Therefore, add
a dedicated operation structure for Spectrum-4, as it will be same to
Spectrum-2 in PTP implementation, just will not have the limitation of
control packets.

Signed-off-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: Amit Cohen <amcohen@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agomlxsw: spectrum_ptp: Add implementation for physical hardware clock operations
Danielle Ratson [Wed, 27 Jul 2022 06:23:24 +0000 (09:23 +0300)]
mlxsw: spectrum_ptp: Add implementation for physical hardware clock operations

Implement physical hardware clock operations. The main difference between
the existing operations of Spectrum-1 and the new operations of Spectrum-2
is the usage of UTC hardware clock instead of FRC.

Add support for init() and fini() functions for PTP clock in Spectrum-2.

Signed-off-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: Amit Cohen <amcohen@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agomlxsw: Query UTC sec and nsec PCI offsets and values
Danielle Ratson [Wed, 27 Jul 2022 06:23:23 +0000 (09:23 +0300)]
mlxsw: Query UTC sec and nsec PCI offsets and values

Query UTC sec and nsec PCI offsets during the pci_init(), to be able to
read UTC time later.

Implement functions to read UTC seconds and nanoseconds from the offset
which was read as part of initialization.

Signed-off-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: Amit Cohen <amcohen@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agomlxsw: spectrum_ptp: Add PTP initialization / finalization for Spectrum-2
Danielle Ratson [Wed, 27 Jul 2022 06:23:22 +0000 (09:23 +0300)]
mlxsw: spectrum_ptp: Add PTP initialization / finalization for Spectrum-2

Lay the groundwork for Spectrum-2 support. On Spectrum-2, the packets get
the time stamps from the CQE, which means that the time stamp is attached
to its packet.

Configure MTPTPT to set which message types should arrive under which
PTP trap. PTP0 will be used for event message types, which means that
the packets require time stamp. PTP1 will be used for other packets.

Note that in Spectrum-2, all packets contain time stamp by default. The two
types of traps (PTP0, PTP1) will be used to separate between PTP_EVENT
traps and PTP_GENERAL traps, so then the driver will fill the time stamp as
part of the SKB only for event message types.

Later the driver will enable the traps using 'MTPCPC.ptp_trap_en' bit.
Then, PTP packets start arriving through the PTP traps.

Currently, the structure 'mlxsw_sp2_ptp_state' contains only the common
structure, the next patches will extend it.

Signed-off-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: Amit Cohen <amcohen@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agomlxsw: Support CQEv2 for SDQ in Spectrum-2 and newer ASICs
Danielle Ratson [Wed, 27 Jul 2022 06:23:21 +0000 (09:23 +0300)]
mlxsw: Support CQEv2 for SDQ in Spectrum-2 and newer ASICs

Currently, Tx completions are reported using Completion Queue Element
version 1 (CQEv1). These elements do not contain the Tx time stamp,
which is fine as Spectrum-1 reads Tx time stamps via a dedicated FIFO
and Spectrum-2 does not currently support PTP.

In preparation for Spectrum-2 PTP support, use CQEv2 for Spectrum-2 and
newer ASICs, as this CQE format encodes the Tx time stamp.

Signed-off-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: Amit Cohen <amcohen@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agomlxsw: spectrum_ptp: Add helper functions to configure PTP traps
Amit Cohen [Wed, 27 Jul 2022 06:23:20 +0000 (09:23 +0300)]
mlxsw: spectrum_ptp: Add helper functions to configure PTP traps

MTPTPT register is used to set which message types should arrive under
which PTP trap. Currently, PTP0 is used for event message types, which
means that the packets require time stamp. PTP1 is used for other packets.

This configuration will be same for Spectrum-2 and newer ASICs. In
preparation for Spectrum-2 PTP support, add helper functions to
configure PTP traps and use them for Spectrum-1. These functions will be
used later also for Spectrum-2.

Signed-off-by: Amit Cohen <amcohen@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agodt-bindings: nfc: use spi-peripheral-props.yaml
Krzysztof Kozlowski [Wed, 27 Jul 2022 16:41:29 +0000 (18:41 +0200)]
dt-bindings: nfc: use spi-peripheral-props.yaml

Instead of listing directly properties typical for SPI peripherals,
reference the spi-peripheral-props.yaml schema.  This allows using all
properties typical for SPI-connected devices, even these which device
bindings author did not tried yet.

Remove the spi-* properties which now come via spi-peripheral-props.yaml
schema, except for the cases when device schema adds some constraints
like maximum frequency.

While changing additionalProperties->unevaluatedProperties, put it in
typical place, just before example DTS.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220727164130.385411-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agoMerge branch 'net-dsa-qca8k-code-split-for-qca8k'
Jakub Kicinski [Fri, 29 Jul 2022 05:24:41 +0000 (22:24 -0700)]
Merge branch 'net-dsa-qca8k-code-split-for-qca8k'

Christian Marangi says:

====================
net: dsa: qca8k: code split for qca8k

This is needed ad ipq4019 SoC have an internal switch that is
based on qca8k with very minor changes. The general function is equal.

Because of this we split the driver to common and specific code.

As the common function needs to be moved to a different file to be
reused, we had to convert every remaining user of qca8k_read/write/rmw
to regmap variant.
We had also to generilized the special handling for the ethtool_stats
function that makes use of the autocast mib. (ipq4019 will have a
different tagger and use mmio so it could be quicker to use mmio instead
of automib feature)
And we had to convert the regmap read/write to bulk implementation to
drop the special function that makes use of it. This will be compatible
with ipq4019 and at the same time permits normal switch to use the eth
mgmt way to send the entire ATU table read/write in one go.
====================

Link: https://lore.kernel.org/r/20220727113523.19742-1-ansuelsmth@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agonet: dsa: qca8k: move read_switch_id function to common code
Christian Marangi [Wed, 27 Jul 2022 11:35:23 +0000 (13:35 +0200)]
net: dsa: qca8k: move read_switch_id function to common code

The same function to read the switch id is used by drivers based on
qca8k family switch. Move them to common code to make them accessible
also by other drivers.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agonet: dsa: qca8k: move port LAG functions to common code
Christian Marangi [Wed, 27 Jul 2022 11:35:22 +0000 (13:35 +0200)]
net: dsa: qca8k: move port LAG functions to common code

The same port LAG functions are used by drivers based on qca8k family
switch. Move them to common code to make them accessible also by other
drivers.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agonet: dsa: qca8k: move port VLAN functions to common code
Christian Marangi [Wed, 27 Jul 2022 11:35:21 +0000 (13:35 +0200)]
net: dsa: qca8k: move port VLAN functions to common code

The same port VLAN functions are used by drivers based on qca8k family
switch. Move them to common code to make them accessible also by other
drivers.
Also drop exposing busy_wait and make it static.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agonet: dsa: qca8k: move port mirror functions to common code
Christian Marangi [Wed, 27 Jul 2022 11:35:20 +0000 (13:35 +0200)]
net: dsa: qca8k: move port mirror functions to common code

