Eric Dumazet [Fri, 13 Nov 2020 15:08:09 +0000 (07:08 -0800)]
tcp: avoid indirect call to tcp_stream_memory_free()
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Eric Dumazet [Fri, 13 Nov 2020 15:08:08 +0000 (07:08 -0800)]
tcp: uninline tcp_stream_memory_free()
Both IPv4 and IPv6 needs it via a function pointer.
Following patch will avoid the indirect call.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Oliver Herms [Fri, 13 Nov 2020 08:55:17 +0000 (09:55 +0100)]
IPv4: RTM_GETROUTE: Add RTA_ENCAP to result
This patch adds an IPv4 routes encapsulation attribute
to the result of netlink RTM_GETROUTE requests
(e.g. ip route get 192.0.2.1).
Signed-off-by: Oliver Herms <oliver.peter.herms@gmail.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://lore.kernel.org/r/20201113085517.GA1307262@tws
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jakub Kicinski [Sat, 14 Nov 2020 21:23:01 +0000 (13:23 -0800)]
Merge branch 'ionic-updates'
Shannon Nelson says:
====================
ionic updates
These updates are a bit of code cleaning and a minor
bit of performance tweaking.
v3: convert ionic_lif_quiesce() to void
v2: added void cast on call to ionic_lif_quiesce()
lowered batching threshold
added patch to flatten calls to ionic_lif_rx_mode
added patch to change from_ndo to can_sleep
====================
Link: https://lore.kernel.org/r/20201112182208.46770-1-snelson@pensando.io
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Shannon Nelson [Thu, 12 Nov 2020 18:22:08 +0000 (10:22 -0800)]
ionic: useful names for booleans
With a few more uses of true and false in function calls, we
need to give them some useful names so we can tell from the
calling point what we're doing.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Reviewed-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Shannon Nelson [Thu, 12 Nov 2020 18:22:07 +0000 (10:22 -0800)]
ionic: change set_rx_mode from_ndo to can_sleep
Instead of having two different ways of expressing the same
sleepability concept, using opposite logic, we can rework the
from_ndo to can_sleep for a more consistent usage.
Fixes:
1800eee16676 ("net: ionic: Replace in_interrupt() usage.")
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Reviewed-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Shannon Nelson [Thu, 12 Nov 2020 18:22:06 +0000 (10:22 -0800)]
ionic: flatten calls to ionic_lif_rx_mode
The _ionic_lif_rx_mode() is only used once and really doesn't
need to be broken out.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Reviewed-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Shannon Nelson [Thu, 12 Nov 2020 18:22:05 +0000 (10:22 -0800)]
ionic: use mc sync for multicast filters
We should be using the multicast sync routines for the multicast
filters. Also, let's just flatten the logic a bit and pull
the small unicast routine back into ionic_set_rx_mode().
Fixes:
1800eee16676 ("net: ionic: Replace in_interrupt() usage.")
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Reviewed-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Shannon Nelson [Thu, 12 Nov 2020 18:22:04 +0000 (10:22 -0800)]
ionic: batch rx buffer refilling
We don't need to refill the rx descriptors on every napi
if only a few were handled. Waiting until we can batch up
a few together will save us a few Rx cycles.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Reviewed-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Shannon Nelson [Thu, 12 Nov 2020 18:22:03 +0000 (10:22 -0800)]
ionic: add lif quiesce
After the queues are stopped, expressly quiesce the lif.
This assures that even if the queues were in an odd state,
the firmware will close up everything cleanly.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Reviewed-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Shannon Nelson [Thu, 12 Nov 2020 18:22:02 +0000 (10:22 -0800)]
ionic: check for link after netdev registration
Request a link check as soon as the netdev is registered rather
than waiting for the watchdog to go off in order to get the
interface operational a little more quickly.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Reviewed-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Shannon Nelson [Thu, 12 Nov 2020 18:22:01 +0000 (10:22 -0800)]
ionic: start queues before announcing link up
Change the order of operations in the link_up handling to be
sure that the queues are up and ready before we announce that
the link is up.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Reviewed-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
YueHaibing [Thu, 12 Nov 2020 14:49:36 +0000 (22:49 +0800)]
net: macb: Fix passing zero to 'PTR_ERR'
Check PTR_ERR with IS_ERR to fix this.
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Link: https://lore.kernel.org/r/20201112144936.54776-1-yuehaibing@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Lukas Bulwahn [Fri, 13 Nov 2020 13:50:12 +0000 (14:50 +0100)]
ipv6: remove unused function ipv6_skb_idev()
Commit
bdb7cc643fc9 ("ipv6: Count interface receive statistics on the
ingress netdev") removed all callees for ipv6_skb_idev(). Hence, since
then, ipv6_skb_idev() is unused and make CC=clang W=1 warns:
net/ipv6/exthdrs.c:909:33:
warning: unused function 'ipv6_skb_idev' [-Wunused-function]
So, remove this unused function and a -Wunused-function warning.
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
Link: https://lore.kernel.org/r/20201113135012.32499-1-lukas.bulwahn@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jakub Kicinski [Sat, 14 Nov 2020 17:13:40 +0000 (09:13 -0800)]
Merge git://git./linux/kernel/git/bpf/bpf-next
Daniel Borkmann says:
====================
pull-request: bpf-next 2020-11-14
1) Add BTF generation for kernel modules and extend BTF infra in kernel
e.g. support for split BTF loading and validation, from Andrii Nakryiko.
2) Support for pointers beyond pkt_end to recognize LLVM generated patterns
on inlined branch conditions, from Alexei Starovoitov.
3) Implements bpf_local_storage for task_struct for BPF LSM, from KP Singh.
4) Enable FENTRY/FEXIT/RAW_TP tracing program to use the bpf_sk_storage
infra, from Martin KaFai Lau.
5) Add XDP bulk APIs that introduce a defer/flush mechanism to optimize the
XDP_REDIRECT path, from Lorenzo Bianconi.
6) Fix a potential (although rather theoretical) deadlock of hashtab in NMI
context, from Song Liu.
7) Fixes for cross and out-of-tree build of bpftool and runqslower allowing build
for different target archs on same source tree, from Jean-Philippe Brucker.
8) Fix error path in htab_map_alloc() triggered from syzbot, from Eric Dumazet.
9) Move functionality from test_tcpbpf_user into the test_progs framework so it
can run in BPF CI, from Alexander Duyck.
10) Lift hashtab key_size limit to be larger than MAX_BPF_STACK, from Florian Lehner.
Note that for the fix from Song we have seen a sparse report on context
imbalance which requires changes in sparse itself for proper annotation
detection where this is currently being discussed on linux-sparse among
developers [0]. Once we have more clarification/guidance after their fix,
Song will follow-up.
[0] https://lore.kernel.org/linux-sparse/CAHk-=wh4bx8A8dHnX612MsDO13st6uzAz1mJ1PaHHVevJx_ZCw@mail.gmail.com/T/
https://lore.kernel.org/linux-sparse/
20201109221345.uklbp3lzgq6g42zb@ltop.local/T/
* git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (66 commits)
net: mlx5: Add xdp tx return bulking support
net: mvpp2: Add xdp tx return bulking support
net: mvneta: Add xdp tx return bulking support
net: page_pool: Add bulk support for ptr_ring
net: xdp: Introduce bulking for xdp tx return path
bpf: Expose bpf_d_path helper to sleepable LSM hooks
bpf: Augment the set of sleepable LSM hooks
bpf: selftest: Use bpf_sk_storage in FENTRY/FEXIT/RAW_TP
bpf: Allow using bpf_sk_storage in FENTRY/FEXIT/RAW_TP
bpf: Rename some functions in bpf_sk_storage
bpf: Folding omem_charge() into sk_storage_charge()
selftests/bpf: Add asm tests for pkt vs pkt_end comparison.
selftests/bpf: Add skb_pkt_end test
bpf: Support for pointers beyond pkt_end.
tools/bpf: Always run the *-clean recipes
tools/bpf: Add bootstrap/ to .gitignore
bpf: Fix NULL dereference in bpf_task_storage
tools/bpftool: Fix build slowdown
tools/runqslower: Build bpftool using HOSTCC
tools/runqslower: Enable out-of-tree build
...
