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Merge tag 'nf-24-04-18' of git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf
Pablo Neira Ayuso says:
====================
Netfilter fixes for net
The following patchset contains Netfilter fixes for net:
Patch #1 amends a missing spot where the set iterator type is unset.
This is fixing a issue in the previous pull request.
Patch #2 fixes the delete set command abort path by restoring state
of the elements. Reverse logic for the activate (abort) case
otherwise element state is not restored, this requires to move
the check for active/inactive elements to the set iterator
callback. From the deactivate path, toggle the next generation
bit and from the activate (abort) path, clear the next generation
bitmask.
Patch #3 skips elements already restored by delete set command from the
abort path in case there is a previous delete element command in
the batch. Check for the next generation bit just like it is done
via set iteration to restore maps.
netfilter pull request 24-04-18
* tag 'nf-24-04-18' of git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf:
netfilter: nf_tables: fix memleak in map from abort path
netfilter: nf_tables: restore set elements when delete set fails
netfilter: nf_tables: missing iterator type in lookup walk
====================
Link: https://lore.kernel.org/r/20240418010948.3332346-1-pablo@netfilter.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Paul Barker says:
====================
ravb Ethernet driver bugfixes
These patches fix bugs found during recent work on the ravb driver.
Patches 1 & 2 affect the R-Car code paths so have been tested on an
R-Car M3N Salvator-XS board - this is the only R-Car board I currently
have access to.
Patches 2, 3 & 4 affect the GbEth code paths so have been tested on
RZ/G2L and RZ/G2UL SMARC EVK boards.
Changes v2->v3:
* Incorporate feedback from Niklas and add Reviewed-by tag to patch
"net: ravb: Count packets instead of descriptors in R-Car RX path".
Changes v1->v2:
* Fixed typos in commit message of patch
"net: ravb: Allow RX loop to move past DMA mapping errors".
* Added Sergey's Reviewed-by tags.
* Expanded Cc list as Patchwork complained that I had missed people.
* Trimmed the call trace in accordance with the docs [1] in patch
"net: ravb: Fix GbEth jumbo packet RX checksum handling".
[1]: https://docs.kernel.org/process/submitting-patches.html#backtraces-in-commit-messages
====================
Link: https://lore.kernel.org/r/20240416120254.2620-1-paul.barker.ct@bp.renesas.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
The RX byte accounting for jumbo packets was changed to fix a potential
use-after-free bug. However, that fix used the wrong variable and so
only accounted for the number of bytes in the final descriptor, not the
number of bytes in the whole packet.
To fix this, we can simply update our stats with the correct number of
bytes before calling napi_gro_receive().
Also rename pkt_len to desc_len in ravb_rx_gbeth() to avoid any future
confusion. The variable name pkt_len is correct in ravb_rx_rcar() as
that function does not handle packets spanning multiple descriptors.
Fixes: 5a5a3e564d ("ravb: Fix potential use-after-free in ravb_rx_gbeth()")
Signed-off-by: Paul Barker <paul.barker.ct@bp.renesas.com>
Reviewed-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Sending a 7kB ping packet to the RZ/G2L in v6.9-rc2 causes the following
backtrace:
WARNING: CPU: 0 PID: 0 at include/linux/skbuff.h:3127 skb_trim+0x30/0x38
Hardware name: Renesas SMARC EVK based on r9a07g044l2 (DT)
pc : skb_trim+0x30/0x38
lr : ravb_rx_csum_gbeth+0x40/0x90
Call trace:
skb_trim+0x30/0x38
ravb_rx_gbeth+0x56c/0x5cc
ravb_poll+0xa0/0x204
__napi_poll+0x38/0x17c
This is caused by ravb_rx_gbeth() calling ravb_rx_csum_gbeth() with the
wrong skb for a packet which spans multiple descriptors. To fix this,
use the correct skb.
Fixes: c2da940857 ("ravb: Add Rx checksum offload support for GbEth")
Signed-off-by: Paul Barker <paul.barker.ct@bp.renesas.com>
Reviewed-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
The RX loops in ravb_rx_gbeth() and ravb_rx_rcar() skip to the next loop
iteration if a zero-length descriptor is seen (indicating a DMA mapping
error). However, the current RX descriptor index `priv->cur_rx[q]` was
incremented at the end of the loop and so would not be incremented when
we skip to the next loop iteration. This would cause the loop to keep
seeing the same zero-length descriptor instead of moving on to the next
descriptor.
As the loop counter `i` still increments, the loop would eventually
terminate so there is no risk of being stuck here forever - but we
should still fix this to avoid wasting cycles.
To fix this, the RX descriptor index is incremented at the top of the
loop, in the for statement itself. The assignments of `entry` and `desc`
are brought into the loop to avoid the need for duplication.
Fixes: d8b48911fd ("ravb: fix ring memory allocation")
Signed-off-by: Paul Barker <paul.barker.ct@bp.renesas.com>
Reviewed-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
The units of "work done" in the RX path should be packets instead of
descriptors.
Descriptors which are used by the hardware to record error conditions or
are empty in the case of a DMA mapping error should not count towards
our RX work budget.
Also make the limit variable unsigned as it can never be negative.
Fixes: c156633f13 ("Renesas Ethernet AVB driver proper")
Signed-off-by: Paul Barker <paul.barker.ct@bp.renesas.com>
Reviewed-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
The WLAN + WED reset sequence relies on being able to receive interrupts from
the card, in order to synchronize individual steps with the firmware.
When WED is stopped, leave interrupts running and rely on the driver turning
off unwanted ones.
WED DMA also needs to be disabled before resetting.
Fixes: f78cd9c783 ("net: ethernet: mtk_wed: update mtk_wed_stop")
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20240416082330.82564-1-nbd@nbd.name
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Tony Nguyen says:
====================
Intel Wired LAN Driver Updates 2024-04-16 (ice)
This series contains updates to ice driver only.
Michal fixes a couple of issues with TC filter parsing; always add match
for src_vsi and remove flag check that could prevent addition of valid
filters.
Marcin adds additional checks for unsupported flower filters.
* '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue:
ice: Fix checking for unsupported keys on non-tunnel device
ice: tc: allow zero flags in parsing tc flower
ice: tc: check src_vsi in case of traffic from VF
====================
Link: https://lore.kernel.org/r/20240416202409.2008383-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Apparently it's more legal to pass the format as NULL, than
it is to use an empty string. Clang complains about empty
formats:
./../kselftest_harness.h:1207:30: warning: format string is empty
[-Wformat-zero-length]
1207 | diagnostic ? "%s" : "", diagnostic);
| ^~
1 warning generated.
Reported-by: Sean Christopherson <seanjc@google.com>
Link: https://lore.kernel.org/all/20240409224256.1581292-1-seanjc@google.com
Fixes: 378193eff3 ("selftests: kselftest_harness: let PASS / FAIL provide diagnostic")
Tested-by: Sean Christopherson <seanjc@google.com>
Reviewed-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
Link: https://lore.kernel.org/r/20240416151048.1682352-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
When the mirred action is used on a classful egress qdisc and a packet is
mirrored or redirected to self we hit a qdisc lock deadlock.
See trace below.
[..... other info removed for brevity....]
