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We have many lockless accesses to n->nud_state.
Before adding another one in the following patch,
add annotations to readers and writers.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Reviewed-by: Martin KaFai Lau <martin.lau@kernel.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
As the function always returns 0 change the return type to be
void instead of int. In this way also remove a wrong message
in case of error which would never happen.
Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Reviewed-by: Alvin Šipraga <alsi@bang-olufsen.dk>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Link: https://lore.kernel.org/r/20230312195155.1492881-1-horatiu.vultur@microchip.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
It is preferred to use typed property access functions (i.e.
of_property_read_<type> functions) rather than low-level
of_get_property/of_find_property functions for reading properties. As
part of this, convert of_get_property/of_find_property calls to the
recently added of_property_present() helper when we just want to test
for presence of a property and nothing more.
Signed-off-by: Rob Herring <robh@kernel.org>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Acked-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230310144716.1544083-1-robh@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Tony Nguyen says:
====================
i40e: support XDP multi-buffer
Tirthendu Sarkar says:
This patchset adds multi-buffer support for XDP. Tx side already has
support for multi-buffer. This patchset focuses on Rx side. The last
patch contains actual multi-buffer changes while the previous ones are
preparatory patches.
On receiving the first buffer of a packet, xdp_buff is built and its
subsequent buffers are added to it as frags. While 'next_to_clean' keeps
pointing to the first descriptor, the newly introduced 'next_to_process'
keeps track of every descriptor for the packet.
On receiving EOP buffer the XDP program is called and appropriate action
is taken (building skb for XDP_PASS, reusing page for XDP_DROP, adjusting
page offsets for XDP_{REDIRECT,TX}).
The patchset also streamlines page offset adjustments for buffer reuse
to make it easier to post process the rx_buffers after running XDP prog.
With this patchset there does not seem to be any performance degradation
for XDP_PASS and some improvement (~1% for XDP_TX, ~5% for XDP_DROP) when
measured using xdp_rxq_info program from samples/bpf/ for 64B packets.
v1: https://lore.kernel.org/netdev/20230306210822.3381942-1-anthony.l.nguyen@intel.com/
* '40GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue:
i40e: add support for XDP multi-buffer Rx
i40e: add xdp_buff to i40e_ring struct
i40e: introduce next_to_process to i40e_ring
i40e: use frame_sz instead of recalculating truesize for building skb
i40e: Change size to truesize when using i40e_rx_buffer_flip()
i40e: add pre-xdp page_count in rx_buffer
i40e: change Rx buffer size for legacy-rx to support XDP multi-buffer
i40e: consolidate maximum frame size calculation for vsi
====================
Link: https://lore.kernel.org/r/20230309212819.1198218-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Add tests that check if filters can bind actions, that is create an
action independently and then bind to a filter.
tdc-tests under category 'infra':
1..18
ok 1 abdc - Reference pedit action object in filter
ok 2 7a70 - Reference mpls action object in filter
ok 3 d241 - Reference bpf action object in filter
ok 4 383a - Reference connmark action object in filter
ok 5 c619 - Reference csum action object in filter
ok 6 a93d - Reference ct action object in filter
ok 7 8bb5 - Reference ctinfo action object in filter
ok 8 2241 - Reference gact action object in filter
ok 9 35e9 - Reference gate action object in filter
ok 10 b22e - Reference ife action object in filter
ok 11 ef74 - Reference mirred action object in filter
ok 12 2c81 - Reference nat action object in filter
ok 13 ac9d - Reference police action object in filter
ok 14 68be - Reference sample action object in filter
ok 15 cf01 - Reference skbedit action object in filter
ok 16 c109 - Reference skbmod action object in filter
ok 17 4abc - Reference tunnel_key action object in filter
ok 18 dadd - Reference vlan action object in filter
Reviewed-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Pedro Tammela <pctammela@mojatatu.com>
Link: https://lore.kernel.org/r/20230309175554.304824-1-pctammela@mojatatu.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The value of an arithmetic expression is subject
of possible overflow due to a failure to cast operands to a larger data
type before performing arithmetic. Used macro for multiplication instead
operator for avoiding overflow.
Found by Security Code and Linux Verification
Center (linuxtesting.org) with SVACE.