====================
Link: https://lore.kernel.org/r/20201114020819.29584-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Steen Hegelund [Thu, 12 Nov 2020 09:22:50 +0000 (10:22 +0100)]
net: phy: mscc: Add PTP support for 2 more VSC PHYs
Add VSC8572 and VSC8574 in the PTP configuration
as they also support PTP.
The relevant datasheets can be found here:
- VSC8572: https://www.microchip.com/wwwproducts/en/VSC8572
- VSC8574: https://www.microchip.com/wwwproducts/en/VSC8574
Signed-off-by: Steen Hegelund <steen.hegelund@microchip.com>
Link: https://lore.kernel.org/r/20201112092250.914079-1-steen.hegelund@microchip.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Daniel Borkmann [Sat, 14 Nov 2020 01:29:00 +0000 (02:29 +0100)]
Merge branch 'xdp-redirect-bulk'
Lorenzo Bianconi says:
====================
XDP bulk APIs introduce a defer/flush mechanism to return
pages belonging to the same xdp_mem_allocator object
(identified via the mem.id field) in bulk to optimize
I-cache and D-cache since xdp_return_frame is usually
run inside the driver NAPI tx completion loop.
Convert mvneta, mvpp2 and mlx5 drivers to xdp_return_frame_bulk APIs.
More details on benchmarks run on mlx5 can be found here:
https://github.com/xdp-project/xdp-project/blob/master/areas/mem/xdp_bulk_return01.org
Changes since v5:
- do not keep looping over ptr_ring if the cache is full but release leftover
pages running page_pool_return_page
Changes since v4:
- fix comments
- introduce xdp_frame_bulk_init utility routine
- compiler annotations for I-cache code layout
- move rcu_read_lock outside fast-path
- mlx5 xdp bulking code optimization
Changes since v3:
- align DEV_MAP_BULK_SIZE to XDP_BULK_QUEUE_SIZE
- refactor page_pool_put_page_bulk to avoid code duplication
Changes since v2:
- move mvneta changes in a dedicated patch
Changes since v1:
- improve comments
- rework xdp_return_frame_bulk routine logic
- move count and xa fields at the beginning of xdp_frame_bulk struct
- invert logic in page_pool_put_page_bulk for loop
====================
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Lorenzo Bianconi [Fri, 13 Nov 2020 11:48:32 +0000 (12:48 +0100)]
net: mlx5: Add xdp tx return bulking support
Convert mlx5 driver to xdp_return_frame_bulk APIs.
XDP_REDIRECT (upstream codepath): 8.9Mpps
XDP_REDIRECT (upstream codepath + bulking APIs): 10.2Mpps
Co-developed-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Tested-by: Jesper Dangaard Brouer <brouer@redhat.com>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/250460319fd868b7b5668fc1deca74dd42813a90.1605267335.git.lorenzo@kernel.org
Lorenzo Bianconi [Fri, 13 Nov 2020 11:48:31 +0000 (12:48 +0100)]
net: mvpp2: Add xdp tx return bulking support
Convert mvpp2 driver to xdp_return_frame_bulk APIs.
XDP_REDIRECT (upstream codepath): 1.79Mpps
XDP_REDIRECT (upstream codepath + bulking APIs): 1.93Mpps
Co-developed-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Tested-by: Matteo Croce <mcroce@microsoft.com>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/0b38c295e58e8ce251ef6b4e2187a2f457f9f7a3.1605267335.git.lorenzo@kernel.org
Lorenzo Bianconi [Fri, 13 Nov 2020 11:48:30 +0000 (12:48 +0100)]
net: mvneta: Add xdp tx return bulking support
Convert mvneta driver to xdp_return_frame_bulk APIs.
XDP_REDIRECT (upstream codepath): 275Kpps
XDP_REDIRECT (upstream codepath + bulking APIs): 284Kpps
Co-developed-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/9af8014006d022fc0fec78cdaa71beb56999750d.1605267335.git.lorenzo@kernel.org
Lorenzo Bianconi [Fri, 13 Nov 2020 11:48:29 +0000 (12:48 +0100)]
net: page_pool: Add bulk support for ptr_ring
Introduce the capability to batch page_pool ptr_ring refill since it is
usually run inside the driver NAPI tx completion loop.
Suggested-by: Jesper Dangaard Brouer <brouer@redhat.com>
Co-developed-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Link: https://lore.kernel.org/bpf/08dd249c9522c001313f520796faa777c4089e1c.1605267335.git.lorenzo@kernel.org
Lorenzo Bianconi [Fri, 13 Nov 2020 11:48:28 +0000 (12:48 +0100)]
net: xdp: Introduce bulking for xdp tx return path
XDP bulk APIs introduce a defer/flush mechanism to return
pages belonging to the same xdp_mem_allocator object
(identified via the mem.id field) in bulk to optimize
I-cache and D-cache since xdp_return_frame is usually run
inside the driver NAPI tx completion loop.
The bulk queue size is set to 16 to be aligned to how
XDP_REDIRECT bulking works. The bulk is flushed when
it is full or when mem.id changes.
xdp_frame_bulk is usually stored/allocated on the function
call-stack to avoid locking penalties.
Current implementation considers only page_pool memory model.
Suggested-by: Jesper Dangaard Brouer <brouer@redhat.com>
Co-developed-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Link: https://lore.kernel.org/bpf/e190c03eac71b20c8407ae0fc2c399eda7835f49.1605267335.git.lorenzo@kernel.org
Jisheng Zhang [Thu, 12 Nov 2020 01:27:37 +0000 (09:27 +0800)]
net: stmmac: platform: use optional clk/reset get APIs
Use the devm_reset_control_get_optional() and devm_clk_get_optional()
rather than open coding them.
Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
Link: https://lore.kernel.org/r/20201112092606.5173aa6f@xhacker.debian
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Heiner Kallweit [Wed, 11 Nov 2020 21:56:29 +0000 (22:56 +0100)]
r8169: improve rtl_tx
We can simplify the for() condition and eliminate variable tx_left.
The change also considers that tp->cur_tx may be incremented by a
racing rtl8169_start_xmit().
In addition replace the write to tp->dirty_tx and the following
smp_mb() with an equivalent call to smp_store_mb(). This implicitly
adds a WRITE_ONCE() to the write.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://lore.kernel.org/r/c2e19e5e-3d3f-d663-af32-13c3374f5def@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Heiner Kallweit [Wed, 11 Nov 2020 21:14:27 +0000 (22:14 +0100)]
r8169: use READ_ONCE in rtl_tx_slots_avail
tp->dirty_tx and tp->cur_tx may be changed by a racing rtl_tx() or
rtl8169_start_xmit(). Use READ_ONCE() to annotate the races and ensure
that the compiler doesn't use cached values.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://lore.kernel.org/r/5676fee3-f6b4-84f2-eba5-c64949a371ad@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jakub Kicinski [Fri, 13 Nov 2020 23:37:10 +0000 (15:37 -0800)]
Merge branch 'net-ipa-two-fixes'
Alex Elder says:
====================
net: ipa: two fixes
This small series makes two fixes to the IPA code:
- While reviewing something else I found that one of the resource
limits on the SDM845 used the wrong value. The first patch
fixes this. The correct value allocates more resources of this
type for IPA to use, and otherwise does not change behavior.
- When the IPA-resident microcontroller starts up it generates an
event, which triggers an AP interrupt. The event merely
provides some information for logging, which we don't support.
