Jonas Gorski says:
====================
net: dsa: b53: minor fdb related fixes
While investigating and fixing/implenting proper ARL support for
bcm63xx, I encountered multiple minor issues in the current ARL
implementation:
* The ARL multicast support was not properly enabled for older chips,
and instead a potentially reserved bit was toggled.
* While traversing the ARL table, "Search done" triggered one final
entry which will be invalid for 4 ARL bin chips, and failed to stop
the search on chips with only one result register.
* For chips where we have only one result register, we only traversed at
most half the maximum entries.
I also had a fix for IVL_SVL_SELECT which is only valid for some chips,
but since this would only have an effect for !vlan_enabled, and we
always have that enabled, it isn't really worth fixing (and rather drop
the !vlan_enabled paths).
====================
Link: https://patch.msgid.link/20251102100758.28352-1-jonas.gorski@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
When iterating over the ARL table we stop at max ARL entries / 2, but
this is only valid if the chip actually returns 2 results at once. For
chips with only one result register we will stop before reaching the end
of the table if it is more than half full.
Fix this by only dividing the maximum results by two if we have a chip
with more than one result register (i.e. those with 4 ARL bins).
Fixes: cd169d799b ("net: dsa: b53: Bound check ARL searches")
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Link: https://patch.msgid.link/20251102100758.28352-4-jonas.gorski@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The switch clears the ARL_SRCH_STDN bit when the search is done, i.e. it
finished traversing the ARL table.
This means that there will be no valid result, so we should not attempt
to read and process any further entries.
We only ever check the validity of the entries for 4 ARL bin chips, and
only after having passed the first entry to the b53_fdb_copy().
This means that we always pass an invalid entry at the end to the
b53_fdb_copy(). b53_fdb_copy() does check the validity though before
passing on the entry, so it never gets passed on.
On < 4 ARL bin chips, we will even continue reading invalid entries
until we reach the result limit.
Fixes: 1da6df85c6 ("net: dsa: b53: Implement ARL add/del/dump operations")
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Link: https://patch.msgid.link/20251102100758.28352-3-jonas.gorski@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
In the New Control register bit 1 is either reserved, or has a different
function:
Out of Range Error Discard
When enabled, the ingress port discards any frames
if the Length field is between 1500 and 1536
(excluding 1500 and 1536) and with good CRC.
The actual bit for enabling IP multicast is bit 0, which was only
explicitly enabled for BCM5325 so far.
For older switch chips, this bit defaults to 0, so we want to enable it
as well, while newer switch chips default to 1, and their documentation
says "It is illegal to set this bit to zero."
So drop the wrong B53_IPMC_FWD_EN define, enable the IP multicast bit
also for other switch chips. While at it, rename it to (B53_)IP_MC as
that is how it is called in Broadcom code.
Fixes: 63cc54a6f0 ("net: dsa: b53: Fix egress flooding settings")
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Link: https://patch.msgid.link/20251102100758.28352-2-jonas.gorski@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jonas Gorski says:
====================
net: dsa: b53: fix bcm63xx rgmii user ports with speed < 1g
It seems that the integrated switch in bcm63xx does not support polling
external PHYs for link configuration. While the appropriate registers
seem to exist with expected content, changing them does nothing.
This results in user ports with external PHYs only working in 1000/fd,
and not in other modes, despite linking up.
Fix this by writing the link result into the port state override
register, like we already do for fixed links.
With this, ports with lower speeds can successfully transmit and receive
packets.
This also aligns the behaviour with the old bcm63xx_enetsw driver for
those ports.
====================
Link: https://patch.msgid.link/20251101132807.50419-1-jonas.gorski@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
BCM63XX's switch does not support MDIO scanning of external phys, so its
MACs needs to be manually configured for autonegotiated link speeds.
So b53_force_port_config() and b53_force_link() accordingly also when
mode is MLO_AN_PHY for those ports.
Fixes lower speeds than 1000/full on rgmii ports 4 - 7.
This aligns the behaviour with the old bcm63xx_enetsw driver for those
ports.
Fixes: 967dd82ffc ("net: dsa: b53: Add support for Broadcom RoboSwitch")
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Link: https://patch.msgid.link/20251101132807.50419-3-jonas.gorski@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
There is no guarantee that the port state override registers have their
default values, as not all switches support being reset via register or
have a reset GPIO.
So when forcing port config, we need to make sure to clear all fields,
which we currently do not do for the speed and flow control
configuration. This can cause flow control stay enabled, or in the case
of speed becoming an illegal value, e.g. configured for 1G (0x2), then
setting 100M (0x1), results in 0x3 which is invalid.
For PORT_OVERRIDE_SPEED_2000M we need to make sure to only clear it on
supported chips, as the bit can have different meanings on other chips,
e.g. for BCM5389 this controls scanning PHYs for link/speed
configuration.
