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i40e: move I40E_FLAG_TEMP_LINK_POLLING to state field 

This flag is modified outside of the RTNL lock and thus should not be
part of the pf->flags variable.

Use a state bit instead, so that we can use atomic bit operations.

This is part of a larger effort to remove cmpxchg64 in
i40e_set_priv_flags()

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Jacob Keller 2018-03-16 01:26:33 -07:00 committed by Jeff Kirsher
parent 134201aead
commit 0605c45ce5
2 changed files with 5 additions and 5 deletions
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3
drivers/net/ethernet/intel/i40e/i40e.h
View File

@ -166,6 +166,7 @@ enum i40e_state_t {
__I40E_VF_DISABLE,
__I40E_MACVLAN_SYNC_PENDING,
__I40E_UDP_FILTER_SYNC_PENDING,
__I40E_TEMP_LINK_POLLING,
/* This must be last as it determines the size of the BITMAP */
__I40E_STATE_SIZE__,
};
@ -534,7 +535,7 @@ struct i40e_pf {
#define I40E_FLAG_VEB_STATS_ENABLED BIT_ULL(17)
#define I40E_FLAG_LINK_POLLING_ENABLED BIT_ULL(18)
#define I40E_FLAG_TRUE_PROMISC_SUPPORT BIT_ULL(19)
#define I40E_FLAG_TEMP_LINK_POLLING BIT_ULL(20)
/* Gap for BIT_ULL(20) */
#define I40E_FLAG_LEGACY_RX BIT_ULL(21)
#define I40E_FLAG_PTP BIT_ULL(22)
#define I40E_FLAG_IWARP_ENABLED BIT_ULL(23)

7
drivers/net/ethernet/intel/i40e/i40e_main.c
View File

@ -8432,13 +8432,12 @@ static void i40e_link_event(struct i40e_pf *pf)
/* On success, disable temp link polling */
if (status == I40E_SUCCESS) {
if (pf->flags & I40E_FLAG_TEMP_LINK_POLLING)
pf->flags &= ~I40E_FLAG_TEMP_LINK_POLLING;
clear_bit(__I40E_TEMP_LINK_POLLING, pf->state);
} else {
/* Enable link polling temporarily until i40e_get_link_status
* returns I40E_SUCCESS
*/
pf->flags |= I40E_FLAG_TEMP_LINK_POLLING;
set_bit(__I40E_TEMP_LINK_POLLING, pf->state);
dev_dbg(&pf->pdev->dev, "couldn't get link state, status: %d\n",
status);
return;
@ -8490,7 +8489,7 @@ static void i40e_watchdog_subtask(struct i40e_pf *pf)
pf->service_timer_previous = jiffies;
if ((pf->flags & I40E_FLAG_LINK_POLLING_ENABLED) ||
(pf->flags & I40E_FLAG_TEMP_LINK_POLLING))
test_bit(__I40E_TEMP_LINK_POLLING, pf->state))
i40e_link_event(pf);
/* Update the stats for active netdevs so the network stack