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net: hns: add fini_process for v2 napi process

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This patch adds fini_process for v2, it handles the packets recevied
by the hardware in the napi porcess. With this patch, the hardware irq
numbers will drop 50% per sec.

Signed-off-by: Daode Huang <huangdaode@hisilicon.com>
Reviewed-by: Yisen Zhuang <yisen.zhuang@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Daode Huang 2016-09-29 18:09:11 +01:00 committed by Doug Ledford
parent 6771cbf944
commit cee5add458
1 changed files with 38 additions and 7 deletions
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45
drivers/net/ethernet/hisilicon/hns/hns_enet.c
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@ -823,6 +823,8 @@ static void hns_nic_rx_fini_pro(struct hns_nic_ring_data *ring_data)
struct hnae_ring *ring = ring_data->ring;
int num = 0;
ring_data->ring->q->handle->dev->ops->toggle_ring_irq(ring, 0);
/* for hardware bug fixed */
num = readl_relaxed(ring->io_base + RCB_REG_FBDNUM);
@ -834,6 +836,20 @@ static void hns_nic_rx_fini_pro(struct hns_nic_ring_data *ring_data)
}
}
static void hns_nic_rx_fini_pro_v2(struct hns_nic_ring_data *ring_data)
{
struct hnae_ring *ring = ring_data->ring;
int num = 0;
num = readl_relaxed(ring->io_base + RCB_REG_FBDNUM);
if (num == 0)
ring_data->ring->q->handle->dev->ops->toggle_ring_irq(
ring, 0);
else
napi_schedule(&ring_data->napi);
}
static inline void hns_nic_reclaim_one_desc(struct hnae_ring *ring,
int *bytes, int *pkts)
{
@ -935,7 +951,11 @@ static int hns_nic_tx_poll_one(struct hns_nic_ring_data *ring_data,
static void hns_nic_tx_fini_pro(struct hns_nic_ring_data *ring_data)
{
struct hnae_ring *ring = ring_data->ring;
int head = readl_relaxed(ring->io_base + RCB_REG_HEAD);
int head;
ring_data->ring->q->handle->dev->ops->toggle_ring_irq(ring, 0);
head = readl_relaxed(ring->io_base + RCB_REG_HEAD);
if (head != ring->next_to_clean) {
ring_data->ring->q->handle->dev->ops->toggle_ring_irq(
@ -945,6 +965,18 @@ static void hns_nic_tx_fini_pro(struct hns_nic_ring_data *ring_data)
}
}
static void hns_nic_tx_fini_pro_v2(struct hns_nic_ring_data *ring_data)
{
struct hnae_ring *ring = ring_data->ring;
int head = readl_relaxed(ring->io_base + RCB_REG_HEAD);
if (head == ring->next_to_clean)
ring_data->ring->q->handle->dev->ops->toggle_ring_irq(
ring, 0);
else
napi_schedule(&ring_data->napi);
}
static void hns_nic_tx_clr_all_bufs(struct hns_nic_ring_data *ring_data)
{
struct hnae_ring *ring = ring_data->ring;
@ -976,10 +1008,7 @@ static int hns_nic_common_poll(struct napi_struct *napi, int budget)
if (clean_complete >= 0 && clean_complete < budget) {
napi_complete(napi);
ring_data->ring->q->handle->dev->ops->toggle_ring_irq(
ring_data->ring, 0);
if (ring_data->fini_process)
ring_data->fini_process(ring_data);
ring_data->fini_process(ring_data);
return 0;
}
@ -1755,7 +1784,8 @@ static int hns_nic_init_ring_data(struct hns_nic_priv *priv)
rd->queue_index = i;
rd->ring = &h->qs[i]->tx_ring;
rd->poll_one = hns_nic_tx_poll_one;
rd->fini_process = is_ver1 ? hns_nic_tx_fini_pro : NULL;
rd->fini_process = is_ver1 ? hns_nic_tx_fini_pro :
hns_nic_tx_fini_pro_v2;
netif_napi_add(priv->netdev, &rd->napi,
hns_nic_common_poll, NIC_TX_CLEAN_MAX_NUM);
@ -1767,7 +1797,8 @@ static int hns_nic_init_ring_data(struct hns_nic_priv *priv)
rd->ring = &h->qs[i - h->q_num]->rx_ring;
rd->poll_one = hns_nic_rx_poll_one;
rd->ex_process = hns_nic_rx_up_pro;
rd->fini_process = is_ver1 ? hns_nic_rx_fini_pro : NULL;
rd->fini_process = is_ver1 ? hns_nic_rx_fini_pro :
hns_nic_rx_fini_pro_v2;
netif_napi_add(priv->netdev, &rd->napi,
hns_nic_common_poll, NIC_RX_CLEAN_MAX_NUM);