Fixes: 5e004460f8 ("net: dsa: b53: Add helper to set link parameters")
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Link: https://patch.msgid.link/20251101132807.50419-2-jonas.gorski@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The call to device_node_to_regmap() in airoha_mdio_probe() can return
an ERR_PTR() if regmap initialization fails. Currently, the driver
stores the pointer without validation, which could lead to a crash
if it is later dereferenced.
Add an IS_ERR() check and return the corresponding error code to make
the probe path more robust.
Fixes: 67e3ba9783 ("net: mdio: Add MDIO bus controller for Airoha AN7583")
Signed-off-by: Alok Tiwari <alok.a.tiwari@oracle.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/20251031161607.58581-1-alok.a.tiwari@oracle.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
There is a race between operations that iterate over the userdata
cg_children list and concurrent add/remove of userdata items through
configfs. The update_userdata() function iterates over the
nt->userdata_group.cg_children list, and count_extradata_entries() also
iterates over this same list to count nodes.
Quoting from Documentation/filesystems/configfs.rst:
> A subsystem can navigate the cg_children list and the ci_parent pointer
> to see the tree created by the subsystem. This can race with configfs'
> management of the hierarchy, so configfs uses the subsystem mutex to
> protect modifications. Whenever a subsystem wants to navigate the
> hierarchy, it must do so under the protection of the subsystem
> mutex.
Without proper locking, if a userdata item is added or removed
concurrently while these functions are iterating, the list can be
accessed in an inconsistent state. For example, the list_for_each() loop
can reach a node that is being removed from the list by list_del_init()
which sets the nodes' .next pointer to point to itself, so the loop will
never end (or reach the WARN_ON_ONCE in update_userdata() ).
Fix this by holding the configfs subsystem mutex (su_mutex) during all
operations that iterate over cg_children.
This includes:
- userdatum_value_store() which calls update_userdata() to iterate over
cg_children
- All sysdata_*_enabled_store() functions which call
count_extradata_entries() to iterate over cg_children
The su_mutex must be acquired before dynamic_netconsole_mutex to avoid
potential lock ordering issues, as configfs operations may already hold
su_mutex when calling into our code.
Fixes: df03f830d0 ("net: netconsole: cache userdata formatted string in netconsole_target")
Signed-off-by: Gustavo Luiz Duarte <gustavold@gmail.com>
Link: https://patch.msgid.link/20251029-netconsole-fix-warn-v1-1-0d0dd4622f48@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
After registering a VLAN device and setting its feature flags, we need to
synchronize the VLAN features with the lower device. For example, the VLAN
device does not have the NETIF_F_LRO flag, it should be synchronized with
the lower device based on the NETIF_F_UPPER_DISABLES definition.
As the dev->vlan_features has changed, we need to call
netdev_update_features(). The caller must run after netdev_upper_dev_link()
links the lower devices, so this patch adds the netdev_update_features()
call in register_vlan_dev().
Fixes: fd867d51f8 ("net/core: generic support for disabling netdev features down stack")
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Link: https://patch.msgid.link/20251030073539.133779-1-liuhangbin@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The script "ethtool-common.sh" is not installed in INSTALL_PATH, and
triggers some errors when I try to run the test
'drivers/net/netdevsim/ethtool-coalesce.sh':
TAP version 13
1..1
# timeout set to 600
# selftests: drivers/net/netdevsim: ethtool-coalesce.sh
# ./ethtool-coalesce.sh: line 4: ethtool-common.sh: No such file or directory
# ./ethtool-coalesce.sh: line 25: make_netdev: command not found
# ethtool: bad command line argument(s)
# ./ethtool-coalesce.sh: line 124: check: command not found
# ./ethtool-coalesce.sh: line 126: [: -eq: unary operator expected
# FAILED /0 checks
not ok 1 selftests: drivers/net/netdevsim: ethtool-coalesce.sh # exit=1
Install this file to avoid this error. After this patch:
TAP version 13
1..1
# timeout set to 600
# selftests: drivers/net/netdevsim: ethtool-coalesce.sh
# PASSED all 22 checks
ok 1 selftests: drivers/net/netdevsim: ethtool-coalesce.sh
Fixes: fbb8531e58 ("selftests: extract common functions in ethtool-common.sh")
Signed-off-by: Wang Liang <wangliang74@huawei.com>
Link: https://patch.msgid.link/20251030040340.3258110-1-wangliang74@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
In hfcsusb_probe(), the memory allocated for ctrl_urb gets leaked when
setup_instance() fails with an error code. Fix that by freeing the urb
before freeing the hw structure. Also change the error paths to use the
goto ladder style.
Compile tested only. Issue found using a prototype static analysis tool.
Fixes: 69f52adb2d ("mISDN: Add HFC USB driver")
Signed-off-by: Abdun Nihaal <nihaal@cse.iitm.ac.in>
Link: https://patch.msgid.link/20251030042524.194812-1-nihaal@cse.iitm.ac.in
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The GRO self-test, gro.c, currently constructs IPv6 packets containing a
Hop-by-Hop Options header (IPPROTO_HOPOPTS) to ensure the GRO path
correctly handles IPv6 extension headers.
