wireguard-linux/drivers/net/ethernet/mediatek/mtk_ppe.c, branch davem/net-next

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

2026-04-12T22:22:58Z

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

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21T09:02:28Z

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: ethernet: mtk_eth_soc: Use ipv6_addr_{cpu_to_be32,be32_to_cpu} helpers

2024-08-16T17:27:48Z

Use ipv6_addr_cpu_to_be32 and ipv6_addr_be32_to_cpu helpers to convert address, rather than open coding the conversion. No functional change intended. Compile tested only. Suggested-by: Andrew Lunn Link: https://lore.kernel.org/netdev/c7684349-535c-45a4-9a74-d47479a50020@lunn.ch/ Reviewed-by: Andrew Lunn Signed-off-by: Simon Horman Link: https://patch.msgid.link/20240813-ipv6_addr-helpers-v2-2-5c974f8cca3e@kernel.org Signed-off-by: Jakub Kicinski

net: ethernet: mtk_eth_soc: Reuse value using READ_ONCE instead of re-rereading it

2024-04-04T13:46:52Z

In mtk_flow_entry_update_l2, the hwe->ib1 is read using READ_ONCE at the beginning of the function, checked, and then re-read from hwe->ib1, may void all guarantees of the checks. Reuse the value that was read by READ_ONCE to ensure the consistency of the ib1 throughout the function. Signed-off-by: linke li Link: https://lore.kernel.org/r/tencent_C699E9540505523424F11A9BD3D21B86840A@qq.com Signed-off-by: Paolo Abeni

net: ethernet: mtk_eth_soc: fix PPE hanging issue

2024-03-15T14:03:45Z

A patch to resolve an issue was found in MediaTek's GPL-licensed SDK: In the mtk_ppe_stop() function, the PPE scan mode is not disabled before disabling the PPE. This can potentially lead to a hang during the process of disabling the PPE. Without this patch, the PPE may experience a hang during the reboot test. Link: https://git01.mediatek.com/plugins/gitiles/openwrt/feeds/mtk-openwrt-feeds/+/b40da332dfe763932a82f9f62a4709457a15dd6c Fixes: ba37b7caf1ed ("net: ethernet: mtk_eth_soc: add support for initializing the PPE") Suggested-by: Bc-bocun Chen Signed-off-by: Daniel Golle Signed-off-by: David S. Miller

net: ethernet: mtk_wed: introduce partial AMSDU offload support for MT7988

2023-09-19T16:27:56Z

Introduce partial AMSDU offload support for MT7988 SoC in order to merge in hw packets belonging to the same AMSDU before passing them to the WLAN nic. Co-developed-by: Lorenzo Bianconi Signed-off-by: Lorenzo Bianconi Signed-off-by: Sujuan Chen Signed-off-by: Paolo Abeni

net: ethernet: mtk_eth_soc: support per-flow accounting on MT7988

2023-08-03T09:28:37Z

NETSYS_V3 uses 64 bits for each counters while older SoCs are using 48/40 bits for each counter. Support reading per-flow byte and package counters on NETSYS_V3. Signed-off-by: Daniel Golle Reviewed-by: Simon Horman Link: https://lore.kernel.org/r/37a0928fa8c1253b197884c68ce1f54239421ac5.1690946442.git.daniel@makrotopia.org Signed-off-by: Paolo Abeni

net: ethernet: mtk_eth_soc: enable nft hw flowtable_offload for MT7988 SoC

2023-07-29T01:47:26Z

Enable hw Packet Process Engine (PPE) for MT7988 SoC. Tested-by: Daniel Golle Signed-off-by: Lorenzo Bianconi Link: https://lore.kernel.org/r/5e86341b0220a49620dadc02d77970de5ded9efc.1690441576.git.lorenzo@kernel.org Signed-off-by: Jakub Kicinski

net: ethernet: mtk_eth_soc: add version in mtk_soc_data

2023-07-27T05:05:10Z

Introduce version field in mtk_soc_data data structure in order to make mtk_eth driver easier to maintain for chipset configuration codebase. Get rid of MTK_NETSYS_V2 bit in chip capabilities. This is a preliminary patch to introduce support for MT7988 SoC. Signed-off-by: Lorenzo Bianconi Signed-off-by: Daniel Golle Link: https://lore.kernel.org/r/e52fae302ca135436e5cdd26d38d87be2da63055.1690246066.git.daniel@makrotopia.org Signed-off-by: Jakub Kicinski

net: mtk_eth_soc: mediatek: fix ppe flow accounting for v1 hardware

2023-04-23T12:25:49Z

Older chips (like MT7622) use a different bit in ib2 to enable hardware counter support. Add macros for both and select the appropriate bit. Fixes: 3fbe4d8c0e53 ("net: ethernet: mtk_eth_soc: ppe: add support for flow accounting") Signed-off-by: Felix Fietkau Signed-off-by: Daniel Golle Signed-off-by: David S. Miller