The same port mirror functions are used by drivers based on qca8k family
switch. Move them to common code to make them accessible also by other
drivers.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agonet: dsa: qca8k: move port FDB/MDB function to common code
Christian Marangi [Wed, 27 Jul 2022 11:35:19 +0000 (13:35 +0200)]
net: dsa: qca8k: move port FDB/MDB function to common code

The same port FDB/MDB function are used by drivers based on qca8k family
switch. Move them to common code to make them accessible also by other
drivers.
Also drop bulk read/write functions and make them static

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agonet: dsa: qca8k: move set age/MTU/port enable/disable functions to common code
Christian Marangi [Wed, 27 Jul 2022 11:35:18 +0000 (13:35 +0200)]
net: dsa: qca8k: move set age/MTU/port enable/disable functions to common code

The same set age, MTU and port enable/disable function are used by
driver based on qca8k family switch.
Move them to common code to make them accessible also by other drivers.
While at it also drop unnecessary qca8k_priv cast for void pointers.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agonet: dsa: qca8k: move bridge functions to common code
Christian Marangi [Wed, 27 Jul 2022 11:35:17 +0000 (13:35 +0200)]
net: dsa: qca8k: move bridge functions to common code

The same bridge functions are used by drivers based on qca8k family
switch. Move them to common code to make them accessible also by other
drivers.
While at it also drop unnecessary qca8k_priv cast for void pointers.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agonet: dsa: qca8k: move port set status/eee/ethtool stats function to common code
Christian Marangi [Wed, 27 Jul 2022 11:35:16 +0000 (13:35 +0200)]
net: dsa: qca8k: move port set status/eee/ethtool stats function to common code

The same logic to disable/enable port, set eee and get ethtool stats is
used by drivers based on qca8k family switch.
Move it to common code to make it accessible also by other drivers.
While at it also drop unnecessary qca8k_priv cast for void pointers.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agonet: dsa: qca8k: move mib init function to common code
Christian Marangi [Wed, 27 Jul 2022 11:35:15 +0000 (13:35 +0200)]
net: dsa: qca8k: move mib init function to common code

The same mib function is used by drivers based on qca8k family switch.
Move it to common code to make it accessible also by other drivers.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agonet: dsa: qca8k: move qca8k bulk read/write helper to common code
Christian Marangi [Wed, 27 Jul 2022 11:35:14 +0000 (13:35 +0200)]
net: dsa: qca8k: move qca8k bulk read/write helper to common code

The same ATU function are used by drivers based on qca8k family switch.
Move the bulk read/write helper to common code to declare these shared
ATU functions in common code.
These helper will be dropped when regmap correctly support bulk
read/write.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agonet: dsa: qca8k: move qca8k read/write/rmw and reg table to common code
Christian Marangi [Wed, 27 Jul 2022 11:35:13 +0000 (13:35 +0200)]
net: dsa: qca8k: move qca8k read/write/rmw and reg table to common code

The same reg table and read/write/rmw function are used by drivers
based on qca8k family switch.
Move them to common code to make it accessible also by other drivers.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agonet: dsa: qca8k: move mib struct to common code
Christian Marangi [Wed, 27 Jul 2022 11:35:12 +0000 (13:35 +0200)]
net: dsa: qca8k: move mib struct to common code

The same MIB struct is used by drivers based on qca8k family switch. Move
it to common code to make it accessible also by other drivers.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agonet: dsa: qca8k: make mib autocast feature optional
Christian Marangi [Wed, 27 Jul 2022 11:35:11 +0000 (13:35 +0200)]
net: dsa: qca8k: make mib autocast feature optional

Some switch may not support mib autocast feature and require the legacy
way of reading the regs directly.
Make the mib autocast feature optional and permit to declare support for
it using match_data struct in a dedicated qca8k_info_ops struct.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agonet: dsa: qca8k: cache match data to speed up access
Christian Marangi [Wed, 27 Jul 2022 11:35:10 +0000 (13:35 +0200)]
net: dsa: qca8k: cache match data to speed up access

Using of_device_get_match_data is expensive. Cache match data to speed
up access and rework user of match data to use the new cached value.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agofirewire: net: Make use of get_unaligned_be48(), put_unaligned_be48()
Andy Shevchenko [Tue, 26 Jul 2022 14:49:06 +0000 (17:49 +0300)]
firewire: net: Make use of get_unaligned_be48(), put_unaligned_be48()

Since we have a proper endianness converters for BE 48-bit data use
them.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20220726144906.5217-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agoamt: fix typo in comment
Ruffalo Lavoisier [Thu, 28 Jul 2022 03:28:54 +0000 (12:28 +0900)]
amt: fix typo in comment

Correct spelling on 'non-existent' in comment

Signed-off-by: Ruffalo Lavoisier <RuffaloLavoisier@gmail.com>
Link: https://lore.kernel.org/r/20220728032854.151180-1-RuffaloLavoisier@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agomlxsw: core_linecards: Remove duplicated include in core_linecard_dev.c
Yang Li [Wed, 27 Jul 2022 23:38:01 +0000 (07:38 +0800)]
mlxsw: core_linecards: Remove duplicated include in core_linecard_dev.c

Fix following includecheck warning:
./drivers/net/ethernet/mellanox/mlxsw/core_linecard_dev.c: linux/err.h is included more than once.

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Link: https://lore.kernel.org/r/20220727233801.23781-1-yang.lee@linux.alibaba.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agoselftests: net: dsa: Add a Makefile which installs the selftests
Martin Blumenstingl [Wed, 27 Jul 2022 19:16:42 +0000 (21:16 +0200)]
selftests: net: dsa: Add a Makefile which installs the selftests

Add a Makefile which takes care of installing the selftests in
tools/testing/selftests/drivers/net/dsa. This can be used to install all
DSA specific selftests and forwarding.config using the same approach as
for the selftests in tools/testing/selftests/net/forwarding.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Link: https://lore.kernel.org/r/20220727191642.480279-1-martin.blumenstingl@googlemail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agoMerge branch 'take-devlink-lock-on-mlx4-and-mlx5-callbacks'
Jakub Kicinski [Fri, 29 Jul 2022 04:58:49 +0000 (21:58 -0700)]
Merge branch 'take-devlink-lock-on-mlx4-and-mlx5-callbacks'

Moshe Shemesh says:

====================
Take devlink lock on mlx4 and mlx5 callbacks

Prepare mlx4 and mlx5 drivers to have all devlink callbacks called with
devlink instance locked. Change mlx4 driver to use devl_ API where
needed to have devlink reload callbacks locked. Change mlx5 driver to
use devl_ API where needed to have devlink reload and devlink health
callbacks locked.

As mlx5 is the only driver which needed changes to enable calling health
callbacks with devlink instance locked, this patchset also removes
DEVLINK_NL_FLAG_NO_LOCK flag from devlink health callbacks.

This patchset will be followed by a patchset that will remove
DEVLINK_NL_FLAG_NO_LOCK flag from devlink and will remove devlink_mutex.
====================

Link: https://lore.kernel.org/r/1659023630-32006-1-git-send-email-moshe@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agodevlink: Hold the instance lock in health callbacks
Moshe Shemesh [Thu, 28 Jul 2022 15:53:50 +0000 (18:53 +0300)]
devlink: Hold the instance lock in health callbacks

Let the core take the devlink instance lock around health callbacks and
remove the now redundant locking in the drivers.

