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2026-03-24wifi: mt76: mt792x: add MT7902 WFDMA prefetch configurationSean Wang1-0/+16
Configure the RX/TX ring prefetch setting for MT7902 PCIe device. This is a prerequisite patch before enabling MT7902 PCIe support. Co-developed-by: Xiong Huang <xiong.huang@mediatek.com> Signed-off-by: Xiong Huang <xiong.huang@mediatek.com> Signed-off-by: Sean Wang <sean.wang@mediatek.com> Link: https://patch.msgid.link/20260219004007.19733-9-sean.wang@kernel.org Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24wifi: mt76: mt7921: add MT7902 MCU supportSean Wang3-2/+16
Add MCU support for the MT7902 chipset. runtime pm is not yet supported by the driver, but normal mac80211 operation is unaffected. Signed-off-by: Sean Wang <sean.wang@mediatek.com> Link: https://patch.msgid.link/20260219004007.19733-8-sean.wang@kernel.org Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24wifi: mt76: mt792x: ensure MCU ready before ROM patch downloadSean Wang1-0/+7
Restart the MCU and poll FW state to ensure correct MCU status before downloading the ROM patch. This is a prerequisite for enabling MT7902 PCIe and has been validated on MT7921 and MT7925 since they share the common code path. Signed-off-by: Sean Wang <sean.wang@mediatek.com> Link: https://patch.msgid.link/20260219004007.19733-7-sean.wang@kernel.org Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24wifi: mt76: mt792x: add PSE handling barrier for the large MCU cmdSean Wang2-0/+6
Add a dummy register read in mt76_connac_mcu_rate_txpower_band() to act as a PSE barrier. This would release PSE pages and prevents buffer underflow issues when handling MCU commands with larger payloads without the response in mt76_connac_mcu_set_rate_txpower(). This is a prerequisite patch before enabling MT7902 PCIe and SDIO support. Co-developed-by: Xiong Huang <xiong.huang@mediatek.com> Signed-off-by: Xiong Huang <xiong.huang@mediatek.com> Signed-off-by: Sean Wang <sean.wang@mediatek.com> Link: https://patch.msgid.link/20260219004007.19733-6-sean.wang@kernel.org Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24wifi: mt76: connac: mark MT7902 as hw txp devicesSean Wang1-0/+1
Add MT7902 to is_mt76_fw_txp() so it follows the legacy TX descriptor path like the other connac2 chips that return false. This is a prerequisite patch before enabling MT7902 pcie support. Co-developed-by: Xiong Huang <xiong.huang@mediatek.com> Signed-off-by: Xiong Huang <xiong.huang@mediatek.com> Signed-off-by: Sean Wang <sean.wang@mediatek.com> Link: https://patch.msgid.link/20260219004007.19733-5-sean.wang@kernel.org Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24wifi: mt76: mt7921: add MT7902e DMA layout supportSean Wang2-9/+46
Add MT7902 PCIe specific DMA layout overrides for MCU TXQ index, RX ring size, and MCU_WA usage. Common layout remains the default for other chips. This is a prerequisite patch before enabling MT7902 PCIe support. Co-developed-by: Xiong Huang <xiong.huang@mediatek.com> Signed-off-by: Xiong Huang <xiong.huang@mediatek.com> Signed-off-by: Sean Wang <sean.wang@mediatek.com> Link: https://patch.msgid.link/20260219004007.19733-4-sean.wang@kernel.org Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24wifi: mt76: mt7921: handle MT7902 irq_map quirk with mutable copySean Wang1-0/+14
MT7902 PCIe requires a different wm2_complete_mask value, so introduce a mutable per-device copy of the default irq_map and override the field only for this chip. Other devices continue using the shared const template. This is a prerequisite patch before enabling MT7902 PCIe support. Co-developed-by: Xiong Huang <xiong.huang@mediatek.com> Signed-off-by: Xiong Huang <xiong.huang@mediatek.com> Signed-off-by: Sean Wang <sean.wang@mediatek.com> Link: https://patch.msgid.link/20260219004007.19733-3-sean.wang@kernel.org Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24wifi: mt76: mt7921: use mt76_for_each_q_rx() in reset pathSean Wang1-3/+3
Replace explicit napi_disable() calls for RX queues with mt76_for_each_q_rx() in mt7921e_mac_reset(). This removes hardcoded queue indices and disables all configured RX queues during reset. Signed-off-by: Sean Wang <sean.wang@mediatek.com> Link: https://patch.msgid.link/20260219004007.19733-2-sean.wang@kernel.org Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24wifi: mt76: connac: use is_connac2() to replace is_mt7921() checksSean Wang6-25/+25
Unify all per-chip conditionals under the new is_connac2() helper. This avoids confusion caused by the previous is_mt7921() check, which implicitly covered multiple connac2 chipsets and no longer reflected its actual scope. This is a clean-up only change with no functional impact. Signed-off-by: Sean Wang <sean.wang@mediatek.com> Link: https://patch.msgid.link/20260219004007.19733-1-sean.wang@kernel.org Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24wifi: mt76: mt7996: apply calibration-free data from OTPStanleyYP Wang2-19/+158
