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net: hibmcge: Add support for checksum offload

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This patch implements the rx checksum offload feature.

The tx checksum offload processing in .ndo_start_xmit()
has been accepted. This patch also adds the tx checksum
feature, including NETIF_F_IP_CSUM and NETIF_F_IPV6_CSUM

Signed-off-by: Jijie Shao <shaojijie@huawei.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Jijie Shao 2025-02-28 19:54:07 +08:00 committed by Paolo Abeni
parent c0bf9bf31e
commit 833b65a3b5
2 changed files with 29 additions and 6 deletions
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6
drivers/net/ethernet/hisilicon/hibmcge/hbg_main.c
View File

@ -14,6 +14,9 @@
#include "hbg_txrx.h"
#include "hbg_debugfs.h"
#define HBG_SUPPORT_FEATURES (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | \
NETIF_F_RXCSUM)
static void hbg_all_irq_enable(struct hbg_priv *priv, bool enabled)
{
struct hbg_irq_info *info;
@ -419,6 +422,9 @@ static int hbg_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
if (ret)
return ret;
/* set default features */
netdev->features |= HBG_SUPPORT_FEATURES;
netdev->hw_features |= HBG_SUPPORT_FEATURES;
netdev->priv_flags |= IFF_UNICAST_FLT;
netdev->pcpu_stat_type = NETDEV_PCPU_STAT_TSTATS;

29
drivers/net/ethernet/hisilicon/hibmcge/hbg_txrx.c
View File

@ -202,8 +202,14 @@ static int hbg_napi_tx_recycle(struct napi_struct *napi, int budget)
}
static bool hbg_rx_check_l3l4_error(struct hbg_priv *priv,
struct hbg_rx_desc *desc)
struct hbg_rx_desc *desc,
struct sk_buff *skb)
{
bool rx_checksum_offload = !!(priv->netdev->features & NETIF_F_RXCSUM);
skb->ip_summed = rx_checksum_offload ?
CHECKSUM_UNNECESSARY : CHECKSUM_NONE;
if (likely(!FIELD_GET(HBG_RX_DESC_W4_L3_ERR_CODE_M, desc->word4) &&
!FIELD_GET(HBG_RX_DESC_W4_L4_ERR_CODE_M, desc->word4)))
return true;
@ -215,8 +221,13 @@ static bool hbg_rx_check_l3l4_error(struct hbg_priv *priv,
priv->stats.rx_desc_l3_wrong_head_cnt++;
return false;
case HBG_L3_CSUM_ERR:
skb->ip_summed = CHECKSUM_NONE;
priv->stats.rx_desc_l3_csum_err_cnt++;
return false;
/* Don't drop packets on csum validation failure,
* suggest by Jakub
*/
break;
case HBG_L3_LEN_ERR:
priv->stats.rx_desc_l3_len_err_cnt++;
return false;
@ -238,8 +249,13 @@ static bool hbg_rx_check_l3l4_error(struct hbg_priv *priv,
priv->stats.rx_desc_l4_len_err_cnt++;
return false;
case HBG_L4_CSUM_ERR:
skb->ip_summed = CHECKSUM_NONE;
priv->stats.rx_desc_l4_csum_err_cnt++;
return false;
/* Don't drop packets on csum validation failure,
* suggest by Jakub
*/
break;
case HBG_L4_ZERO_PORT_NUM:
priv->stats.rx_desc_l4_zero_port_num_cnt++;
return false;
@ -322,7 +338,8 @@ static void hbg_update_rx_protocol_stats(struct hbg_priv *priv,
hbg_update_rx_ip_protocol_stats(priv, desc);
}
static bool hbg_rx_pkt_check(struct hbg_priv *priv, struct hbg_rx_desc *desc)
static bool hbg_rx_pkt_check(struct hbg_priv *priv, struct hbg_rx_desc *desc,
struct sk_buff *skb)
{
if (unlikely(FIELD_GET(HBG_RX_DESC_W2_PKT_LEN_M, desc->word2) >
priv->dev_specs.max_frame_len)) {
@ -342,7 +359,7 @@ static bool hbg_rx_pkt_check(struct hbg_priv *priv, struct hbg_rx_desc *desc)
return false;
}
if (unlikely(!hbg_rx_check_l3l4_error(priv, desc))) {
if (unlikely(!hbg_rx_check_l3l4_error(priv, desc, skb))) {
priv->stats.rx_desc_l3l4_err_cnt++;
return false;
}
@ -413,7 +430,7 @@ static int hbg_napi_rx_poll(struct napi_struct *napi, int budget)
rx_desc = (struct hbg_rx_desc *)buffer->skb->data;
pkt_len = FIELD_GET(HBG_RX_DESC_W2_PKT_LEN_M, rx_desc->word2);
if (unlikely(!hbg_rx_pkt_check(priv, rx_desc))) {
if (unlikely(!hbg_rx_pkt_check(priv, rx_desc, buffer->skb))) {
hbg_buffer_free(buffer);
goto next_buffer;
}