However, network elements may be configured to drop packets with the
Hop-by-Hop Options header (HBH). This causes the self-test to fail
in environments where such network elements are present.
To improve the robustness and reliability of this test in diverse
network environments, switch from using IPPROTO_HOPOPTS to
IPPROTO_DSTOPTS (Destination Options).
The Destination Options header is less likely to be dropped by
intermediate routers and still serves the core purpose of the test:
validating GRO's handling of an IPv6 extension header. This change
ensures the test can execute successfully without being incorrectly
failed by network policies outside the kernel's control.
Fixes: 7d1575014a ("selftests/net: GRO coalesce test")
Reviewed-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Anubhav Singh <anubhavsinggh@google.com>
Link: https://patch.msgid.link/20251030060436.1556664-1-anubhavsinggh@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Due to the gro_sender sending data packets and FIN packets
in very quick succession, these are received almost simultaneously
by the gro_receiver. FIN packets are sometimes processed before the
data packets leading to intermittent (~1/100) test failures.
This change adds a delay of 100ms before sending FIN packets
in gro:tcp test to avoid the out-of-order delivery. The same
mitigation already exists for the gro:ip test.
Fixes: 7d1575014a ("selftests/net: GRO coalesce test")
Reviewed-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Anubhav Singh <anubhavsinggh@google.com>
Link: https://patch.msgid.link/20251030062818.1562228-1-anubhavsinggh@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The internal switch on BCM63XX SoCs will unconditionally add 802.1Q VLAN
tags on egress to CPU when 802.1Q mode is enabled. We do this
unconditionally since commit ed409f3bba ("net: dsa: b53: Configure
VLANs while not filtering").
This is fine for VLAN aware bridges, but for standalone ports and vlan
unaware bridges this means all packets are tagged with the default VID,
which is 0.
While the kernel will treat that like untagged, this can break userspace
applications processing raw packets, expecting untagged traffic, like
STP daemons.
This also breaks several bridge tests, where the tcpdump output then
does not match the expected output anymore.
Since 0 isn't a valid VID, just strip out the VLAN tag if we encounter
it, unless the priority field is set, since that would be a valid tag
again.
Fixes: 964dbf186e ("net: dsa: tag_brcm: add support for legacy tags")
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Link: https://patch.msgid.link/20251027194621.133301-1-jonas.gorski@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The PTP core falls back to gettimex64 and getcrosststamp when
getcycles64 or getcyclesx64 are not implemented. This causes the CYCLES
ioctls to retrieve PHC real time instead of free-running cycles.
Reject PTP_SYS_OFFSET_{PRECISE,EXTENDED}_CYCLES for clocks without
free-running counter support since the result would represent PHC real
time and system time rather than cycles and system time.
Fixes: faf23f54d3 ("ptp: Add ioctl commands to expose raw cycle counter values")
Signed-off-by: Carolina Jubran <cjubran@nvidia.com>
Reviewed-by: Dragos Tatulea <dtatulea@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Reviewed-by: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Link: https://patch.msgid.link/20251029083813.2276997-1-cjubran@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Tim Hostetler says:
====================
gve: Fix NULL dereferencing with PTP clock
This patch series fixes NULL dereferences that are possible with gve's
PTP clock due to not stubbing certain ptp_clock_info callbacks.
====================
Link: https://patch.msgid.link/20251029184555.3852952-1-joshwash@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
gve implemented a ptp_clock for sole use of do_aux_work at this time.
ptp_clock_gettime() and ptp_sys_offset() assume every ptp_clock has
implemented either gettimex64 or gettime64. Stub gettimex64 and return
-EOPNOTSUPP to prevent NULL dereferencing.
Fixes: acd1638052 ("gve: Add initial PTP device support")
Reported-by: syzbot+c8c0e7ccabd456541612@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=c8c0e7ccabd456541612
Signed-off-by: Tim Hostetler <thostet@google.com>
Reviewed-by: Harshitha Ramamurthy <hramamurthy@google.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com>
Signed-off-by: Joshua Washington <joshwash@google.com>
Link: https://patch.msgid.link/20251029184555.3852952-2-joshwash@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
- ath10k: revert a patch that had caused issues on some devices
- cfg80211/mac80211: use hrtimers for some things where the
precise timing matters
- zd1211rw: fix a long-standing potential leak
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Merge tag 'wireless-2025-10-30' of https://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless
Johannes Berg says:
====================
Couple of new fixes:
- ath10k: revert a patch that had caused issues on some devices
- cfg80211/mac80211: use hrtimers for some things where the
precise timing matters
- zd1211rw: fix a long-standing potential leak
* tag 'wireless-2025-10-30' of https://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless:
wifi: zd1211rw: fix potential memory leak in __zd_usb_enable_rx()
wifi: mac80211: use wiphy_hrtimer_work for csa.switch_work
wifi: mac80211: use wiphy_hrtimer_work for ml_reconf_work
wifi: mac80211: use wiphy_hrtimer_work for ttlm_work
wifi: cfg80211: add an hrtimer based delayed work item
Revert "wifi: ath10k: avoid unnecessary wait for service ready message"
====================
Link: https://patch.msgid.link/20251030104919.12871-3-johannes@sipsolutions.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
In the parse_adv_monitor_pattern() function, the value of
the 'length' variable is currently limited to HCI_MAX_EXT_AD_LENGTH(251).
