drivers: stm32_hal: Add option to enable HW checksum

Provide a Kconfig option to enable HW RX and TX checksum, which can increase throughput performances. Signed-off-by: Erwan Gouriou <[email protected]>
benys · Jan 11, 2023 · 8eee0af · 8eee0af
1 parent c8014d1
commit 8eee0af
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diff --git a/drivers/ethernet/Kconfig.stm32_hal b/drivers/ethernet/Kconfig.stm32_hal
@@ -122,6 +122,14 @@ config ETH_STM32_AUTO_NEGOTIATION_ENABLE
 	help
 	  Enable this if using autonegotiation
 
+config ETH_STM32_HW_CHECKSUM
+	bool "Use TX and RX hardware checksum"
+	depends on !SOC_SERIES_STM32H7X
+	help
+	  Enable receive and transmit checksum offload to enhance throughput
+	  performances.
+	  See reference manual for more information on this feature.
+
 if !ETH_STM32_AUTO_NEGOTIATION_ENABLE
 
 config ETH_STM32_SPEED_10M

diff --git a/drivers/ethernet/eth_stm32_hal.c b/drivers/ethernet/eth_stm32_hal.c
@@ -1245,6 +1245,10 @@ static enum ethernet_hw_caps eth_stm32_hal_get_capabilities(const struct device
 #endif
 #if defined(CONFIG_NET_LLDP)
 		| ETHERNET_LLDP
+#endif
+#if defined(CONFIG_ETH_STM32_HW_CHECKSUM)
+		| ETHERNET_HW_RX_CHKSUM_OFFLOAD
+		| ETHERNET_HW_TX_CHKSUM_OFFLOAD
 #endif
 		;
 }
@@ -1364,7 +1368,11 @@ static struct eth_stm32_hal_dev_data eth0_data = {
 #endif /* !CONFIG_ETH_STM32_AUTO_NEGOTIATION_ENABLE */
 			.PhyAddress = PHY_ADDR,
 			.RxMode = ETH_RXINTERRUPT_MODE,
+#if defined(CONFIG_ETH_STM32_HW_CHECKSUM)
+			.ChecksumMode = ETH_CHECKSUM_BY_HARDWARE,
+#else
 			.ChecksumMode = ETH_CHECKSUM_BY_SOFTWARE,
+#endif
 #endif /* !CONFIG_SOC_SERIES_STM32H7X */
 #if defined(CONFIG_ETH_STM32_HAL_MII)
 			.MediaInterface = ETH_MEDIA_INTERFACE_MII,