[ 82.890906]
[ 82.890906] ============================================
[ 82.890906] WARNING: possible recursive locking detected
[ 82.890906] 6.8.0-05205-g77fadd89fe2d-dirty #213 Tainted: G W
[ 82.890906] --------------------------------------------
[ 82.890906] ping/418 is trying to acquire lock:
[ 82.890906] ffff888006994110 (&sch->q.lock){+.-.}-{3:3}, at:
__dev_queue_xmit+0x1778/0x3550
[ 82.890906]
[ 82.890906] but task is already holding lock:
[ 82.890906] ffff888006994110 (&sch->q.lock){+.-.}-{3:3}, at:
__dev_queue_xmit+0x1778/0x3550
[ 82.890906]
[ 82.890906] other info that might help us debug this:
[ 82.890906] Possible unsafe locking scenario:
[ 82.890906]
[ 82.890906] CPU0
[ 82.890906] ----
[ 82.890906] lock(&sch->q.lock);
[ 82.890906] lock(&sch->q.lock);
[ 82.890906]
[ 82.890906] *** DEADLOCK ***
[ 82.890906]
[..... other info removed for brevity....]
Example setup (eth0->eth0) to recreate
tc qdisc add dev eth0 root handle 1: htb default 30
tc filter add dev eth0 handle 1: protocol ip prio 2 matchall \
action mirred egress redirect dev eth0
Another example(eth0->eth1->eth0) to recreate
tc qdisc add dev eth0 root handle 1: htb default 30
tc filter add dev eth0 handle 1: protocol ip prio 2 matchall \
action mirred egress redirect dev eth1
tc qdisc add dev eth1 root handle 1: htb default 30
tc filter add dev eth1 handle 1: protocol ip prio 2 matchall \
action mirred egress redirect dev eth0
We fix this by adding an owner field (CPU id) to struct Qdisc set after
root qdisc is entered. When the softirq enters it a second time, if the
qdisc owner is the same CPU, the packet is dropped to break the loop.
Reported-by: Mingshuai Ren <renmingshuai@huawei.com>
Closes: https://lore.kernel.org/netdev/20240314111713.5979-1-renmingshuai@huawei.com/
Fixes: 3bcb846ca4 ("net: get rid of spin_trylock() in net_tx_action()")
Fixes: e578d9c025 ("net: sched: use counter to break reclassify loops")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Victor Nogueira <victor@mojatatu.com>
Reviewed-by: Pedro Tammela <pctammela@mojatatu.com>
Tested-by: Jamal Hadi Salim <jhs@mojatatu.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Link: https://lore.kernel.org/r/20240415210728.36949-1-victor@mojatatu.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
From abort path, nft_mapelem_activate() needs to restore refcounters to
the original state. Currently, it uses the set->ops->walk() to iterate
over these set elements. The existing set iterator skips inactive
elements in the next generation, this does not work from the abort path
to restore the original state since it has to skip active elements
instead (not inactive ones).
This patch moves the check for inactive elements to the set iterator
callback, then it reverses the logic for the .activate case which
needs to skip active elements.
Toggle next generation bit for elements when delete set command is
invoked and call nft_clear() from .activate (abort) path to restore the
next generation bit.
The splat below shows an object in mappings memleak:
[43929.457523] ------------[ cut here ]------------
[43929.457532] WARNING: CPU: 0 PID: 1139 at include/net/netfilter/nf_tables.h:1237 nft_setelem_data_deactivate+0xe4/0xf0 [nf_tables]
[...]
[43929.458014] RIP: 0010:nft_setelem_data_deactivate+0xe4/0xf0 [nf_tables]
[43929.458076] Code: 83 f8 01 77 ab 49 8d 7c 24 08 e8 37 5e d0 de 49 8b 6c 24 08 48 8d 7d 50 e8 e9 5c d0 de 8b 45 50 8d 50 ff 89 55 50 85 c0 75 86 <0f> 0b eb 82 0f 0b eb b3 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90
[43929.458081] RSP: 0018:ffff888140f9f4b0 EFLAGS: 00010246
[43929.458086] RAX: 0000000000000000 RBX: ffff8881434f5288 RCX: dffffc0000000000
[43929.458090] RDX: 00000000ffffffff RSI: ffffffffa26d28a7 RDI: ffff88810ecc9550
[43929.458093] RBP: ffff88810ecc9500 R08: 0000000000000001 R09: ffffed10281f3e8f
[43929.458096] R10: 0000000000000003 R11: ffff0000ffff0000 R12: ffff8881434f52a0
[43929.458100] R13: ffff888140f9f5f4 R14: ffff888151c7a800 R15: 0000000000000002
[43929.458103] FS: 00007f0c687c4740(0000) GS:ffff888390800000(0000) knlGS:0000000000000000
[43929.458107] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[43929.458111] CR2: 00007f58dbe5b008 CR3: 0000000123602005 CR4: 00000000001706f0
[43929.458114] Call Trace:
[43929.458118] <TASK>
[43929.458121] ? __warn+0x9f/0x1a0
[43929.458127] ? nft_setelem_data_deactivate+0xe4/0xf0 [nf_tables]
[43929.458188] ? report_bug+0x1b1/0x1e0
[43929.458196] ? handle_bug+0x3c/0x70
[43929.458200] ? exc_invalid_op+0x17/0x40
[43929.458211] ? nft_setelem_data_deactivate+0xd7/0xf0 [nf_tables]
[43929.458271] ? nft_setelem_data_deactivate+0xe4/0xf0 [nf_tables]
[43929.458332] nft_mapelem_deactivate+0x24/0x30 [nf_tables]
[43929.458392] nft_rhash_walk+0xdd/0x180 [nf_tables]
[43929.458453] ? __pfx_nft_rhash_walk+0x10/0x10 [nf_tables]
[43929.458512] ? rb_insert_color+0x2e/0x280
[43929.458520] nft_map_deactivate+0xdc/0x1e0 [nf_tables]
[43929.458582] ? __pfx_nft_map_deactivate+0x10/0x10 [nf_tables]
[43929.458642] ? __pfx_nft_mapelem_deactivate+0x10/0x10 [nf_tables]
[43929.458701] ? __rcu_read_unlock+0x46/0x70
[43929.458709] nft_delset+0xff/0x110 [nf_tables]
[43929.458769] nft_flush_table+0x16f/0x460 [nf_tables]
[43929.458830] nf_tables_deltable+0x501/0x580 [nf_tables]
Fixes: 628bd3e49c ("netfilter: nf_tables: drop map element references from preparation phase")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Add missing decorator type to lookup expression and tighten WARN_ON_ONCE
check in pipapo to spot earlier that this is unset.
Fixes: 29b359cf6d ("netfilter: nft_set_pipapo: walk over current view on netlink dump")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Since [1], dma_alloc_coherent() does not accept requests for GFP_COMP
anymore, even on archs that may be able to fulfill this. Functionality that
relied on the receive buffer being a compound page broke at that point:
The SMC-D protocol, that utilizes the ism device driver, passes receive
buffers to the splice processor in a struct splice_pipe_desc with a
single entry list of struct pages. As the buffer is no longer a compound
page, the splice processor now rejects requests to handle more than a
page worth of data.
Replace dma_alloc_coherent() and allocate a buffer with folio_alloc and
create a DMA map for it with dma_map_page(). Since only receive buffers
on ISM devices use DMA, qualify the mapping as FROM_DEVICE.
Since ISM devices are available on arch s390, only, and on that arch all
DMA is coherent, there is no need to introduce and export some kind of
dma_sync_to_cpu() method to be called by the SMC-D protocol layer.