Signed-off-by: Moshe Shemesh <moshe@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agonet/mlx5: Lock mlx5 devlink health recovery callback
Moshe Shemesh [Thu, 28 Jul 2022 15:53:49 +0000 (18:53 +0300)]
net/mlx5: Lock mlx5 devlink health recovery callback

Change devlink instance locks in mlx5 driver to have devlink health
recovery callback locked, while keeping all driver paths which lead to
devl_ API functions called by the driver locked.

Signed-off-by: Moshe Shemesh <moshe@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agonet/mlx4: Lock mlx4 devlink reload callback
Moshe Shemesh [Thu, 28 Jul 2022 15:53:48 +0000 (18:53 +0300)]
net/mlx4: Lock mlx4 devlink reload callback

Change devlink instance locks in mlx4 driver to have devlink reload
callback locked, while keeping all driver paths which leads to devl_ API
functions called by the mlx4 driver locked.

Signed-off-by: Moshe Shemesh <moshe@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agonet/mlx4: Use devl_ API for devlink port register / unregister
Moshe Shemesh [Thu, 28 Jul 2022 15:53:47 +0000 (18:53 +0300)]
net/mlx4: Use devl_ API for devlink port register / unregister

Use devl_ API to call devl_port_register() and devl_port_unregister()
instead of devlink_port_register() and devlink_port_unregister(). Add
devlink instance lock in mlx4 driver paths to these functions.

This will be used by the downstream patch to invoke mlx4 devlink reload
callbacks with devlink lock held.

Signed-off-by: Moshe Shemesh <moshe@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agonet/mlx4: Use devl_ API for devlink region create / destroy
Moshe Shemesh [Thu, 28 Jul 2022 15:53:46 +0000 (18:53 +0300)]
net/mlx4: Use devl_ API for devlink region create / destroy

Use devl_ API to call devl_region_create() and devl_region_destroy()
instead of devlink_region_create() and devlink_region_destroy().
Add devlink instance lock in mlx4 driver paths to these functions.

This will be used by the downstream patch to invoke mlx4 devlink reload
callbacks with devlink lock held.

Signed-off-by: Moshe Shemesh <moshe@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agonet/mlx5: Lock mlx5 devlink reload callbacks
Moshe Shemesh [Thu, 28 Jul 2022 15:53:45 +0000 (18:53 +0300)]
net/mlx5: Lock mlx5 devlink reload callbacks

Change devlink instance locks in mlx5 driver to have devlink reload
callbacks locked, while keeping all driver paths which lead to devl_ API
functions called by the driver locked.

Add mlx5_load_one_devl_locked() and mlx5_unload_one_devl_locked() which
are used by the paths which are already locked such as devlink reload
callbacks.

This patch makes the driver use devl_ API also for traps register as
these functions are called from the driver paths parallel to reload that
requires locking now.

Signed-off-by: Moshe Shemesh <moshe@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agonet/mlx5: Move fw reset unload to mlx5_fw_reset_complete_reload
Moshe Shemesh [Thu, 28 Jul 2022 15:53:44 +0000 (18:53 +0300)]
net/mlx5: Move fw reset unload to mlx5_fw_reset_complete_reload

Refactor fw reset code to have the unload driver part done on
mlx5_fw_reset_complete_reload(), so if it was called by the PF which
initiated the reload fw activate flow, the unload part will be handled
by the mlx5_devlink_reload_fw_activate() callback itself and not by the
reset event work.

This will be used by the downstream patch to invoke devlink reload
callbacks with devlink lock held.

Signed-off-by: Moshe Shemesh <moshe@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agonet: devlink: remove region snapshots list dependency on devlink->lock
Jiri Pirko [Thu, 28 Jul 2022 15:53:43 +0000 (18:53 +0300)]
net: devlink: remove region snapshots list dependency on devlink->lock

After mlx4 driver is converted to do locked reload,
devlink_region_snapshot_create() may be called from both locked and
unlocked context.

Note that in mlx4 region snapshots could be created on any command
failure. That can happen in any flow that involves commands to FW,
which means most of the driver flows.

So resolve this by removing dependency on devlink->lock for region
snapshots list consistency and introduce new mutex to ensure it.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agonet: devlink: remove region snapshot ID tracking dependency on devlink->lock
Jiri Pirko [Thu, 28 Jul 2022 15:53:42 +0000 (18:53 +0300)]
net: devlink: remove region snapshot ID tracking dependency on devlink->lock

After mlx4 driver is converted to do locked reload, functions to get/put
regions snapshot ID may be called from both locked and unlocked context.

So resolve this by removing dependency on devlink->lock for region
snapshot ID tracking by using internal xa_lock() to maintain
shapshot_ids xa_array consistency.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agoMerge branch 'add-framework-for-selftests-in-devlink'
Jakub Kicinski [Fri, 29 Jul 2022 04:57:11 +0000 (21:57 -0700)]
Merge branch 'add-framework-for-selftests-in-devlink'

Vikas Gupta says:

====================
add framework for selftests in devlink

Add support for selftests in the devlink framework.
Adds a callback .selftests_check and .selftests_run in devlink_ops.
User can add test(s) suite which is subsequently passed to the driver
and driver can opt for running particular tests based on its capabilities.

Patchset adds a flash based test for the bnxt_en driver.
====================

Link: https://lore.kernel.org/r/20220727165721.37959-1-vikas.gupta@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agobnxt_en: implement callbacks for devlink selftests
vikas [Wed, 27 Jul 2022 16:57:21 +0000 (22:27 +0530)]
bnxt_en: implement callbacks for devlink selftests

Add callbacks
=============
.selftest_check: returns true for flash selftest.
.selftest_run: runs a flash selftest.

Also, refactor NVM APIs so that they can be
used with devlink and ethtool both.

Signed-off-by: Vikas Gupta <vikas.gupta@broadcom.com>
Reviewed-by: Andy Gospodarek <gospo@broadcom.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agodevlink: introduce framework for selftests
Vikas Gupta [Wed, 27 Jul 2022 16:57:20 +0000 (22:27 +0530)]
devlink: introduce framework for selftests

Add a framework for running selftests.
Framework exposes devlink commands and test suite(s) to the user
to execute and query the supported tests by the driver.

Below are new entries in devlink_nl_ops
devlink_nl_cmd_selftests_show_doit/dumpit: To query the supported
selftests by the drivers.
devlink_nl_cmd_selftests_run: To execute selftests. Users can
provide a test mask for executing group tests or standalone tests.

