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path: root/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
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Diffstat (limited to 'drivers/net/ethernet/hisilicon/hns3/hns3_enet.c')
-rw-r--r--drivers/net/ethernet/hisilicon/hns3/hns3_enet.c67
1 files changed, 40 insertions, 27 deletions
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
index 22af3d6ce178..4b886a13e079 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
@@ -61,6 +61,9 @@ static unsigned int tx_sgl = 1;
module_param(tx_sgl, uint, 0600);
MODULE_PARM_DESC(tx_sgl, "Minimum number of frags when using dma_map_sg() to optimize the IOMMU mapping");
+static bool page_pool_enabled = true;
+module_param(page_pool_enabled, bool, 0400);
+
#define HNS3_SGL_SIZE(nfrag) (sizeof(struct scatterlist) * (nfrag) + \
sizeof(struct sg_table))
#define HNS3_MAX_SGL_SIZE ALIGN(HNS3_SGL_SIZE(HNS3_MAX_TSO_BD_NUM), \
@@ -73,6 +76,7 @@ MODULE_PARM_DESC(tx_sgl, "Minimum number of frags when using dma_map_sg() to opt
#define HNS3_OUTER_VLAN_TAG 2
#define HNS3_MIN_TX_LEN 33U
+#define HNS3_MIN_TUN_PKT_LEN 65U
/* hns3_pci_tbl - PCI Device ID Table
*
@@ -619,13 +623,9 @@ static int hns3_nic_set_real_num_queue(struct net_device *netdev)
return ret;
}
- for (i = 0; i < HNAE3_MAX_TC; i++) {
- if (!test_bit(i, &tc_info->tc_en))
- continue;
-
+ for (i = 0; i < tc_info->num_tc; i++)
netdev_set_tc_queue(netdev, i, tc_info->tqp_count[i],
tc_info->tqp_offset[i]);
- }
}
ret = netif_set_real_num_tx_queues(netdev, queue_size);
@@ -775,6 +775,11 @@ static int hns3_nic_net_open(struct net_device *netdev)
if (hns3_nic_resetting(netdev))
return -EBUSY;
+ if (!test_bit(HNS3_NIC_STATE_DOWN, &priv->state)) {
+ netdev_warn(netdev, "net open repeatedly!\n");
+ return 0;
+ }
+
netif_carrier_off(netdev);
ret = hns3_nic_set_real_num_queue(netdev);
@@ -1424,8 +1429,11 @@ static int hns3_set_l2l3l4(struct sk_buff *skb, u8 ol4_proto,
l4.tcp->doff);
break;
case IPPROTO_UDP:
- if (hns3_tunnel_csum_bug(skb))
- return skb_checksum_help(skb);
+ if (hns3_tunnel_csum_bug(skb)) {
+ int ret = skb_put_padto(skb, HNS3_MIN_TUN_PKT_LEN);
+
+ return ret ? ret : skb_checksum_help(skb);
+ }
hns3_set_field(*type_cs_vlan_tso, HNS3_TXD_L4CS_B, 1);
hns3_set_field(*type_cs_vlan_tso, HNS3_TXD_L4T_S,
@@ -1839,7 +1847,6 @@ void hns3_shinfo_pack(struct skb_shared_info *shinfo, __u32 *size)
static int hns3_skb_linearize(struct hns3_enet_ring *ring,
struct sk_buff *skb,
- u8 max_non_tso_bd_num,
unsigned int bd_num)
{
/* 'bd_num == UINT_MAX' means the skb' fraglist has a
@@ -1856,8 +1863,7 @@ static int hns3_skb_linearize(struct hns3_enet_ring *ring,
* will not help.
*/
if (skb->len > HNS3_MAX_TSO_SIZE ||
- (!skb_is_gso(skb) && skb->len >
- HNS3_MAX_NON_TSO_SIZE(max_non_tso_bd_num))) {
+ (!skb_is_gso(skb) && skb->len > HNS3_MAX_NON_TSO_SIZE)) {
u64_stats_update_begin(&ring->syncp);
ring->stats.hw_limitation++;
u64_stats_update_end(&ring->syncp);
@@ -1892,8 +1898,7 @@ static int hns3_nic_maybe_stop_tx(struct hns3_enet_ring *ring,
goto out;
}
- if (hns3_skb_linearize(ring, skb, max_non_tso_bd_num,
- bd_num))
+ if (hns3_skb_linearize(ring, skb, bd_num))
return -ENOMEM;
bd_num = hns3_tx_bd_count(skb->len);
@@ -3250,6 +3255,7 @@ static void hns3_buffer_detach(struct hns3_enet_ring *ring, int i)
{
hns3_unmap_buffer(ring, &ring->desc_cb[i]);
ring->desc[i].addr = 0;
+ ring->desc_cb[i].refill = 0;
}
static void hns3_free_buffer_detach(struct hns3_enet_ring *ring, int i,
@@ -3328,6 +3334,7 @@ static int hns3_alloc_and_attach_buffer(struct hns3_enet_ring *ring, int i)
ring->desc[i].addr = cpu_to_le64(ring->desc_cb[i].dma +
ring->desc_cb[i].page_offset);
+ ring->desc_cb[i].refill = 1;
return 0;
}