The size of the 'value' array in the mgmt_adv_pattern structure is 31.
If the value of 'pattern[i].length' is set in the user space
and exceeds 31, the 'patterns[i].value' array can be accessed
out of bound when copied.
Increasing the size of the 'value' array in
the 'mgmt_adv_pattern' structure will break the userspace.
Considering this, and to avoid OOB access revert the limits for 'offset'
and 'length' back to the value of HCI_MAX_AD_LENGTH.
Found by InfoTeCS on behalf of Linux Verification Center
(linuxtesting.org) with SVACE.
Fixes: db08722fc7 ("Bluetooth: hci_core: Fix missing instances using HCI_MAX_AD_LENGTH")
Cc: stable@vger.kernel.org
Signed-off-by: Ilia Gavrilov <Ilia.Gavrilov@infotecs.ru>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
The memory allocated for ptr using kvmalloc() is not freed on the last
error path. Fix that by freeing it on that error path.
Fixes: 9a24ce5e29 ("Bluetooth: btrtl: Firmware format v2 support")
Signed-off-by: Abdun Nihaal <nihaal@cse.iitm.ac.in>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
In hci_cmd_complete_evt(), if the command complete event has an unknown
opcode, we assume the first byte of the remaining skb->data contains the
return status. However, parameter data has previously been pulled in
hci_event_func(), which may leave the skb empty. If so, using skb->data[0]
for the return status uses un-init memory.
The fix is to check skb->len before using skb->data.
Reported-by: syzbot+a9a4bedfca6aa9d7fa24@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=a9a4bedfca6aa9d7fa24
Tested-by: syzbot+a9a4bedfca6aa9d7fa24@syzkaller.appspotmail.com
Fixes: afcb3369f4 ("Bluetooth: hci_event: Fix vendor (unknown) opcode status handling")
Signed-off-by: Raphael Pinsonneault-Thibeault <rpthibeault@gmail.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
The memory allocated for urbs with kcalloc() is not freed on any error
path. Fix that by freeing it in the error path.
Fixes: e85d0918b5 ("[PATCH] ZyDAS ZD1211 USB-WLAN driver")
Signed-off-by: Abdun Nihaal <nihaal@cse.iitm.ac.in>
Link: https://patch.msgid.link/20251028174341.139134-1-nihaal@cse.iitm.ac.in
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The zero-copy Device Memory (Devmem) transmit path
relies on the socket's route cache (`dst_entry`) to
validate that the packet is being sent via the network
device to which the DMA buffer was bound.
However, this check incorrectly fails and returns `-ENODEV`
if the socket's route cache entry (`dst`) is merely missing
or expired (`dst == NULL`). This scenario is observed during
network events, such as when flow steering rules are deleted,
leading to a temporary route cache invalidation.
This patch fixes -ENODEV error for `net_devmem_get_binding()`
by doing the following:
1. It attempts to rebuild the route via `rebuild_header()`
if the route is initially missing (`dst == NULL`). This
allows the TCP/IP stack to recover from transient route
cache misses.
2. It uses `rcu_read_lock()` and `dst_dev_rcu()` to safely
access the network device pointer (`dst_dev`) from the
route, preventing use-after-free conditions if the
device is concurrently removed.
3. It maintains the critical safety check by validating
that the retrieved destination device (`dst_dev`) is
exactly the device registered in the Devmem binding
(`binding->dev`).
These changes prevent unnecessary ENODEV failures while
maintaining the critical safety requirement that the
Devmem resources are only used on the bound network device.
Reviewed-by: Bobby Eshleman <bobbyeshleman@meta.com>
Reported-by: Eric Dumazet <edumazet@google.com>
Reported-by: Vedant Mathur <vedantmathur@google.com>
Suggested-by: Eric Dumazet <edumazet@google.com>
Fixes: bd61848900 ("net: devmem: Implement TX path")
Signed-off-by: Shivaji Kant <shivajikant@google.com>
Link: https://patch.msgid.link/20251029065420.3489943-1-shivajikant@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Rohan G Thomas says:
====================
net: stmmac: Fixes for stmmac Tx VLAN insert and EST
This patchset includes following fixes for stmmac Tx VLAN insert and
EST implementations:
1. Disable STAG insertion offloading, as DWMAC IPs doesn't support
offload of STAG for double VLAN packets and CTAG for single VLAN
packets when using the same register configuration. The current
configuration in the driver is undocumented and is adding an
additional 802.1Q tag with VLAN ID 0 for double VLAN packets.
