This patch fixes link status update problem in interrupt mode.
Previously, directly reading link status register instead of
accessing via admin queue command may cause the link status
change interrupt callback inactive. This patch fixes the
problem by making the driver only read the register in
"no wait" and polling mode.
Bugzilla ID: 54
Fixes:
eef2daf2e199 ("net/i40e: fix link update no wait")
Cc: stable@dpdk.org
Signed-off-by: Fan Zhang <roy.fan.zhang@intel.com>
Acked-by: Qi Zhang <qi.z.zhang@intel.com>
Tested-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
}
static __rte_always_inline void
}
static __rte_always_inline void
-update_link_no_wait(struct i40e_hw *hw, struct rte_eth_link *link)
+update_link_reg(struct i40e_hw *hw, struct rte_eth_link *link)
{
/* Link status registers and values*/
#define I40E_PRTMAC_LINKSTA 0x001E2420
{
/* Link status registers and values*/
#define I40E_PRTMAC_LINKSTA 0x001E2420
}
static __rte_always_inline void
}
static __rte_always_inline void
-update_link_wait(struct i40e_hw *hw, struct rte_eth_link *link,
- bool enable_lse)
+update_link_aq(struct i40e_hw *hw, struct rte_eth_link *link,
+ bool enable_lse, int wait_to_complete)
{
#define CHECK_INTERVAL 100 /* 100ms */
#define MAX_REPEAT_TIME 10 /* 1s (10 * 100ms) in total */
{
#define CHECK_INTERVAL 100 /* 100ms */
#define MAX_REPEAT_TIME 10 /* 1s (10 * 100ms) in total */
}
link->link_status = link_status.link_info & I40E_AQ_LINK_UP;
}
link->link_status = link_status.link_info & I40E_AQ_LINK_UP;
- if (unlikely(link->link_status != 0))
+ if (!wait_to_complete || link->link_status)
break;
rte_delay_ms(CHECK_INTERVAL);
break;
rte_delay_ms(CHECK_INTERVAL);
link.link_autoneg = !(dev->data->dev_conf.link_speeds &
ETH_LINK_SPEED_FIXED);
link.link_autoneg = !(dev->data->dev_conf.link_speeds &
ETH_LINK_SPEED_FIXED);
- if (!wait_to_complete)
- update_link_no_wait(hw, &link);
+ if (!wait_to_complete && !enable_lse)
+ update_link_reg(hw, &link);
- update_link_wait(hw, &link, enable_lse);
+ update_link_aq(hw, &link, enable_lse, wait_to_complete);
ret = rte_eth_linkstatus_set(dev, &link);
i40e_notify_all_vfs_link_status(dev);
ret = rte_eth_linkstatus_set(dev, &link);
i40e_notify_all_vfs_link_status(dev);