linux.git/drivers/net, branch v6.16-rc2

Merge tag 'net-6.16-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2025-06-12T16:50:36+00:00

Pull networking fixes from Jakub Kicinski:
 "Including fixes from bluetooth and wireless.

  Current release - regressions:

   - af_unix: allow passing cred for embryo without SO_PASSCRED/SO_PASSPIDFD

  Current release - new code bugs:

   - eth: airoha: correct enable mask for RX queues 16-31

   - veth: prevent NULL pointer dereference in veth_xdp_rcv when peer
     disappears under traffic

   - ipv6: move fib6_config_validate() to ip6_route_add(), prevent
     invalid routes

  Previous releases - regressions:

   - phy: phy_caps: don't skip better duplex match on non-exact match

   - dsa: b53: fix untagged traffic sent via cpu tagged with VID 0

   - Revert "wifi: mwifiex: Fix HT40 bandwidth issue.", it caused
     transient packet loss, exact reason not fully understood, yet

  Previous releases - always broken:

   - net: clear the dst when BPF is changing skb protocol (IPv4 <> IPv6)

   - sched: sfq: fix a potential crash on gso_skb handling

   - Bluetooth: intel: improve rx buffer posting to avoid causing issues
     in the firmware

   - eth: intel: i40e: make reset handling robust against multiple
     requests

   - eth: mlx5: ensure FW pages are always allocated on the local NUMA
     node, even when device is configure to 'serve' another node

   - wifi: ath12k: fix GCC_GCC_PCIE_HOT_RST definition for WCN7850,
     prevent kernel crashes

   - wifi: ath11k: avoid burning CPU in ath11k_debugfs_fw_stats_request()
     for 3 sec if fw_stats_done is not set"

* tag 'net-6.16-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (70 commits)
  selftests: drv-net: rss_ctx: Add test for ntuple rules targeting default RSS context
  net: ethtool: Don't check if RSS context exists in case of context 0
  af_unix: Allow passing cred for embryo without SO_PASSCRED/SO_PASSPIDFD.
  ipv6: Move fib6_config_validate() to ip6_route_add().
  net: drv: netdevsim: don't napi_complete() from netpoll
  net/mlx5: HWS, Add error checking to hws_bwc_rule_complex_hash_node_get()
  veth: prevent NULL pointer dereference in veth_xdp_rcv
  net_sched: remove qdisc_tree_flush_backlog()
  net_sched: ets: fix a race in ets_qdisc_change()
  net_sched: tbf: fix a race in tbf_change()
  net_sched: red: fix a race in __red_change()
  net_sched: prio: fix a race in prio_tune()
  net_sched: sch_sfq: reject invalid perturb period
  net: phy: phy_caps: Don't skip better duplex macth on non-exact match
  MAINTAINERS: Update Kuniyuki Iwashima's email address.
  selftests: net: add test case for NAT46 looping back dst
  net: clear the dst when changing skb protocol
  net/mlx5e: Fix number of lanes to UNKNOWN when using data_rate_oper
  net/mlx5e: Fix leak of Geneve TLV option object
  net/mlx5: HWS, make sure the uplink is the last destination
  ...

Merge tag 'wireless-2025-06-12' of https://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless

2025-06-12T15:16:47+00:00

Johannes Berg says:

====================
Another quick round of updates:

 - revert mwifiex HT40 that was causing issues
 - many ath10k/ath11k/ath12k fixes
 - re-add some iwlwifi code I lost in a merge
 - use kfree_sensitive() on an error path in cfg80211