We already ignore the event, and that's harmless. So this
patch explicitly ignores it rather than issuing a warning when
it occurs.
====================
Link: https://lore.kernel.org/r/20201112121157.19784-1-elder@linaro.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Alex Elder [Thu, 12 Nov 2020 12:20:00 +0000 (06:20 -0600)]
net: ipa: ignore the microcontroller log event
The IPA-resident microcontroller has the ability to log various
activity in an area of IPA shared memory. When the microcontroller
starts it generates an event to the AP to provide information about
the log.
We don't support reading this log, and we can safely ignore the
event. So do that rather than treating the log info event we
receive as "unsupported."
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Alex Elder [Thu, 12 Nov 2020 12:11:56 +0000 (06:11 -0600)]
net: ipa: fix source packet contexts limit
I have discovered that the maximum number of source packet contexts
configured for SDM845 is incorrect. Fix this error.
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jakub Kicinski [Fri, 13 Nov 2020 23:33:37 +0000 (15:33 -0800)]
Merge branch 'sfc-further-ef100-encap-tso-features'
Edward Cree says:
====================
sfc: further EF100 encap TSO features
This series adds support for GRE and GRE_CSUM TSO on EF100 NICs, as
well as improving the handling of UDP tunnel TSO.
====================
Link: https://lore.kernel.org/r/eda2de73-edf2-8b92-edb9-099ebda09ebc@solarflare.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Edward Cree [Thu, 12 Nov 2020 15:20:05 +0000 (15:20 +0000)]
sfc: support GRE TSO on EF100
We can treat SKB_GSO_GRE almost exactly the same as UDP tunnels, except
that we don't want to edit the outer UDP len (as there isn't one).
For SKB_GSO_GRE_CSUM, we have to use GSO_PARTIAL as the device doesn't
support offload of non-UDP outer L4 checksums.
Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Acked-by: Martin Habets <mhabets@solarflare.com>
Reviewed-by: Alexander Duyck <alexanderduyck@fb.com>
Edward Cree [Thu, 12 Nov 2020 15:19:47 +0000 (15:19 +0000)]
sfc: correctly support non-partial GSO_UDP_TUNNEL_CSUM on EF100
By asking the HW for the correct edits, we can make UDP tunnel TSO
work without needing GSO_PARTIAL. So don't specify it in our
netdev->gso_partial_features.
However, retain GSO_PARTIAL support, as this will be used for other
protocols later.
Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Acked-by: Martin Habets <mhabets@solarflare.com>
Reviewed-by: Alexander Duyck <alexanderduyck@fb.com>
Edward Cree [Thu, 12 Nov 2020 15:19:26 +0000 (15:19 +0000)]
sfc: extend bitfield macros to 19 fields
Our TSO descriptors got even more fussy.
Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Acked-by: Martin Habets <mhabets@solarflare.com>
Reviewed-by: Alexander Duyck <alexanderduyck@fb.com>
Jakub Kicinski [Fri, 13 Nov 2020 23:13:45 +0000 (15:13 -0800)]
Merge branch 'net-ipa-gsi-register-consolidation'
Alex Elder says:
====================
net: ipa: GSI register consolidation
This series rearranges and consolidates some GSI register
definitions. Its general aim is to make things more
consistent, by:
- Using enumerated types to define the values held in GSI register
fields
- Defining field values in "gsi_reg.h", together with the
definition of the register (and field) that holds them
- Format enumerated type members consistently, with hexidecimal
numeric values, and assignments aligned on the same column
There is one checkpatch "CHECK" warning requesting a blank line; I
ignored that because my intention was to group certain definitions.
====================
Link: https://lore.kernel.org/r/20201110215922.23514-1-elder@linaro.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Alex Elder [Tue, 10 Nov 2020 21:59:22 +0000 (15:59 -0600)]
net: ipa: use enumerated types for GSI field values
Replace constants defined with an "_FVAL" suffix with values defined
in enumerated types, to be consistent with other usage in the driver.
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Alex Elder [Tue, 10 Nov 2020 21:59:21 +0000 (15:59 -0600)]
net: ipa: move GSI command opcode values into "gsi_reg.h"
The gsi_ch_cmd_opcode, gsi_evt_cmd_opcode, and gsi_generic_cmd_opcode
enumerated types are values that fields in the GSI command registers
can take on. Move their definitions out of "gsi.c" and into "gsi_reg.h",
alongside the definition of registers they are associated with.
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Alex Elder [Tue, 10 Nov 2020 21:59:20 +0000 (15:59 -0600)]
net: ipa: move GSI error values into "gsi_reg.h"
The gsi_err_code and gsi_err_type enumerated types are values that
fields in the GSI ERROR_LOG register can take on. Move their
definitions out of "gsi.c" and into "gsi_reg.h", alongside the
definition of the ERROR_LOG register offset and field symbols.
Drop the "_ERR" suffix in the names of the gsi_err_code members.
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Alex Elder [Tue, 10 Nov 2020 21:59:19 +0000 (15:59 -0600)]
net: ipa: move channel type values into "gsi_reg.h"
The gsi_channel_type enumerated type define values used for the
channel type/protocol for event rings and channels. Move its
definition out of "gsi.c" and into "gsi_reg.h", alongside the
definition of the CH_C_CNTXT_0 register offset and its fields.
Add a comment near the definition of the EV_CH_E_CNTXT_0 register
indicating this type is used for its EV_CHTYPE field.
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Alex Elder [Tue, 10 Nov 2020 21:59:18 +0000 (15:59 -0600)]
net: ipa: use common value for channel type and protocol
The numeric values that represent the event ring channel type are
identical to the values that represent the matching protocol used
for a channel. Use a new gsi_channel_type enumerated type to
represent the values programmed for both cases, using "CHANNEL_TYPE"
in member names in place of "EVT_CHTYPE" and "CHANNEL_PROTOCOL".
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Alex Elder [Tue, 10 Nov 2020 21:59:17 +0000 (15:59 -0600)]
net: ipa: define GSI interrupt types with enums
Define the GSI global interrupt types with an enumerated type whose
values are the bit positions representing the global interrupt types.
Similarly, define the GSI general interrupt types with an enumerated
type whose values are the bit positions of general interrupt types.
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Wenlin Kang [Thu, 12 Nov 2020 09:34:42 +0000 (17:34 +0800)]
tipc: fix -Wstringop-truncation warnings
Replace strncpy() with strscpy(), fixes the following warning:
In function 'bearer_name_validate',
inlined from 'tipc_enable_bearer' at net/tipc/bearer.c:246:7:
net/tipc/bearer.c:141:2: warning: 'strncpy' specified bound 32 equals destination size [-Wstringop-truncation]
strncpy(name_copy, name, TIPC_MAX_BEARER_NAME);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Signed-off-by: Wenlin Kang <wenlin.kang@windriver.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Link: https://lore.kernel.org/r/20201112093442.8132-1-wenlin.kang@windriver.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jakub Kicinski [Fri, 13 Nov 2020 20:03:21 +0000 (12:03 -0800)]
Merge tag 'mac80211-next-for-net-next-2020-11-13' of git://git./linux/kernel/git/jberg/mac80211-next
Johannes Berg says:
====================
Some updates:
* injection/radiotap updates for new test capabilities
* remove WDS support - even years ago when we turned
it off by default it was already basically unusable
* support for HE (802.11ax) rates for beacons
* support for some vendor-specific HE rates
* many other small features/cleanups
* tag 'mac80211-next-for-net-next-2020-11-13' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next: (21 commits)
nl80211: fix kernel-doc warning in the new SAE attribute
cfg80211: remove WDS code
mac80211: remove WDS-related code
rt2x00: remove WDS code
b43legacy: remove WDS code
b43: remove WDS code
carl9170: remove WDS code
ath9k: remove WDS code
wireless: remove CONFIG_WIRELESS_WDS
mac80211: assure that certain drivers adhere to DONT_REORDER flag
mac80211: don't overwrite QoS TID of injected frames
mac80211: adhere to Tx control flag that prevents frame reordering
mac80211: add radiotap flag to assure frames are not reordered
mac80211: save HE oper info in BSS config for mesh
cfg80211: add support to configure HE MCS for beacon rate
nl80211: fix beacon tx rate mask validation
nl80211/cfg80211: fix potential infinite loop
cfg80211: Add support to calculate and report 4096-QAM HE rates
cfg80211: Add support to configure SAE PWE value to drivers
ieee80211: Add definition for WFA DPP
...
