linux-kernel - [PATCH net-next v7 1/2] dt-bindings: net: snps,dwmac: Tx coe unsupported

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Message-Id: <20230916063312.7011-2-rohan.g.thomas@intel.com>
Date:   Sat, 16 Sep 2023 14:33:11 +0800
From:   Rohan G Thomas <rohan.g.thomas@...el.com>
To:     "David S . Miller" <davem@...emloft.net>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Jose Abreu <joabreu@...opsys.com>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Giuseppe Cavallaro <peppe.cavallaro@...com>,
        fancer.lancer@...il.com
Cc:     netdev@...r.kernel.org, devicetree@...r.kernel.org,
        linux-stm32@...md-mailman.stormreply.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Rohan G Thomas <rohan.g.thomas@...el.com>
Subject: [PATCH net-next v7 1/2] dt-bindings: net: snps,dwmac: Tx coe unsupported

Add dt-bindings for coe-unsupported property per tx queue. Some DWMAC
IPs support tx checksum offloading(coe) only for a few tx queues.

DW xGMAC IP can be synthesized such that it can support tx coe only
for a few initial tx queues. Also as Serge pointed out, for the DW
QoS IP tx coe can be individually configured for each tx queue. This
property is added to have sw fallback for checksum calculation if a
tx queue doesn't support tx coe.

Signed-off-by: Rohan G Thomas <rohan.g.thomas@...el.com>
---
 Documentation/devicetree/bindings/net/snps,dwmac.yaml | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/snps,dwmac.yaml b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
index ddf9522a5dc2..5c2769dc689a 100644
--- a/Documentation/devicetree/bindings/net/snps,dwmac.yaml
+++ b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
@@ -394,6 +394,11 @@ properties:
               When a PFC frame is received with priorities matching the bitmask,
               the queue is blocked from transmitting for the pause time specified
               in the PFC frame.
+
+          snps,coe-unsupported:
+            type: boolean
+            description: TX checksum offload is unsupported by the TX queue.
+
         allOf:
           - if:
               required:
-- 
2.25.1