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net/hns3: get link state change through mailbox

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Currently, firmware adds the function of sending message to PF driver
through mailbox when the link status is changed, hns3 PMD driver can
usually recognize link state change faster through the message.

And in some extreme cases, this way is not faster than existing method
regularly updating link status by issuing the command every second in PF
driver, because of the parallel processing of mailbox and command
messages in firmware. So we reserve updating link status using timers in
PF driver, and add querying link status by issuing command to the
firmware in '.link_update' ops implementation function named
hns3_dev_link_update to solve the out of date link status.

Signed-off-by: Hongbo Zheng <zhenghongbo3@huawei.com>
Signed-off-by: Wei Hu (Xavier) <xavier.huwei@huawei.com>
Signed-off-by: Huisong Li <lihuisong@huawei.com>
This commit is contained in:
Hongbo Zheng 2019-12-21 18:32:46 +08:00 committed by Ferruh Yigit
parent 02a7b55657
commit 109e4dd1bd
4 changed files with 58 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
drivers/net/hns3/hns3_ethdev.c
View File

@ -77,6 +77,7 @@ static enum hns3_reset_level hns3_get_reset_level(struct hns3_adapter *hns,
static int hns3_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu);
static int hns3_vlan_pvid_configure(struct hns3_adapter *hns, uint16_t pvid,
int on);
static int hns3_update_speed_duplex(struct rte_eth_dev *eth_dev);
static void
hns3_pf_disable_irq0(struct hns3_hw *hw)
@ -218,6 +219,8 @@ hns3_interrupt_handler(void *param)
hns3_schedule_reset(hns);
} else if (event_cause == HNS3_VECTOR0_EVENT_RST)
hns3_schedule_reset(hns);
else if (event_cause == HNS3_VECTOR0_EVENT_MBX)
hns3_dev_handle_mbx_msg(hw);
else
hns3_err(hw, "Received unknown event");
@ -2302,6 +2305,11 @@ hns3_dev_link_update(struct rte_eth_dev *eth_dev,
struct hns3_mac *mac = &hw->mac;
struct rte_eth_link new_link;
if (!hns3_is_reset_pending(hns)) {
hns3_update_speed_duplex(eth_dev);
hns3_update_link_status(hw);
}
memset(&new_link, 0, sizeof(new_link));
switch (mac->link_speed) {
case ETH_SPEED_NUM_10M:
@ -3806,14 +3814,16 @@ hns3_get_mac_link_status(struct hns3_hw *hw)
return !!link_status;
}
static void
void
hns3_update_link_status(struct hns3_hw *hw)
{
int state;
state = hns3_get_mac_link_status(hw);
if (state != hw->mac.link_status)
if (state != hw->mac.link_status) {
hw->mac.link_status = state;
hns3_warn(hw, "Link status change to %s!", state ? "up" : "down");
}
}
static void

1
drivers/net/hns3/hns3_ethdev.h
View File

@ -631,6 +631,7 @@ int hns3_dev_filter_ctrl(struct rte_eth_dev *dev,
enum rte_filter_op filter_op, void *arg);
bool hns3_is_reset_pending(struct hns3_adapter *hns);
bool hns3vf_is_reset_pending(struct hns3_adapter *hns);
void hns3_update_link_status(struct hns3_hw *hw);
static inline bool
is_reset_pending(struct hns3_adapter *hns)

37
drivers/net/hns3/hns3_mbx.c
View File

@ -282,6 +282,40 @@ hns3_update_resp_position(struct hns3_hw *hw, uint32_t resp_msg)
resp->tail = tail;
}
static void
hns3_link_fail_parse(struct hns3_hw *hw, uint8_t link_fail_code)
{
switch (link_fail_code) {
case HNS3_MBX_LF_NORMAL:
break;
case HNS3_MBX_LF_REF_CLOCK_LOST:
hns3_warn(hw, "Reference clock lost!");
break;
case HNS3_MBX_LF_XSFP_TX_DISABLE:
hns3_warn(hw, "SFP tx is disabled!");
break;
case HNS3_MBX_LF_XSFP_ABSENT:
hns3_warn(hw, "SFP is absent!");
break;
default:
hns3_warn(hw, "Unknown fail code:%u!", link_fail_code);
break;
}
}
static void
hns3_handle_link_change_event(struct hns3_hw *hw,
struct hns3_mbx_pf_to_vf_cmd *req)
{
#define LINK_STATUS_OFFSET 1
#define LINK_FAIL_CODE_OFFSET 2
if (!req->msg[LINK_STATUS_OFFSET])
hns3_link_fail_parse(hw, req->msg[LINK_FAIL_CODE_OFFSET]);
hns3_update_link_status(hw);
}
void
hns3_dev_handle_mbx_msg(struct hns3_hw *hw)
{
@ -335,6 +369,9 @@ hns3_dev_handle_mbx_msg(struct hns3_hw *hw)
hns3_mbx_handler(hw);
break;
case HNS3_MBX_PUSH_LINK_STATUS:
hns3_handle_link_change_event(hw, req);
break;
default:
hns3_err(hw,
"VF received unsupported(%d) mbx msg from PF",

8
drivers/net/hns3/hns3_mbx.h
View File

@ -41,6 +41,7 @@ enum HNS3_MBX_OPCODE {
HNS3_MBX_GET_QID_IN_PF, /* (VF -> PF) get queue id in pf */
HNS3_MBX_HANDLE_VF_TBL = 38, /* (VF -> PF) store/clear hw cfg tbl */
HNS3_MBX_PUSH_LINK_STATUS = 201, /* (IMP -> PF) get port link status */
};
/* below are per-VF mac-vlan subcodes */
@ -64,6 +65,13 @@ enum hns3_mbx_tbl_cfg_subcode {
HNS3_MBX_VPORT_LIST_CLEAR = 0,
};
enum hns3_mbx_link_fail_subcode {
HNS3_MBX_LF_NORMAL = 0,
HNS3_MBX_LF_REF_CLOCK_LOST,
HNS3_MBX_LF_XSFP_TX_DISABLE,
HNS3_MBX_LF_XSFP_ABSENT,
};
#define HNS3_MBX_MAX_MSG_SIZE 16
#define HNS3_MBX_MAX_RESP_DATA_SIZE 8
#define HNS3_MBX_RING_MAP_BASIC_MSG_NUM 3