====================
Link: https://lore.kernel.org/r/20201113101148.25268-1-johannes@sipsolutions.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
KP Singh [Fri, 13 Nov 2020 00:59:30 +0000 (00:59 +0000)]
bpf: Expose bpf_d_path helper to sleepable LSM hooks
Sleepable hooks are never called from an NMI/interrupt context, so it
is safe to use the bpf_d_path helper in LSM programs attaching to these
hooks.
The helper is not restricted to sleepable programs and merely uses the
list of sleepable hooks as the initial subset of LSM hooks where it can
be used.
Signed-off-by: KP Singh <kpsingh@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20201113005930.541956-3-kpsingh@chromium.org
KP Singh [Fri, 13 Nov 2020 00:59:29 +0000 (00:59 +0000)]
bpf: Augment the set of sleepable LSM hooks
Update the set of sleepable hooks with the ones that do not trigger
a warning with might_fault() when exercised with the correct kernel
config options enabled, i.e.
DEBUG_ATOMIC_SLEEP=y
LOCKDEP=y
PROVE_LOCKING=y
This means that a sleepable LSM eBPF program can be attached to these
LSM hooks. A new helper method bpf_lsm_is_sleepable_hook is added and
the set is maintained locally in bpf_lsm.c
Signed-off-by: KP Singh <kpsingh@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20201113005930.541956-2-kpsingh@chromium.org
Alexei Starovoitov [Fri, 13 Nov 2020 02:39:28 +0000 (18:39 -0800)]
Merge branch 'bpf: Enable bpf_sk_storage for FENTRY/FEXIT/RAW_TP'
Martin KaFai says:
====================
This set is to allow the FENTRY/FEXIT/RAW_TP tracing program to use
bpf_sk_storage. The first two patches are a cleanup. The last patch is
tests. Patch 3 has the required kernel changes to
enable bpf_sk_storage for FENTRY/FEXIT/RAW_TP.
Please see individual patch for details.
v2:
- Rename some of the function prefix from sk_storage to bpf_sk_storage
- Use prefix check instead of substr check
====================
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Martin KaFai Lau [Thu, 12 Nov 2020 21:13:20 +0000 (13:13 -0800)]
bpf: selftest: Use bpf_sk_storage in FENTRY/FEXIT/RAW_TP
This patch tests storing the task's related info into the
bpf_sk_storage by fentry/fexit tracing at listen, accept,
and connect. It also tests the raw_tp at inet_sock_set_state.
A negative test is done by tracing the bpf_sk_storage_free()
and using bpf_sk_storage_get() at the same time. It ensures
this bpf program cannot load.
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20201112211320.2587537-1-kafai@fb.com
Martin KaFai Lau [Thu, 12 Nov 2020 21:13:13 +0000 (13:13 -0800)]
bpf: Allow using bpf_sk_storage in FENTRY/FEXIT/RAW_TP
This patch enables the FENTRY/FEXIT/RAW_TP tracing program to use
the bpf_sk_storage_(get|delete) helper, so those tracing programs
can access the sk's bpf_local_storage and the later selftest
will show some examples.
The bpf_sk_storage is currently used in bpf-tcp-cc, tc,
cg sockops...etc which is running either in softirq or
task context.
This patch adds bpf_sk_storage_get_tracing_proto and
bpf_sk_storage_delete_tracing_proto. They will check
in runtime that the helpers can only be called when serving
softirq or running in a task context. That should enable
most common tracing use cases on sk.
During the load time, the new tracing_allowed() function
will ensure the tracing prog using the bpf_sk_storage_(get|delete)
helper is not tracing any bpf_sk_storage*() function itself.
The sk is passed as "void *" when calling into bpf_local_storage.
This patch only allows tracing a kernel function.
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20201112211313.2587383-1-kafai@fb.com
Martin KaFai Lau [Thu, 12 Nov 2020 21:13:07 +0000 (13:13 -0800)]
bpf: Rename some functions in bpf_sk_storage
Rename some of the functions currently prefixed with sk_storage
to bpf_sk_storage. That will make the next patch have fewer
prefix check and also bring the bpf_sk_storage.c to a more
consistent function naming.
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: KP Singh <kpsingh@google.com>
Link: https://lore.kernel.org/bpf/20201112211307.2587021-1-kafai@fb.com
Martin KaFai Lau [Thu, 12 Nov 2020 21:13:01 +0000 (13:13 -0800)]
bpf: Folding omem_charge() into sk_storage_charge()
sk_storage_charge() is the only user of omem_charge().
This patch simplifies it by folding omem_charge() into
sk_storage_charge().
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Song Liu <songliubraving@fb.com>
Acked-by: KP Singh <kpsingh@google.com>
Link: https://lore.kernel.org/bpf/20201112211301.2586255-1-kafai@fb.com
Jakub Kicinski [Fri, 13 Nov 2020 00:54:48 +0000 (16:54 -0800)]
Merge https://git./linux/kernel/git/netdev/net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Daniel Borkmann [Fri, 13 Nov 2020 00:42:12 +0000 (01:42 +0100)]
Merge branch 'bpf-ptrs-beyond-pkt-end'
Alexei Starovoitov says:
====================
v1->v2:
- removed set-but-unused variable.
- added Jiri's Tested-by.
In some cases LLVM uses the knowledge that branch is taken to optimze the code
which causes the verifier to reject valid programs.
Teach the verifier to recognize that
r1 = skb->data;
r1 += 10;
r2 = skb->data_end;
if (r1 > r2) {
here r1 points beyond packet_end and subsequent
if (r1 > r2) // always evaluates to "true".
}
====================
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Alexei Starovoitov [Wed, 11 Nov 2020 03:12:13 +0000 (19:12 -0800)]
selftests/bpf: Add asm tests for pkt vs pkt_end comparison.
Add few assembly tests for packet comparison.
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Tested-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/20201111031213.25109-4-alexei.starovoitov@gmail.com
Alexei Starovoitov [Wed, 11 Nov 2020 03:12:12 +0000 (19:12 -0800)]
selftests/bpf: Add skb_pkt_end test
Add a test that currently makes LLVM generate assembly code:
$ llvm-objdump -S skb_pkt_end.o
0000000000000000 <main_prog>:
; if (skb_shorter(skb, ETH_IPV4_TCP_SIZE))
0: 61 12 50 00 00 00 00 00 r2 = *(u32 *)(r1 + 80)
1: 61 14 4c 00 00 00 00 00 r4 = *(u32 *)(r1 + 76)
2: bf 43 00 00 00 00 00 00 r3 = r4
3: 07 03 00 00 36 00 00 00 r3 += 54
4: b7 01 00 00 00 00 00 00 r1 = 0
5: 2d 23 02 00 00 00 00 00 if r3 > r2 goto +2 <LBB0_2>
6: 07 04 00 00 0e 00 00 00 r4 += 14
; if (skb_shorter(skb, ETH_IPV4_TCP_SIZE))
7: bf 41 00 00 00 00 00 00 r1 = r4
0000000000000040 <LBB0_2>:
8: b4 00 00 00 ff ff ff ff w0 = -1
; if (!(ip = get_iphdr(skb)))
9: 2d 23 05 00 00 00 00 00 if r3 > r2 goto +5 <LBB0_6>
; proto = ip->protocol;
10: 71 12 09 00 00 00 00 00 r2 = *(u8 *)(r1 + 9)
; if (proto != IPPROTO_TCP)
11: 56 02 03 00 06 00 00 00 if w2 != 6 goto +3 <LBB0_6>
; if (tcp->dest != 0)
12: 69 12 16 00 00 00 00 00 r2 = *(u16 *)(r1 + 22)
13: 56 02 01 00 00 00 00 00 if w2 != 0 goto +1 <LBB0_6>
; return tcp->urg_ptr;
14: 69 10 26 00 00 00 00 00 r0 = *(u16 *)(r1 + 38)
0000000000000078 <LBB0_6>:
; }
15: 95 00 00 00 00 00 00 00 exit
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/20201111031213.25109-3-alexei.starovoitov@gmail.com
Alexei Starovoitov [Wed, 11 Nov 2020 03:12:11 +0000 (19:12 -0800)]
bpf: Support for pointers beyond pkt_end.