Analogously, replace dma_free_coherent by a two step dma_unmap_page,
then folio_put to free the receive buffer.
[1] https://lore.kernel.org/all/20221113163535.884299-1-hch@lst.de/
Fixes: c08004eede ("s390/ism: don't pass bogus GFP_ flags to dma_alloc_coherent")
Signed-off-by: Gerd Bayer <gbayer@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Merge branch 'mr7530-fixes'
Arınç ÜNAL says:
====================
Fix port mirroring on MT7530 DSA subdriver
This patch series fixes the frames received on the local port (monitor
port) not being mirrored, and port mirroring for the MT7988 SoC switch.
====================
Signed-off-by: Arınç ÜNAL <arinc.unal@arinc9.com>
The "MT7988A Wi-Fi 7 Generation Router Platform: Datasheet (Open Version)
v0.1" document shows bits 16 to 18 as the MIRROR_PORT field of the CPU
forward control register. Currently, the MT7530 DSA subdriver configures
bits 0 to 2 of the CPU forward control register which breaks the port
mirroring feature for the MT7988 SoC switch.
Fix this by using the MT7531_MIRROR_PORT_GET() and MT7531_MIRROR_PORT_SET()
macros which utilise the correct bits.
Fixes: 110c18bfed ("net: dsa: mt7530: introduce driver for MT7988 built-in switch")
Signed-off-by: Arınç ÜNAL <arinc.unal@arinc9.com>
Acked-by: Daniel Golle <daniel@makrotopia.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This switch intellectual property provides a bit on the ARL global control
register which controls allowing mirroring frames which are received on the
local port (monitor port). This bit is unset after reset.
This ability must be enabled to fully support the port mirroring feature on
this switch intellectual property.
Therefore, this patch fixes the traffic not being reflected on a port,
which would be configured like below:
tc qdisc add dev swp0 clsact
tc filter add dev swp0 ingress matchall skip_sw \
action mirred egress mirror dev swp0
As a side note, this configuration provides the hairpinning feature for a
single port.
Fixes: 37feab6076 ("net: dsa: mt7530: add support for port mirroring")
Signed-off-by: Arınç ÜNAL <arinc.unal@arinc9.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
vhost_worker will call tun call backs to receive packets. If too many
illegal packets arrives, tun_do_read will keep dumping packet contents.
When console is enabled, it will costs much more cpu time to dump
packet and soft lockup will be detected.
net_ratelimit mechanism can be used to limit the dumping rate.
PID: 33036 TASK: ffff949da6f20000 CPU: 23 COMMAND: "vhost-32980"
#0 [fffffe00003fce50] crash_nmi_callback at ffffffff89249253
#1 [fffffe00003fce58] nmi_handle at ffffffff89225fa3
#2 [fffffe00003fceb0] default_do_nmi at ffffffff8922642e
#3 [fffffe00003fced0] do_nmi at ffffffff8922660d
#4 [fffffe00003fcef0] end_repeat_nmi at ffffffff89c01663
[exception RIP: io_serial_in+20]
RIP: ffffffff89792594 RSP: ffffa655314979e8 RFLAGS: 00000002
RAX: ffffffff89792500 RBX: ffffffff8af428a0 RCX: 0000000000000000
RDX: 00000000000003fd RSI: 0000000000000005 RDI: ffffffff8af428a0
RBP: 0000000000002710 R8: 0000000000000004 R9: 000000000000000f
R10: 0000000000000000 R11: ffffffff8acbf64f R12: 0000000000000020
R13: ffffffff8acbf698 R14: 0000000000000058 R15: 0000000000000000
ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018
#5 [ffffa655314979e8] io_serial_in at ffffffff89792594
#6 [ffffa655314979e8] wait_for_xmitr at ffffffff89793470
#7 [ffffa65531497a08] serial8250_console_putchar at ffffffff897934f6
#8 [ffffa65531497a20] uart_console_write at ffffffff8978b605
#9 [ffffa65531497a48] serial8250_console_write at ffffffff89796558
#10 [ffffa65531497ac8] console_unlock at ffffffff89316124
#11 [ffffa65531497b10] vprintk_emit at ffffffff89317c07
#12 [ffffa65531497b68] printk at ffffffff89318306
#13 [ffffa65531497bc8] print_hex_dump at ffffffff89650765
#14 [ffffa65531497ca8] tun_do_read at ffffffffc0b06c27 [tun]
#15 [ffffa65531497d38] tun_recvmsg at ffffffffc0b06e34 [tun]
#16 [ffffa65531497d68] handle_rx at ffffffffc0c5d682 [vhost_net]
#17 [ffffa65531497ed0] vhost_worker at ffffffffc0c644dc [vhost]
#18 [ffffa65531497f10] kthread at ffffffff892d2e72
#19 [ffffa65531497f50] ret_from_fork at ffffffff89c0022f
Fixes: ef3db4a595 ("tun: avoid BUG, dump packet on GSO errors")
Signed-off-by: Lei Chen <lei.chen@smartx.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Link: https://lore.kernel.org/r/20240415020247.2207781-1-lei.chen@smartx.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Add missing FLOW_DISSECTOR_KEY_ENC_* checks to TC flower filter parsing.
Without these checks, it would be possible to add filters with tunnel
options on non-tunnel devices. enc_* options are only valid for tunnel
devices.
Example:
devlink dev eswitch set $PF1_PCI mode switchdev
echo 1 > /sys/class/net/$PF1/device/sriov_numvfs
tc qdisc add dev $VF1_PR ingress
ethtool -K $PF1 hw-tc-offload on
tc filter add dev $VF1_PR ingress flower enc_ttl 12 skip_sw action drop
Fixes: 9e300987d4 ("ice: VXLAN and Geneve TC support")
Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Signed-off-by: Marcin Szycik <marcin.szycik@linux.intel.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Sujai Buvaneswaran <sujai.buvaneswaran@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
The check for flags is done to not pass empty lookups to adding switch
rule functions. Since metadata is always added to lookups there is no
need to check against the flag.
It is also fixing the problem with such rule:
$ tc filter add dev gtp_dev ingress protocol ip prio 0 flower \
enc_dst_port 2123 action drop
Switch block in case of GTP can't parse the destination port, because it
should always be set to GTP specific value. The same with ethertype. The
result is that there is no other matching criteria than GTP tunnel. In
this case flags is 0, rule can't be added only because of defensive
check against flags.
Fixes: 9a225f81f5 ("ice: Support GTP-U and GTP-C offload in switchdev")
Reviewed-by: Wojciech Drewek <wojciech.drewek@intel.com>
Signed-off-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Tested-by: Sujai Buvaneswaran <sujai.buvaneswaran@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
In case of traffic going from the VF (so ingress for port representor)
source VSI should be consider during packet classification. It is
needed for hardware to not match packets from different ports with
filters added on other port.
It is only for "from VF" traffic, because other traffic direction
doesn't have source VSI.
Set correct ::src_vsi in rule_info to pass it to the hardware filter.
For example this rule should drop only ipv4 packets from eth10, not from
the others VF PRs. It is needed to check source VSI in this case.