* tag 'wireless-2025-06-12' of https://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless:
  wifi: cfg80211: use kfree_sensitive() for connkeys cleanup
  wifi: iwlwifi: fix merge damage related to iwl_pci_resume
  Revert "wifi: mwifiex: Fix HT40 bandwidth issue."
  wifi: ath12k: fix uaf in ath12k_core_init()
  wifi: ath12k: Fix hal_reo_cmd_status kernel-doc
  wifi: ath12k: fix GCC_GCC_PCIE_HOT_RST definition for WCN7850
  wifi: ath11k: validate ath11k_crypto_mode on top of ath11k_core_qmi_firmware_ready
  wifi: ath11k: consistently use ath11k_mac_get_fw_stats()
  wifi: ath11k: move locking outside of ath11k_mac_get_fw_stats()
  wifi: ath11k: adjust unlock sequence in ath11k_update_stats_event()
  wifi: ath11k: move some firmware stats related functions outside of debugfs
  wifi: ath11k: don't wait when there is no vdev started
  wifi: ath11k: don't use static variables in ath11k_debugfs_fw_stats_process()
  wifi: ath11k: avoid burning CPU in ath11k_debugfs_fw_stats_request()
  wil6210: fix support for sparrow chipsets
  wifi: ath10k: Avoid vdev delete timeout when firmware is already down
  ath10k: snoc: fix unbalanced IRQ enable in crash recovery
====================

Link: https://patch.msgid.link/20250612082519.11447-3-johannes@sipsolutions.net
Signed-off-by: Jakub Kicinski

net: drv: netdevsim: don't napi_complete() from netpoll

2025-06-12T15:11:52+00:00

netdevsim supports netpoll. Make sure we don't call napi_complete()
from it, since it may not be scheduled. Breno reports hitting a
warning in napi_complete_done():

WARNING: CPU: 14 PID: 104 at net/core/dev.c:6592 napi_complete_done+0x2cc/0x560
  __napi_poll+0x2d8/0x3a0
  handle_softirqs+0x1fe/0x710

This is presumably after netpoll stole the SCHED bit prematurely.

Reported-by: Breno Leitao 
Fixes: 3762ec05a9fb ("netdevsim: add NAPI support")
Tested-by: Breno Leitao 
Link: https://patch.msgid.link/20250611174643.2769263-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski

net/mlx5: HWS, Add error checking to hws_bwc_rule_complex_hash_node_get()

2025-06-12T15:10:07+00:00

Check for if ida_alloc() or rhashtable_lookup_get_insert_fast() fails.

Fixes: 17e0accac577 ("net/mlx5: HWS, support complex matchers")
Signed-off-by: Dan Carpenter 
Reviewed-by: Yevgeny Kliteynik 
Link: https://patch.msgid.link/aEmBONjyiF6z5yCV@stanley.mountain
Signed-off-by: Jakub Kicinski

veth: prevent NULL pointer dereference in veth_xdp_rcv

2025-06-12T15:08:32+00:00

The veth peer device is RCU protected, but when the peer device gets
deleted (veth_dellink) then the pointer is assigned NULL (via
RCU_INIT_POINTER).

This patch adds a necessary NULL check in veth_xdp_rcv when accessing
the veth peer net_device.

This fixes a bug introduced in commit dc82a33297fc ("veth: apply qdisc
backpressure on full ptr_ring to reduce TX drops"). The bug is a race
and only triggers when having inflight packets on a veth that is being
deleted.

Reported-by: Ihor Solodrai 
Closes: https://lore.kernel.org/all/fecfcad0-7a16-42b8-bff2-66ee83a6e5c4@linux.dev/
Reported-by: syzbot+c4c7bf27f6b0c4bd97fe@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/all/683da55e.a00a0220.d8eae.0052.GAE@google.com/
Fixes: dc82a33297fc ("veth: apply qdisc backpressure on full ptr_ring to reduce TX drops")
Signed-off-by: Jesper Dangaard Brouer 
Acked-by: Ihor Solodrai 
Link: https://patch.msgid.link/174964557873.519608.10855046105237280978.stgit@firesoul
Signed-off-by: Jakub Kicinski

net: phy: phy_caps: Don't skip better duplex macth on non-exact match

2025-06-12T15:00:53+00:00

When performing a non-exact phy_caps lookup, we are looking for a
supported mode that matches as closely as possible the passed speed/duplex.

Blamed patch broke that logic by returning a match too early in case
the caller asks for half-duplex, as a full-duplex linkmode may match
first, and returned as a non-exact match without even trying to mach on
half-duplex modes.