Signed-off-by: Maxim Korotkov <korotkov.maxim.s@gmail.com>
Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Link: https://lore.kernel.org/r/20230309174347.3515-1-korotkov.maxim.s@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Virtio spec introduced a feature VIRTIO_NET_F_GUEST_HDRLEN which when
set implicates that device benefits from knowing the exact size
of the header. For compatibility, to signal to the device that
the header is reliable driver also needs to set this feature.
Without this feature set by driver, device has to figure
out the header size itself.
Quoting the original virtio spec:
"hdr_len is a hint to the device as to how much of the header needs to
be kept to copy into each packet"
"a hint" might not be clear for the reader what does it mean, if it is
"maybe like that" of "exactly like that". This feature just makes it
crystal clear and let the device count on the hdr_len being filled up
by the exact length of header.
Also note the spec already has following note about hdr_len:
"Due to various bugs in implementations, this field is not useful
as a guarantee of the transport header size."
Without this feature the device needs to parse the header in core
data path handling. Accurate information helps the device to eliminate
such header parsing and directly use the hardware accelerators
for GSO operation.
virtio_net_hdr_from_skb() fills up hdr_len to skb_headlen(skb).
The driver already complies to fill the correct value. Introduce the
feature and advertise it.
Note that virtio spec also includes following note for device
implementation:
"Caution should be taken by the implementation so as to prevent
a malicious driver from attacking the device by setting
an incorrect hdr_len."
There is a plan to support this feature in our emulated device.
A device of SolidRun offers this feature bit. They claim this feature
will save the device a few cycles for every GSO packet.
Link: https://docs.oasis-open.org/virtio/virtio/v1.2/cs01/virtio-v1.2-cs01.html#x1-230006x3
Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Reviewed-by: Parav Pandit <parav@nvidia.com>
Reviewed-by: Alvaro Karsz <alvaro.karsz@solid-run.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Link: https://lore.kernel.org/r/20230309094559.917857-1-jiri@resnulli.us
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
If no frames has been exchanged with a node for HSR_NODE_FORGET_TIME, the
node will be deleted from the node_db list. If a frame is sent to the node
after it is deleted, a netdev_err message for each slave interface is
produced. This should not happen with dan nodes because of supervision
frames, but can happen often with san nodes, which clutters the kernel
log. Since the hsr protocol does not support sans, this is only relevant
for the prp protocol.
Signed-off-by: Kristian Overskeid <koverskeid@gmail.com>
Link: https://lore.kernel.org/r/20230309092302.179586-1-koverskeid@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
suppress unused warnings and fix the error that there is
with the W=1 enabled.
Warning generated
net/socket.c: In function ‘__sys_getsockopt’:
net/socket.c:2300:13: error: variable ‘max_optlen’ set but not used [-Werror=unused-but-set-variable]
2300 | int max_optlen;
Signed-off-by: Vincenzo Palazzo <vincenzopalazzodev@gmail.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Link: https://lore.kernel.org/r/20230310221851.304657-1-vincenzopalazzodev@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Before putting the PHY into IEEE power down mode, disable IRQs to
prevent accessing the PHY once MDIO has already been shutdown.
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20230310074500.3472858-1-alexander.stein@ew.tq-group.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Lan8841 has 10 GPIOs and it has 2 events(EVENT_A and EVENT_B). It is
possible to assigned the 2 events to any of the GPIOs, but a GPIO can
have only 1 event at a time.
These events are used to generate periodic signals. It is possible to
configure the length, the start time and the period of the signal by
configuring the event.
Currently the SW uses only EVENT_A to generate the perout.
These events are generated by comparing the target time with the PHC
time. In case the PHC time is changed to a value bigger than the target
time + reload time, then it would generate only 1 event and then it
would stop because target time + reload time is small than PHC time.
Therefore it is required to change also the target time every time when
the PHC is changed. The same will apply also when the PHC time is
changed to a smaller value.
This was tested using:
testptp -L 6,2
testptp -p 1000000000 -w 200000000
Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Link: https://lore.kernel.org/r/20230307214402.793057-1-horatiu.vultur@microchip.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
make versioncheck reports the following:
./drivers/net/ethernet/qlogic/qede/qede.h: 10 linux/version.h not needed.
./drivers/net/ethernet/qlogic/qede/qede_ethtool.c: 7 linux/version.h not needed.