$tc filter add dev eth10 ingress protocol ip flower skip_sw action drop
Fixes: 0d08a441fb ("ice: ndo_setup_tc implementation for PF")
Reviewed-by: Jedrzej Jagielski <jedrzej.jagielski@intel.com>
Reviewed-by: Sridhar Samudrala <sridhar.samudrala@intel.com>
Signed-off-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Tested-by: Sujai Buvaneswaran <sujai.buvaneswaran@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Serge Semin says:
====================
net: stmmac: Fix MAC-capabilities procedure
The series got born as a result of the discussions around the recent
Yanteng' series adding the Loongson LS7A1000, LS2K1000, LS7A2000, LS2K2000
MACs support:
Link: https://lore.kernel.org/netdev/fu3f6uoakylnb6eijllakeu5i4okcyqq7sfafhp5efaocbsrwe@w74xe7gb6x7p
In particular the Yanteng' patchset needed to implement the Loongson
MAC-specific constraints applied to the link speed and link duplex mode.
As a result of the discussion with Russel the next preliminary patch was
born:
Link: https://lore.kernel.org/netdev/df31e8bcf74b3b4ddb7ddf5a1c371390f16a2ad5.1712917541.git.siyanteng@loongson.cn
The patch above was a temporal solution utilized by Yanteng for further
developments and to move on with the on-going review. This patchset is a
refactored version of that single patch with formatting required for the
fixes patches.
In particular the series starts with fixing the half-duplex-less
constraint currently applied for all IP-cores. In fact it's specific for
the DW QoS Eth only (DW GMAC v4.x/v5.x).
The next patch fixes the MAC-capabilities setting up during the active
Tx/Rx queues re-initialization procedure. Particularly the procedure
missed the max-speed limit thus possibly activating speeds prohibited on
the respective platforms.
Third patch fixes the incorrect MAC-capabilities initialization for DW
MAC100, DW XGMAC and DW XLGMAC devices by moving the correct
initialization to the IP-core specific setup() methods.
That's it for now. Thanks for review and testing in advance.
Signed-off-by: Serge Semin <fancer.lancer@gmail.com>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: Simon Horman <horms@kernel.org>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Chen-Yu Tsai <wens@csie.org>
Cc: Jernej Skrabec <jernej.skrabec@gmail.com>
Cc: Samuel Holland <samuel@sholland.org>
Cc: netdev@vger.kernel.org
Cc: linux-stm32@st-md-mailman.stormreply.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-sunxi@lists.linux.dev
Cc: linux-kernel@vger.kernel.org
====================
Link: https://lore.kernel.org/r/20240412180340.7965-1-fancer.lancer@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Here is the list of the MAC capabilities specific to the particular DW MAC
IP-cores currently supported by the driver:
DW MAC100: MAC_ASYM_PAUSE | MAC_SYM_PAUSE |
MAC_10 | MAC_100
DW GMAC: MAC_ASYM_PAUSE | MAC_SYM_PAUSE |
MAC_10 | MAC_100 | MAC_1000
Allwinner sun8i MAC: MAC_ASYM_PAUSE | MAC_SYM_PAUSE |
MAC_10 | MAC_100 | MAC_1000
DW QoS Eth: MAC_ASYM_PAUSE | MAC_SYM_PAUSE |
MAC_10 | MAC_100 | MAC_1000 | MAC_2500FD
if there is more than 1 active Tx/Rx queues:
MAC_ASYM_PAUSE | MAC_SYM_PAUSE |
MAC_10FD | MAC_100FD | MAC_1000FD | MAC_2500FD
DW XGMAC: MAC_ASYM_PAUSE | MAC_SYM_PAUSE |
MAC_1000FD | MAC_2500FD | MAC_5000FD | MAC_10000FD
DW XLGMAC: MAC_ASYM_PAUSE | MAC_SYM_PAUSE |
MAC_1000FD | MAC_2500FD | MAC_5000FD | MAC_10000FD |
MAC_25000FD | MAC_40000FD | MAC_50000FD | MAC_100000FD
As you can see there are only two common capabilities:
MAC_ASYM_PAUSE | MAC_SYM_PAUSE.
Meanwhile what is currently implemented defines 10/100/1000 link speeds
for all IP-cores, which is definitely incorrect for DW MAC100, DW XGMAC
and DW XLGMAC devices.
Seeing the flow-control is implemented as a callback for each MAC IP-core
(see dwmac100_flow_ctrl(), dwmac1000_flow_ctrl(), sun8i_dwmac_flow_ctrl(),
etc) and since the MAC-specific setup() method is supposed to be called
for each available DW MAC-based device, the capabilities initialization
can be freely moved to these setup() functions, thus correctly setting up
the MAC-capabilities for each IP-core (including the Allwinner Sun8i). A
new stmmac_link::caps field was specifically introduced for that so to
have all link-specific info preserved in a single structure.
Note the suggested change fixes three earlier commits at a time. The
commit 5b0d7d7da6 ("net: stmmac: Add the missing speeds that XGMAC
supports") permitted the 10-100 link speeds and 1G half-duplex mode for DW
XGMAC IP-core even though it doesn't support them. The commit df7699c70c
("net: stmmac: Do not cut down 1G modes") incorrectly added the MAC1000
capability to the DW MAC100 IP-core. Similarly to the DW XGMAC the commit
8a880936e9 ("net: stmmac: Add XLGMII support") incorrectly permitted the
10-100 link speeds and 1G half-duplex mode for DW XLGMAC IP-core.
Fixes: 5b0d7d7da6 ("net: stmmac: Add the missing speeds that XGMAC supports")
Fixes: df7699c70c ("net: stmmac: Do not cut down 1G modes")
Fixes: 8a880936e9 ("net: stmmac: Add XLGMII support")
Suggested-by: Russell King (Oracle) <linux@armlinux.org.uk>
Signed-off-by: Serge Semin <fancer.lancer@gmail.com>
Reviewed-by: Romain Gantois <romain.gantois@bootlin.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
It's possible to have the maximum link speed being artificially limited on
the platform-specific basis. It's done either by setting up the
plat_stmmacenet_data::max_speed field or by specifying the "max-speed"
DT-property. In such cases it's required that any specific
MAC-capabilities re-initializations would take the limit into account. In
particular the link speed capabilities may change during the number of
active Tx/Rx queues re-initialization. But the currently implemented
procedure doesn't take the speed limit into account.
Fix that by calling phylink_limit_mac_speed() in the
stmmac_reinit_queues() method if the speed limitation was required in the
same way as it's done in the stmmac_phy_setup() function.
Fixes: 95201f36f3 ("net: stmmac: update MAC capabilities when tx queues are updated")
Signed-off-by: Serge Semin <fancer.lancer@gmail.com>
Reviewed-by: Romain Gantois <romain.gantois@bootlin.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
There are three DW MAC IP-cores which can have the multiple Tx/Rx queues
enabled:
DW GMAC v3.7+ with AV feature,
DW QoS Eth v4.x/v5.x,
DW XGMAC/XLGMAC
Based on the respective HW databooks, only the DW QoS Eth IP-core doesn't
support the half-duplex link mode in case if more than one queues enabled:
"In multiple queue/channel configurations, for half-duplex operation,
enable only the Q0/CH0 on Tx and Rx. For single queue/channel in
full-duplex operation, any queue/channel can be enabled."
The rest of the IP-cores don't have such constraint. Thus in order to have
the constraint applied for the DW QoS Eth MACs only, let's move the it'
implementation to the respective MAC-capabilities getter and make sure the
getter is called in the queues re-init procedure.