Documentation/networking/devlink/ path is already part of MAINTAINERS &
the new files come under this path. Hence no update needed to the
MAINTAINERS

Signed-off-by: Vikas Gupta <vikas.gupta@broadcom.com>
Reviewed-by: Andy Gospodarek <gospo@broadcom.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agoMerge branch 'mlx5e-use-tls-tx-pool-to-improve-connection-rate'
Jakub Kicinski [Fri, 29 Jul 2022 04:50:57 +0000 (21:50 -0700)]
Merge branch 'mlx5e-use-tls-tx-pool-to-improve-connection-rate'

Tariq Toukan says:

====================
mlx5e use TLS TX pool to improve connection rate

To offload encryption operations, the mlx5 device maintains state and
keeps track of every kTLS device-offloaded connection.  Two HW objects
are used per TX context of a kTLS offloaded connection: a. Transport
interface send (TIS) object, to reach the HW context.  b. Data Encryption
Key (DEK) to perform the crypto operations.

These two objects are created and destroyed per TLS TX context, via FW
commands.  In total, 4 FW commands are issued per TLS TX context, which
seriously limits the connection rate.

In this series, we aim to save creation and destroy of TIS objects by
recycling them.  Upon recycling of a TIS, the HW still needs to be
notified for the re-mapping between a TIS and a context. This is done by
posting WQEs via an SQ, significantly faster API than the FW command
interface.

A pool is used for recycling. The pool dynamically interacts to the load
and connection rate, growing and shrinking accordingly.

Saving the TIS FW commands per context increases connection rate by ~42%,
from 11.6K to 16.5K connections per sec.

Connection rate is still limited by FW bottleneck due to the remaining
per context FW commands (DEK create/destroy). This will soon be addressed
in a followup series.  By combining the two series, the FW bottleneck
will be released, and a significantly higher (about 100K connections per
sec) kTLS TX device-offloaded connection rate is reached.
====================

Link: https://lore.kernel.org/r/20220727094346.10540-1-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agonet/mlx5e: kTLS, Dynamically re-size TX recycling pool
Tariq Toukan [Wed, 27 Jul 2022 09:43:46 +0000 (12:43 +0300)]
net/mlx5e: kTLS, Dynamically re-size TX recycling pool

Let the TLS TX recycle pool be more flexible in size, by continuously
and dynamically allocating and releasing HW resources in response to
changes in the connections rate and load.

Allocate and release pool entries in bulks (16). Use a workqueue to
release/allocate in the background. Allocate a new bulk when the pool
size goes lower than the low threshold (1K). Symmetric operation is done
when the pool size gets greater than the upper threshold (4K).

Every idle pool entry holds: 1 TIS, 1 DEK (HW resources), in addition to
~100 bytes in host memory.

Start with an empty pool to minimize memory and HW resources waste for
non-TLS users that have the device-offload TLS enabled.

Upon a new request, in case the pool is empty, do not wait for a whole bulk
allocation to complete.  Instead, trigger an instant allocation of a single
resource to reduce latency.

Performance tests:
Before: 11,684 CPS
After:  16,556 CPS

Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agonet/mlx5e: kTLS, Recycle objects of device-offloaded TLS TX connections
Tariq Toukan [Wed, 27 Jul 2022 09:43:45 +0000 (12:43 +0300)]
net/mlx5e: kTLS, Recycle objects of device-offloaded TLS TX connections

The transport interface send (TIS) object is responsible for performing
all transport related operations of the transmit side.  The ConnectX HW
uses a TIS object to save and access the TLS crypto information and state
of an offloaded TX kTLS connection.

Before this patch, we used to create a new TIS per connection and destroy
it once it’s closed. Every create and destroy of a TIS is a FW command.

Same applies for the private TLS context, where we used to dynamically
allocate and free it per connection.

Resources recycling reduce the impact of the allocation/free operations
and helps speeding up the connection rate.

In this feature we maintain a pool of TX objects and use it to recycle
the resources instead of re-creating them per connection.

A cached TIS popped from the pool is updated to serve the new connection
via the fast-path HW interface, updating the tls static and progress
params. This is a very fast operation, significantly faster than FW
commands.

On recycling, a WQE fence is required after the context params change.
This guarantees that the data is sent after the context has been
successfully updated in hardware, and that the context modification
doesn't interfere with existing traffic.

Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Gal Pressman <gal@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agonet/mlx5e: kTLS, Take stats out of OOO handler
Tariq Toukan [Wed, 27 Jul 2022 09:43:44 +0000 (12:43 +0300)]
net/mlx5e: kTLS, Take stats out of OOO handler

Let the caller of mlx5e_ktls_tx_handle_ooo() take care of updating the
stats, according to the returned value.  As the switch/case blocks are
already there, this change saves unnecessary branches in the handler.

Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Gal Pressman <gal@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agonet/mlx5e: kTLS, Introduce TLS-specific create TIS
Tariq Toukan [Wed, 27 Jul 2022 09:43:43 +0000 (12:43 +0300)]
net/mlx5e: kTLS, Introduce TLS-specific create TIS

TLS TIS objects have a defined role in mapping and reaching the HW TLS
contexts.  Some standard TIS attributes (like LAG port affinity) are
not relevant for them.

Use a dedicated TLS TIS create function instead of the generic
mlx5e_create_tis.

Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Gal Pressman <gal@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agonet/tls: Multi-threaded calls to TX tls_dev_del
Tariq Toukan [Wed, 27 Jul 2022 09:43:42 +0000 (12:43 +0300)]
net/tls: Multi-threaded calls to TX tls_dev_del

Multiple TLS device-offloaded contexts can be added in parallel via
concurrent calls to .tls_dev_add, while calls to .tls_dev_del are
sequential in tls_device_gc_task.

This is not a sustainable behavior. This creates a rate gap between add
and del operations (addition rate outperforms the deletion rate).  When
running for enough time, the TLS device resources could get exhausted,
failing to offload new connections.

Replace the single-threaded garbage collector work with a per-context
alternative, so they can be handled on several cores in parallel. Use
a new dedicated destruct workqueue for this.

Tested with mlx5 device:
Before: 22141 add/sec,   103 del/sec
After:  11684 add/sec, 11684 del/sec

Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agonet/tls: Perform immediate device ctx cleanup when possible
Tariq Toukan [Wed, 27 Jul 2022 09:43:41 +0000 (12:43 +0300)]
net/tls: Perform immediate device ctx cleanup when possible

TLS context destructor can be run in atomic context. Cleanup operations
for device-offloaded contexts could require access and interaction with
the device callbacks, which might sleep. Hence, the cleanup of such
contexts must be deferred and completed inside an async work.

For all others, this is not necessary, as cleanup is atomic. Invoke
cleanup immediately for them, avoiding queueing redundant gc work.

Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agotls: rx: Fix unsigned comparison with less than zero
Yang Li [Thu, 28 Jul 2022 03:10:19 +0000 (11:10 +0800)]
tls: rx: Fix unsigned comparison with less than zero

The return from the call to tls_rx_msg_size() is int, it can be
a negative error code, however this is being assigned to an
unsigned long variable 'sz', so making 'sz' an int.