@@ -3357,6 +3364,7 @@ static void hns3_replace_buffer(struct hns3_enet_ring *ring, int i,
{
hns3_unmap_buffer(ring, &ring->desc_cb[i]);
ring->desc_cb[i] = *res_cb;
+ ring->desc_cb[i].refill = 1;
ring->desc[i].addr = cpu_to_le64(ring->desc_cb[i].dma +
ring->desc_cb[i].page_offset);
ring->desc[i].rx.bd_base_info = 0;
@@ -3365,6 +3373,7 @@ static void hns3_replace_buffer(struct hns3_enet_ring *ring, int i,
static void hns3_reuse_buffer(struct hns3_enet_ring *ring, int i)
{
ring->desc_cb[i].reuse_flag = 0;
+ ring->desc_cb[i].refill = 1;
ring->desc[i].addr = cpu_to_le64(ring->desc_cb[i].dma +
ring->desc_cb[i].page_offset);
ring->desc[i].rx.bd_base_info = 0;
@@ -3471,10 +3480,14 @@ static int hns3_desc_unused(struct hns3_enet_ring *ring)
int ntc = ring->next_to_clean;
int ntu = ring->next_to_use;
+ if (unlikely(ntc == ntu && !ring->desc_cb[ntc].refill))
+ return ring->desc_num;
+
return ((ntc >= ntu) ? 0 : ring->desc_num) + ntc - ntu;
}
-static void hns3_nic_alloc_rx_buffers(struct hns3_enet_ring *ring,
+/* Return true if there is any allocation failure */
+static bool hns3_nic_alloc_rx_buffers(struct hns3_enet_ring *ring,
int cleand_count)
{
struct hns3_desc_cb *desc_cb;
@@ -3499,7 +3512,10 @@ static void hns3_nic_alloc_rx_buffers(struct hns3_enet_ring *ring,
hns3_rl_err(ring_to_netdev(ring),
"alloc rx buffer failed: %d\n",
ret);
- break;
+
+ writel(i, ring->tqp->io_base +
+ HNS3_RING_RX_RING_HEAD_REG);
+ return true;
}
hns3_replace_buffer(ring, ring->next_to_use, &res_cbs);
@@ -3512,6 +3528,7 @@ static void hns3_nic_alloc_rx_buffers(struct hns3_enet_ring *ring,
}
writel(i, ring->tqp->io_base + HNS3_RING_RX_RING_HEAD_REG);
+ return false;
}
static bool hns3_can_reuse_page(struct hns3_desc_cb *cb)
@@ -3816,6 +3833,7 @@ static void hns3_rx_ring_move_fw(struct hns3_enet_ring *ring)
{
ring->desc[ring->next_to_clean].rx.bd_base_info &=
cpu_to_le32(~BIT(HNS3_RXD_VLD_B));
+ ring->desc_cb[ring->next_to_clean].refill = 0;
ring->next_to_clean += 1;
if (unlikely(ring->next_to_clean == ring->desc_num))
@@ -4162,6 +4180,7 @@ int hns3_clean_rx_ring(struct hns3_enet_ring *ring, int budget,
{
#define RCB_NOF_ALLOC_RX_BUFF_ONCE 16
int unused_count = hns3_desc_unused(ring);
+ bool failure = false;
int recv_pkts = 0;
int err;
@@ -4170,9 +4189,9 @@ int hns3_clean_rx_ring(struct hns3_enet_ring *ring, int budget,
while (recv_pkts < budget) {
/* Reuse or realloc buffers */
if (unused_count >= RCB_NOF_ALLOC_RX_BUFF_ONCE) {
- hns3_nic_alloc_rx_buffers(ring, unused_count);
- unused_count = hns3_desc_unused(ring) -
- ring->pending_buf;
+ failure = failure ||
+ hns3_nic_alloc_rx_buffers(ring, unused_count);
+ unused_count = 0;
}
/* Poll one pkt */
@@ -4191,11 +4210,7 @@ int hns3_clean_rx_ring(struct hns3_enet_ring *ring, int budget,
}
out:
- /* Make all data has been write before submit */
- if (unused_count > 0)
- hns3_nic_alloc_rx_buffers(ring, unused_count);
-
- return recv_pkts;
+ return failure ? budget : recv_pkts;
}
static void hns3_update_rx_int_coalesce(struct hns3_enet_tqp_vector *tqp_vector)
@@ -4753,7 +4768,8 @@ static int hns3_alloc_ring_memory(struct hns3_enet_ring *ring)
goto out_with_desc_cb;
if (!HNAE3_IS_TX_RING(ring)) {
- hns3_alloc_page_pool(ring);
+ if (page_pool_enabled)
+ hns3_alloc_page_pool(ring);
ret = hns3_alloc_ring_buffers(ring);
if (ret)
@@ -4857,12 +4873,9 @@ static void hns3_init_tx_ring_tc(struct hns3_nic_priv *priv)
struct hnae3_tc_info *tc_info = &kinfo->tc_info;
int i;
- for (i = 0; i < HNAE3_MAX_TC; i++) {
+ for (i = 0; i < tc_info->num_tc; i++) {
int j;
- if (!test_bit(i, &tc_info->tc_en))
- continue;
-
for (j = 0; j < tc_info->tqp_count[i]; j++) {
struct hnae3_queue *q;
generated by cgit v1.2.3 (git 2.39.1) at 2025-06-02 01:35:44 +0000