Fixes: b6cfffa7ad ("stmmac: fix DMA channel hang in half-duplex mode")
Signed-off-by: Serge Semin <fancer.lancer@gmail.com>
Reviewed-by: Romain Gantois <romain.gantois@bootlin.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Dmitry Safonov via says:
====================
selftests/net/tcp_ao: A bunch of fixes for TCP-AO selftests
Started as addressing the flakiness issues in rst_ipv*, that affect
netdev dashboard.
Signed-off-by: Dmitry Safonov <0x7f454c46@gmail.com>
====================
Link: https://lore.kernel.org/r/20240413-tcp-ao-selftests-fixes-v1-0-f9c41c96949d@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
On my new laptop with packages from nixos-unstable, gcc 12.3.0 produces
> lib/setup.c: In function ‘__test_msg’:
> lib/setup.c:20:9: error: format not a string literal and no format arguments [-Werror=format-security]
> 20 | ksft_print_msg(buf);
> | ^~~~~~~~~~~~~~
> lib/setup.c: In function ‘__test_ok’:
> lib/setup.c:26:9: error: format not a string literal and no format arguments [-Werror=format-security]
> 26 | ksft_test_result_pass(buf);
> | ^~~~~~~~~~~~~~~~~~~~~
> lib/setup.c: In function ‘__test_fail’:
> lib/setup.c:32:9: error: format not a string literal and no format arguments [-Werror=format-security]
> 32 | ksft_test_result_fail(buf);
> | ^~~~~~~~~~~~~~~~~~~~~
> lib/setup.c: In function ‘__test_xfail’:
> lib/setup.c:38:9: error: format not a string literal and no format arguments [-Werror=format-security]
> 38 | ksft_test_result_xfail(buf);
> | ^~~~~~~~~~~~~~~~~~~~~~
> lib/setup.c: In function ‘__test_error’:
> lib/setup.c:44:9: error: format not a string literal and no format arguments [-Werror=format-security]
> 44 | ksft_test_result_error(buf);
> | ^~~~~~~~~~~~~~~~~~~~~~
> lib/setup.c: In function ‘__test_skip’:
> lib/setup.c:50:9: error: format not a string literal and no format arguments [-Werror=format-security]
> 50 | ksft_test_result_skip(buf);
> | ^~~~~~~~~~~~~~~~~~~~~
> cc1: some warnings being treated as errors
As the buffer was already pre-printed into, print it as a string
rather than a format-string.
Fixes: cfbab37b3d ("selftests/net: Add TCP-AO library")
Signed-off-by: Dmitry Safonov <0x7f454c46@gmail.com>
Reported-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
On my new laptop with packages from nixos-unstable, gcc 12.3.0 produces:
> lib/proc.c: In function ‘netstat_read_type’:
> lib/proc.c:89:9: error: format not a string literal and no format arguments [-Werror=format-security]
> 89 | if (fscanf(fnetstat, type->header_name) == EOF)
> | ^~
> cc1: some warnings being treated as errors
Here the selftests lib parses header name, while expectes non-space word
ending with a column.
Fixes: cfbab37b3d ("selftests/net: Add TCP-AO library")
Signed-off-by: Dmitry Safonov <0x7f454c46@gmail.com>
Reported-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
The structure is on the stack and has to be zero-initialized as
the kernel checks for:
> if (in.reserved != 0 || in.reserved2 != 0)
> return -EINVAL;
Fixes: b26660531c ("selftests/net: Add test for TCP-AO add setsockopt() command")
Signed-off-by: Dmitry Safonov <0x7f454c46@gmail.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Currently, "active reset" cases are flaky, because select() is called
for 3 sockets, while only 2 are expected to receive RST.
The idea of the third socket was to get into request_sock_queue,
but the test mistakenly attempted to connect() after the listener
socket was shut down.
Repair this test, it's important to check the different kernel
code-paths for signing RST TCP-AO segments.
Fixes: c6df7b2361 ("selftests/net: Add TCP-AO RST test")
Reported-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Dmitry Safonov <0x7f454c46@gmail.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Upon reviewing the flower control flags handling in
this driver, I notice that the key wasn't being used,
only the mask.
Ie. `tc flower ... ip_flags nofrag` was hardware
offloaded as `... ip_flags frag`.
Only compile tested, no access to HW.
Fixes: c672e37279 ("octeontx2-pf: Add support to filter packet based on IP fragment")
Signed-off-by: Asbjørn Sloth Tønnesen <ast@fiberby.net>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The commit fc8b2a6194
("net: more strict VIRTIO_NET_HDR_GSO_UDP_L4 validation")
adds check of potential number of UDP segments vs
UDP_MAX_SEGMENTS in linux/virtio_net.h.
After this change certification test of USO guest-to-guest
transmit on Windows driver for virtio-net device fails,
for example with packet size of ~64K and mss of 536 bytes.
In general the USO should not be more restrictive than TSO.
Indeed, in case of unreasonably small mss a lot of segments
can cause queue overflow and packet loss on the destination.
Limit of 128 segments is good for any practical purpose,
with minimal meaningful mss of 536 the maximal UDP packet will
be divided to ~120 segments.
The number of segments for UDP packets is validated vs
UDP_MAX_SEGMENTS also in udp.c (v4,v6), this does not affect
quest-to-guest path but does affect packets sent to host, for
example.
It is important to mention that UDP_MAX_SEGMENTS is kernel-only
define and not available to user mode socket applications.
In order to request MSS smaller than MTU the applications
just uses setsockopt with SOL_UDP and UDP_SEGMENT and there is
no limitations on socket API level.
Fixes: fc8b2a6194 ("net: more strict VIRTIO_NET_HDR_GSO_UDP_L4 validation")
Signed-off-by: Yuri Benditovich <yuri.benditovich@daynix.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When disabling aRFS under the `priv->state_lock`, any scheduled
aRFS works are canceled using the `cancel_work_sync` function,
which waits for the work to end if it has already started.
However, while waiting for the work handler, the handler will
try to acquire the `state_lock` which is already acquired.
The worker acquires the lock to delete the rules if the state
is down, which is not the worker's responsibility since
disabling aRFS deletes the rules.
Add an aRFS state variable, which indicates whether the aRFS is
enabled and prevent adding rules when the aRFS is disabled.