Eliminate the following coccicheck warning:
./net/tls/tls_strp.c:211:6-8: WARNING: Unsigned expression compared with zero: sz < 0

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Link: https://lore.kernel.org/r/20220728031019.32838-1-yang.lee@linux.alibaba.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agoMerge branch 'tls-rx-follow-ups-to-rx-work'
Jakub Kicinski [Fri, 29 Jul 2022 04:50:02 +0000 (21:50 -0700)]
Merge branch 'tls-rx-follow-ups-to-rx-work'

Jakub Kicinski says:

====================
tls: rx: follow ups to rx work

A selection of unrelated changes. First some selftest polishing.
Next a change to rcvtimeo handling for locking based on an exchange
with Eric. Follow up to Paolo's comments from yesterday. Last but
not least a fix to a false positive warning, turns out I've been
testing with DEBUG_NET=n this whole time.
====================

Link: https://lore.kernel.org/r/20220727031524.358216-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agotls: rx: fix the false positive warning
Jakub Kicinski [Wed, 27 Jul 2022 03:15:24 +0000 (20:15 -0700)]
tls: rx: fix the false positive warning

I went too far in the accessor conversion, we can't use tls_strp_msg()
after decryption because the message may not be ready. What we care
about on this path is that the output skb is detached, i.e. we didn't
somehow just turn around and used the input skb with its TCP data
still attached. So look at the anchor directly.

Fixes: 84c61fe1a75b ("tls: rx: do not use the standard strparser")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agotls: strp: rename and multithread the workqueue
Jakub Kicinski [Wed, 27 Jul 2022 03:15:23 +0000 (20:15 -0700)]
tls: strp: rename and multithread the workqueue

Paolo points out that there seems to be no strong reason strparser
users a single threaded workqueue. Perhaps there were some performance
or pinning considerations? Since we don't know (and it's the slow path)
let's default to the most natural, multi-threaded choice.

Also rename the workqueue to "tls-".

Suggested-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agotls: rx: don't consider sock_rcvtimeo() cumulative
Jakub Kicinski [Wed, 27 Jul 2022 03:15:22 +0000 (20:15 -0700)]
tls: rx: don't consider sock_rcvtimeo() cumulative

Eric indicates that restarting rcvtimeo on every wait may be fine.
I thought that we should consider it cumulative, and made
tls_rx_reader_lock() return the remaining timeo after acquiring
the reader lock.

tls_rx_rec_wait() gets its timeout passed in by value so it
does not keep track of time previously spent.

Make the lock waiting consistent with tls_rx_rec_wait() - don't
keep track of time spent.

Read the timeo fresh in tls_rx_rec_wait().
It's unclear to me why callers are supposed to cache the value.

Link: https://lore.kernel.org/all/CANn89iKcmSfWgvZjzNGbsrndmCch2HC_EPZ7qmGboDNaWoviNQ@mail.gmail.com/
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agoselftests: tls: handful of memrnd() and length checks
Jakub Kicinski [Wed, 27 Jul 2022 03:15:21 +0000 (20:15 -0700)]
selftests: tls: handful of memrnd() and length checks

Add a handful of memory randomizations and precise length checks.
Nothing is really broken here, I did this to increase confidence
when debugging. It does fix a GCC warning, tho. Apparently GCC
recognizes that memory needs to be initialized for send() but
does not recognize that for write().

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agonet: usb: delete extra space and tab in blank line
Xie Shaowen [Wed, 27 Jul 2022 08:12:53 +0000 (16:12 +0800)]
net: usb: delete extra space and tab in blank line

delete extra space and tab in blank line, there is no functional change.

Signed-off-by: Xie Shaowen <studentxswpy@163.com>
Link: https://lore.kernel.org/r/20220727081253.3043941-1-studentxswpy@163.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Jakub Kicinski [Fri, 29 Jul 2022 01:21:16 +0000 (18:21 -0700)]
Merge git://git./linux/kernel/git/netdev/net

No conflicts.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agolibbpf: Support PPC in arch_specific_syscall_pfx
Daniel Müller [Thu, 28 Jul 2022 22:23:45 +0000 (22:23 +0000)]
libbpf: Support PPC in arch_specific_syscall_pfx

Commit 708ac5bea0ce ("libbpf: add ksyscall/kretsyscall sections support
for syscall kprobes") added the arch_specific_syscall_pfx() function,
which returns a string representing the architecture in use. As it turns
out this function is currently not aware of Power PC, where NULL is
returned. That's being flagged by the libbpf CI system, which builds for
ppc64le and the compiler sees a NULL pointer being passed in to a %s
format string.
With this change we add representations for two more architectures, for
Power PC and Power PC 64, and also adjust the string format logic to
handle NULL pointers gracefully, in an attempt to prevent similar issues
with other architectures in the future.

Fixes: 708ac5bea0ce ("libbpf: add ksyscall/kretsyscall sections support for syscall kprobes")
Signed-off-by: Daniel Müller <deso@posteo.net>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20220728222345.3125975-1-deso@posteo.net
2 years agoMerge tag 'net-5.19-final' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Linus Torvalds [Thu, 28 Jul 2022 18:54:59 +0000 (11:54 -0700)]
Merge tag 'net-5.19-final' of git://git./linux/kernel/git/netdev/net

Pull networking fixes from Jakub Kicinski:
 "Including fixes from bluetooth and netfilter, no known blockers for
  the release.

  Current release - regressions:

   - wifi: mac80211: do not abuse fq.lock in ieee80211_do_stop(), fix
     taking the lock before its initialized

   - Bluetooth: mgmt: fix double free on error path

  Current release - new code bugs:

   - eth: ice: fix tunnel checksum offload with fragmented traffic

  Previous releases - regressions:

   - tcp: md5: fix IPv4-mapped support after refactoring, don't take the
     pure v6 path

   - Revert "tcp: change pingpong threshold to 3", improving detection
     of interactive sessions

   - mld: fix netdev refcount leak in mld_{query | report}_work() due to
     a race

   - Bluetooth:
      - always set event mask on suspend, avoid early wake ups
      - L2CAP: fix use-after-free caused by l2cap_chan_put

   - bridge: do not send empty IFLA_AF_SPEC attribute

  Previous releases - always broken:

   - ping6: fix memleak in ipv6_renew_options()

   - sctp: prevent null-deref caused by over-eager error paths

   - virtio-net: fix the race between refill work and close, resulting
     in NAPI scheduled after close and a BUG()

   - macsec:
      - fix three netlink parsing bugs
      - avoid breaking the device state on invalid change requests
      - fix a memleak in another error path

  Misc:

   - dt-bindings: net: ethernet-controller: rework 'fixed-link' schema

   - two more batches of sysctl data race adornment"

* tag 'net-5.19-final' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (67 commits)
  stmmac: dwmac-mediatek: fix resource leak in probe
  ipv6/addrconf: fix a null-ptr-deref bug for ip6_ptr
  net: ping6: Fix memleak in ipv6_renew_options().
  net/funeth: Fix fun_xdp_tx() and XDP packet reclaim
  sctp: leave the err path free in sctp_stream_init to sctp_stream_free
  sfc: disable softirqs for ptp TX
  ptp: ocp: Select CRC16 in the Kconfig.
  tcp: md5: fix IPv4-mapped support
  virtio-net: fix the race between refill work and close
  mptcp: Do not return EINPROGRESS when subflow creation succeeds
  Bluetooth: L2CAP: Fix use-after-free caused by l2cap_chan_put
  Bluetooth: Always set event mask on suspend
  Bluetooth: mgmt: Fix double free on error path
  wifi: mac80211: do not abuse fq.lock in ieee80211_do_stop()
  ice: do not setup vlan for loopback VSI
  ice: check (DD | EOF) bits on Rx descriptor rather than (EOP | RS)
  ice: Fix VSIs unable to share unicast MAC
  ice: Fix tunnel checksum offload with fragmented traffic
  ice: Fix max VLANs available for VF
  netfilter: nft_queue: only allow supported familes and hooks
  ...