Before sending the current EEPROM data to the firmware, read the calibration-free data (FT data) from the efuse and merge it with the existing EEPROM data. Co-developed-by: Shayne Chen <shayne.chen@mediatek.com> Signed-off-by: Shayne Chen <shayne.chen@mediatek.com> Signed-off-by: StanleyYP Wang <StanleyYP.Wang@mediatek.com> Link: https://patch.msgid.link/20260212090310.3335392-3-shayne.chen@mediatek.com Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24wifi: mt76: mt7996: add variant for MT7992 chipsetsShayne Chen4-2/+15
Introduce VAR_TYPE_24 for the MT7992 chipsets, a dual-band variant supporting 3T3R/2SS on the 2 GHz band and 5T5R/4SS on the 5GHz band. Signed-off-by: Shayne Chen <shayne.chen@mediatek.com> Link: https://patch.msgid.link/20260212090310.3335392-2-shayne.chen@mediatek.com Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24wifi: mt76: add external EEPROM support for mt799x chipsetsStanleyYP Wang6-61/+148
For the MT7992 and MT7990 chipsets, efuse mode is not supported because there is insufficient space in the efuse to store the calibration data. Therefore, an additional on-chip EEPROM is added to address this limitation. Co-developed-by: Elwin Huang <s09289728096@gmail.com> Signed-off-by: Elwin Huang <s09289728096@gmail.com> Co-developed-by: Shayne Chen <shayne.chen@mediatek.com> Signed-off-by: Shayne Chen <shayne.chen@mediatek.com> Signed-off-by: StanleyYP Wang <StanleyYP.Wang@mediatek.com> Link: https://patch.msgid.link/20260212090310.3335392-1-shayne.chen@mediatek.com Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24wifi: b43: kzalloc + kcalloc to kzalloc_flexRosen Penev2-12/+10
Simplifies allocation and allows using __counted_by for extra runtime analysis. Signed-off-by: Rosen Penev <rosenp@gmail.com> Link: https://patch.msgid.link/20260311004736.32730-1-rosenp@gmail.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2026-03-24wifi: mac80211_hwsim: advertise basic UHR supportJohannes Berg1-0/+35
Just add support for ELR, and nothing else since the spec isn't really all that well-specified yet. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com> Link: https://patch.msgid.link/20260320101624.77af6463920e.I257e525a461c350bed87cfaefc52de25e37afcfb@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2026-03-24Merge tag 'ath-next-20260324' of ↵Johannes Berg12-135/+180
git://git.kernel.org/pub/scm/linux/kernel/git/ath/ath Jeff Johnson says: ================== ath.git patches for v7.1 (PR #2) A few small cleanups and bug fixes across ath drivers. ================== Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2026-03-24wifi: iwlwifi: mvm: fix potential out-of-bounds read in ↵Alexey Velichayshiy1-1/+1
iwl_mvm_nd_match_info_handler() The memcpy function assumes the dynamic array notif->matches is at least as large as the number of bytes to copy. Otherwise, results->matches may contain unwanted data. To guarantee safety, extend the validation in one of the checks to ensure sufficient packet length. Found by Linux Verification Center (linuxtesting.org) with SVACE. Cc: stable@vger.kernel.org Fixes: 5ac54afd4d97 ("wifi: iwlwifi: mvm: Add handling for scan offload match info notification") Signed-off-by: Alexey Velichayshiy <a.velichayshiy@ispras.ru> Link: https://patch.msgid.link/20260207150335.1013646-1-a.velichayshiy@ispras.ru Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2026-03-24Merge tag 'ath-current-20260324' of ↵Johannes Berg2-9/+10
git://git.kernel.org/pub/scm/linux/kernel/git/ath/ath Jeff Johnson says: ================== ath.git update for v7.0-rc6 For both ath11k and ath12k use the correct TID when stopping an AMPDU session. ================== Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2026-03-24Merge tag 'iwlwifi-fixes-2026-03-24' of ↵Johannes Berg10-41/+146
https://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/iwlwifi-next Miri Korenblit says: ==================== wifi: iwlwifi: fixes - 2026-03-24 - Fix MLO scan timing (record the scan start in FW) - don't send a 6E related command when not supported - correctly set wifi generation data ==================== Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2026-03-24wifi: wl1251: validate packet IDs before indexing tx_framesPengpeng Hou1-3/+5
wl1251_tx_packet_cb() uses the firmware completion ID directly to index the fixed 16-entry wl->tx_frames[] array. The ID is a raw u8 from the completion block, and the callback does not currently verify that it fits the array before dereferencing it. Reject completion IDs that fall outside wl->tx_frames[] and keep the existing NULL check in the same guard. This keeps the fix local to the trust boundary and avoids touching the rest of the completion flow. Signed-off-by: Pengpeng Hou <pengpeng@iscas.ac.cn> Link: https://patch.msgid.link/20260323080845.40033-1-pengpeng@iscas.ac.cn Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2026-03-24wifi: wilc1000: fix u8 overflow in SSID scan buffer size calculationYasuaki Torimaru1-1/+1