2. Consider Tx VLAN offload tag length for maxSDU estimation.
3. Fix GCL bounds check
====================
Link: https://patch.msgid.link/20251028-qbv-fixes-v4-0-26481c7634e3@altera.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Fix the bounds checks for the hw supported maximum GCL entry
count and gate interval time.
Fixes: b60189e039 ("net: stmmac: Integrate EST with TAPRIO scheduler API")
Signed-off-by: Rohan G Thomas <rohan.g.thomas@altera.com>
Reviewed-by: Matthew Gerlach <matthew.gerlach@altera.com>
Link: https://patch.msgid.link/20251028-qbv-fixes-v4-3-26481c7634e3@altera.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Queue maxSDU requirement of 802.1 Qbv standard requires mac to drop
packets that exceeds maxSDU length and maxSDU doesn't include
preamble, destination and source address, or FCS but includes
ethernet type and VLAN header.
On hardware with Tx VLAN offload enabled, VLAN header length is not
included in the skb->len, when Tx VLAN offload is requested. This
leads to incorrect length checks and allows transmission of
oversized packets. Add the VLAN_HLEN to the skb->len before checking
the Qbv maxSDU if Tx VLAN offload is requested for the packet.
Fixes: c5c3e1bfc9 ("net: stmmac: Offload queueMaxSDU from tc-taprio")
Signed-off-by: Rohan G Thomas <rohan.g.thomas@altera.com>
Reviewed-by: Matthew Gerlach <matthew.gerlach@altera.com>
Link: https://patch.msgid.link/20251028-qbv-fixes-v4-2-26481c7634e3@altera.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The DWMAC IP's VLAN tag insertion offload does not support inserting
STAG (802.1AD) and CTAG (802.1Q) types in bytes 13 and 14 using the
same MAC_VLAN_Incl and MAC_VLAN_Inner_Incl register configurations.
Currently, MAC_VLAN_Incl is configured to offload only STAG type
insertion. However, the DWMAC IP inserts a CTAG type when the inner
VLAN ID field of the descriptor is not configured, and a STAG type
when it is configured. This behavior is not documented and leads to
inconsistent double VLAN tagging.
Additionally, an unexpected CTAG with VLAN ID 0 is inserted, resulting
in frames like:
Frame 1: 110 bytes on wire (880 bits), 110 bytes captured (880 bits)
Ethernet II, Src: <src> (<src>), Dst: <dst> (<dst>)
IEEE 802.1ad, ID: 100
802.1Q Virtual LAN, PRI: 0, DEI: 0, ID: 0 (unexpected)
802.1Q Virtual LAN, PRI: 0, DEI: 0, ID: 200
Internet Protocol Version 4, Src: 192.168.4.10, Dst: 192.168.4.11
Internet Control Message Protocol
To avoid this undocumented and incorrect behavior, disable 802.1AD tag
insertion offload. Also, don't set CSVL bit. As per the data book,
when this bit is set, S-VLAN type (0x88A8) is inserted in the 13th and
14th bytes of transmitted packets and when this bit is reset, C-VLAN
type (0x8100) is inserted in the 13th and 14th bytes of transmitted
packets.
Fixes: 30d932279d ("net: stmmac: Add support for VLAN Insertion Offload")
Fixes: e94e3f3b51 ("net: stmmac: Add support for VLAN Insertion Offload in GMAC4+")
Fixes: 1d2c7a5fee ("net: stmmac: Refactor VLAN implementation")
Signed-off-by: Rohan G Thomas <rohan.g.thomas@altera.com>
Reviewed-by: Boon Khai Ng <boon.khai.ng@altera.com>
Link: https://patch.msgid.link/20251028-qbv-fixes-v4-1-26481c7634e3@altera.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Tariq Toukan says:
====================
tls: Introduce and use RX async resync request cancel function
This series by Shahar introduces RX async resync request cancel function
in tls module, and uses it in mlx5e driver.
For a device-offloaded TLS RX connection, the TLS module increments
rcd_delta each time a new TLS record is received, tracking the distance
from the original resync request. In the meanwhile, the device is
queried and is expected to respond, asynchronously.
However, if the device response is delayed or fails (e.g due to unstable
connection and device getting out of tracking, hardware errors, resource
exhaustion etc.), the TLS module keeps logging and incrementing
rcd_delta, which can lead to a WARN() when rcd_delta exceeds the
threshold.
This series improves this code area by canceling the resync request when
spotting an issue with the device response.
====================
Link: https://patch.msgid.link/1761508983-937977-1-git-send-email-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
When device loses track of TLS records, it attempts to resync by
monitoring records and requests an asynchronous resynchronization
from software for this TLS connection.
The TLS module handles such device RX resync requests by logging record
headers and comparing them with the record tcp_sn when provided by the
device. It also increments rcd_delta to track how far the current
record tcp_sn is from the tcp_sn of the original resync request.
If the device later responds with a matching tcp_sn, the TLS module
approves the tcp_sn for resync.
