diff mbox series

[v2] net: ethernet: mtk_eth_soc: fix state in __mtk_foe_entry_clear

Message ID YzY+1Yg0FBXcnrtc@makrotopia.org (mailing list archive)
State Accepted
Commit ae3ed15da5889263de372ff9df2e83e16acca4cb
Delegated to: Netdev Maintainers
Headers show
Series [v2] net: ethernet: mtk_eth_soc: fix state in __mtk_foe_entry_clear | expand

Checks

Context Check Description
netdev/tree_selection success Guessing tree name failed - patch did not apply

Commit Message

Daniel Golle Sept. 30, 2022, 12:56 a.m. UTC
Setting ib1 state to MTK_FOE_STATE_UNBIND in __mtk_foe_entry_clear
routine as done by commit 0e80707d94e4c8 ("net: ethernet: mtk_eth_soc:
fix typo in __mtk_foe_entry_clear") breaks flow offloading, at least
on older MTK_NETSYS_V1 SoCs, OpenWrt users have confirmed the bug on
MT7622 and MT7621 systems.
Felix Fietkau suggested to use MTK_FOE_STATE_INVALID instead which
works well on both, MTK_NETSYS_V1 and MTK_NETSYS_V2.

Tested on MT7622 (Linksys E8450) and MT7986 (BananaPi BPI-R3).

Suggested-by: Felix Fietkau <nbd@nbd.name>
Fixes: 0e80707d94e4c8 ("net: ethernet: mtk_eth_soc: fix typo in __mtk_foe_entry_clear")
Fixes: 33fc42de33278b ("net: ethernet: mtk_eth_soc: support creating mac address based offload entries")
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
---
v2: rebased on top of netdev/net.git;main

 drivers/net/ethernet/mediatek/mtk_ppe.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

patchwork-bot+netdevbpf@kernel.org Oct. 1, 2022, 2:20 a.m. UTC | #1
Hello:

This patch was applied to netdev/net.git (master)
by Jakub Kicinski <kuba@kernel.org>:

On Fri, 30 Sep 2022 01:56:53 +0100 you wrote:
> Setting ib1 state to MTK_FOE_STATE_UNBIND in __mtk_foe_entry_clear
> routine as done by commit 0e80707d94e4c8 ("net: ethernet: mtk_eth_soc:
> fix typo in __mtk_foe_entry_clear") breaks flow offloading, at least
> on older MTK_NETSYS_V1 SoCs, OpenWrt users have confirmed the bug on
> MT7622 and MT7621 systems.
> Felix Fietkau suggested to use MTK_FOE_STATE_INVALID instead which
> works well on both, MTK_NETSYS_V1 and MTK_NETSYS_V2.
> 
> [...]

Here is the summary with links:
  - [v2] net: ethernet: mtk_eth_soc: fix state in __mtk_foe_entry_clear
    https://git.kernel.org/netdev/net/c/ae3ed15da588

You are awesome, thank you!
Matthieu Baerts Oct. 3, 2022, 12:59 p.m. UTC | #2
Hello,

On 30/09/2022 02:56, Daniel Golle wrote:
> Setting ib1 state to MTK_FOE_STATE_UNBIND in __mtk_foe_entry_clear
> routine as done by commit 0e80707d94e4c8 ("net: ethernet: mtk_eth_soc:
> fix typo in __mtk_foe_entry_clear") breaks flow offloading, at least
> on older MTK_NETSYS_V1 SoCs, OpenWrt users have confirmed the bug on
> MT7622 and MT7621 systems.
> Felix Fietkau suggested to use MTK_FOE_STATE_INVALID instead which
> works well on both, MTK_NETSYS_V1 and MTK_NETSYS_V2.
> 
> Tested on MT7622 (Linksys E8450) and MT7986 (BananaPi BPI-R3).
> 
> Suggested-by: Felix Fietkau <nbd@nbd.name>
> Fixes: 0e80707d94e4c8 ("net: ethernet: mtk_eth_soc: fix typo in __mtk_foe_entry_clear")
> Fixes: 33fc42de33278b ("net: ethernet: mtk_eth_soc: support creating mac address based offload entries")
> Signed-off-by: Daniel Golle <daniel@makrotopia.org>
> ---
> v2: rebased on top of netdev/net.git;main

FYI and as expected when reading this email thread, we got a small
conflict when merging -net in net-next in the MPTCP tree due to this
patch applied in -net:

  ae3ed15da588 ("net: ethernet: mtk_eth_soc: fix state in
__mtk_foe_entry_clear")

and this one from net-next:

  9d8cb4c096ab ("net: ethernet: mtk_eth_soc: add foe_entry_size to
mtk_eth_soc")

The conflict has been resolved on our side[1] inspired by Daniel's v1.
The resolution we suggest is attached to this email.