The variable valuesize is declared as u8 but accumulates the total length of all SSIDs to scan. Each SSID contributes up to 33 bytes (IEEE80211_MAX_SSID_LEN + 1), and with WILC_MAX_NUM_PROBED_SSID (10) SSIDs the total can reach 330, which wraps around to 74 when stored in a u8. This causes kmalloc to allocate only 75 bytes while the subsequent memcpy writes up to 331 bytes into the buffer, resulting in a 256-byte heap buffer overflow. Widen valuesize from u8 to u32 to accommodate the full range. Fixes: c5c77ba18ea6 ("staging: wilc1000: Add SDIO/SPI 802.11 driver") Cc: stable@vger.kernel.org Signed-off-by: Yasuaki Torimaru <yasuakitorimaru@gmail.com> Link: https://patch.msgid.link/20260324100624.983458-1-yasuakitorimaru@gmail.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2026-03-24wifi: ath12k: Pass the correct value of each TID during a stop AMPDU sessionReshma Immaculate Rajkumar1-1/+3
With traffic ongoing for data TID [TID 0], an DELBA request to stop AMPDU for the BA session was received on management TID [TID 4]. The corresponding TID number was incorrectly passed to stop the BA session, resulting in the BA session for data TIDs being stopped and the BA size being reduced to 1, causing an overall dip in TCP throughput. Fix this issue by passing the correct argument from ath12k_dp_rx_ampdu_stop() to ath12k_dp_arch_peer_rx_tid_reo_update() during an AMPDU stop session. Instead of passing peer->dp_peer->rx_tid, which is the base address of the array, corresponding to TID 0, pass the value of &peer->dp_peer->rx_tid[params->tid]. With this, the different TID numbers are accounted for. Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.5-01651-QCAHKSWPL_SILICONZ-1 Fixes: d889913205cf ("wifi: ath12k: driver for Qualcomm Wi-Fi 7 devices") Signed-off-by: Reshma Immaculate Rajkumar <reshma.rajkumar@oss.qualcomm.com> Reviewed-by: Baochen Qiang <baochen.qiang@oss.qualcomm.com> Reviewed-by: Vasanthakumar Thiagarajan <vasanthakumar.thiagarajan@oss.qualcomm.com> Link: https://patch.msgid.link/20260227110123.3726354-1-reshma.rajkumar@oss.qualcomm.com Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>
2026-03-24wifi: ath11k: Pass the correct value of each TID during a stop AMPDU sessionReshma Immaculate Rajkumar1-8/+7
During ongoing traffic, a request to stop an AMPDU session for one TID could incorrectly affect other active sessions. This can happen because an incorrect TID reference would be passed when updating the BA session state, causing the wrong session to be stopped. As a result, the affected session would be reduced to a minimal BA size, leading to a noticeable throughput degradation. Fix this issue by passing the correct argument from ath11k_dp_rx_ampdu_stop() to ath11k_peer_rx_tid_reo_update() during a stop AMPDU session. Instead of passing peer->tx_tid, which is the base address of the array, corresponding to TID 0; pass the value of &peer->rx_tid[params->tid], where the different TID numbers are accounted for. Tested-on: QCN9074 hw1.0 PCI WLAN.HK.2.9.0.1-02146-QCAHKSWPL_SILICONZ-1 Fixes: d5c65159f2895 ("ath11k: driver for Qualcomm IEEE 802.11ax devices") Signed-off-by: Reshma Immaculate Rajkumar <reshma.rajkumar@oss.qualcomm.com> Reviewed-by: Baochen Qiang <baochen.qiang@oss.qualcomm.com> Reviewed-by: Vasanthakumar Thiagarajan <vasanthakumar.thiagarajan@oss.qualcomm.com> Link: https://patch.msgid.link/20260319065608.2408179-1-reshma.rajkumar@oss.qualcomm.com Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>
2026-03-24net: airoha: Rework the code flow in airoha_remove() and in airoha_probe() ↵Lorenzo Bianconi1-32/+44
error path As suggested by Simon in [0], rework the code flow in airoha_remove() and in the airoha_probe() error path in order to rely on a more common approach un-registering configured net-devices first and destroying the hw resources at the end of the code. Introduce airoha_qdma_cleanup routine to release QDMA resources. [0] https://lore.kernel.org/netdev/20251214-airoha-fix-dev-registration-v1-1-860e027ad4c6@kernel.org/ Suggested-by: Simon Horman <horms@kernel.org> Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://patch.msgid.link/20260321-airoha-remove-rework-v2-1-16c7bade5fe5@kernel.org Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-03-24net: macb: Use dev_consume_skb_any() to free TX SKBsKevin Hao1-1/+1