However, the device response may be delayed or never arrive,
particularly due to traffic-related issues such as packet drops or
reordering. In such cases, the TLS module remains unaware that resync
will not complete, and continues performing unnecessary work by logging
headers and incrementing rcd_delta, which can eventually exceed the
threshold and trigger a WARN(). For example, this was observed when the
device got out of tracking, causing
mlx5e_ktls_handle_get_psv_completion() to fail and ultimately leading
to the rcd_delta warning.
To address this, call tls_offload_rx_resync_async_request_cancel()
to cancel the resync request and stop resync tracking in such error
cases. Also, increment the tls_resync_req_skip counter to track these
cancellations.
Fixes: 0419d8c9d8 ("net/mlx5e: kTLS, Add kTLS RX resync support")
Signed-off-by: Shahar Shitrit <shshitrit@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/1761508983-937977-4-git-send-email-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
When a netdev issues a RX async resync request for a TLS connection,
the TLS module handles it by logging record headers and attempting to
match them to the tcp_sn provided by the device. If a match is found,
the TLS module approves the tcp_sn for resynchronization.
While waiting for a device response, the TLS module also increments
rcd_delta each time a new TLS record is received, tracking the distance
from the original resync request.
However, if the device response is delayed or fails (e.g due to
unstable connection and device getting out of tracking, hardware
errors, resource exhaustion etc.), the TLS module keeps logging and
incrementing, which can lead to a WARN() when rcd_delta exceeds the
threshold.
To address this, introduce tls_offload_rx_resync_async_request_cancel()
to explicitly cancel resync requests when a device response failure is
detected. Call this helper also as a final safeguard when rcd_delta
crosses its threshold, as reaching this point implies that earlier
cancellation did not occur.
Signed-off-by: Shahar Shitrit <shshitrit@nvidia.com>
Reviewed-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/1761508983-937977-3-git-send-email-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Update tls_offload_rx_resync_async_request_start() and
tls_offload_rx_resync_async_request_end() to get a struct
tls_offload_resync_async parameter directly, rather than
extracting it from struct sock.
This change aligns the function signatures with the upcoming
tls_offload_rx_resync_async_request_cancel() helper, which
will be introduced in a subsequent patch.
Signed-off-by: Shahar Shitrit <shshitrit@nvidia.com>
Reviewed-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/1761508983-937977-2-git-send-email-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'nf-25-10-29' of https://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf
Florian Westphal says:
====================
netfilter: updates for net
1) its not possible to attach conntrack labels via ctnetlink
unless one creates a dummy 'ct labels set' rule in nftables.
This is an oversight, the 'ruleset tests presence, userspace
(netlink) sets' use-case is valid and should 'just work'.
Always broken since this got added in Linux 4.7.
2) nft_connlimit reads count value without holding the relevant
lock, add a READ_ONCE annotation. From Fernando Fernandez Mancera.
3) There is a long-standing bug (since 4.12) in nftables helper infra
when NAT is in use: if the helper gets assigned after the nat binding
was set up, we fail to initialise the 'seqadj' extension, which is
needed in case NAT payload rewrites need to add (or remove) from the
packet payload. Fix from Andrii Melnychenko.
* tag 'nf-25-10-29' of https://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf:
netfilter: nft_ct: add seqadj extension for natted connections
netfilter: nft_connlimit: fix possible data race on connection count
netfilter: nft_ct: enable labels for get case too
====================
Link: https://patch.msgid.link/20251029135617.18274-1-fw@strlen.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
According to the TI DP83869HM datasheet Revision D (June 2025), section
7.6.1.41 STRAP_STS Register, the STRAP_OPMODE bitmask is bit [11:9].
Fix this.
In case the PHY is auto-detected via PHY ID registers, or not described
in DT, or, in case the PHY is described in DT but the optional DT property
"ti,op-mode" is not present, then the driver reads out the PHY functional
mode (RGMII, SGMII, ...) from hardware straps.
Currently, all upstream users of this PHY specify both DT compatible string
"ethernet-phy-id2000.a0f1" and ti,op-mode = <DP83869_RGMII_COPPER_ETHERNET>
property, therefore it seems no upstream users are affected by this bug.
The driver currently interprets bits [2:0] of STRAP_STS register as PHY
functional mode. Those bits are controlled by ANEG_DIS, ANEGSEL_0 straps
and an always-zero reserved bit. Systems that use RGMII-to-Copper functional
mode are unlikely to disable auto-negotiation via ANEG_DIS strap, or change
auto-negotiation behavior via ANEGSEL_0 strap. Therefore, even with this bug
in place, the STRAP_STS register content is likely going to be interpreted
by the driver as RGMII-to-Copper mode.
However, for a system with PHY functional mode strapping set to other mode
than RGMII-to-Copper, the driver is likely to misinterpret the strapping
as RGMII-to-Copper and misconfigure the PHY.
For example, on a system with SGMII-to-Copper strapping, the STRAP_STS
register reads as 0x0c20, but the PHY ends up being configured for
incompatible RGMII-to-Copper mode.