2 years agostmmac: dwmac-mediatek: fix resource leak in probe
Dan Carpenter [Thu, 28 Jul 2022 11:52:09 +0000 (14:52 +0300)]
stmmac: dwmac-mediatek: fix resource leak in probe

If mediatek_dwmac_clks_config() fails, then call stmmac_remove_config_dt()
before returning.  Otherwise it is a resource leak.

Fixes: fa4b3ca60e80 ("stmmac: dwmac-mediatek: fix clock issue")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/YuJ4aZyMUlG6yGGa@kili
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agoipv6/addrconf: fix a null-ptr-deref bug for ip6_ptr
Ziyang Xuan [Thu, 28 Jul 2022 01:33:07 +0000 (09:33 +0800)]
ipv6/addrconf: fix a null-ptr-deref bug for ip6_ptr

Change net device's MTU to smaller than IPV6_MIN_MTU or unregister
device while matching route. That may trigger null-ptr-deref bug
for ip6_ptr probability as following.

=========================================================
BUG: KASAN: null-ptr-deref in find_match.part.0+0x70/0x134
Read of size 4 at addr 0000000000000308 by task ping6/263

CPU: 2 PID: 263 Comm: ping6 Not tainted 5.19.0-rc7+ #14
Call trace:
 dump_backtrace+0x1a8/0x230
 show_stack+0x20/0x70
 dump_stack_lvl+0x68/0x84
 print_report+0xc4/0x120
 kasan_report+0x84/0x120
 __asan_load4+0x94/0xd0
 find_match.part.0+0x70/0x134
 __find_rr_leaf+0x408/0x470
 fib6_table_lookup+0x264/0x540
 ip6_pol_route+0xf4/0x260
 ip6_pol_route_output+0x58/0x70
 fib6_rule_lookup+0x1a8/0x330
 ip6_route_output_flags_noref+0xd8/0x1a0
 ip6_route_output_flags+0x58/0x160
 ip6_dst_lookup_tail+0x5b4/0x85c
 ip6_dst_lookup_flow+0x98/0x120
 rawv6_sendmsg+0x49c/0xc70
 inet_sendmsg+0x68/0x94

Reproducer as following:
Firstly, prepare conditions:
$ip netns add ns1
$ip netns add ns2
$ip link add veth1 type veth peer name veth2
$ip link set veth1 netns ns1
$ip link set veth2 netns ns2
$ip netns exec ns1 ip -6 addr add 2001:0db8:0:f101::1/64 dev veth1
$ip netns exec ns2 ip -6 addr add 2001:0db8:0:f101::2/64 dev veth2
$ip netns exec ns1 ifconfig veth1 up
$ip netns exec ns2 ifconfig veth2 up
$ip netns exec ns1 ip -6 route add 2000::/64 dev veth1 metric 1
$ip netns exec ns2 ip -6 route add 2001::/64 dev veth2 metric 1

Secondly, execute the following two commands in two ssh windows
respectively:
$ip netns exec ns1 sh
$while true; do ip -6 addr add 2001:0db8:0:f101::1/64 dev veth1; ip -6 route add 2000::/64 dev veth1 metric 1; ping6 2000::2; done

$ip netns exec ns1 sh
$while true; do ip link set veth1 mtu 1000; ip link set veth1 mtu 1500; sleep 5; done

It is because ip6_ptr has been assigned to NULL in addrconf_ifdown() firstly,
then ip6_ignore_linkdown() accesses ip6_ptr directly without NULL check.

cpu0 cpu1
fib6_table_lookup
__find_rr_leaf
addrconf_notify [ NETDEV_CHANGEMTU ]
addrconf_ifdown
RCU_INIT_POINTER(dev->ip6_ptr, NULL)
find_match
ip6_ignore_linkdown

So we can add NULL check for ip6_ptr before using in ip6_ignore_linkdown() to
fix the null-ptr-deref bug.

Fixes: dcd1f572954f ("net/ipv6: Remove fib6_idev")
Signed-off-by: Ziyang Xuan <william.xuanziyang@huawei.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://lore.kernel.org/r/20220728013307.656257-1-william.xuanziyang@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agonet: ping6: Fix memleak in ipv6_renew_options().
Kuniyuki Iwashima [Thu, 28 Jul 2022 01:22:20 +0000 (18:22 -0700)]
net: ping6: Fix memleak in ipv6_renew_options().

When we close ping6 sockets, some resources are left unfreed because
pingv6_prot is missing sk->sk_prot->destroy().  As reported by
syzbot [0], just three syscalls leak 96 bytes and easily cause OOM.

    struct ipv6_sr_hdr *hdr;
    char data[24] = {0};
    int fd;

    hdr = (struct ipv6_sr_hdr *)data;
    hdr->hdrlen = 2;
    hdr->type = IPV6_SRCRT_TYPE_4;

    fd = socket(AF_INET6, SOCK_DGRAM, NEXTHDR_ICMP);
    setsockopt(fd, IPPROTO_IPV6, IPV6_RTHDR, data, 24);
    close(fd);

To fix memory leaks, let's add a destroy function.

Note the socket() syscall checks if the GID is within the range of
net.ipv4.ping_group_range.  The default value is [1, 0] so that no
GID meets the condition (1 <= GID <= 0).  Thus, the local DoS does
not succeed until we change the default value.  However, at least
Ubuntu/Fedora/RHEL loosen it.

    $ cat /usr/lib/sysctl.d/50-default.conf
    ...
    -net.ipv4.ping_group_range = 0 2147483647

Also, there could be another path reported with these options, and
some of them require CAP_NET_RAW.

  setsockopt
      IPV6_ADDRFORM (inet6_sk(sk)->pktoptions)
      IPV6_RECVPATHMTU (inet6_sk(sk)->rxpmtu)
      IPV6_HOPOPTS (inet6_sk(sk)->opt)
      IPV6_RTHDRDSTOPTS (inet6_sk(sk)->opt)
      IPV6_RTHDR (inet6_sk(sk)->opt)
      IPV6_DSTOPTS (inet6_sk(sk)->opt)
      IPV6_2292PKTOPTIONS (inet6_sk(sk)->opt)

  getsockopt
      IPV6_FLOWLABEL_MGR (inet6_sk(sk)->ipv6_fl_list)

For the record, I left a different splat with syzbot's one.