Kernel log:
======================================================
WARNING: possible circular locking dependency detected
6.7.0-rc4_net_next_mlx5_5483eb2 #1 Tainted: G I
------------------------------------------------------
ethtool/386089 is trying to acquire lock:
ffff88810f21ce68 ((work_completion)(&rule->arfs_work)){+.+.}-{0:0}, at: __flush_work+0x74/0x4e0
but task is already holding lock:
ffff8884a1808cc0 (&priv->state_lock){+.+.}-{3:3}, at: mlx5e_ethtool_set_channels+0x53/0x200 [mlx5_core]
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #1 (&priv->state_lock){+.+.}-{3:3}:
__mutex_lock+0x80/0xc90
arfs_handle_work+0x4b/0x3b0 [mlx5_core]
process_one_work+0x1dc/0x4a0
worker_thread+0x1bf/0x3c0
kthread+0xd7/0x100
ret_from_fork+0x2d/0x50
ret_from_fork_asm+0x11/0x20
-> #0 ((work_completion)(&rule->arfs_work)){+.+.}-{0:0}:
__lock_acquire+0x17b4/0x2c80
lock_acquire+0xd0/0x2b0
__flush_work+0x7a/0x4e0
__cancel_work_timer+0x131/0x1c0
arfs_del_rules+0x143/0x1e0 [mlx5_core]
mlx5e_arfs_disable+0x1b/0x30 [mlx5_core]
mlx5e_ethtool_set_channels+0xcb/0x200 [mlx5_core]
ethnl_set_channels+0x28f/0x3b0
ethnl_default_set_doit+0xec/0x240
genl_family_rcv_msg_doit+0xd0/0x120
genl_rcv_msg+0x188/0x2c0
netlink_rcv_skb+0x54/0x100
genl_rcv+0x24/0x40
netlink_unicast+0x1a1/0x270
netlink_sendmsg+0x214/0x460
__sock_sendmsg+0x38/0x60
__sys_sendto+0x113/0x170
__x64_sys_sendto+0x20/0x30
do_syscall_64+0x40/0xe0
entry_SYSCALL_64_after_hwframe+0x46/0x4e
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&priv->state_lock);
lock((work_completion)(&rule->arfs_work));
lock(&priv->state_lock);
lock((work_completion)(&rule->arfs_work));
*** DEADLOCK ***
3 locks held by ethtool/386089:
#0: ffffffff82ea7210 (cb_lock){++++}-{3:3}, at: genl_rcv+0x15/0x40
#1: ffffffff82e94c88 (rtnl_mutex){+.+.}-{3:3}, at: ethnl_default_set_doit+0xd3/0x240
#2: ffff8884a1808cc0 (&priv->state_lock){+.+.}-{3:3}, at: mlx5e_ethtool_set_channels+0x53/0x200 [mlx5_core]
stack backtrace:
CPU: 15 PID: 386089 Comm: ethtool Tainted: G I 6.7.0-rc4_net_next_mlx5_5483eb2 #1
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014
Call Trace:
<TASK>
dump_stack_lvl+0x60/0xa0
check_noncircular+0x144/0x160
__lock_acquire+0x17b4/0x2c80
lock_acquire+0xd0/0x2b0
? __flush_work+0x74/0x4e0
? save_trace+0x3e/0x360
? __flush_work+0x74/0x4e0
__flush_work+0x7a/0x4e0
? __flush_work+0x74/0x4e0
? __lock_acquire+0xa78/0x2c80
? lock_acquire+0xd0/0x2b0
? mark_held_locks+0x49/0x70
__cancel_work_timer+0x131/0x1c0
? mark_held_locks+0x49/0x70
arfs_del_rules+0x143/0x1e0 [mlx5_core]
mlx5e_arfs_disable+0x1b/0x30 [mlx5_core]
mlx5e_ethtool_set_channels+0xcb/0x200 [mlx5_core]
ethnl_set_channels+0x28f/0x3b0
ethnl_default_set_doit+0xec/0x240
genl_family_rcv_msg_doit+0xd0/0x120
genl_rcv_msg+0x188/0x2c0
? ethnl_ops_begin+0xb0/0xb0
? genl_family_rcv_msg_dumpit+0xf0/0xf0
netlink_rcv_skb+0x54/0x100
genl_rcv+0x24/0x40
netlink_unicast+0x1a1/0x270
netlink_sendmsg+0x214/0x460
__sock_sendmsg+0x38/0x60
__sys_sendto+0x113/0x170
? do_user_addr_fault+0x53f/0x8f0
__x64_sys_sendto+0x20/0x30
do_syscall_64+0x40/0xe0
entry_SYSCALL_64_after_hwframe+0x46/0x4e
</TASK>
Fixes: 45bf454ae8 ("net/mlx5e: Enabling aRFS mechanism")
Signed-off-by: Carolina Jubran <cjubran@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://lore.kernel.org/r/20240411115444.374475-7-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
netif_queue_set_napi asserts whether RTNL lock is held if
the netdev is initialized.
Acquire the RTNL lock before activating or deactivating
RQs/SQs if the lock has not been held before in the flow.
Fixes: f25e7b8263 ("net/mlx5e: link NAPI instances to queues and IRQs")
Cc: Joe Damato <jdamato@fastly.com>
Signed-off-by: Carolina Jubran <cjubran@nvidia.com>
Reviewed-by: Rahul Rameshbabu <rrameshbabu@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://lore.kernel.org/r/20240411115444.374475-6-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Channels can potentially have independent mdev instances. Do not refer to
the global mdev instance in the mlx5e_priv instance for channel FW
operations related to coalescing. CQ numbers that would be valid on the
channel's mdev instance may not be correctly referenced if using the
mlx5e_priv instance.
Fixes: 67936e1385 ("net/mlx5e: Let channels be SD-aware")
Signed-off-by: Rahul Rameshbabu <rrameshbabu@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://lore.kernel.org/r/20240411115444.374475-5-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Code parts from cited commit were mistakenly dropped while rebasing
before submission. Add them here.
Fixes: c6e77aa9dd ("net/mlx5: Register devlink first under devlink lock")
Signed-off-by: Shay Drory <shayd@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://lore.kernel.org/r/20240411115444.374475-4-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Check if devcom holds an error pointer and return immediately.
This fixes Smatch static checker warning:
drivers/net/ethernet/mellanox/mlx5/core/lib/sd.c:221 sd_register()
error: 'devcom' dereferencing possible ERR_PTR()
Enhance mlx5_devcom_register_component() so it stops returning NULL,
making it easier for its callers.
Fixes: d3d0576660 ("net/mlx5: SD, Implement devcom communication and primary election")
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Link: https://lore.kernel.org/all/f09666c8-e604-41f6-958b-4cc55c73faf9@gmail.com/T/
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Gal Pressman <gal@nvidia.com>
Link: https://lore.kernel.org/r/20240411115444.374475-3-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The cited patch introduces the concept of buckets in LAG in hash mode.
However, the patch doesn't clear the number of buckets in the LAG
deactivation. This results in using the wrong number of buckets in
case user create a hash mode LAG and afterwards create a non-hash
mode LAG.
Hence, restore buckets number to default after hash mode LAG
deactivation.
Fixes: 352899f384 ("net/mlx5: Lag, use buckets in hash mode")
Signed-off-by: Shay Drory <shayd@nvidia.com>
Reviewed-by: Maor Gottlieb <maorg@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://lore.kernel.org/r/20240411115444.374475-2-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
I noticed that only 3 out of the 4 input bits were used,
mt.key->flags & FLOW_DIS_IS_FRAGMENT was never checked.
In order to avoid a complicated maze, I converted it to
use a 16 byte mapping table.
As shown in the table below the old heuristics doesn't
always do the right thing, ie. when FLOW_DIS_IS_FRAGMENT=1/1
then it used to only match follow-up fragment packets.
Here are all the combinations, and their resulting new/old
VCAP key/mask filter:
/- FLOW_DIS_IS_FRAGMENT (key/mask)
| /- FLOW_DIS_FIRST_FRAG (key/mask)
| | /-- new VCAP fragment (key/mask)
v v v v- old VCAP fragment (key/mask)
0/0 0/0 -/- -/- impossible (due to entry cond. on mask)
0/0 0/1 -/- 0/3 !! invalid (can't match non-fragment + follow-up frag)
0/0 1/0 -/- -/- impossible (key > mask)
0/0 1/1 1/3 1/3 first fragment
0/1 0/0 0/3 3/3 !! not fragmented
0/1 0/1 0/3 3/3 !! not fragmented (+ not first fragment)
0/1 1/0 -/- -/- impossible (key > mask)
0/1 1/1 -/- 1/3 !! invalid (non-fragment and first frag)
1/0 0/0 -/- -/- impossible (key > mask)
1/0 0/1 -/- -/- impossible (key > mask)
1/0 1/0 -/- -/- impossible (key > mask)
1/0 1/1 -/- -/- impossible (key > mask)
1/1 0/0 1/1 3/3 !! some fragment
1/1 0/1 3/3 3/3 follow-up fragment
1/1 1/0 -/- -/- impossible (key > mask)
1/1 1/1 1/3 1/3 first fragment
In the datasheet the VCAP fragment values are documented as:
0 = no fragment
1 = initial fragment
2 = suspicious fragment
3 = valid follow-up fragment
Result: 3 combinations match the old behavior,
3 combinations have been corrected,
2 combinations are now invalid, and fail,
8 combinations are impossible.