The napi_consume_skb() function is not intended to be called in an IRQ disabled context. However, after commit 6bc8a5098bf4 ("net: macb: Fix tx_ptr_lock locking"), the freeing of TX SKBs is performed with IRQs disabled. To resolve the following call trace, use dev_consume_skb_any() for freeing TX SKBs: WARNING: kernel/softirq.c:430 at __local_bh_enable_ip+0x174/0x188, CPU#0: ksoftirqd/0/15 Modules linked in: CPU: 0 UID: 0 PID: 15 Comm: ksoftirqd/0 Not tainted 7.0.0-rc4-next-20260319-yocto-standard-dirty #37 PREEMPT Hardware name: ZynqMP ZCU102 Rev1.1 (DT) pstate: 200000c5 (nzCv daIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __local_bh_enable_ip+0x174/0x188 lr : local_bh_enable+0x24/0x38 sp : ffff800082b3bb10 x29: ffff800082b3bb10 x28: ffff0008031f3c00 x27: 000000000011ede0 x26: ffff000800a7ff00 x25: ffff800083937ce8 x24: 0000000000017a80 x23: ffff000803243a78 x22: 0000000000000040 x21: 0000000000000000 x20: ffff000800394c80 x19: 0000000000000200 x18: 0000000000000001 x17: 0000000000000001 x16: ffff000803240000 x15: 0000000000000000 x14: ffffffffffffffff x13: 0000000000000028 x12: ffff000800395650 x11: ffff8000821d1528 x10: ffff800081c2bc08 x9 : ffff800081c1e258 x8 : 0000000100000301 x7 : ffff8000810426ec x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000008 x1 : 0000000000000200 x0 : ffff8000810428dc Call trace: __local_bh_enable_ip+0x174/0x188 (P) local_bh_enable+0x24/0x38 skb_attempt_defer_free+0x190/0x1d8 napi_consume_skb+0x58/0x108 macb_tx_poll+0x1a4/0x558 __napi_poll+0x50/0x198 net_rx_action+0x1f4/0x3d8 handle_softirqs+0x16c/0x560 run_ksoftirqd+0x44/0x80 smpboot_thread_fn+0x1d8/0x338 kthread+0x120/0x150 ret_from_fork+0x10/0x20 irq event stamp: 29751 hardirqs last enabled at (29750): [<ffff8000813be184>] _raw_spin_unlock_irqrestore+0x44/0x88 hardirqs last disabled at (29751): [<ffff8000813bdf60>] _raw_spin_lock_irqsave+0x38/0x98 softirqs last enabled at (29150): [<ffff8000800f1aec>] handle_softirqs+0x504/0x560 softirqs last disabled at (29153): [<ffff8000800f2fec>] run_ksoftirqd+0x44/0x80 Fixes: 6bc8a5098bf4 ("net: macb: Fix tx_ptr_lock locking") Signed-off-by: Kevin Hao <haokexin@gmail.com> Cc: stable@vger.kernel.org Reviewed-by: Simon Horman <horms@kernel.org> Link: https://patch.msgid.link/20260321-macb-tx-v1-1-b383a58dd4e6@gmail.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-03-24net: phy: update outdated comment for removed phy_package_read/write()Kexin Sun1-2/+2
The locked convenience functions phy_package_read() and phy_package_write() were removed (as they had no users) by commit e7f984e925d2 ("net: phy: move PHY package related code from phy.h to phy_package.c"). Update the comment to reference the existing unlocked counterparts __phy_package_read() and __phy_package_write(). Assisted-by: unnamed:deepseek-v3.2 coccinelle Signed-off-by: Kexin Sun <kexinsun@smail.nju.edu.cn> Link: https://patch.msgid.link/20260321105825.7221-1-kexinsun@smail.nju.edu.cn Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-03-24wifi: iwlwifi: mld: correctly set wifi generation dataJohannes Berg2-32/+88
In each MAC context, the firmware expects the wifi generation data, i.e. whether or not HE/EHT (and in the future UHR) is enabled on that MAC. However, this is currently handled wrong in two ways: - EHT is only enabled when the interface is also an MLD, but we currently allow (despite the spec) connecting with EHT but without MLO. - when HE or EHT are used by TDLS peers, the firmware needs to have them enabled regardless of the AP Fix this by iterating setting up the data depending on the interface type: - for AP, just set it according to the BSS configuration - for monitor, set it according to HW capabilities - otherwise, particularly for client, iterate all stations and then their links on the interface in question and set according to their capabilities, this handles the AP and TDLS peers. Re-calculate this whenever a TDLS station is marked associated or removed so that it's kept updated, for the AP it's already updated on assoc/disassoc. Fixes: d1e879ec600f ("wifi: iwlwifi: add iwlmld sub-driver") Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com> Link: https://patch.msgid.link/20260319110722.404713b22177.Ic972b5e557d011a5438f8f97c1e793cc829e2ea9@changeid Link: https://patch.msgid.link/20260324093333.2953495-1-miriam.rachel.korenblit@intel.com
2026-03-24wifi: iwlwifi: mvm: don't send a 6E related command when not supportedEmmanuel Grumbach1-1/+2
MCC_ALLOWED_AP_TYPE_CMD is related to 6E support. Do not send it if the device doesn't support 6E. Apparently, the firmware is mistakenly advertising support for this command even on AX201 which does not support 6E and then the firmware crashes. Fixes: 0d2fc8821a7d ("wifi: iwlwifi: nvm: parse the VLP/AFC bit from regulatory") Closes: https://bugzilla.kernel.org/show_bug.cgi?id=220804 Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Reviewed-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com> Link: https://patch.msgid.link/20260324113316.e171f0163f2a.I0c444d1f82d1773054e7ffc391ad49697d58f44e@changeid
2026-03-24wifi: iwlwifi: mld: Fix MLO scan timingPagadala Yesu Anjaneyulu7-8/+56
Calculate MLO scan start time based on actual scan start notification from firmware instead of recording time when scan command is sent. Currently, MLO scan start time was captured immediately after sending the scan command to firmware. However, the actual scan start time may differ due to the FW being busy with a previous scan. In that case, the link selection code will think that the MLO scan is too old, and will warn. To fix it, Implement start scan notification handling to capture the precise moment when firmware begins the scan operation. Fixes: 9324731b9985 ("wifi: iwlwifi: mld: avoid selecting bad links") Signed-off-by: Pagadala Yesu Anjaneyulu <pagadala.yesu.anjaneyulu@intel.com> Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com> Link: https://patch.msgid.link/20260324113316.4c56b8bac533.I6e656d8cc30bb82c96aabadedd62bd67f4c46bf9@changeid