Fixes: 0eaf8ccf20 ("net: phy: dp83869: Set opmode from straps")
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Thanh Quan <thanh.quan.xn@renesas.com>
Signed-off-by: Hai Pham <hai.pham.ud@renesas.com>
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org> # Port from U-Boot to Linux
Link: https://patch.msgid.link/20251027140320.8996-1-marek.vasut+renesas@mailbox.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
In bareudp.sh, this script uses /bin/sh and it will load another lib.sh
BASH script at the very beginning.
But on some operating systems like Ubuntu, /bin/sh is actually pointed to
DASH, thus it will try to run BASH commands with DASH and consequently
leads to syntax issues:
# ./bareudp.sh: 4: ./lib.sh: Bad substitution
# ./bareudp.sh: 5: ./lib.sh: source: not found
# ./bareudp.sh: 24: ./lib.sh: Syntax error: "(" unexpected
Fix this by explicitly using BASH for bareudp.sh. This fixes test
execution failures on systems where /bin/sh is not BASH.
Reported-by: Edoardo Canepa <edoardo.canepa@canonical.com>
Link: https://bugs.launchpad.net/bugs/2129812
Signed-off-by: Po-Hsu Lin <po-hsu.lin@canonical.com>
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Link: https://patch.msgid.link/20251027095710.2036108-2-po-hsu.lin@canonical.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The tx queue can become permanently stuck in a stopped state due to a
race condition between the URB submission path and its completion
callback.
The URB completion callback can run immediately after usb_submit_urb()
returns, before the submitting function calls netif_stop_queue(). If
this occurs, the queue state management becomes desynchronized, leading
to a stall where the queue is never woken.
Fix this by moving the netif_stop_queue() call to before submitting the
URB. This closes the race window by ensuring the network stack is aware
the queue is stopped before the URB completion can possibly run.
Fixes: 0791c0327a ("net: mctp: Add MCTP USB transport driver")
Signed-off-by: Jinliang Wang <jinliangw@google.com>
Acked-by: Jeremy Kerr <jk@codeconstruct.com.au>
Link: https://patch.msgid.link/20251027065530.2045724-1-jinliangw@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
esw->user_count tracks how many TC rules are added on an esw via
mlx5e_configure_flower -> mlx5_esw_get -> atomic64_inc(&esw->user_count)
esw.user_count was unconditionally set to 0 in
esw_destroy_legacy_fdb_table and esw_destroy_offloads_fdb_tables.
These two together can lead to the following sequence of events:
1. echo 1 > /sys/class/net/eth2/device/sriov_numvfs
- mlx5_core_sriov_configure -...-> esw_create_legacy_table ->
atomic64_set(&esw->user_count, 0)
2. tc qdisc add dev eth2 ingress && \
tc filter replace dev eth2 pref 1 protocol ip chain 0 ingress \
handle 1 flower action ct nat zone 64000 pipe
- mlx5e_configure_flower -> mlx5_esw_get ->
atomic64_inc(&esw->user_count)
3. echo 0 > /sys/class/net/eth2/device/sriov_numvfs
- mlx5_core_sriov_configure -..-> esw_destroy_legacy_fdb_table
-> atomic64_set(&esw->user_count, 0)
4. devlink dev eswitch set pci/0000:08:00.0 mode switchdev
- mlx5_devlink_eswitch_mode_set -> mlx5_esw_try_lock ->
atomic64_read(&esw->user_count) == 0
- then proceed to a WARN_ON in:
esw_offloads_start -> mlx5_eswitch_enable_locke -> esw_offloads_enable
-> mlx5_esw_offloads_rep_load -> mlx5e_vport_rep_load ->
mlx5e_netdev_change_profile -> mlx5e_detach_netdev ->
mlx5e_cleanup_nic_rx -> mlx5e_tc_nic_cleanup ->
mlx5e_mod_hdr_tbl_destroy
Fix this by not clearing out the user_count when destroying FDB tables,
so that the check in mlx5_esw_try_lock can prevent the mode change when
there are TC rules configured, as originally intended.
Fixes: 2318b8bb94 ("net/mlx5: E-switch, Destroy legacy fdb table when needed")
Signed-off-by: Cosmin Ratiu <cratiu@nvidia.com>
Reviewed-by: Dragos Tatulea <dtatulea@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/1761510019-938772-1-git-send-email-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The code did not check the return value of usbnet_get_endpoints.
Add checks and return the error if it fails to transfer the error.
Found via static anlaysis and this is similar to
commit 07161b2416 ("sr9800: Add check for usbnet_get_endpoints").
Fixes: 933a27d39e ("USB: asix - Add AX88178 support and many other changes")
Fixes: 2e55cc7210 ("[PATCH] USB: usbnet (3/9) module for ASIX Ethernet adapters")
Cc: stable@vger.kernel.org
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Link: https://patch.msgid.link/20251026164318.57624-1-linmq006@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Matthieu Baerts says:
====================
mptcp: various rare sending issues
Here are various fixes from Paolo, addressing very occasional issues on
the sending side:
- Patch 1: drop an optimisation that could lead to timeout in case of
race conditions. A fix for up to v5.11.