This patch adds the verifier support to recognize inlined branch conditions.
The LLVM knows that the branch evaluates to the same value, but the verifier
couldn't track it. Hence causing valid programs to be rejected.
The potential LLVM workaround: https://reviews.llvm.org/D87428
can have undesired side effects, since LLVM doesn't know that
skb->data/data_end are being compared. LLVM has to introduce extra boolean
variable and use inline_asm trick to force easier for the verifier assembly.
Instead teach the verifier to recognize that
r1 = skb->data;
r1 += 10;
r2 = skb->data_end;
if (r1 > r2) {
here r1 points beyond packet_end and
subsequent
if (r1 > r2) // always evaluates to "true".
}
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Tested-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/20201111031213.25109-2-alexei.starovoitov@gmail.com
Guillaume Nault [Wed, 11 Nov 2020 15:05:35 +0000 (16:05 +0100)]
selftests: set conf.all.rp_filter=0 in bareudp.sh
When working on the rp_filter problem, I didn't realise that disabling
it on the network devices didn't cover all cases: rp_filter could also
be enabled globally in the namespace, in which case it would drop
packets, even if the net device has rp_filter=0.
Fixes:
1ccd58331f6f ("selftests: disable rp_filter when testing bareudp")
Fixes:
bbbc7aa45eef ("selftests: add test script for bareudp tunnels")
Signed-off-by: Guillaume Nault <gnault@redhat.com>
Link: https://lore.kernel.org/r/f2d459346471f163b239aa9d63ce3e2ba9c62895.1605107012.git.gnault@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jakub Kicinski [Thu, 12 Nov 2020 23:55:25 +0000 (15:55 -0800)]
Merge branch 'mlxsw-spectrum-prepare-for-xm-implementation-prefix-insertion-and-removal'
Ido Schimmel says:
====================
mlxsw: spectrum: Prepare for XM implementation - prefix insertion and removal
Jiri says:
This is a preparation patchset for follow-up support of boards with
extended mezzanine (XM), which is going to allow extended (scale-wise)
router offload.
XM requires a separate PRM register named XMDR to be used instead of
RALUE to insert/update/remove FIB entries. Therefore, this patchset
extends the previously introduces low-level ops to be able to have
XM-specific FIB entry config implementation.
Currently the existing original RALUE implementation is moved to "basic"
low-level ops.
Unlike legacy router, insertion/update/removal of FIB entries into XM
could be done in bulks up to 4 items in a single PRM register write.
That is why this patchset implements "an op context", that allows the
future XM ops implementation to squash multiple FIB events to single
register write. For that, the way in which the FIB events are processed
by the work queue has to be changed.
The conversion from 1:1 FIB event - work callback call to event queue is
implemented in patch #3.
Patch #4 introduces "an op context" that will allow in future to squash
multiple FIB events into one XMDR register write. Patch #12 converts it
from stack to be allocated per instance.
Existing RALUE manipulations are pushed to ops in patch #10.
Patch #13 is introducing a possibility for low-level implementation to
have per FIB entry private memory.
The rest of the patches are either cosmetics or smaller preparations.
====================
Link: https://lore.kernel.org/r/20201110094900.1920158-1-idosch@idosch.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jiri Pirko [Tue, 10 Nov 2020 09:49:00 +0000 (11:49 +0200)]
mlxsw: spectrum_router: Introduce FIB entry update op
Follow-up patchset introducing XMDR implementation is going to need
to distinguish write and update ops. Therefore introduce "update op"
and call "write op" only when new FIB entry is inserted.
Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jiri Pirko [Tue, 10 Nov 2020 09:48:59 +0000 (11:48 +0200)]
mlxsw: spectrum_router: Track FIB entry committed state and skip uncommitted on delete
In case bulking is used, the entry that was previously added may not
be yet committed to the HW as it waits in the queue for bulk send. For
such entries, skip the deletion.
Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jiri Pirko [Tue, 10 Nov 2020 09:48:58 +0000 (11:48 +0200)]
mlxsw: spectrum_router: Introduce fib_entry priv for low-level ops
Prepare for the low-level ops that need to store some data alongside
the fib_entry and introduce a per-fib_entry priv for ll ops.
The priv is reference counted as in the follow-up patch it is going
to be saved in pack() function and used later on in commit() even in
case the related fib_entry gets freed in the middle.
Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jiri Pirko [Tue, 10 Nov 2020 09:48:57 +0000 (11:48 +0200)]
mlxsw: spectrum_router: Have FIB entry op context allocated for the instance
Get the max size needed for FIB entry op context and allocate it once
for the instance. Use it repeatedly from the scheduled work.
By this, allow to extend the context to hold more data than it is wise
to do when it was on the stack. Make sure to signalize that the context
needs to be initialized in case families of subsequent FIB entries differ.
Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jiri Pirko [Tue, 10 Nov 2020 09:48:56 +0000 (11:48 +0200)]
mlxsw: spectrum_router: Prepare work context for possible bulking
For XMDR register it is possible to carry multiple FIB entry
operations in a single write. However the FW does not restrict mixing
the types of operations, make the code easier and indicate the bulking
is ok only in case the bulk contains FIB operations of the same family
and event.
Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jiri Pirko [Tue, 10 Nov 2020 09:48:55 +0000 (11:48 +0200)]
mlxsw: spectrum: Push RALUE packing and writing into low-level router ops
With follow-up introduction of XM implementation, XMDR register is
going to be optionally used instead of RALUE register. Push the RALUE
packing helpers and write call into low-level router ops.
Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jiri Pirko [Tue, 10 Nov 2020 09:48:54 +0000 (11:48 +0200)]
mlxsw: spectrum_router: Use RALUE pack helper from abort function
Unify the RALUE register payload packing and use the
__mlxsw_sp_fib_entry_ralue_pack() helper from
__mlxsw_sp_router_set_abort_trap().
Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jiri Pirko [Tue, 10 Nov 2020 09:48:53 +0000 (11:48 +0200)]
mlxsw: reg: Allow to pass NULL pointer to mlxsw_reg_ralue_pack4/6()
In preparation for the change that is going to be done in the next
patch, allow to pass NULL pointer to mlxsw_reg_ralue_pack4() and
mlxsw_reg_ralue_pack6() helpers.
Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jiri Pirko [Tue, 10 Nov 2020 09:48:52 +0000 (11:48 +0200)]
mlxsw: spectrum_router: Pass destination IP as a pointer to mlxsw_reg_ralue_pack4()
Instead of passing destination IP as a u32 value, pass it as pointer to
u32. Avoid using local variable for the pointer store.
Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jiri Pirko [Tue, 10 Nov 2020 09:48:51 +0000 (11:48 +0200)]
mlxsw: spectrum: Export RALUE pack helper and use it from IPIP
As the RALUE packing is going to be put into op, make the user from
IPIP code use the same helper as the router code does.
Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jiri Pirko [Tue, 10 Nov 2020 09:48:50 +0000 (11:48 +0200)]
mlxsw: spectrum_router: Push out RALUE pack into separate helper
As the RALUE packing is going to be pushed into an op, in preparation
for that push the code into a separate function in the meantime.
Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jiri Pirko [Tue, 10 Nov 2020 09:48:49 +0000 (11:48 +0200)]
mlxsw: spectrum: Propagate context from work handler containing RALUE payload
Currently, RALUE payload is defined locally in the function that is
calling the register write. With introduction of alternative register to
RALUE, XMDR, it has to be possible to put multiple FIB entry
operations into single register write.
So in order to prepare for that, have per-work entry operation context
and propagate it all the way down to the functions writing RALUE.
Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jiri Pirko [Tue, 10 Nov 2020 09:48:48 +0000 (11:48 +0200)]
mlxsw: spectrum_router: Introduce FIB event queue instead of separate works
Currently, every FIB event is queued-up as a separate work to be
processed. However, that allows to process only one FIB entry per work
callback.
In preparation of future XMDR register bulking of multiple FIB entries,
convert to FIB event queue. Implement this by a list_head, adding new
events to the end of the list in the FIB notify callback. That allows to
process multiple events from the list inside the work callback.
Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jiri Pirko [Tue, 10 Nov 2020 09:48:47 +0000 (11:48 +0200)]
mlxsw: spectrum_router: Use RALUE-independent op arg
Since the write/delete of FIB entry is going to be implemented by XMDR
register for XM implementation, introduce RALUE-independent enum for op
so the enum could be used in both RALUE and XMDR.
Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jiri Pirko [Tue, 10 Nov 2020 09:48:46 +0000 (11:48 +0200)]
mlxsw: spectrum_router: Pass non-register proto enum to __mlxsw_sp_router_set_abort_trap()
Don't pass RALXX register enum and rather pass enum mlxsw_sp_l3proto
to __mlxsw_sp_router_set_abort_trap(). This is in preparation to fib
entry pack implementation by XMDR register.
Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Randy Dunlap [Tue, 10 Nov 2020 17:57:46 +0000 (09:57 -0800)]
net: kcov: don't select SKB_EXTENSIONS when there is no NET
Fix kconfig warning when CONFIG_NET is not set/enabled:
WARNING: unmet direct dependencies detected for SKB_EXTENSIONS
Depends on [n]: NET [=n]
Selected by [y]:
- KCOV [=y] && ARCH_HAS_KCOV [=y] && (CC_HAS_SANCOV_TRACE_PC [=y] || GCC_PLUGINS [=n])
Fixes:
6370cc3bbd8a ("net: add kcov handle to skb extensions")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Aleksandr Nogikh <nogikh@google.com>
Cc: Willem de Bruijn <willemb@google.com>
Link: https://lore.kernel.org/r/20201110175746.11437-1-rdunlap@infradead.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jakub Kicinski [Thu, 12 Nov 2020 22:58:27 +0000 (14:58 -0800)]
Merge branch 'net-switch-further-drivers-to-core-functionality-for-handling-per-cpu-byte-packet-counters'
Heiner Kallweit says:
====================
net: switch further drivers to core functionality for handling per-cpu byte/packet counters
Switch further drivers to core functionality for handling per-cpu
byte/packet counters. All changes are compile-tested only.
====================
Link: https://lore.kernel.org/r/5fbe3a1f-6625-eadc-b1c9-f76f78debb94@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Heiner Kallweit [Tue, 10 Nov 2020 19:51:03 +0000 (20:51 +0100)]
net: usb: switch to dev_get_tstats64 and remove usbnet_get_stats64 alias
Replace usbnet_get_stats64() with new identical core function
dev_get_tstats64() in all users and remove usbnet_get_stats64().
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Acked-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Heiner Kallweit [Tue, 10 Nov 2020 19:50:02 +0000 (20:50 +0100)]
usbnet: switch to core handling of rx/tx byte/packet counters
Use netdev->tstats instead of a member of usbnet for storing a pointer
to the per-cpu counters. This allows us to use core functionality for
statistics handling.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Heiner Kallweit [Tue, 10 Nov 2020 19:48:54 +0000 (20:48 +0100)]
qtnfmac: switch to core handling of rx/tx byte/packet counters
Use netdev->tstats instead of a member of qtnf_vif for storing a pointer
to the per-cpu counters. This allows us to use core functionality for
statistics handling.
The driver sets netdev->needs_free_netdev, therefore freeing the per-cpu
counters at the right point in time is a little bit tricky. Best option
seems to be to use the ndo_init/ndo_uninit callbacks.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Acked-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Heiner Kallweit [Tue, 10 Nov 2020 19:48:14 +0000 (20:48 +0100)]
qmi_wwan: switch to core handling of rx/tx byte/packet counters
Use netdev->tstats instead of a member of qmimux_priv for storing
a pointer to the per-cpu counters. This allows us to use core
functionality for statistics handling.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Acked-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Heiner Kallweit [Tue, 10 Nov 2020 19:47:34 +0000 (20:47 +0100)]
IB/hfi1: switch to core handling of rx/tx byte/packet counters
Use netdev->tstats instead of a member of hfi1_ipoib_dev_priv for storing
a pointer to the per-cpu counters. This allows us to use core
functionality for statistics handling.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Acked-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Thierry Reding [Tue, 10 Nov 2020 07:37:57 +0000 (08:37 +0100)]
net: ipconfig: Avoid spurious blank lines in boot log
When dumping the name and NTP servers advertised by DHCP, a blank line
is emitted if either of the lists is empty. This can lead to confusing
issues such as the blank line getting flagged as warning. This happens
because the blank line is the result of pr_cont("\n") and that may see
its level corrupted by some other driver concurrently writing to the
console.
Fix this by making sure that the terminating newline is only emitted
if at least one entry in the lists was printed before.
Reported-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://lore.kernel.org/r/20201110073757.1284594-1-thierry.reding@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jakub Kicinski [Thu, 12 Nov 2020 22:49:42 +0000 (14:49 -0800)]
Merge branch 'smsc-w-1-warning-fixes'
Andrew Lunn says:
====================
smsc W=1 warning fixes
Fixup various W=1 warnings, and then add COMPILE_TEST support, which
explains why these where missed on the previous pass.
v2:
Use while (0)
Rework buffer alignment to make it clearer
v3:
Access the length from the hardware and Use __always_unused to tell the
compiler we want to discard the value.
====================
Link: https://lore.kernel.org/r/20201110030248.1480413-1-andrew@lunn.ch
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Andrew Lunn [Tue, 10 Nov 2020 03:02:48 +0000 (04:02 +0100)]
drivers: net: smsc: Add COMPILE_TEST support
Improve the build testing of these SMSC drivers by enabling them when
COMPILE_TEST is selected.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Andrew Lunn [Tue, 10 Nov 2020 03:02:47 +0000 (04:02 +0100)]
drivers: net: smc911x: Fix cast from pointer to integer of different size
drivers/net/ethernet/smsc/smc911x.c: In function ‘smc911x_hardware_send_pkt’:
drivers/net/ethernet/smsc/smc911x.c:471:11: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
471 | cmdA = (((u32)skb->data & 0x3) << 16) |
When built on 64bit targets, the skb->data pointer cannot be cast to a
u32 in a meaningful way. Use uintptr_t instead.
Suggested-by: Nicolas Pitre <nico@fluxnic.net>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Andrew Lunn [Tue, 10 Nov 2020 03:02:46 +0000 (04:02 +0100)]
drivers: net: smc911x: Fix passing wrong number of parameters to DBG() macro
Now that the compiler always sees the parameters passed to the DBG()
macro, it gives an error message about wrong parameters. The comment
says it all:
/* ndev is not valid yet, so avoid passing it in. */
DBG(SMC_DEBUG_FUNC, "--> %s\n", __func__);
You cannot not just pass a parameter!