2026-03-24Merge tag 'linux-can-fixes-for-7.0-20260323' of ↵Paolo Abeni2-6/+27
git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can Marc Kleine-Budde says: ==================== pull-request: can 2026-03-23 this is a pull request of 5 patches for net/main. The first patch is by me and adds missing error handling to the CAN netlink device configuration code. Wenyuan Li contributes a patch for the mcp251x drier to add missing error handling for power enabling in th open and resume functions. Oliver Hartkopp's patch adds missing atomic access in hot path for the CAN procfs statistics. A series by Ali Norouzi and Oliver Hartkopp fix a can-Out-of-Bounds Heap R/W in the can-gw protocol and a UAF in the CAN isotp protocol. linux-can-fixes-for-7.0-20260323 * tag 'linux-can-fixes-for-7.0-20260323' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can: can: isotp: fix tx.buf use-after-free in isotp_sendmsg() can: gw: fix OOB heap access in cgw_csum_crc8_rel() can: statistics: add missing atomic access in hot path can: mcp251x: add error handling for power enable in open and resume can: netlink: can_changelink(): add missing error handling to call can_ctrlmode_changelink() ==================== Link: https://patch.msgid.link/20260323103224.218099-1-mkl@pengutronix.de Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-03-24net: ti: icssg-prueth: fix use-after-free of CPPI descriptor in RX pathDavid Carlier1-2/+2
cppi5_hdesc_get_psdata() returns a pointer into the CPPI descriptor. In both emac_rx_packet() and emac_rx_packet_zc(), the descriptor is freed via k3_cppi_desc_pool_free() before the psdata pointer is used by emac_rx_timestamp(), which dereferences psdata[0] and psdata[1]. This constitutes a use-after-free on every received packet that goes through the timestamp path. Defer the descriptor free until after all accesses through the psdata pointer are complete. For emac_rx_packet(), move the free into the requeue label so both early-exit and success paths free the descriptor after all accesses are done. For emac_rx_packet_zc(), move the free to the end of the loop body after emac_dispatch_skb_zc() (which calls emac_rx_timestamp()) has returned. Fixes: 46eeb90f03e0 ("net: ti: icssg-prueth: Use page_pool API for RX buffer allocation") Signed-off-by: David Carlier <devnexen@gmail.com> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://patch.msgid.link/20260320174439.41080-1-devnexen@gmail.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-03-24net: stmmac: elminate tbs_desc in stmmac_xmit()Russell King (Oracle)1-3/+2
There is no need to have a local variable for tbs_desc, we can do the conversion when calling stmmac_set_desc_tbs(). Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> Link: https://patch.msgid.link/E1w3d0b-0000000DfMD-2hrD@rmk-PC.armlinux.org.uk Tested-by: Maxime Chevallier <maxime.chevallier@bootlin.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-03-24net: stmmac: use first_desc for TBSRussell King (Oracle)1-1/+6
Rather than freshly getting a pointer for the TBS descriptor (because we want to access its enhanced fields) convert the existing first_desc basic descriptor to a pointer to the enhanced descriptor. Add a comment explaining why it is safe to convert from the basic descriptor pointer to the enhanced descriptor pointer. Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> Link: https://patch.msgid.link/E1w3d0W-0000000DfM7-2BMA@rmk-PC.armlinux.org.uk Tested-by: Maxime Chevallier <maxime.chevallier@bootlin.com> [pabeni@redhat.com: fixed comment typo] Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-03-24net: stmmac: move stmmac_xmit() initial variable initRussell King (Oracle)1-4/+4
Move tx_q, first_tx and txq_stats just before their first use. Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> Link: https://patch.msgid.link/E1w3d0R-0000000DfM1-1itN@rmk-PC.armlinux.org.uk Tested-by: Maxime Chevallier <maxime.chevallier@bootlin.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-03-24net: stmmac: move stmmac_xmit() first entry index codeRussell King (Oracle)1-4/+4
The handling of the first descriptor index/pointer is split around the checksum handling which makes no sense. Group this code together. Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> Link: https://patch.msgid.link/E1w3d0M-0000000DfLv-1C6S@rmk-PC.armlinux.org.uk Tested-by: Maxime Chevallier <maxime.chevallier@bootlin.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-03-24net: stmmac: move first xmit descriptor SARC and TBS configRussell King (Oracle)1-10/+10