- Patch 2: fix stream corruption under very specific conditions.
A fix for up to v5.13.
- Patch 3: restore MPTCP-level zero window probe after a recent fix.
A fix for up to v5.16.
- Patch 4: new MIB counter to track MPTCP-level zero windows probe to
help catching issues similar to the one fixed by the previous patch.
====================
Link: https://patch.msgid.link/20251028-net-mptcp-send-timeout-v1-0-38ffff5a9ec8@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Explicitly account for MPTCP-level zero windows probe, to catch
hopefully earlier issues alike the one addressed by the previous
patch.
Reviewed-by: Mat Martineau <martineau@kernel.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Tested-by: Geliang Tang <geliang@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20251028-net-mptcp-send-timeout-v1-4-38ffff5a9ec8@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Since commit 72377ab2d6 ("mptcp: more conservative check for zero
probes") the MPTCP-level zero window probe check is always disabled, as
the TCP-level write queue always contains at least the newly allocated
skb.
Refine the relevant check tacking in account that the above condition
and that such skb can have zero length.
Fixes: 72377ab2d6 ("mptcp: more conservative check for zero probes")
Cc: stable@vger.kernel.org
Reported-by: Geliang Tang <geliang@kernel.org>
Closes: https://lore.kernel.org/d0a814c364e744ca6b836ccd5b6e9146882e8d42.camel@kernel.org
Reviewed-by: Mat Martineau <martineau@kernel.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Tested-by: Geliang Tang <geliang@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20251028-net-mptcp-send-timeout-v1-3-38ffff5a9ec8@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
If a MSG_PEEK | MSG_WAITALL read operation consumes all the bytes in the
receive queue and recvmsg() need to waits for more data - i.e. it's a
blocking one - upon arrival of the next packet the MPTCP protocol will
start again copying the oldest data present in the receive queue,
corrupting the data stream.
Address the issue explicitly tracking the peeked sequence number,
restarting from the last peeked byte.
Fixes: ca4fb89257 ("mptcp: add MSG_PEEK support")
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Geliang Tang <geliang@kernel.org>
Tested-by: Geliang Tang <geliang@kernel.org>
Reviewed-by: Mat Martineau <martineau@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20251028-net-mptcp-send-timeout-v1-2-38ffff5a9ec8@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Accessing the transmit queue without owning the msk socket lock is
inherently racy, hence __mptcp_check_push() could actually quit early
even when there is pending data.
That in turn could cause unexpected tx lock and timeout.
Dropping the early check avoids the race, implicitly relaying on later
tests under the relevant lock. With such change, all the other
mptcp_send_head() call sites are now under the msk socket lock and we
can additionally drop the now unneeded annotation on the transmit head
pointer accesses.
Fixes: 6e628cd3a8 ("mptcp: use mptcp release_cb for delayed tasks")
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Geliang Tang <geliang@kernel.org>
Tested-by: Geliang Tang <geliang@kernel.org>
Reviewed-by: Mat Martineau <martineau@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20251028-net-mptcp-send-timeout-v1-1-38ffff5a9ec8@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The update_userdata() function constructs the complete userdata string
in nt->extradata_complete and updates nt->userdata_length. This data
is then read by write_msg() and write_ext_msg() when sending netconsole
messages. However, update_userdata() was not holding target_list_lock
during this process, allowing concurrent message transmission to read
partially updated userdata.
This race condition could result in netconsole messages containing
incomplete or inconsistent userdata - for example, reading the old
userdata_length with new extradata_complete content, or vice versa,
leading to truncated or corrupted output.
Fix this by acquiring target_list_lock with spin_lock_irqsave() before
updating extradata_complete and userdata_length, and releasing it after
both fields are fully updated. This ensures that readers see a
consistent view of the userdata, preventing corruption during concurrent
access.
The fix aligns with the existing locking pattern used throughout the
netconsole code, where target_list_lock protects access to target
fields including buf[] and msgcounter that are accessed during message
transmission.
Also get rid of the unnecessary variable complete_idx, which makes it
easier to bail out of update_userdata().
Fixes: df03f830d0 ("net: netconsole: cache userdata formatted string in netconsole_target")
Signed-off-by: Gustavo Luiz Duarte <gustavold@gmail.com>
Link: https://patch.msgid.link/20251028-netconsole-fix-race-v4-1-63560b0ae1a0@meta.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Breno Leitao has been listed in MAINTAINERS as netconsole maintainer
since 7c938e438c ("MAINTAINERS: make Breno the netconsole
maintainer"), but the documentation says otherwise that bug reports
should be sent to original netconsole authors.
Remove obsolate contact info.
Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Link: https://patch.msgid.link/20251028132027.48102-1-bagasdotme@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
