| From: |
| Lorenzo Bianconi <lorenzo-AT-kernel.org> |
| To: |
| Andrew Lunn <andrew+netdev-AT-lunn.ch>, "David S. Miller" <davem-AT-davemloft.net>, Eric Dumazet <edumazet-AT-google.com>, Jakub Kicinski <kuba-AT-kernel.org>, Paolo Abeni <pabeni-AT-redhat.com>, Lorenzo Bianconi <lorenzo-AT-kernel.org> |
| Subject: |
| [PATCH net-next v7 0/3] airoha: add the capability to configure GDM3/GDM4 as WAN/LAN on demand |
| Date: |
| Wed, 01 Jul 2026 10:09:24 +0200 |
| Message-ID: |
| <20260701-airoha-ethtool-priv_flags-v7-0-b4153bd44428@kernel.org> |
| Cc: |
| Simon Horman <horms-AT-kernel.org>, Alexander Lobakin <aleksander.lobakin-AT-intel.com>, linux-arm-kernel-AT-lists.infradead.org, linux-mediatek-AT-lists.infradead.org, netdev-AT-vger.kernel.org, Madhur Agrawal <madhur.agrawal-AT-airoha.com> |
| Archive-link: |
| Article |
Add the capability to configure GDM3/GDM4 as WAN/LAN on demand when QoS
offload is created or destroyed.
Make dev->qdma an RCU pointer so the TX path can safely dereference it
without holding RTNL.
Introduce airoha_qdma_start() and airoha_qdma_stop() helpers.
---
Changes in v7:
- Fix ETS stats accounting in patch 2/3
- Reset ETS stats accounting in airoha_dev_set_qdma().
- Link to v6: https://lore.kernel.org/r/20260629-airoha-ethtool-priv_fl...
Changes in v6:
- Rebase on top of next-next
- Add patch 1/3: "rename airoha_priv_flags to airoha_dev_flags"
- Drop patch 2/3: "refactor QDMA start/stop into reusable helpers"
- Link to v5: https://lore.kernel.org/r/20260611-airoha-ethtool-priv_fl...
Changes in v5:
- Add patch 1/3: use int instead of atomic_t for qdma users counter
- Protect dev->flags with flow_offload_mutex mutex.
- Introduce AIROHA_PRIV_F_QOS in order to handle better WAN/LAN
switching.
- Link to v4: https://lore.kernel.org/r/20260610-airoha-ethtool-priv_fl...
Changes in v4:
- Move back QDMA TX/RX DMA enable to airoha_dev_open()/airoha_dev_stop().
- Configure GDM3/4 as WAN if GDM2 is not available in ndo_init()
callback.
- Protect qdma pointer in airoha_gdm_dev struct using RCU.
- Rely on rtnl_dereference() to access qdma pointer in the control path.
- Add airoha_qdma_start() and airoha_qdma_stop() utility routines in
patch 1/2
- Link to v3: https://lore.kernel.org/r/20260608-airoha-ethtool-priv_fl...
Changes in v3:
- Do not introduce ethtool private flags support to configure LAN/WAN
for GDM3/4 and rely on tc qdisc offload for it instead.
- Set GDM3/4 ports as LAN by default.
- Move QDMA TX/RX DMA enable from airoha_dev_open() to airoha_probe()
and the corresponding disable from airoha_dev_stop() to airoha_qdma_cleanup().
- Link to v2: https://lore.kernel.org/r/20260607-airoha-ethtool-priv_fl...
Changes in v2:
- Rework airoha_dev_set_wan_flag routine
- Enable GDM_STRIP_CRC_MASK in airoha_disable_gdm2_loopback()
- Do not always reset REG_SRC_PORT_FC_MAP6 in
airoha_disable_gdm2_loopback() but use the same condition used in
airoha_enable_gdm2_loopback().
- Link to v1: https://lore.kernel.org/r/20260606-airoha-ethtool-priv_fl...
---
Lorenzo Bianconi (3):
net: airoha: rename airoha_priv_flags to airoha_dev_flags
net: airoha: fix ETS QoS stats counter underflow and cross-channel corruption
net: airoha: defer GDM3/GDM4 WAN mode and GDM2 loopback to QoS offload
drivers/net/ethernet/airoha/airoha_eth.c | 239 ++++++++++++++++++++++++++----
drivers/net/ethernet/airoha/airoha_eth.h | 26 +++-
drivers/net/ethernet/airoha/airoha_ppe.c | 9 +-
drivers/net/ethernet/airoha/airoha_regs.h | 1 +
4 files changed, 233 insertions(+), 42 deletions(-)
---
base-commit: 1c664ec4b9ea827b609d296921ed5bad8a40a158
change-id: 20260606-airoha-ethtool-priv_flags-b6aa70caa780
Best regards,
--
Lorenzo Bianconi <lorenzo@kernel.org>