Move the first transmit descriptor's SARC and TBS configuration alongside the code which populates the first descriptor, which helps to keep all the code specific to that descriptor together. Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> Link: https://patch.msgid.link/E1w3d0H-0000000DfLp-0gIx@rmk-PC.armlinux.org.uk Tested-by: Maxime Chevallier <maxime.chevallier@bootlin.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-03-24net: stmmac: move stmmac_xmit() skb head handlingRussell King (Oracle)1-33/+30
The skb head buffer handling is delayed in stmmac_xmit() until after the skb fragments have been populated into the descriptors. The reason is this code used to set the OWN bit on the first descriptor, which then allows the TX DMA to process the first and subsequent descriptors. However, as of commit 579a25a854d4 ("net: stmmac: Initial support for TBS") this is now separated, but the comments weren't updated. Move the code populating the first descriptor along side the jumbo code which also populates the first descriptor. This gives a consistent location where we populate the descriptor(s) for the SKB head. Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> Link: https://patch.msgid.link/E1w3d0C-0000000DfLj-0BLb@rmk-PC.armlinux.org.uk Tested-by: Maxime Chevallier <maxime.chevallier@bootlin.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-03-24team: fix header_ops type confusion with non-Ethernet portsJiayuan Chen1-1/+64
Similar to commit 950803f72547 ("bonding: fix type confusion in bond_setup_by_slave()") team has the same class of header_ops type confusion. For non-Ethernet ports, team_setup_by_port() copies port_dev->header_ops directly. When the team device later calls dev_hard_header() or dev_parse_header(), these callbacks can run with the team net_device instead of the real lower device, so netdev_priv(dev) is interpreted as the wrong private type and can crash. The syzbot report shows a crash in bond_header_create(), but the root cause is in team: the topology is gre -> bond -> team, and team calls the inherited header_ops with its own net_device instead of the lower device, so bond_header_create() receives a team device and interprets netdev_priv() as bonding private data, causing a type confusion crash. Fix this by introducing team header_ops wrappers for create/parse, selecting a team port under RCU, and calling the lower device callbacks with port->dev, so each callback always sees the correct net_device context. Also pass the selected lower device to the lower parse callback, so recursion is bounded in stacked non-Ethernet topologies and parse callbacks always run with the correct device context. Fixes: 1d76efe1577b ("team: add support for non-ethernet devices") Reported-by: syzbot+3d8bc31c45e11450f24c@syzkaller.appspotmail.com Closes: https://lore.kernel.org/all/69b46af7.050a0220.36eb34.000e.GAE@google.com/T/ Cc: Jiayuan Chen <jiayuan.chen@linux.dev> Signed-off-by: Jiayuan Chen <jiayuan.chen@shopee.com> Link: https://patch.msgid.link/20260320072139.134249-2-jiayuan.chen@linux.dev Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-03-24virtio-net: correct hdr_len handling for VIRTIO_NET_F_GUEST_HDRLENXuan Zhuo2-2/+6
The commit be50da3e9d4a ("net: virtio_net: implement exact header length guest feature") introduces support for the VIRTIO_NET_F_GUEST_HDRLEN feature in virtio-net. This feature requires virtio-net to set hdr_len to the actual header length of the packet when transmitting, the number of bytes from the start of the packet to the beginning of the transport-layer payload. However, in practice, hdr_len was being set using skb_headlen(skb), which is clearly incorrect. This commit fixes that issue. Fixes: be50da3e9d4a ("net: virtio_net: implement exact header length guest feature") Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com> Link: https://patch.msgid.link/20260320021818.111741-2-xuanzhuo@linux.alibaba.com Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-03-24octeontx2-af: simplify rvu_debugfsYury Norov1-23/+5
The driver uses bitmap_print_to_pagebuf() to store human-readable bitmaps representations in a temporary buffers; and then feed seq_printf() with it. Switch to using seq_printf("%*pb") directly and drop intermediate buffer. Signed-off-by: Yury Norov <ynorov@nvidia.com> Link: https://patch.msgid.link/20260319201713.941956-2-ynorov@nvidia.com Reviewed-by: Simon Horman <horms@kernel.org> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-03-24amd-xgbe: add TX descriptor cleanup for link-downRaju Rangoju3-16/+108
