kernel/linux.git/drivers/net/ethernet/mediatek, branch v7.0.10

net: ethernet: mtk_eth_soc: initialize PPE per-tag-layer MTU registers

2026-05-23T11:08:40+00:00

[ Upstream commit 2dddb34dd0d07b01fa770eca89480a4da4f13153 ] The PPE enforces output frame size limits via per-tag-layer VLAN_MTU registers that the driver never initializes. The hardware defaults do not account for PPPoE overhead, causing the PPE to punt encapsulated frames back to the CPU instead of forwarding them. Initialize the registers at PPE start and on MTU changes using the maximum GMAC MTU. This is a conservative approximation -- the actual per-PPE requirement depends on egress path, but using the global maximum ensures the limits are never too small. Fixes: ba37b7caf1ed2 ("net: ethernet: mtk_eth_soc: add support for initializing the PPE") Signed-off-by: Daniel Golle Link: https://patch.msgid.link/ec995ab8ce8be423267a1cc093147a74d2eb9d82.1775789829.git.daniel@makrotopia.org Signed-off-by: Jakub Kicinski Signed-off-by: Sasha Levin

net: ethernet: mtk_ppe: avoid NULL deref when gmac0 is disabled

2026-03-27T02:01:25+00:00

If the gmac0 is disabled, the precheck for a valid ingress device will cause a NULL pointer deref and crash the system. This happens because eth->netdev[0] will be NULL but the code will directly try to access netdev_ops. Instead of just checking for the first net_device, it must be checked if any of the mtk_eth net_devices is matching the netdev_ops of the ingress device. Cc: stable@vger.kernel.org Fixes: 73cfd947dbdb ("net: ethernet: mtk_eth_soc: ppe: prevent ppe update for non-mtk devices") Signed-off-by: Sven Eckelmann (Plasma Cloud) Reviewed-by: Simon Horman Link: https://patch.msgid.link/20260324-wed-crash-gmac0-disabled-v1-1-3bc388aee565@simonwunderlich.de Signed-off-by: Jakub Kicinski

net: ethernet: mtk_eth_soc: Reset prog ptr to old_prog in case of error in mtk_xdp_setup()

2026-03-05T14:39:51+00:00

Reset eBPF program pointer to old_prog and do not decrease its ref-count if mtk_open routine in mtk_xdp_setup() fails. Fixes: 7c26c20da5d42 ("net: ethernet: mtk_eth_soc: add basic XDP support") Suggested-by: Paolo Valerio Signed-off-by: Lorenzo Bianconi Link: https://patch.msgid.link/20260303-mtk-xdp-prog-ptr-fix-v2-1-97b6dbbe240f@kernel.org Signed-off-by: Paolo Abeni

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-22T01:09:51+00:00

This was done entirely with mindless brute force, using git grep -l '\

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21T09:02:28+00:00

This is the result of running the Coccinelle script from scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to avoid scalar types (which need careful case-by-case checking), and instead replace kmalloc-family calls that allocate struct or union object instances: Single allocations: kmalloc(sizeof(TYPE), ...) are replaced with: kmalloc_obj(TYPE, ...) Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...) are replaced with: kmalloc_objs(TYPE, COUNT, ...) Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...) are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...) (where TYPE may also be *VAR) The resulting allocations no longer return "void *", instead returning "TYPE *". Signed-off-by: Kees Cook

net: pcs: pcs-mtk-lynxi: pass SGMIISYS OF node to PCS

2026-01-22T03:46:58+00:00

The Mediatek LynxI PCS is used from the MT7530 DSA driver (where it does not have an OF presence) and from mtk_eth_soc, where it does (Documentation/devicetree/bindings/net/pcs/mediatek,sgmiisys.yaml informs of a combined clock provider + SGMII PCS "SGMIISYS" syscon block). Currently, mtk_eth_soc parses the SGMIISYS OF node for the "mediatek,pnswap" property and sets a bit in the "flags" argument of mtk_pcs_lynxi_create() if set. I'd like to deprecate "mediatek,pnswap" in favour of a property which takes the current phy-mode into consideration. But this is only known at mtk_pcs_lynxi_config() time, and not known at mtk_pcs_lynxi_create(), when the SGMIISYS OF node is parsed. To achieve that, we must pass the OF node of the PCS, if it exists, to mtk_pcs_lynxi_create(), and let the PCS take a reference on it and handle property parsing whenever it wants. Use the fwnode API which is more general than OF (in case we ever need to describe the PCS using some other format). This API should be NULL tolerant, so add no particular tests for the mt7530 case. Signed-off-by: Vladimir Oltean Link: https://patch.msgid.link/20260119091220.1493761-5-vladimir.oltean@nxp.com Signed-off-by: Jakub Kicinski

net: mediatek: convert to use .get_rx_ring_count

2026-01-18T02:10:15+00:00

Use the newly introduced .get_rx_ring_count ethtool ops callback instead of handling ETHTOOL_GRXRINGS directly in .get_rxnfc(). Signed-off-by: Breno Leitao Link: https://patch.msgid.link/20260115-grxring_big_v2-v1-3-b3e1b58bced5@debian.org Signed-off-by: Jakub Kicinski

net: mtk: wed: add dma mask limitation and GFP_DMA32 for device with more than 4GB DRAM

2025-10-12T17:14:55+00:00

Limit tx/rx buffer address to 32-bit address space for board with more than 4GB DRAM. Fixes: 804775dfc2885 ("net: ethernet: mtk_eth_soc: add support for Wireless Ethernet Dispatch (WED)") Fixes: 6757d345dd7db ("net: ethernet: mtk_wed: introduce hw_rro support for MT7988") Tested-by: Daniel Pawlik Tested-by: Matteo Croce Signed-off-by: Rex Lu Co-developed-by: Lorenzo Bianconi Signed-off-by: Lorenzo Bianconi Reviewed-by: Simon Horman Signed-off-by: David S. Miller

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2025-09-04T20:33:00+00:00

Cross-merge networking fixes after downstream PR (net-6.17-rc5). No conflicts. Adjacent changes: include/net/sock.h c51613fa276f ("net: add sk->sk_drop_counters") 5d6b58c932ec ("net: lockless sock_i_ino()") Signed-off-by: Jakub Kicinski

net: ethernet: mtk_eth_soc: fix tx vlan tag for llc packets

2025-09-02T23:27:30+00:00

When sending llc packets with vlan tx offload, the hardware fails to actually add the tag. Deal with this by fixing it up in software. Fixes: 656e705243fd ("net-next: mediatek: add support for MT7623 ethernet") Reported-by: Thibaut VARENE Signed-off-by: Felix Fietkau Reviewed-by: Simon Horman Link: https://patch.msgid.link/20250831182007.51619-1-nbd@nbd.name Signed-off-by: Jakub Kicinski