The DBG does not seem to have any real value, to just remove it.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Andrew Lunn [Tue, 10 Nov 2020 03:02:45 +0000 (04:02 +0100)]
drivers: net: smc911x: Fix set but unused status because of DBG macro
drivers/net/ethernet/smsc/smc911x.c: In function ‘smc911x_timeout’:
drivers/net/ethernet/smsc/smc911x.c:1251:6: warning: variable ‘status’ set but not used [-Wunused-but-set-variable]
1251 | int status, mask;
The status is read in order to print it via the DBG macro. However,
due to the way DBG is disabled, the compiler never sees it being used.
Change the DBG macro to actually make use of the passed parameters,
and the leave the optimiser to remove the unwanted code inside the
while (0).
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Andrew Lunn [Tue, 10 Nov 2020 03:02:44 +0000 (04:02 +0100)]
drivers: net: smc911x: Work around set but unused status
drivers/net/ethernet/smsc/smc911x.c: In function ‘smc911x_phy_interrupt’:
drivers/net/ethernet/smsc/smc911x.c:976:6: warning: variable ‘status’ set but not used [-Wunused-but-set-variable]
976 | int status;
A comment indicates the status needs to be read from the PHY,
otherwise bad things happen. But due to the macro magic, it is hard to
perform the read without assigning it to a variable. So add
_always_unused attribute to status to tell the compiler we don't
expect to use the value.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Andrew Lunn [Tue, 10 Nov 2020 03:02:43 +0000 (04:02 +0100)]
drivers: net: smc91x: Fix missing kerneldoc reported by W=1
drivers/net/ethernet/smsc/smc91x.c:2199: warning: Function parameter or member 'dev' not described in 'try_toggle_control_gpio'
drivers/net/ethernet/smsc/smc91x.c:2199: warning: Function parameter or member 'desc' not described in 'try_toggle_control_gpio'
drivers/net/ethernet/smsc/smc91x.c:2199: warning: Function parameter or member 'name' not described in 'try_toggle_control_gpio'
drivers/net/ethernet/smsc/smc91x.c:2199: warning: Function parameter or member 'index' not described in 'try_toggle_control_gpio'
drivers/net/ethernet/smsc/smc91x.c:2199: warning: Function parameter or member 'value' not described in 'try_toggle_control_gpio'
drivers/net/ethernet/smsc/smc91x.c:2199: warning: Function parameter or member 'nsdelay' not described in 'try_toggle_control_gpio'
Document these parameters.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Andrew Lunn [Tue, 10 Nov 2020 03:02:42 +0000 (04:02 +0100)]
drivers: net: smc91x: Fix set but unused W=1 warning
drivers/net/ethernet/smsc/smc91x.c:706:51: warning: variable ‘pkt_len’ set but not used [-Wunused-but-set-variable]
706 | unsigned int saved_packet, packet_no, tx_status, pkt_len;
The read of the packet length in the descriptor probably needs to be
kept in order to keep the hardware happy. So tell the compiler we
don't expect to use the value by using the __always_unused attribute.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Menglong Dong [Tue, 10 Nov 2020 02:57:58 +0000 (21:57 -0500)]
net: udp: remove redundant initialization in udp_gro_complete
The initialization for 'err' with '-ENOSYS' is redundant and
can be removed, as it is updated soon and not used.
Changes since v1:
- Move the err declaration below struct sock *sk
Signed-off-by: Menglong Dong <dong.menglong@zte.com.cn>
Link: https://lore.kernel.org/r/5faa01d5.1c69fb81.8451c.cb5b@mx.google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jakub Kicinski [Thu, 12 Nov 2020 22:33:13 +0000 (14:33 -0800)]
Merge branch 'xilinx_emaclite-w-1-fixes'
Andrew Lunn says:
====================
xilinx_emaclite W=1 fixes
kerneldoc, pointer issues, and add COMPILE_TEST support to easy
finding future issues via build testing.
v2:
- Use uintptr_t instead of long
- Added Acked-by's.
====================
Link: https://lore.kernel.org/r/20201110024024.1479741-1-andrew@lunn.ch
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Andrew Lunn [Tue, 10 Nov 2020 02:40:24 +0000 (03:40 +0100)]
drivers: net: xilinx_emaclite: Add COMPILE_TEST support
To improve build testing of this driver, add COMPILE_TEST support.
Acked-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Andrew Lunn [Tue, 10 Nov 2020 02:40:23 +0000 (03:40 +0100)]
drivers: net: xilinx_emaclite: Fix -Wpointer-to-int-cast warnings with W=1
drivers/net/ethernet//xilinx/xilinx_emaclite.c:341:35: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
341 | addr = (void __iomem __force *)((u32 __force)addr ^
Use uintptr_t instead of u32 to avoid problems on 64 bit systems.
Also, cast the address to an unsigned long for printing.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Andrew Lunn [Tue, 10 Nov 2020 02:40:22 +0000 (03:40 +0100)]
drivers: net: xilinx_emaclite: Add missing parameter kerneldoc
The txqueue parameter to the watchdog callback is unused in this
driver. But it still needs to be documented.
Reviewed-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Linus Torvalds [Thu, 12 Nov 2020 22:02:04 +0000 (14:02 -0800)]
Merge tag 'net-5.10-rc4' of git://git./linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Current release - regressions:
- arm64: dts: fsl-ls1028a-kontron-sl28: specify in-band mode for
ENETC
Current release - bugs in new features:
- mptcp: provide rmem[0] limit offset to fix oops
Previous release - regressions:
- IPv6: Set SIT tunnel hard_header_len to zero to fix path MTU
calculations
- lan743x: correctly handle chips with internal PHY
- bpf: Don't rely on GCC __attribute__((optimize)) to disable GCSE
- mlx5e: Fix VXLAN port table synchronization after function reload
Previous release - always broken:
- bpf: Zero-fill re-used per-cpu map element
- fix out-of-order UDP packets when forwarding with UDP GSO fraglists
turned on:
- fix UDP header access on Fast/frag0 UDP GRO
- fix IP header access and skb lookup on Fast/frag0 UDP GRO
- ethtool: netlink: add missing netdev_features_change() call
- net: Update window_clamp if SOCK_RCVBUF is set
- igc: Fix returning wrong statistics
- ch_ktls: fix multiple leaks and corner cases in Chelsio TLS offload
- tunnels: Fix off-by-one in lower MTU bounds for ICMP/ICMPv6 replies
- r8169: disable hw csum for short packets on all chip versions
- vrf: Fix fast path output packet handling with async Netfilter
rules"
* tag 'net-5.10-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (65 commits)
lan743x: fix use of uninitialized variable
net: udp: fix IP header access and skb lookup on Fast/frag0 UDP GRO
net: udp: fix UDP header access on Fast/frag0 UDP GRO
devlink: Avoid overwriting port attributes of registered port
vrf: Fix fast path output packet handling with async Netfilter rules
cosa: Add missing kfree in error path of cosa_write
net: switch to the kernel.org patchwork instance
ch_ktls: stop the txq if reaches threshold
ch_ktls: tcb update fails sometimes
ch_ktls/cxgb4: handle partial tag alone SKBs
ch_ktls: don't free skb before sending FIN
ch_ktls: packet handling prior to start marker
ch_ktls: Correction in middle record handling
ch_ktls: missing handling of header alone
ch_ktls: Correction in trimmed_len calculation
cxgb4/ch_ktls: creating skbs causes panic
ch_ktls: Update cheksum information
ch_ktls: Correction in finding correct length
cxgb4/ch_ktls: decrypted bit is not enough
net/x25: Fix null-ptr-deref in x25_connect
...