  unreferenced object 0xffff888006270c60 (size 96):
    comm "repro2", pid 231, jiffies 4294696626 (age 13.118s)
    hex dump (first 32 bytes):
      01 00 00 00 44 00 00 00 00 00 00 00 00 00 00 00  ....D...........
      00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    backtrace:
      [<00000000f6bc7ea9>] sock_kmalloc (net/core/sock.c:2564 net/core/sock.c:2554)
      [<000000006d699550>] do_ipv6_setsockopt.constprop.0 (net/ipv6/ipv6_sockglue.c:715)
      [<00000000c3c3b1f5>] ipv6_setsockopt (net/ipv6/ipv6_sockglue.c:1024)
      [<000000007096a025>] __sys_setsockopt (net/socket.c:2254)
      [<000000003a8ff47b>] __x64_sys_setsockopt (net/socket.c:2265 net/socket.c:2262 net/socket.c:2262)
      [<000000007c409dcb>] do_syscall_64 (arch/x86/entry/common.c:50 arch/x86/entry/common.c:80)
      [<00000000e939c4a9>] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:120)

[0]: https://syzkaller.appspot.com/bug?extid=a8430774139ec3ab7176

Fixes: 6d0bfe226116 ("net: ipv6: Add IPv6 support to the ping socket.")
Reported-by: syzbot+a8430774139ec3ab7176@syzkaller.appspotmail.com
Reported-by: Ayushman Dutta <ayudutta@amazon.com>
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/20220728012220.46918-1-kuniyu@amazon.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agowatch_queue: Fix missing locking in add_watch_to_object()
Linus Torvalds [Thu, 28 Jul 2022 09:31:12 +0000 (10:31 +0100)]
watch_queue: Fix missing locking in add_watch_to_object()

If a watch is being added to a queue, it needs to guard against
interference from addition of a new watch, manual removal of a watch and
removal of a watch due to some other queue being destroyed.

KEYCTL_WATCH_KEY guards against this for the same {key,queue} pair by
holding the key->sem writelocked and by holding refs on both the key and
the queue - but that doesn't prevent interaction from other {key,queue}
pairs.

While add_watch_to_object() does take the spinlock on the event queue,
it doesn't take the lock on the source's watch list.  The assumption was
that the caller would prevent that (say by taking key->sem) - but that
doesn't prevent interference from the destruction of another queue.

Fix this by locking the watcher list in add_watch_to_object().

Fixes: c73be61cede5 ("pipe: Add general notification queue support")
Reported-by: syzbot+03d7b43290037d1f87ca@syzkaller.appspotmail.com
Signed-off-by: David Howells <dhowells@redhat.com>
cc: keyrings@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2 years agowatch_queue: Fix missing rcu annotation
David Howells [Thu, 28 Jul 2022 09:31:06 +0000 (10:31 +0100)]
watch_queue: Fix missing rcu annotation

Since __post_watch_notification() walks wlist->watchers with only the
RCU read lock held, we need to use RCU methods to add to the list (we
already use RCU methods to remove from the list).

Fix add_watch_to_object() to use hlist_add_head_rcu() instead of
hlist_add_head() for that list.

Fixes: c73be61cede5 ("pipe: Add general notification queue support")
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2 years agonet: cdns,macb: use correct xlnx prefix for Xilinx
Krzysztof Kozlowski [Tue, 26 Jul 2022 07:08:02 +0000 (09:08 +0200)]
net: cdns,macb: use correct xlnx prefix for Xilinx

Use correct vendor for Xilinx versions of Cadence MACB/GEM Ethernet
controller.  The Versal compatible was not released, so it can be
changed.  Zynq-7xxx and Ultrascale+ has to be kept in new and deprecated
form.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Harini Katakam <harini.katakam@amd.com>
Link: https://lore.kernel.org/r/20220726070802.26579-2-krzysztof.kozlowski@linaro.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2 years agodt-bindings: net: cdns,macb: use correct xlnx prefix for Xilinx
Krzysztof Kozlowski [Tue, 26 Jul 2022 07:08:01 +0000 (09:08 +0200)]
dt-bindings: net: cdns,macb: use correct xlnx prefix for Xilinx

Use correct vendor for Xilinx versions of Cadence MACB/GEM Ethernet
controller.  The Versal compatible was not released, so it can be
changed.  Zynq-7xxx and Ultrascale+ has to be kept in new and deprecated
form.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220726070802.26579-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2 years agonet/funeth: Fix fun_xdp_tx() and XDP packet reclaim
Dimitris Michailidis [Tue, 26 Jul 2022 21:59:23 +0000 (14:59 -0700)]
net/funeth: Fix fun_xdp_tx() and XDP packet reclaim

The current implementation of fun_xdp_tx(), used for XPD_TX, is
incorrect in that it takes an address/length pair and later releases it
with page_frag_free(). It is OK for XDP_TX but the same code is used by
ndo_xdp_xmit. In that case it loses the XDP memory type and releases the
packet incorrectly for some of the types. Assorted breakage follows.

Change fun_xdp_tx() to take xdp_frame and rely on xdp_return_frame() in
reclaim.

Fixes: db37bc177dae ("net/funeth: add the data path")
Signed-off-by: Dimitris Michailidis <dmichail@fungible.com>
Link: https://lore.kernel.org/r/20220726215923.7887-1-dmichail@fungible.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2 years agoMerge branch '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next...
Paolo Abeni [Thu, 28 Jul 2022 09:54:56 +0000 (11:54 +0200)]
Merge branch '100GbE' of git://git./linux/kernel/git/tnguy/next-queue

Tony Nguyen says:

====================
ice: PPPoE offload support

Marcin Szycik says:

Add support for dissecting PPPoE and PPP-specific fields in flow dissector:
PPPoE session id and PPP protocol type. Add support for those fields in
tc-flower and support offloading PPPoE. Finally, add support for hardware
offload of PPPoE packets in switchdev mode in ice driver.

Example filter:
tc filter add dev $PF1 ingress protocol ppp_ses prio 1 flower pppoe_sid \
    1234 ppp_proto ip skip_sw action mirred egress redirect dev $VF1_PR

Changes in iproute2 are required to use the new fields (will be submitted
soon).

ICE COMMS DDP package is required to create a filter in ice.

* '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue:
  ice: Add support for PPPoE hardware offload
  flow_offload: Introduce flow_match_pppoe
  net/sched: flower: Add PPPoE filter
  flow_dissector: Add PPPoE dissectors
====================

Link: https://lore.kernel.org/r/20220726203133.2171332-1-anthony.l.nguyen@intel.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2 years agoadd missing includes and forward declarations to networking includes under linux/
Jakub Kicinski [Tue, 26 Jul 2022 21:56:52 +0000 (14:56 -0700)]
add missing includes and forward declarations to networking includes under linux/

Similarly to a recent include/net/ cleanup, this patch adds
missing includes to networking headers under include/linux.
All these problems are currently masked by the existing users
including the missing dependency before the broken header.

Link: https://lore.kernel.org/all/20220723045755.2676857-1-kuba@kernel.org/
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Link: https://lore.kernel.org/r/20220726215652.158167-1-kuba@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2 years agoRevert "Merge branch 'octeontx2-minor-tc-fixes'"
Paolo Abeni [Tue, 26 Jul 2022 11:09:27 +0000 (13:09 +0200)]
Revert "Merge branch 'octeontx2-minor-tc-fixes'"

This reverts commit 35d099da41967f114c6472b838e12014706c26e7, reversing
changes made to 58d8bcd47ecc55f1ab92320fe36c31ff4d83cc0c.

