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net: hns3: Add reset interface implementation in client

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This patch implement the interface of reset notification in hns3_enet,
it will do resetting business which include shutdown nic device,
free and initialize client side resource.

Signed-off-by: qumingguang <qumingguang@huawei.com>
Signed-off-by: Lipeng <lipeng321@huawei.com>
Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Lipeng 2017-11-02 20:45:21 +08:00 committed by David S. Miller
parent f8fa222ca5
commit bb6b94a896
1 changed files with 153 additions and 0 deletions
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153
drivers/net/ethernet/hisilicon/hns3/hns3pf/hns3_enet.c
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@ -3009,11 +3009,164 @@ err_out:
return ret;
}
static void hns3_recover_hw_addr(struct net_device *ndev)
{
struct netdev_hw_addr_list *list;
struct netdev_hw_addr *ha, *tmp;
/* go through and sync uc_addr entries to the device */
list = &ndev->uc;
list_for_each_entry_safe(ha, tmp, &list->list, list)
hns3_nic_uc_sync(ndev, ha->addr);
/* go through and sync mc_addr entries to the device */
list = &ndev->mc;
list_for_each_entry_safe(ha, tmp, &list->list, list)
hns3_nic_mc_sync(ndev, ha->addr);
}
static void hns3_drop_skb_data(struct hns3_enet_ring *ring, struct sk_buff *skb)
{
dev_kfree_skb_any(skb);
}
static void hns3_clear_all_ring(struct hnae3_handle *h)
{
struct net_device *ndev = h->kinfo.netdev;
struct hns3_nic_priv *priv = netdev_priv(ndev);
u32 i;
for (i = 0; i < h->kinfo.num_tqps; i++) {
struct netdev_queue *dev_queue;
struct hns3_enet_ring *ring;
ring = priv->ring_data[i].ring;
hns3_clean_tx_ring(ring, ring->desc_num);
dev_queue = netdev_get_tx_queue(ndev,
priv->ring_data[i].queue_index);
netdev_tx_reset_queue(dev_queue);
ring = priv->ring_data[i + h->kinfo.num_tqps].ring;
hns3_clean_rx_ring(ring, ring->desc_num, hns3_drop_skb_data);
}
}
static int hns3_reset_notify_down_enet(struct hnae3_handle *handle)
{
struct hnae3_knic_private_info *kinfo = &handle->kinfo;
struct net_device *ndev = kinfo->netdev;
if (!netif_running(ndev))
return -EIO;
return hns3_nic_net_stop(ndev);
}
static int hns3_reset_notify_up_enet(struct hnae3_handle *handle)
{
struct hnae3_knic_private_info *kinfo = &handle->kinfo;
struct hns3_nic_priv *priv = netdev_priv(kinfo->netdev);
int ret = 0;
if (netif_running(kinfo->netdev)) {
ret = hns3_nic_net_up(kinfo->netdev);
if (ret) {
netdev_err(kinfo->netdev,
"hns net up fail, ret=%d!\n", ret);
return ret;
}
priv->last_reset_time = jiffies;
}
return ret;
}
static int hns3_reset_notify_init_enet(struct hnae3_handle *handle)
{
struct net_device *netdev = handle->kinfo.netdev;
struct hns3_nic_priv *priv = netdev_priv(netdev);
int ret;
priv->reset_level = 1;
hns3_init_mac_addr(netdev);
hns3_nic_set_rx_mode(netdev);
hns3_recover_hw_addr(netdev);
/* Carrier off reporting is important to ethtool even BEFORE open */
netif_carrier_off(netdev);
ret = hns3_get_ring_config(priv);
if (ret)
return ret;
ret = hns3_nic_init_vector_data(priv);
if (ret)
return ret;
ret = hns3_init_all_ring(priv);
if (ret) {
hns3_nic_uninit_vector_data(priv);
priv->ring_data = NULL;
}
return ret;
}
static int hns3_reset_notify_uninit_enet(struct hnae3_handle *handle)
{
struct net_device *netdev = handle->kinfo.netdev;
struct hns3_nic_priv *priv = netdev_priv(netdev);
int ret;
hns3_clear_all_ring(handle);
ret = hns3_nic_uninit_vector_data(priv);
if (ret) {
netdev_err(netdev, "uninit vector error\n");
return ret;
}
ret = hns3_uninit_all_ring(priv);
if (ret)
netdev_err(netdev, "uninit ring error\n");
priv->ring_data = NULL;
return ret;
}
static int hns3_reset_notify(struct hnae3_handle *handle,
enum hnae3_reset_notify_type type)
{
int ret = 0;
switch (type) {
case HNAE3_UP_CLIENT:
ret = hns3_reset_notify_up_enet(handle);
break;
case HNAE3_DOWN_CLIENT:
ret = hns3_reset_notify_down_enet(handle);
break;
case HNAE3_INIT_CLIENT:
ret = hns3_reset_notify_init_enet(handle);
break;
case HNAE3_UNINIT_CLIENT:
ret = hns3_reset_notify_uninit_enet(handle);
break;
default:
break;
}
return ret;
}
static const struct hnae3_client_ops client_ops = {
.init_instance = hns3_client_init,
.uninit_instance = hns3_client_uninit,
.link_status_change = hns3_link_status_change,
.setup_tc = hns3_client_setup_tc,
.reset_notify = hns3_reset_notify,
};
/* hns3_init_module - Driver registration routine