So remove linux/version.h from both of these files. Also remove
linux/compiler.h while at it as it is also not being used.
Signed-off-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Link: https://lore.kernel.org/r/20230309225206.2473644-1-usama.anjum@collabora.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
EF100 can pop and/or push up to two VLAN tags.
Signed-off-by: Edward Cree <ecree.xilinx@gmail.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Link: https://lore.kernel.org/r/20230309115904.56442-1-edward.cree@amd.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The bindings for the am65-cpsw driver use the name "serdes" to refer to
the Serdes PHY. Thus, update the name used for the Serdes PHY within the
am65_cpsw_init_serdes_phy() function from "serdes-phy" to "serdes".
Signed-off-by: Siddharth Vadapalli <s-vadapalli@ti.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Update bindings to include Serdes PHY as an optional PHY, in addition to
the existing CPSW MAC's PHY. The CPSW MAC's PHY is required while the
Serdes PHY is optional. The Serdes PHY handle has to be provided only
when the Serdes is being configured in a Single-Link protocol. Using the
name "serdes-phy" to represent the Serdes PHY handle, the am65-cpsw-nuss
driver can obtain the Serdes PHY and request the Serdes to be
configured.
Signed-off-by: Siddharth Vadapalli <s-vadapalli@ti.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Flashing firmware via devlink flash was failing on PTP OCP devices
because it is using Quad SPI mode, but the driver was not properly
behaving. With force_irq flag landed it now can be fixed.
Signed-off-by: Vadim Fedorenko <vadfed@meta.com>
Link: https://lore.kernel.org/r/20230309105421.2953451-1-vadfed@meta.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Major changes:
cfg80211
* 6 GHz improvements
* HW timestamping support
* support for randomized auth/deauth TA for PASN privacy
(also for mac80211)
mac80211
* radiotap TLV and EHT support for the iwlwifi sniffer
* HW timestamping support
* per-link debugfs for multi-link
brcmfmac
* support for Apple (M1 Pro/Max) devices
iwlwifi
* support for a few new devices
* EHT sniffer support
rtw88
* better support for some SDIO devices
(e.g. MAC address from efuse)
rtw89
* HW scan support for 8852b
* better support for 6 GHz scanning
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Merge tag 'wireless-next-2023-03-10' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next
Johannes Berg says:
====================
wireless-next patches for 6.4
Major changes:
cfg80211
* 6 GHz improvements
* HW timestamping support
* support for randomized auth/deauth TA for PASN privacy
(also for mac80211)
mac80211
* radiotap TLV and EHT support for the iwlwifi sniffer
* HW timestamping support
* per-link debugfs for multi-link
brcmfmac
* support for Apple (M1 Pro/Max) devices
iwlwifi
* support for a few new devices
* EHT sniffer support
rtw88
* better support for some SDIO devices
(e.g. MAC address from efuse)
rtw89
* HW scan support for 8852b
* better support for 6 GHz scanning
* tag 'wireless-next-2023-03-10' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next: (84 commits)
wifi: iwlwifi: mvm: fix EOF bit reporting
wifi: iwlwifi: Do not include radiotap EHT user info if not needed
wifi: iwlwifi: mvm: add EHT RU allocation to radiotap
wifi: iwlwifi: Update logs for yoyo reset sw changes
wifi: iwlwifi: mvm: clean up duplicated defines
wifi: iwlwifi: rs-fw: break out for unsupported bandwidth
wifi: iwlwifi: Add support for B step of BnJ-Fm4
wifi: iwlwifi: mvm: make flush code a bit clearer
wifi: iwlwifi: mvm: avoid UB shift of snif_queue
wifi: iwlwifi: mvm: add primary 80 known for EHT radiotap
wifi: iwlwifi: mvm: parse FW frame metadata for EHT sniffer mode
wifi: iwlwifi: mvm: decode USIG_B1_B7 RU to nl80211 RU width
wifi: iwlwifi: mvm: rename define to generic name
wifi: iwlwifi: mvm: allow Microsoft to use TAS
wifi: iwlwifi: mvm: add all EHT based on data0 info from HW
wifi: iwlwifi: mvm: add EHT radiotap info based on rate_n_flags
wifi: iwlwifi: mvm: add an helper function radiotap TLVs
wifi: radiotap: separate vendor TLV into header/content
wifi: iwlwifi: reduce verbosity of some logging events
wifi: iwlwifi: Adding the code to get RF name for MsP device
...