Cheers,
Matt

[1] https://github.com/multipath-tcp/mptcp_net-next/commit/7af5fac658ba
Daniel Golle Oct. 3, 2022, 1:47 p.m. UTC | #3
On Mon, Oct 03, 2022 at 02:59:32PM +0200, Matthieu Baerts wrote:
> Hello,
> 
> On 30/09/2022 02:56, Daniel Golle wrote:
> > Setting ib1 state to MTK_FOE_STATE_UNBIND in __mtk_foe_entry_clear
> > routine as done by commit 0e80707d94e4c8 ("net: ethernet: mtk_eth_soc:
> > fix typo in __mtk_foe_entry_clear") breaks flow offloading, at least
> > on older MTK_NETSYS_V1 SoCs, OpenWrt users have confirmed the bug on
> > MT7622 and MT7621 systems.
> > Felix Fietkau suggested to use MTK_FOE_STATE_INVALID instead which
> > works well on both, MTK_NETSYS_V1 and MTK_NETSYS_V2.
> > 
> > Tested on MT7622 (Linksys E8450) and MT7986 (BananaPi BPI-R3).
> > 
> > Suggested-by: Felix Fietkau <nbd@nbd.name>
> > Fixes: 0e80707d94e4c8 ("net: ethernet: mtk_eth_soc: fix typo in __mtk_foe_entry_clear")
> > Fixes: 33fc42de33278b ("net: ethernet: mtk_eth_soc: support creating mac address based offload entries")
> > Signed-off-by: Daniel Golle <daniel@makrotopia.org>
> > ---
> > v2: rebased on top of netdev/net.git;main
> 
> FYI and as expected when reading this email thread, we got a small
> conflict when merging -net in net-next in the MPTCP tree due to this
> patch applied in -net:
> 
>   ae3ed15da588 ("net: ethernet: mtk_eth_soc: fix state in
> __mtk_foe_entry_clear")
> 
> and this one from net-next:
> 
>   9d8cb4c096ab ("net: ethernet: mtk_eth_soc: add foe_entry_size to
> mtk_eth_soc")
> 
> The conflict has been resolved on our side[1] inspired by Daniel's v1.
> The resolution we suggest is attached to this email.

conflict resolution: Acked-by: Daniel Golle <daniel@makrotopia.org>

> 
> Cheers,
> Matt
> 
> [1] https://github.com/multipath-tcp/mptcp_net-next/commit/7af5fac658ba
> -- 
> Tessares | Belgium | Hybrid Access Solutions
> www.tessares.net

> diff --cc drivers/net/ethernet/mediatek/mtk_ppe.c
> index 887f430734f7,148ea636ef97..ae00e572390d
> --- a/drivers/net/ethernet/mediatek/mtk_ppe.c
> +++ b/drivers/net/ethernet/mediatek/mtk_ppe.c
> @@@ -439,10 -410,9 +439,10 @@@ __mtk_foe_entry_clear(struct mtk_ppe *p
>   
>   	hlist_del_init(&entry->list);
>   	if (entry->hash != 0xffff) {
>  -		ppe->foe_table[entry->hash].ib1 &= ~MTK_FOE_IB1_STATE;
>  -		ppe->foe_table[entry->hash].ib1 |= FIELD_PREP(MTK_FOE_IB1_STATE,
>  -							      MTK_FOE_STATE_INVALID);
>  +		struct mtk_foe_entry *hwe = mtk_foe_get_entry(ppe, entry->hash);
>  +
>  +		hwe->ib1 &= ~MTK_FOE_IB1_STATE;
> - 		hwe->ib1 |= FIELD_PREP(MTK_FOE_IB1_STATE, MTK_FOE_STATE_UNBIND);
> ++		hwe->ib1 |= FIELD_PREP(MTK_FOE_IB1_STATE, MTK_FOE_STATE_INVALID);
>   		dma_wmb();
>   	}
>   	entry->hash = 0xffff;
diff mbox series

Patch

diff --git a/drivers/net/ethernet/mediatek/mtk_ppe.c b/drivers/net/ethernet/mediatek/mtk_ppe.c
index cfe804bc8d2055..148ea636ef9794 100644
--- a/drivers/net/ethernet/mediatek/mtk_ppe.c
+++ b/drivers/net/ethernet/mediatek/mtk_ppe.c
@@ -412,7 +412,7 @@  __mtk_foe_entry_clear(struct mtk_ppe *ppe, struct mtk_flow_entry *entry)
 	if (entry->hash != 0xffff) {
 		ppe->foe_table[entry->hash].ib1 &= ~MTK_FOE_IB1_STATE;
 		ppe->foe_table[entry->hash].ib1 |= FIELD_PREP(MTK_FOE_IB1_STATE,
-							      MTK_FOE_STATE_UNBIND);
+							      MTK_FOE_STATE_INVALID);
 		dma_wmb();
 	}
 	entry->hash = 0xffff;