Add intelligent TX descriptor cleanup mechanism to reclaim abandoned descriptors when the physical link goes down. When the link goes down while TX packets are in-flight, the hardware stops processing descriptors with the OWN bit still set. The current driver waits indefinitely for these descriptors to complete, which never happens. This causes: - TX ring exhaustion (no descriptors available for new packets) - Memory leaks (skbs never freed) - DMA mapping leaks (mappings never unmapped) - Network stack backpressure buildup Add force-cleanup mechanism in xgbe_tx_poll() that detects link-down state and reclaims abandoned descriptors. The helper functions and DMA optimizations support efficient TX shutdown: - xgbe_wait_for_dma_tx_complete(): Wait for DMA completion with link-down optimization - Restructure xgbe_disable_tx() for proper shutdown sequence Implementation: 1. Check link state at the start of tx_poll 2. If link is down, set force_cleanup flag 3. For descriptors that hardware hasn't completed (!tx_complete): - If force_cleanup: treat as completed and reclaim resources - If link up: break and wait for hardware (normal behavior) The cleanup process: - Frees skbs that will never be transmitted - Unmaps DMA mappings - Resets descriptors for reuse - Does NOT count as successful transmission (correct statistics) Benefits: - Prevents TX ring starvation - Eliminates memory and DMA mapping leaks - Enables fast link recovery when link comes back up - Critical for link aggregation failover scenarios Signed-off-by: Raju Rangoju <Raju.Rangoju@amd.com> Link: https://patch.msgid.link/20260319163251.1808611-4-Raju.Rangoju@amd.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-03-24amd-xgbe: optimize TX shutdown on link-downRaju Rangoju2-0/+27
Optimize the TX shutdown sequence when link goes down by skipping futile hardware wait operations and immediately stopping TX queues. Current behavior creates delays and resource issues during link-down: 1. xgbe_txq_prepare_tx_stop() waits up to XGBE_DMA_STOP_TIMEOUT for TX queues to drain, but when link is down, hardware will never complete the pending descriptors. This causes unnecessary delays during interface shutdown. 2. TX queues remain active after link-down, allowing the network stack to continue queuing packets that cannot be transmitted. This leads to resource buildup and complicates recovery. This patch adds two optimizations: Optimization 1: Skip TX queue drain when link is down In xgbe_txq_prepare_tx_stop(), detect link-down state and return immediately instead of waiting for hardware. Abandoned descriptors will be cleaned up by the force-cleanup mechanism (next patch). Optimization 2: Immediate TX queue stop on link-down In xgbe_phy_adjust_link(), call netif_tx_stop_all_queues() as soon as link-down is detected. Also wake TX queues on link-up to resume transmission. Benefits: - Faster interface shutdown (no pointless timeout waits) - Prevents packet queue buildup in network stack - Cleaner state management during link transitions - Enables orderly descriptor cleanup by NAPI poll Note: We do not call netdev_tx_reset_queue() on link-down because NAPI poll may still be running, which would trigger BQL assertions. BQL state is cleaned up naturally during descriptor reclamation. Signed-off-by: Raju Rangoju <Raju.Rangoju@amd.com> Link: https://patch.msgid.link/20260319163251.1808611-3-Raju.Rangoju@amd.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-03-24amd-xgbe: add adaptive link status pollingRaju Rangoju1-1/+23
Implement adaptive link status polling to enable fast link-down detection while conserving CPU resources during link-down periods. Currently, the driver polls link status at a fixed 1-second interval regardless of link state. This creates a trade-off: - Slow polling (1s): Misses rapid link state changes, causing delays - Fast polling: Wastes CPU when link is stable or down This enhancement introduces state-aware polling: When carrier is UP: Poll every 100ms to enable rapid link-down detection. This provides ~100-200ms response time to link failures, minimizing packet loss and enabling fast failover in link aggregation configurations. When carrier is DOWN: Poll every 1s to conserve CPU resources. Link-up detection is less time-critical since no traffic is flowing. Performance impact: - Link-down detection: 1000ms → 100-200ms (10x improvement) - CPU overhead when link up: 0.1% → 1% (acceptable for active links) - CPU overhead when link down: unchanged at 0.1% This is particularly valuable for: - Link aggregation deployments requiring sub-second failover - Environments with flaky links or cable issues - Applications sensitive to connection recovery time Signed-off-by: Raju Rangoju <Raju.Rangoju@amd.com> Link: https://patch.msgid.link/20260319163251.1808611-2-Raju.Rangoju@amd.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-03-23net: enetc: fix the output issue of 'ethtool --show-ring'Wei Fang1-0/+2