====================
Link: https://lore.kernel.org/r/20230310120159.36518-1-johannes@sipsolutions.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Russell King says:
====================
Rework SFP A2 access conditionals
This series reworks the SFP A2 (diagnostics and control) access so we
don't end up testing a variable number of conditions in several places.
This also resolves a minor issue where we may have a module indicating
that it is not SFF8472 compliant, doesn't implement A2, but fails to
set the enhanced option byte to zero, leading to accesses to the A2
page that fail.
The first patch adds a new flag "have_a2" which indicates whether we
should be accessing the A2 page, and uses this for hwmon. The
conditions are kept the same.
The second patch extends the check for soft-state polling and control
by using this "have_a2" flag (which effectively augments the check to
include some level of SFF8472 compliance.)
====================
Link: https://lore.kernel.org/r/ZAoBnqGBnIZzLwpV@shell.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The soft state bits are stored in the A2h memory space, and require
SFF-8472 compliance. This is what our have_a2 flag tells us, so use
this to indicate whether we should attempt to use the soft signals.
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The hwmon code wants to know when it is safe to access the A2h data
stored in a separate address. We indicate that this is present when
we have SFF-8472 compliance and the lack of an address-change
sequence.,
The same conditions are also true if we want to access other controls
and status in the A2h address. So let's make a flag to indicate whether
we can access it, instead of repeating the conditions throughout the
code.
For now, only convert the hwmon code.
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Gal Pressman says:
====================
Couple of minor improvements to build_skb variants
First patch replaces open-coded occurrences of
skb_propagate_pfmemalloc() in build_skb() and build_skb_around().
The secnod patch adds a likely() to the skb allocation in build_skb().
====================
Link: https://lore.kernel.org/r/20230308131720.2103611-1-gal@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Similarly to napi_build_skb(), it is likely the skb allocation in
build_skb() succeeded. frag_size != 0 is also likely, as stated in
__build_skb_around().
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Gal Pressman <gal@nvidia.com>
Reviewed-by: Larysa Zaremba <larysa.zaremba@intel.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Use skb_propagate_pfmemalloc() in build_skb()/build_skb_around() instead
of open-coding it.
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Gal Pressman <gal@nvidia.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The tap driver already supports passing in nonblocking state based
on O_NONBLOCK, add support for checking IOCB_NOWAIT as well. With that
done, we can flag it with FMODE_NOWAIT as well.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Link: https://lore.kernel.org/r/8f859870-e6e2-09ca-9c0f-a2aa7c984fb2@kernel.dk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
tun already checks for both O_NONBLOCK and IOCB_NOWAIT in its read
and write iter handlers, so it's fully ready for FMODE_NOWAIT. But
for some reason it doesn't set it. Rectify that oversight.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Link: https://lore.kernel.org/r/3f7dc1f0-79ca-d85c-4d16-8c12c5bd492d@kernel.dk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Horatiu Vultur says:
====================
net: lan966x: Add support for IS1 VCAP
Provide the Ingress Stage 1 (IS1) VCAP (Versatile Content-Aware
Processor) support for the Lan966x platform.
The IS1 VCAP has 3 lookups and they are accessible with a TC chain id:
- chain 1000000: IS1 Lookup 0
- chain 1100000: IS1 Lookup 1
- chain 1200000: IS1 Lookup 2
The IS1 is capable of different actions like rewrite VLAN tags, change
priority of the frames, police the traffic, etc. These features will be
added at a later point.
The IS1 currently implements the action that allows setting the value
of a PAG (Policy Association Group) key field in the frame metadata and
this can be used for matching in an IS2 VCAP rule. In this way a rule in
IS0 VCAP can be linked to rules in the IS2 VCAP. The linking is exposed
by using the TC "goto chain" action with an offset from the IS2 chain ids.
For example "goto chain 8000001" will use a PAG value of 1 to chain to a
rule in IS2 lookup 0.
====================
Link: https://lore.kernel.org/r/20230307220929.834219-1-horatiu.vultur@microchip.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
IS1 VCAP has it's own list of supported ethernet protocol types which is
different than the IS2 VCAP. Therefore separate the list of known
protocol types based on the VCAP type.
Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Allow rules to be chained between IS1 VCAP and IS2 VCAP. Chaining
between IS1 lookups or between IS2 lookups are not supported by the
hardware.
Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Add IS1 VCAP port keyset configuration for lan966x and also update debug
fs support to show the keyset configuration.
Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Provide IS1 (ingress stage 1) VCAP model for lan966x.
This provides classification actions for lan966x.
Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
NVMEM layouts are no longer registered early, and thus may not yet be
available when Ethernet drivers (or any other consumer) probe, leading
to possible probe deferrals errors. Forward the error code if this
happens. All other errors being discarded, the driver will eventually
use a random MAC address if no other source was considered valid (no
functional change on this regard).
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Marcin Wojtas <mw@semihalf.com>
Link: https://lore.kernel.org/r/20230307192927.512757-1-miquel.raynal@bootlin.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The filename "wangxun" sorts between "intel" and "xscale", but
xscale/Kconfig contains "Intel XScale" prompts, so Wangxun ends up in the
wrong place in the config front-ends.
Move wangxun/Kconfig so the Wangxun devices appear in order in the user
interface.
Fixes: 3ce7547e5b71 ("net: txgbe: Add build support for txgbe")
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://lore.kernel.org/r/20230307221051.890135-1-helgaas@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Tony Nguyen says:
====================
Intel Wired LAN Driver Updates 2023-03-07 (igc)
This series contains updates to igc driver only.
Muhammad adds tracking and reporting of QBV config errors.
Tan Tee adds support for configuring max SDU for each Tx queue.
Sasha removes check for alternate media as only one media type is
supported.
* '1GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue:
igc: Clean up and optimize watchdog task
igc: offload queue max SDU from tc-taprio
igc: Add qbv_config_change_errors counter
====================
Link: https://lore.kernel.org/r/20230307221332.3997881-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Florian Westphal says:
====================
Netfilter updates for net-next
1. nf_tables 'brouting' support, from Sriram Yagnaraman.
2. Update bridge netfilter and ovs conntrack helpers to handle
IPv6 Jumbo packets properly, i.e. fetch the packet length
from hop-by-hop extension header, from Xin Long.
This comes with a test BIG TCP test case, added to
tools/testing/selftests/net/.
3. Fix spelling and indentation in conntrack, from Jeremy Sowden.
* 'main' of git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf-next:
netfilter: nat: fix indentation of function arguments
netfilter: conntrack: fix typo
selftests: add a selftest for big tcp
netfilter: use nf_ip6_check_hbh_len in nf_ct_skb_network_trim
netfilter: move br_nf_check_hbh_len to utils
netfilter: bridge: move pskb_trim_rcsum out of br_nf_check_hbh_len
netfilter: bridge: check len before accessing more nh data
netfilter: bridge: call pskb_may_pull in br_nf_check_hbh_len
netfilter: bridge: introduce broute meta statement
====================
Link: https://lore.kernel.org/r/20230308193033.13965-1-fw@strlen.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
neigh_lookup_nodev isn't used in the kernel after removal
of DECnet. So let's remove it.
Fixes: 1202cdd66531 ("Remove DECnet support from kernel")
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Nikolay Aleksandrov <razor@blackwall.org>
Link: https://lore.kernel.org/r/eb5656200d7964b2d177a36b77efa3c597d6d72d.1678267343.git.leonro@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Since commit 8b41fc4454e ("kbuild: create modules.builtin without
Makefile.modbuiltin or tristate.conf"), MODULE_LICENSE declarations
are used to identify modules. As a consequence, uses of the macro
in non-modules will cause modprobe to misidentify their containing
object file as a module when it is not (false positives), and modprobe
might succeed rather than failing with a suitable error message.
So remove it in the files in this commit, none of which can be built as
modules.
Signed-off-by: Nick Alcock <nick.alcock@oracle.com>
Suggested-by: Luis Chamberlain <mcgrof@kernel.org>
Cc: Hitomi Hasegawa <hasegawa-hitomi@fujitsu.com>
Cc: Vladimir Oltean <olteanv@gmail.com>
Link: https://lore.kernel.org/r/20230308121230.5354-1-nick.alcock@oracle.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Since commit 8b41fc4454e ("kbuild: create modules.builtin without
Makefile.modbuiltin or tristate.conf"), MODULE_LICENSE declarations
are used to identify modules. As a consequence, uses of the macro
in non-modules will cause modprobe to misidentify their containing
object file as a module when it is not (false positives), and modprobe
might succeed rather than failing with a suitable error message.