It should now be aligned with how FLOW_DIS_IS_FRAGMENT
and FLOW_DIS_FIRST_FRAG is set in __skb_flow_dissect() in
net/core/flow_dissector.c
Since the VCAP fragment values are not a bitfield, we have
to ignore the suspicious fragment value, eg. when matching
on any kind of fragment with FLOW_DIS_IS_FRAGMENT=1/1.
Only compile tested, and logic tested in userspace, as I
unfortunately don't have access to this switch chip (yet).
Fixes: d6c2964db3 ("net: microchip: sparx5: Adding more tc flower keys for the IS2 VCAP")
Signed-off-by: Asbjørn Sloth Tønnesen <ast@fiberby.net>
Reviewed-by: Steen Hegelund <Steen.Hegelund@microchip.com>
Tested-by: Daniel Machon <daniel.machon@microchip.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://lore.kernel.org/r/20240411111321.114095-1-ast@fiberby.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Currently, we can read OOB data without MSG_OOB by using MSG_PEEK
when OOB data is sitting on the front row, which is apparently
wrong.
>>> from socket import *
>>> c1, c2 = socketpair(AF_UNIX, SOCK_STREAM)
>>> c1.send(b'a', MSG_OOB)
1
>>> c2.recv(1, MSG_PEEK | MSG_DONTWAIT)
b'a'
If manage_oob() is called when no data has been copied, we only
check if the socket enables SO_OOBINLINE or MSG_PEEK is not used.
Otherwise, the skb is returned as is.
However, here we should return NULL if MSG_PEEK is set and no data
has been copied.
Also, in such a case, we should not jump to the redo label because
we will be caught in the loop and hog the CPU until normal data
comes in.
Then, we need to handle skb == NULL case with the if-clause below
the manage_oob() block.
With this patch:
>>> from socket import *
>>> c1, c2 = socketpair(AF_UNIX, SOCK_STREAM)
>>> c1.send(b'a', MSG_OOB)
1
>>> c2.recv(1, MSG_PEEK | MSG_DONTWAIT)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
BlockingIOError: [Errno 11] Resource temporarily unavailable
Fixes: 314001f0bf ("af_unix: Add OOB support")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Link: https://lore.kernel.org/r/20240410171016.7621-3-kuniyu@amazon.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
When we call recv() for AF_UNIX socket, we first peek one skb and
calls manage_oob() to check if the skb is sent with MSG_OOB.
However, when we fetch the next (and the following) skb, manage_oob()
is not called now, leading a wrong behaviour.
Let's say a socket send()s "hello" with MSG_OOB and the peer tries
to recv() 5 bytes with MSG_PEEK. Here, we should get only "hell"
without 'o', but actually not:
>>> from socket import *
>>> c1, c2 = socketpair(AF_UNIX, SOCK_STREAM)
>>> c1.send(b'hello', MSG_OOB)
5
>>> c2.recv(5, MSG_PEEK)
b'hello'
The first skb fills 4 bytes, and the next skb is peeked but not
properly checked by manage_oob().
Let's move up the again label to call manage_oob() for evry skb.
With this patch:
>>> from socket import *
>>> c1, c2 = socketpair(AF_UNIX, SOCK_STREAM)
>>> c1.send(b'hello', MSG_OOB)
5
>>> c2.recv(5, MSG_PEEK)
b'hell'
Fixes: 314001f0bf ("af_unix: Add OOB support")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Link: https://lore.kernel.org/r/20240410171016.7621-2-kuniyu@amazon.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'nf-24-04-11' of git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf
netfilter pull request 24-04-11
Pablo Neira Ayuso says:
====================
Netfilter fixes for net
The following patchset contains Netfilter fixes for net:
Patches #1 and #2 add missing rcu read side lock when iterating over
expression and object type list which could race with module removal.
Patch #3 prevents promisc packet from visiting the bridge/input hook
to amend a recent fix to address conntrack confirmation race
in br_netfilter and nf_conntrack_bridge.
Patch #4 adds and uses iterate decorator type to fetch the current
pipapo set backend datastructure view when netlink dumps the
set elements.
Patch #5 fixes removal of duplicate elements in the pipapo set backend.
Patch #6 flowtable validates pppoe header before accessing it.
Patch #7 fixes flowtable datapath for pppoe packets, otherwise lookup
fails and pppoe packets follow classic path.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Current release - new code bugs:
- netfilter: complete validation of user input
- mlx5: disallow SRIOV switchdev mode when in multi-PF netdev
Previous releases - regressions:
- core: fix u64_stats_init() for lockdep when used repeatedly in one file
- ipv6: fix race condition between ipv6_get_ifaddr and ipv6_del_addr
- bluetooth: fix memory leak in hci_req_sync_complete()
- batman-adv: avoid infinite loop trying to resize local TT
- drv: geneve: fix header validation in geneve[6]_xmit_skb
- drv: bnxt_en: fix possible memory leak in bnxt_rdma_aux_device_init()
- drv: mlx5: offset comp irq index in name by one
- drv: ena: avoid double-free clearing stale tx_info->xdpf value
- drv: pds_core: fix pdsc_check_pci_health deadlock
Previous releases - always broken:
- xsk: validate user input for XDP_{UMEM|COMPLETION}_FILL_RING
- bluetooth: fix setsockopt not validating user input
- af_unix: clear stale u->oob_skb.
- nfc: llcp: fix nfc_llcp_setsockopt() unsafe copies
- drv: virtio_net: fix guest hangup on invalid RSS update
- drv: mlx5e: Fix mlx5e_priv_init() cleanup flow
- dsa: mt7530: trap link-local frames regardless of ST Port State
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-6.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Paolo Abeni:
"Including fixes from bluetooth.
Current release - new code bugs:
- netfilter: complete validation of user input
- mlx5: disallow SRIOV switchdev mode when in multi-PF netdev
Previous releases - regressions:
- core: fix u64_stats_init() for lockdep when used repeatedly in one
file
- ipv6: fix race condition between ipv6_get_ifaddr and ipv6_del_addr
- bluetooth: fix memory leak in hci_req_sync_complete()
- batman-adv: avoid infinite loop trying to resize local TT
- drv: geneve: fix header validation in geneve[6]_xmit_skb
- drv: bnxt_en: fix possible memory leak in
bnxt_rdma_aux_device_init()
- drv: mlx5: offset comp irq index in name by one
- drv: ena: avoid double-free clearing stale tx_info->xdpf value
- drv: pds_core: fix pdsc_check_pci_health deadlock
Previous releases - always broken:
- xsk: validate user input for XDP_{UMEM|COMPLETION}_FILL_RING
- bluetooth: fix setsockopt not validating user input
- af_unix: clear stale u->oob_skb.
