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

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Add Rx IP and TCP checksum offload

Signed-off-by: Raju Lakkaraju <Raju.Lakkaraju@microchip.com>
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Raju Lakkaraju 2022-09-08 13:58:34 +05:30 committed by David S. Miller
parent 721f80c4d5
commit cd6910501c
2 changed files with 18 additions and 1 deletions
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14
drivers/net/ethernet/microchip/lan743x_main.c
View file

@ -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 */

5
drivers/net/ethernet/microchip/lan743x_main.h
View file

@ -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))