So remove it in the files in this commit, none of which can be built as
modules.
Signed-off-by: Nick Alcock <nick.alcock@oracle.com>
Suggested-by: Luis Chamberlain <mcgrof@kernel.org>
Cc: Hitomi Hasegawa <hasegawa-hitomi@fujitsu.com>
Cc: Jeremy Kerr <jk@codeconstruct.com.au>
Cc: Matt Johnston <matt@codeconstruct.com.au>
Link: https://lore.kernel.org/r/20230308121230.5354-2-nick.alcock@oracle.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Documentation/bpf/bpf_devel_QA.rst
b7abcd9c656b ("bpf, doc: Link to submitting-patches.rst for general patch submission info")
d56b0c461d19 ("bpf, docs: Fix link to netdev-FAQ target")
https://lore.kernel.org/all/20230307095812.236eb1be@canb.auug.org.au/
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This patch adds multi-buffer support for the i40e_driver.
i40e_clean_rx_irq() is modified to collate all the buffers of a packet
before calling the XDP program. xdp_buff is built for the first frag of
the packet and subsequent frags are added to it. 'next_to_process' is
incremented for all non-EOP frags while 'next_to_clean' stays at the
first descriptor of the packet. XDP program is called only on receiving
EOP frag.
New functions are added for adding frags to xdp_buff and for post
processing of the buffers once the xdp prog has run. For XDP_PASS this
results in a skb with multiple fragments.
i40e_build_skb() builds the skb around xdp buffer that already contains
frags data. So i40e_add_rx_frag() helper function is now removed. Since
fields before 'dataref' in skb_shared_info are cleared during
napi_skb_build(), xdp_update_skb_shared_info() is called to set those.
For i40e_construct_skb(), all the frags data needs to be copied from
xdp_buffer's shared_skb_info to newly constructed skb's shared_skb_info.
This also means 'skb' does not need to be preserved across i40e_napi_poll()
calls and hence is removed from i40e_ring structure.
Previously i40e_alloc_rx_buffers() was called for every 32 cleaned
buffers. For multi-buffers this may not be optimal as there may be more
cleaned buffers in each i40e_clean_rx_irq() call. So this is now called
when at least half of the ring size has been cleaned.
Signed-off-by: Tirthendu Sarkar <tirthendu.sarkar@intel.com>
Tested-by: Chandan Kumar Rout <chandanx.rout@intel.com> (A Contingent Worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Store xdp_buff on Rx ring struct in preparation for XDP multi-buffer
support. This will allow us to combine fragmented frames across
separate NAPI cycles in the same way as currently skb fragments are
handled. This means that skb pointer on Rx ring will become redundant
and will be removed in a later patch. As a consequence i40e_trace() now
uses xdp instead of skb pointer.
Truesize only needs to be calculated for page sizes bigger than 4k as it
is always half-page for 4k pages. With xdp_buff on ring, frame size can
now be set during xdp_init_buff() and need not be repopulated in each
NAPI call for 4k pages. As a consequence i40e_rx_frame_truesize() is now
used only for bigger pages.
Signed-off-by: Tirthendu Sarkar <tirthendu.sarkar@intel.com>
Tested-by: Chandan Kumar Rout <chandanx.rout@intel.com> (A Contingent Worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Add a new field called next_to_process in the i40e_ring that is
advanced for every buffer and change the semantics of next_to_clean to
point to the first buffer of a packet. Driver will use next_to_process
in the same way next_to_clean was used previously.
For the non multi-buffer case, next_to_process and next_to_clean will
always be the same since each packet consists of a single buffer.
Signed-off-by: Tirthendu Sarkar <tirthendu.sarkar@intel.com>
Tested-by: Chandan Kumar Rout <chandanx.rout@intel.com> (A Contingent Worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
In skb path truesize is calculated while building skb. This is now
avoided and xdp->frame_is used instead for both i40e_build_skb() and
i40e_construct_skb().
Signed-off-by: Tirthendu Sarkar <tirthendu.sarkar@intel.com>
Tested-by: Chandan Kumar Rout <chandanx.rout@intel.com> (A Contingent Worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