- nfc: llcp: fix nfc_llcp_setsockopt() unsafe copies
- drv: virtio_net: fix guest hangup on invalid RSS update
- drv: mlx5e: Fix mlx5e_priv_init() cleanup flow
- dsa: mt7530: trap link-local frames regardless of ST Port State"
* tag 'net-6.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (59 commits)
net: ena: Set tx_info->xdpf value to NULL
net: ena: Fix incorrect descriptor free behavior
net: ena: Wrong missing IO completions check order
net: ena: Fix potential sign extension issue
af_unix: Fix garbage collector racing against connect()
net: dsa: mt7530: trap link-local frames regardless of ST Port State
Revert "s390/ism: fix receive message buffer allocation"
net: sparx5: fix wrong config being used when reconfiguring PCS
net/mlx5: fix possible stack overflows
net/mlx5: Disallow SRIOV switchdev mode when in multi-PF netdev
net/mlx5e: RSS, Block XOR hash with over 128 channels
net/mlx5e: Do not produce metadata freelist entries in Tx port ts WQE xmit
net/mlx5e: HTB, Fix inconsistencies with QoS SQs number
net/mlx5e: Fix mlx5e_priv_init() cleanup flow
net/mlx5e: RSS, Block changing channels number when RXFH is configured
net/mlx5: Correctly compare pkt reformat ids
net/mlx5: Properly link new fs rules into the tree
net/mlx5: offset comp irq index in name by one
net/mlx5: Register devlink first under devlink lock
net/mlx5: E-switch, store eswitch pointer before registering devlink_param
...
The most important fix is the sg one because the regression it fixes
(spurious warning and use after final put) is already backported to
stable. The next biggest impact is the target fix for wrong
credentials used to load a module because it's affecting new kernels
installed on selinux based distributions. The other three fixes are
an obvious off by one and SATA protocol issues.
Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"The most important fix is the sg one because the regression it fixes
(spurious warning and use after final put) is already backported to
stable.
The next biggest impact is the target fix for wrong credentials used
to load a module because it's affecting new kernels installed on
selinux based distributions.
The other three fixes are an obvious off by one and SATA protocol
issues"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: qla2xxx: Fix off by one in qla_edif_app_getstats()
scsi: hisi_sas: Modify the deadline for ata_wait_after_reset()
scsi: hisi_sas: Handle the NCQ error returned by D2H frame
scsi: target: Fix SELinux error when systemd-modules loads the target module
scsi: sg: Avoid race in error handling & drop bogus warn
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Merge tag 'loongarch-fixes-6.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
Pull LoongArch fixes from Huacai Chen:
- make {virt, phys, page, pfn} translation work with KFENCE for
LoongArch (otherwise NVMe and virtio-blk cannot work with KFENCE
enabled)
- update dts files for Loongson-2K series to make devices work
correctly
- fix a build error
* tag 'loongarch-fixes-6.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson:
LoongArch: Include linux/sizes.h in addrspace.h to prevent build errors
LoongArch: Update dts for Loongson-2K2000 to support GMAC/GNET
LoongArch: Update dts for Loongson-2K2000 to support PCI-MSI
LoongArch: Update dts for Loongson-2K2000 to support ISA/LPC
LoongArch: Update dts for Loongson-2K1000 to support ISA/LPC
LoongArch: Make virt_addr_valid()/__virt_addr_valid() work with KFENCE
LoongArch: Make {virt, phys, page, pfn} translation work with KFENCE
mm: Move lowmem_page_address() a little later
Notable user impacting bugs
- On multi device filesystems, recovery was looping in
btree_trans_too_many_iters(). This checks if a transaction has touched
too many btree paths (because of iteration over many keys), and isuses
a restart to drop unneeded paths. But it's now possible for some paths
to exceed the previous limit without iteration in the interior btree
update path, since the transaction commit will do alloc updates for
every old and new btree node, and during journal replay we don't use
the btree write buffer for locking reasons and thus those updates use
btree paths when they wouldn't normally.
- Fix a corner case in rebalance when moving extents on a durability=0
device. This wouldn't be hit when a device was formatted with
durability=0 since in that case we'll only use it as a write through
cache (only cached extents will live on it), but durability can now be
changed on an existing device.
- bch2_get_acl() could rarely forget to handle a transaction restart;
this manifested as the occasional missing acl that came back after
dropping caches.
- Fix a major performance regression on high iops multithreaded write
workloads (only since 6.9-rc1); a previous fix for a deadlock in the
interior btree update path to check the journal watermark introduced a
dependency on the state of btree write buffer flushing that we didn't
want.
- Assorted other repair paths and recovery fixes.
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Merge tag 'bcachefs-2024-04-10' of https://evilpiepirate.org/git/bcachefs
Pull more bcachefs fixes from Kent Overstreet:
"Notable user impacting bugs
- On multi device filesystems, recovery was looping in
btree_trans_too_many_iters(). This checks if a transaction has
touched too many btree paths (because of iteration over many keys),
and isuses a restart to drop unneeded paths.
But it's now possible for some paths to exceed the previous limit
without iteration in the interior btree update path, since the
transaction commit will do alloc updates for every old and new
btree node, and during journal replay we don't use the btree write
buffer for locking reasons and thus those updates use btree paths
when they wouldn't normally.
- Fix a corner case in rebalance when moving extents on a
durability=0 device. This wouldn't be hit when a device was
formatted with durability=0 since in that case we'll only use it as
a write through cache (only cached extents will live on it), but
durability can now be changed on an existing device.
- bch2_get_acl() could rarely forget to handle a transaction restart;
this manifested as the occasional missing acl that came back after
dropping caches.
- Fix a major performance regression on high iops multithreaded write
workloads (only since 6.9-rc1); a previous fix for a deadlock in
the interior btree update path to check the journal watermark
introduced a dependency on the state of btree write buffer flushing
that we didn't want.
- Assorted other repair paths and recovery fixes"
* tag 'bcachefs-2024-04-10' of https://evilpiepirate.org/git/bcachefs: (25 commits)
bcachefs: Fix __bch2_btree_and_journal_iter_init_node_iter()
bcachefs: Kill read lock dropping in bch2_btree_node_lock_write_nofail()
bcachefs: Fix a race in btree_update_nodes_written()
bcachefs: btree_node_scan: Respect member.data_allowed
bcachefs: Don't scan for btree nodes when we can reconstruct
bcachefs: Fix check_topology() when using node scan
bcachefs: fix eytzinger0_find_gt()
bcachefs: fix bch2_get_acl() transaction restart handling
bcachefs: fix the count of nr_freed_pcpu after changing bc->freed_nonpcpu list
bcachefs: Fix gap buffer bug in bch2_journal_key_insert_take()
bcachefs: Rename struct field swap to prevent macro naming collision
MAINTAINERS: Add entry for bcachefs documentation
Documentation: filesystems: Add bcachefs toctree
bcachefs: JOURNAL_SPACE_LOW
bcachefs: Disable errors=panic for BCH_IOCTL_FSCK_OFFLINE
bcachefs: Fix BCH_IOCTL_FSCK_OFFLINE for encrypted filesystems
bcachefs: fix rand_delete unit test
bcachefs: fix ! vs ~ typo in __clear_bit_le64()
bcachefs: Fix rebalance from durability=0 device
bcachefs: Print shutdown journal sequence number
...
Paolo Abeni