Currently, enetc_get_ringparam() only provides rx_pending and tx_pending, but 'ethtool --show-ring' no longer displays these fields. Because the ringparam retrieval path has moved to the new netlink interface, where rings_fill_reply() emits the *x_pending only if the *x_max_pending values are non-zero. So rx_max_pending and tx_max_pending to are added to enetc_get_ringparam() to fix the issue. Note that the maximum tx/rx ring size of hardware is 64K, but we haven't added set_ringparam() to make the ring size configurable. To avoid users mistakenly believing that the ring size can be increased, so set the *x_max_pending to priv->*x_bd_count. Fixes: e4a1717b677c ("ethtool: provide ring sizes with RINGS_GET request") Signed-off-by: Wei Fang <wei.fang@nxp.com> Link: https://patch.msgid.link/20260320094222.706339-1-wei.fang@nxp.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-03-23bnxt_en: Resize RSS contexts on channel count changeBjörn Töpel1-7/+28
bnxt_set_channels() previously rejected channel changes that alter the RSS table size when RSS contexts exist, because non-default context sizes were locked at creation. Replace the rejection with the new resize helpers. RSS table size only changes on P5 chips with older firmware; newer firmware always uses the largest table size. Signed-off-by: Björn Töpel <bjorn@kernel.org> Link: https://patch.msgid.link/20260320085826.1957255-4-bjorn@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-03-23ethtool: Track user-provided RSS indirection table sizeBjörn Töpel2-11/+13
Track the number of indirection table entries the user originally provided (context 0/default as well!). Replace IFF_RXFH_CONFIGURED with rss_indir_user_size: the flag is redundant now that user_size captures the same information. Add ethtool_rxfh_indir_lost() for drivers that must reset the indirection table. Convert bnxt and mlx5 to use it. Signed-off-by: Björn Töpel <bjorn@kernel.org> Link: https://patch.msgid.link/20260320085826.1957255-2-bjorn@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-03-23team: use netdev_from_priv()Qingfang Deng1-35/+42
Use the new netdev_from_priv() helper to access the net device from struct team. Signed-off-by: Qingfang Deng <dqfext@gmail.com> Link: https://patch.msgid.link/20260320075605.490832-2-dqfext@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-03-23net: b44: always select CONFIG_FIXED_PHYArnd Bergmann1-1/+1
When CONFIG_FIXED_PHY=m but CONFIG_B44=y, the kernel fails to link: ld.lld: error: undefined symbol: fixed_phy_unregister >>> referenced by b44.c >>> drivers/net/ethernet/broadcom/b44.o:(b44_remove_one) in archive vmlinux.a ld.lld: error: undefined symbol: fixed_phy_register_100fd >>> referenced by b44.c >>> drivers/net/ethernet/broadcom/b44.o:(b44_register_phy_one) in archive vmlinux.a The fixed phy support is small enough that just always enabling it for b44 is the simplest solution, and it avoids adding ugly #ifdef checks. Fixes: 10d2f15afba2 ("net: b44: register a fixed phy using fixed_phy_register_100fd if needed") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Link: https://patch.msgid.link/20260320154927.674555-1-arnd@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-03-23net: airoha: add RCU lock around dev_fill_forward_pathQingfang Deng1-0/+2
Since 0417adf367a0 ("ppp: fix race conditions in ppp_fill_forward_path") dev_fill_forward_path() should be called with RCU read lock held. This fix was applied to net, while the Airoha flowtable commit was applied to net-next, so it hadn't been an issue until net was merged into net-next. Fixes: a8bdd935d1dd ("net: airoha: Add wlan flowtable TX offload") Signed-off-by: Qingfang Deng <dqfext@gmail.com> Acked-by: Lorenzo Bianconi <lorenzo@kernel.org> Link: https://patch.msgid.link/20260320094315.525126-1-dqfext@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-03-23ieee802154: atusb: drop redundant device referenceJohan Hovold1-4/+1
Driver core holds a reference to the USB interface and its parent USB device while the interface is bound to a driver and there is no need to take additional references unless the structures are needed after disconnect. Drop the redundant device reference to reduce cargo culting, make it easier to spot drivers where an extra reference is needed, and reduce the risk of memory leaks when drivers fail to release it. Signed-off-by: Johan Hovold <johan@kernel.org> Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com> Acked-by: Stefan Schmidt <stefan@datenfreihafen.org> Link: https://patch.msgid.link/20260305104313.15898-1-johan@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-03-23net: stmmac: use integrated PCS for BASE-X modesRussell King (Oracle)2-10/+2
dwmac-qcom-ethqos supports SGMII and 2500BASE-X using the integrated PCS, so we need to expand the PCS support to include support for BASE-X modes. Add support to the prereset configuration to detect 2500BASE-X, and arrange for stmmac_mac_select_pcs() to return the integrated PCS if its supported_interfaces bitmap reports support for the interface mode. This results in priv->hw->pcs now being write-only, so remove it. Reviewed-by: Maxime Chevallier <maxime.chevallier@bootlin.com> Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> Link: https://patch.msgid.link/E1w2tPj-0000000DYAv-2JcZ@rmk-PC.armlinux.org.uk Signed-off-by: Jakub Kicinski <kuba@kernel.org>
generated by cgit (git 2.54.0.dirty) at 2026-10-01 09:01:47 +0000