Commit cd691050 authored by Raju Lakkaraju's avatar Raju Lakkaraju Committed by David S. Miller
Browse files

net: lan743x: Add support for Rx IP & TCP checksum offload 



Add Rx IP and TCP checksum offload

Signed-off-by: default avatarRaju Lakkaraju <Raju.Lakkaraju@microchip.com>
Reported-by: default avatarkernel test robot <lkp@intel.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 721f80c4

drivers/net/ethernet/microchip/lan743x_main.c

+13 −1
Original line number Diff line number Diff line
@@ -1585,6 +1585,9 @@ static void lan743x_rfe_set_multicast(struct lan743x_adapter *adapter) 
			rfctl |= RFE_CTL_AM_;

	}



	if (netdev->features & NETIF_F_RXCSUM)

		rfctl |= RFE_CTL_IP_COE_ | RFE_CTL_TCP_UDP_COE_;



	memset(hash_table, 0, DP_SEL_VHF_HASH_LEN * sizeof(u32));

	if (netdev_mc_count(netdev)) {

		struct netdev_hw_addr *ha;
@@ -2547,6 +2550,7 @@ static int lan743x_rx_process_buffer(struct lan743x_rx *rx) 
	int result = RX_PROCESS_RESULT_NOTHING_TO_DO;

	struct lan743x_rx_buffer_info *buffer_info;

	int frame_length, buffer_length;

	bool is_ice, is_tce, is_icsm;

	int extension_index = -1;

	bool is_last, is_first;

	struct sk_buff *skb;
@@ -2593,6 +2597,9 @@ static int lan743x_rx_process_buffer(struct lan743x_rx *rx) 
	frame_length =

		RX_DESC_DATA0_FRAME_LENGTH_GET_(le32_to_cpu(descriptor->data0));

	buffer_length = buffer_info->buffer_length;

	is_ice = le32_to_cpu(descriptor->data1) & RX_DESC_DATA1_STATUS_ICE_;

	is_tce = le32_to_cpu(descriptor->data1) & RX_DESC_DATA1_STATUS_TCE_;

	is_icsm = le32_to_cpu(descriptor->data1) & RX_DESC_DATA1_STATUS_ICSM_;



	netdev_dbg(netdev, "%s%schunk: %d/%d",

		   is_first ? "first " : "      ",
@@ -2661,6 +2668,10 @@ static int lan743x_rx_process_buffer(struct lan743x_rx *rx) 
	if (is_last && rx->skb_head) {

		rx->skb_head->protocol = eth_type_trans(rx->skb_head,

							rx->adapter->netdev);

		if (rx->adapter->netdev->features & NETIF_F_RXCSUM) {

			if (!is_ice && !is_tce && !is_icsm)

				skb->ip_summed = CHECKSUM_UNNECESSARY;

		}

		netdev_dbg(netdev, "sending %d byte frame to OS",

			   rx->skb_head->len);

		napi_gro_receive(&rx->napi, rx->skb_head);
@@ -3383,7 +3394,8 @@ static int lan743x_pcidev_probe(struct pci_dev *pdev, 


	adapter->netdev->netdev_ops = &lan743x_netdev_ops;

	adapter->netdev->ethtool_ops = &lan743x_ethtool_ops;

	adapter->netdev->features = NETIF_F_SG | NETIF_F_TSO | NETIF_F_HW_CSUM;

	adapter->netdev->features = NETIF_F_SG | NETIF_F_TSO |

				    NETIF_F_HW_CSUM | NETIF_F_RXCSUM;

	adapter->netdev->hw_features = adapter->netdev->features;



	/* carrier off reporting is important to ethtool even BEFORE open */

drivers/net/ethernet/microchip/lan743x_main.h

+5 −0
Original line number Diff line number Diff line
@@ -266,6 +266,8 @@ 
#define RFE_ADDR_FILT_LO(x)		(0x404 + (8 * (x)))



#define RFE_CTL				(0x508)

#define RFE_CTL_TCP_UDP_COE_		BIT(12)

#define RFE_CTL_IP_COE_			BIT(11)

#define RFE_CTL_AB_			BIT(10)

#define RFE_CTL_AM_			BIT(9)

#define RFE_CTL_AU_			BIT(8)
@@ -1121,6 +1123,9 @@ struct lan743x_tx_buffer_info { 
	(((data0) & RX_DESC_DATA0_FRAME_LENGTH_MASK_) >> 16)

#define RX_DESC_DATA0_EXT_                (0x00004000)

#define RX_DESC_DATA0_BUF_LENGTH_MASK_    (0x00003FFF)

#define RX_DESC_DATA1_STATUS_ICE_         (0x00020000)

#define RX_DESC_DATA1_STATUS_TCE_         (0x00010000)

#define RX_DESC_DATA1_STATUS_ICSM_        (0x00000001)

#define RX_DESC_DATA2_TS_NS_MASK_         (0x3FFFFFFF)



#if ((NET_IP_ALIGN != 0) && (NET_IP_ALIGN != 2))