I wrongly applied that to the net-next tree instead of the intended
target tree (net). Reverting it on net-next.

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2 years agonet: dsa: mv88e6xxx: fix speed setting for CPU/DSA ports
Marcin Wojtas [Tue, 26 Jul 2022 23:09:18 +0000 (01:09 +0200)]
net: dsa: mv88e6xxx: fix speed setting for CPU/DSA ports

Commit 3c783b83bd0f ("net: dsa: mv88e6xxx: get rid of SPEED_MAX setting")
stopped relying on SPEED_MAX constant and hardcoded speed settings
for the switch ports and rely on phylink configuration.

It turned out, however, that when the relevant code is called,
the mac_capabilites of CPU/DSA port remain unset.
mv88e6xxx_setup_port() is called via mv88e6xxx_setup() in
dsa_tree_setup_switches(), which precedes setting the caps in
phylink_get_caps down in the chain of dsa_tree_setup_ports().

As a result the mac_capabilites are 0 and the default speed for CPU/DSA
port is 10M at the start. To fix that, execute mv88e6xxx_get_caps()
and obtain the capabilities driectly.

Fixes: 3c783b83bd0f ("net: dsa: mv88e6xxx: get rid of SPEED_MAX setting")
Signed-off-by: Marcin Wojtas <mw@semihalf.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Link: https://lore.kernel.org/r/20220726230918.2772378-1-mw@semihalf.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agoMerge branch '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net...
Jakub Kicinski [Thu, 28 Jul 2022 02:56:28 +0000 (19:56 -0700)]
Merge branch '100GbE' of git://git./linux/kernel/git/tnguy/net-queue

Tony Nguyen says:

====================
Intel Wired LAN Driver Updates 2022-07-26

This series contains updates to ice driver only.

Przemyslaw corrects accounting for VF VLANs to allow for correct number
of VLANs for untrusted VF. He also correct issue with checksum offload
on VXLAN tunnels.

Ani allows for two VSIs to share the same MAC address.

Maciej corrects checked bits for descriptor completion of loopback

* '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue:
  ice: do not setup vlan for loopback VSI
  ice: check (DD | EOF) bits on Rx descriptor rather than (EOP | RS)
  ice: Fix VSIs unable to share unicast MAC
  ice: Fix tunnel checksum offload with fragmented traffic
  ice: Fix max VLANs available for VF
====================

Link: https://lore.kernel.org/r/20220726204646.2171589-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agonet: devlink: remove redundant net_eq() check from sb_pool_get_dumpit()
Jiri Pirko [Wed, 27 Jul 2022 05:59:12 +0000 (07:59 +0200)]
net: devlink: remove redundant net_eq() check from sb_pool_get_dumpit()

The net_eq() check is already performed inside
devlinks_xa_for_each_registered_get() helper, so remove the redundant
appearance.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Link: https://lore.kernel.org/r/20220727055912.568391-1-jiri@resnulli.us
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agodt-bindings: net: hirschmann,hellcreek: use absolute path to other schema
Krzysztof Kozlowski [Tue, 26 Jul 2022 11:56:50 +0000 (13:56 +0200)]
dt-bindings: net: hirschmann,hellcreek: use absolute path to other schema

Absolute path to other DT schema is preferred over relative one.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Kurt Kanzenbach <kurt@linutronix.de>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220726115650.100726-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agonet/sched: sch_cbq: change the type of cbq_set_lss to void
Zhengchao Shao [Tue, 26 Jul 2022 03:07:48 +0000 (11:07 +0800)]
net/sched: sch_cbq: change the type of cbq_set_lss to void

Change the type of cbq_set_lss to void.

Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.com>
Link: https://lore.kernel.org/r/20220726030748.243505-1-shaozhengchao@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agosctp: leave the err path free in sctp_stream_init to sctp_stream_free
Xin Long [Mon, 25 Jul 2022 22:11:06 +0000 (18:11 -0400)]
sctp: leave the err path free in sctp_stream_init to sctp_stream_free

A NULL pointer dereference was reported by Wei Chen:

  BUG: kernel NULL pointer dereference, address: 0000000000000000
  RIP: 0010:__list_del_entry_valid+0x26/0x80
  Call Trace:
   <TASK>
   sctp_sched_dequeue_common+0x1c/0x90
   sctp_sched_prio_dequeue+0x67/0x80
   __sctp_outq_teardown+0x299/0x380
   sctp_outq_free+0x15/0x20
   sctp_association_free+0xc3/0x440
   sctp_do_sm+0x1ca7/0x2210
   sctp_assoc_bh_rcv+0x1f6/0x340

This happens when calling sctp_sendmsg without connecting to server first.
In this case, a data chunk already queues up in send queue of client side
when processing the INIT_ACK from server in sctp_process_init() where it
calls sctp_stream_init() to alloc stream_in. If it fails to alloc stream_in
all stream_out will be freed in sctp_stream_init's err path. Then in the
asoc freeing it will crash when dequeuing this data chunk as stream_out
is missing.

As we can't free stream out before dequeuing all data from send queue, and
this patch is to fix it by moving the err path stream_out/in freeing in
sctp_stream_init() to sctp_stream_free() which is eventually called when
freeing the asoc in sctp_association_free(). This fix also makes the code
in sctp_process_init() more clear.

Note that in sctp_association_init() when it fails in sctp_stream_init(),
sctp_association_free() will not be called, and in that case it should
go to 'stream_free' err path to free stream instead of 'fail_init'.

Fixes: 5bbbbe32a431 ("sctp: introduce stream scheduler foundations")
Reported-by: Wei Chen <harperchen1110@gmail.com>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Link: https://lore.kernel.org/r/831a3dc100c4908ff76e5bcc363be97f2778bc0b.1658787066.git.lucien.xin@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agosfc: disable softirqs for ptp TX
Alejandro Lucero [Tue, 26 Jul 2022 06:45:04 +0000 (08:45 +0200)]
sfc: disable softirqs for ptp TX

Sending a PTP packet can imply to use the normal TX driver datapath but
invoked from the driver's ptp worker. The kernel generic TX code
disables softirqs and preemption before calling specific driver TX code,
but the ptp worker does not. Although current ptp driver functionality
does not require it, there are several reasons for doing so:

   1) The invoked code is always executed with softirqs disabled for non
      PTP packets.
   2) Better if a ptp packet transmission is not interrupted by softirq
      handling which could lead to high latencies.
   3) netdev_xmit_more used by the TX code requires preemption to be
      disabled.

Indeed a solution for dealing with kernel preemption state based on static
kernel configuration is not possible since the introduction of dynamic
preemption level configuration at boot time using the static calls
functionality.

Fixes: f79c957a0b537 ("drivers: net: sfc: use netdev_xmit_more helper")
Signed-off-by: Alejandro Lucero <alejandro.lucero-palau@amd.com>
Link: https://lore.kernel.org/r/20220726064504.49613-1-alejandro.lucero-palau@amd.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>