Linus Torvalds [Thu, 12 Nov 2020 21:49:12 +0000 (13:49 -0800)]
Merge tag 'nfs-for-5.10-2' of git://git.linux-nfs.org/projects/anna/linux-nfs
Pull NFS client bugfixes from Anna Schumaker:
"Stable fixes:
- Fix failure to unregister shrinker
Other fixes:
- Fix unnecessary locking to clear up some contention
- Fix listxattr receive buffer size
- Fix default mount options for nfsroot"
* tag 'nfs-for-5.10-2' of git://git.linux-nfs.org/projects/anna/linux-nfs:
NFS: Remove unnecessary inode lock in nfs_fsync_dir()
NFS: Remove unnecessary inode locking in nfs_llseek_dir()
NFS: Fix listxattr receive buffer size
NFSv4.2: fix failure to unregister shrinker
nfsroot: Default mount option should ask for built-in NFS version
Jean-Philippe Brucker [Thu, 12 Nov 2020 09:10:52 +0000 (10:10 +0100)]
tools/bpf: Always run the *-clean recipes
Make $(LIBBPF)-clean and $(LIBBPF_BOOTSTRAP)-clean .PHONY targets, in
case those files exist. And keep consistency within the Makefile by
making the directory dependencies order-only.
Suggested-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20201112091049.3159055-2-jean-philippe@linaro.org
Jean-Philippe Brucker [Thu, 12 Nov 2020 09:10:50 +0000 (10:10 +0100)]
tools/bpf: Add bootstrap/ to .gitignore
Commit
8859b0da5aac ("tools/bpftool: Fix cross-build") added a
build-time bootstrap/ directory for bpftool, and removed
bpftool-bootstrap. Update .gitignore accordingly.
Reported-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20201112091049.3159055-1-jean-philippe@linaro.org
Linus Torvalds [Thu, 12 Nov 2020 19:06:53 +0000 (11:06 -0800)]
Merge tag 'acpi-5.10-rc4' of git://git./linux/kernel/git/rafael/linux-pm
Pull ACPI fixes from Rafael Wysocki:
"These are mostly docmentation fixes and janitorial changes plus some
new device IDs and a new quirk.
Specifics:
- Fix documentation regarding GPIO properties (Andy Shevchenko)
- Fix spelling mistakes in ACPI documentation (Flavio Suligoi)
- Fix white space inconsistencies in ACPI code (Maximilian Luz)
- Fix string formatting in the ACPI Generic Event Device (GED) driver
(Nick Desaulniers)
- Add Intel Alder Lake device IDs to the ACPI drivers used by the
Dynamic Platform and Thermal Framework (Srinivas Pandruvada)
- Add lid-related DMI quirk for Medion Akoya E2228T to the ACPI
button driver (Hans de Goede)"
* tag 'acpi-5.10-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI: DPTF: Support Alder Lake
Documentation: ACPI: fix spelling mistakes
ACPI: button: Add DMI quirk for Medion Akoya E2228T
ACPI: GED: fix -Wformat
ACPI: Fix whitespace inconsistencies
ACPI: scan: Fix acpi_dma_configure_id() kerneldoc name
Documentation: firmware-guide: gpio-properties: Clarify initial output state
Documentation: firmware-guide: gpio-properties: active_low only for GpioIo()
Documentation: firmware-guide: gpio-properties: Fix factual mistakes
Linus Torvalds [Thu, 12 Nov 2020 19:03:38 +0000 (11:03 -0800)]
Merge tag 'pm-5.10-rc4' of git://git./linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki:
"Make the intel_pstate driver behave as expected when it operates in
the passive mode with HWP enabled and the 'powersave' governor on top
of it"
* tag 'pm-5.10-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
cpufreq: intel_pstate: Take CPUFREQ_GOV_STRICT_TARGET into account
cpufreq: Add strict_target to struct cpufreq_policy
cpufreq: Introduce CPUFREQ_GOV_STRICT_TARGET
cpufreq: Introduce governor flags
YueHaibing [Thu, 12 Nov 2020 14:58:52 +0000 (22:58 +0800)]
nfp: Fix passing zero to 'PTR_ERR'
nfp_cpp_from_nfp6000_pcie() returns ERR_PTR() and never returns
NULL. The NULL test should be removed, also return correct err.
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Link: https://lore.kernel.org/r/20201112145852.6580-1-yuehaibing@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Sven Van Asbroeck [Thu, 12 Nov 2020 15:25:13 +0000 (10:25 -0500)]
lan743x: fix use of uninitialized variable
When no devicetree is present, the driver will use an
uninitialized variable.
Fix by initializing this variable.
Fixes:
902a66e08cea ("lan743x: correctly handle chips with internal PHY")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Sven Van Asbroeck <thesven73@gmail.com>
Link: https://lore.kernel.org/r/20201112152513.1941-1-TheSven73@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jakub Kicinski [Thu, 12 Nov 2020 17:55:58 +0000 (09:55 -0800)]
Merge branch 'net-udp-fix-fast-frag0-udp-gro'
Alexander Lobakin says:
====================
net: udp: fix Fast/frag0 UDP GRO
While testing UDP GSO fraglists forwarding through driver that uses
Fast GRO (via napi_gro_frags()), I was observing lots of out-of-order
iperf packets:
[ ID] Interval Transfer Bitrate Jitter
[SUM] 0.0-40.0 sec 12106 datagrams received out-of-order
Simple switch to napi_gro_receive() or any other method without frag0
shortcut completely resolved them.
I've found two incorrect header accesses in GRO receive callback(s):
- udp_hdr() (instead of udp_gro_udphdr()) that always points to junk
in "fast" mode and could probably do this in "regular".
This was the actual bug that caused all out-of-order delivers;
- udp{4,6}_lib_lookup_skb() -> ip{,v6}_hdr() (instead of
skb_gro_network_header()) that potentionally might return odd
pointers in both modes.
Each patch addresses one of these two issues.
This doesn't cover a support for nested tunnels as it's out of the
subject and requires more invasive changes. It will be handled
separately in net-next series.
Credits:
Cc: Eric Dumazet <edumazet@google.com>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Willem de Bruijn <willemb@google.com>
Since v4 [0]:
- split the fix into two logical ones (Willem);
- replace ternaries with plain ifs to beautify the code (Jakub);
- drop p->data part to reintroduce it later in abovementioned set.
Since v3 [1]:
- restore the original {,__}udp{4,6}_lib_lookup_skb() and use
private versions of them inside GRO code (Willem).
Since v2 [2]:
- dropped redundant check introduced in v2 as it's performed right
before (thanks to Eric);
- udp_hdr() switched to data + off for skbs from list (also Eric);
- fixed possible malfunction of {,__}udp{4,6}_lib_lookup_skb() with
Fast/frag0 due to ip{,v6}_hdr() usage (Willem).
Since v1 [3]:
- added a NULL pointer check for "uh" as suggested by Willem.
[0] https://lore.kernel.org/netdev/Ha2hou5eJPcblo4abjAqxZRzIl1RaLs2Hy0oOAgFs@cp4-web-036.plabs.ch
[1] https://lore.kernel.org/netdev/MgZce9htmEtCtHg7pmWxXXfdhmQ6AHrnltXC41zOoo@cp7-web-042.plabs.ch
[2] https://lore.kernel.org/netdev/0eaG8xtbtKY1dEKCTKUBubGiC9QawGgB3tVZtNqVdY@cp4-web-030.plabs.ch
[3] https://lore.kernel.org/netdev/YazU6GEzBdpyZMDMwJirxDX7B4sualpDG68ADZYvJI@cp4-web-034.plabs.ch
====================
Link: https://lore.kernel.org/r/hjGOh0iCOYyo1FPiZh6TMXcx3YCgNs1T1eGKLrDz8@cp4-web-037.plabs.ch
Signed-off-by: Jakub Kicinski <kuba@kernel.org>