Reported-by: Jijie Shao 
Closes: https://lore.kernel.org/netdev/20250603102500.4ec743cf@fedora/T/#m22ed60ca635c67dc7d9cbb47e8995b2beb5c1576
Tested-by: Jijie Shao 
Reviewed-by: Larysa Zaremba 
Fixes: fc81e257d19f ("net: phy: phy_caps: Allow looking-up link caps based on speed and duplex")
Signed-off-by: Maxime Chevallier 
Link: https://patch.msgid.link/20250606094321.483602-1-maxime.chevallier@bootlin.com
Signed-off-by: Jakub Kicinski

net/mlx5e: Fix number of lanes to UNKNOWN when using data_rate_oper

2025-06-11T21:41:15+00:00

When the link is up, either eth_proto_oper or ext_eth_proto_oper
typically reports the active link protocol, from which both speed
and number of lanes can be retrieved. However, in certain cases,
such as when a NIC is connected via a non-standard cable, the
firmware may not report the protocol.

In such scenarios, the speed can still be obtained from the
data_rate_oper field in PTYS register. Since data_rate_oper
provides only speed information and lacks lane details, it is
incorrect to derive the number of lanes from it.

This patch corrects the behavior by setting the number of lanes to
UNKNOWN instead of incorrectly using MAX_LANES when relying on
data_rate_oper.

Fixes: 7e959797f021 ("net/mlx5e: Enable lanes configuration when auto-negotiation is off")
Signed-off-by: Shahar Shitrit 
Reviewed-by: Tariq Toukan 
Signed-off-by: Mark Bloch 
Link: https://patch.msgid.link/20250610151514.1094735-10-mbloch@nvidia.com
Signed-off-by: Jakub Kicinski

net/mlx5e: Fix leak of Geneve TLV option object

2025-06-11T21:41:15+00:00

Previously, a unique tunnel id was added for the matching on TC
non-zero chains, to support inner header rewrite with goto action.
Later, it was used to support VF tunnel offload for vxlan, then for
Geneve and GRE. To support VF tunnel, a temporary mlx5_flow_spec is
used to parse tunnel options. For Geneve, if there is TLV option, a
object is created, or refcnt is added if already exists. But the
temporary mlx5_flow_spec is directly freed after parsing, which causes
the leak because no information regarding the object is saved in
flow's mlx5_flow_spec, which is used to free the object when deleting
the flow.

To fix the leak, call mlx5_geneve_tlv_option_del() before free the
temporary spec if it has TLV object.

Fixes: 521933cdc4aa ("net/mlx5e: Support Geneve and GRE with VF tunnel offload")
Signed-off-by: Jianbo Liu 
Reviewed-by: Tariq Toukan 
Reviewed-by: Alex Lazar 
Signed-off-by: Mark Bloch 
Link: https://patch.msgid.link/20250610151514.1094735-9-mbloch@nvidia.com
Signed-off-by: Jakub Kicinski

net/mlx5: HWS, make sure the uplink is the last destination

2025-06-11T21:41:09+00:00

When there are more than one destinations, we create a FW flow
table and provide it with all the destinations. FW requires to
have wire as the last destination in the list (if it exists),
otherwise the operation fails with FW syndrome.

This patch fixes the destination array action creation: if it
contains a wire destination, it is moved to the end.

Fixes: 504e536d9010 ("net/mlx5: HWS, added actions handling")
Signed-off-by: Vlad Dogaru 
Reviewed-by: Yevgeny Kliteynik 
Signed-off-by: Mark Bloch 
Link: https://patch.msgid.link/20250610151514.1094735-7-mbloch@nvidia.com
Signed-off-by: Jakub Kicinski

net/mlx5: HWS, fix missing ip_version handling in definer

2025-06-11T21:41:09+00:00

Fix missing field handling in definer - outer IP version.

Fixes: 74a778b4a63f ("net/mlx5: HWS, added definers handling")
Signed-off-by: Yevgeny Kliteynik 
Signed-off-by: Mark Bloch 
Link: https://patch.msgid.link/20250610151514.1094735-6-mbloch@nvidia.com
Signed-off-by: Jakub Kicinski