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| author | Emil Tantilov <emil.s.tantilov@intel.com> | 2016-07-29 23:46:31 +0200 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2016-08-19 07:47:52 +0200 |
| commit | 57ca2a4fed520ee85a8fe809ff1947ec7c25aec9 (patch) | |
| tree | 10ad11c6c68fccc3cd549e217244a8f7c7b1863f | |
| parent | ixgbevf: only check Tx queue enablement when debugging (diff) | |
| download | linux-57ca2a4fed520ee85a8fe809ff1947ec7c25aec9.tar.xz linux-57ca2a4fed520ee85a8fe809ff1947ec7c25aec9.zip | |
ixgbe: use atomic bitwise operations when handling reset requests
Use atomic bitwise operations when setting and checking reset
requests. This should help with possible races in the service task.
Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| -rw-r--r-- | drivers/net/ethernet/intel/ixgbe/ixgbe.h | 2 | ||||
| -rw-r--r-- | drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 16 |
2 files changed, 8 insertions, 10 deletions
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe.h b/drivers/net/ethernet/intel/ixgbe/ixgbe.h index 9475ff9055aa..5628e2dae427 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe.h +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe.h @@ -653,7 +653,6 @@ struct ixgbe_adapter { #define IXGBE_FLAG2_TEMP_SENSOR_EVENT BIT(3) #define IXGBE_FLAG2_SEARCH_FOR_SFP BIT(4) #define IXGBE_FLAG2_SFP_NEEDS_RESET BIT(5) -#define IXGBE_FLAG2_RESET_REQUESTED BIT(6) #define IXGBE_FLAG2_FDIR_REQUIRES_REINIT BIT(7) #define IXGBE_FLAG2_RSS_FIELD_IPV4_UDP BIT(8) #define IXGBE_FLAG2_RSS_FIELD_IPV6_UDP BIT(9) @@ -840,6 +839,7 @@ enum ixgbe_state_t { __IXGBE_IN_SFP_INIT, __IXGBE_PTP_RUNNING, __IXGBE_PTP_TX_IN_PROGRESS, + __IXGBE_RESET_REQUESTED, }; struct ixgbe_cb { diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c index bbbc5b836923..6bf131faa65e 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c @@ -1103,7 +1103,7 @@ static void ixgbe_tx_timeout_reset(struct ixgbe_adapter *adapter) /* Do the reset outside of interrupt context */ if (!test_bit(__IXGBE_DOWN, &adapter->state)) { - adapter->flags2 |= IXGBE_FLAG2_RESET_REQUESTED; + set_bit(__IXGBE_RESET_REQUESTED, &adapter->state); e_warn(drv, "initiating reset due to tx timeout\n"); ixgbe_service_event_schedule(adapter); } @@ -2777,7 +2777,7 @@ static irqreturn_t ixgbe_msix_other(int irq, void *data) } if (eicr & IXGBE_EICR_ECC) { e_info(link, "Received ECC Err, initiating reset\n"); - adapter->flags2 |= IXGBE_FLAG2_RESET_REQUESTED; + set_bit(__IXGBE_RESET_REQUESTED, &adapter->state); ixgbe_service_event_schedule(adapter); IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_ECC); } @@ -3007,7 +3007,7 @@ static irqreturn_t ixgbe_intr(int irq, void *data) case ixgbe_mac_x550em_a: if (eicr & IXGBE_EICR_ECC) { e_info(link, "Received ECC Err, initiating reset\n"); - adapter->flags2 |= IXGBE_FLAG2_RESET_REQUESTED; + set_bit(__IXGBE_RESET_REQUESTED, &adapter->state); ixgbe_service_event_schedule(adapter); IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_ECC); } @@ -5500,8 +5500,8 @@ void ixgbe_down(struct ixgbe_adapter *adapter) ixgbe_napi_disable_all(adapter); - adapter->flags2 &= ~(IXGBE_FLAG2_FDIR_REQUIRES_REINIT | - IXGBE_FLAG2_RESET_REQUESTED); + clear_bit(__IXGBE_RESET_REQUESTED, &adapter->state); + adapter->flags2 &= ~IXGBE_FLAG2_FDIR_REQUIRES_REINIT; adapter->flags &= ~IXGBE_FLAG_NEED_LINK_UPDATE; del_timer_sync(&adapter->service_timer); @@ -6921,7 +6921,7 @@ static void ixgbe_watchdog_flush_tx(struct ixgbe_adapter *adapter) * (Do the reset outside of interrupt context). */ e_warn(drv, "initiating reset to clear Tx work after link loss\n"); - adapter->flags2 |= IXGBE_FLAG2_RESET_REQUESTED; + set_bit(__IXGBE_RESET_REQUESTED, &adapter->state); } } } @@ -7187,11 +7187,9 @@ static void ixgbe_phy_interrupt_subtask(struct ixgbe_adapter *adapter) static void ixgbe_reset_subtask(struct ixgbe_adapter *adapter) { - if (!(adapter->flags2 & IXGBE_FLAG2_RESET_REQUESTED)) + if (!test_and_clear_bit(__IXGBE_RESET_REQUESTED, &adapter->state)) return; - adapter->flags2 &= ~IXGBE_FLAG2_RESET_REQUESTED; - /* If we're already down, removing or resetting, just bail */ if (test_bit(__IXGBE_DOWN, &adapter->state) || test_bit(__IXGBE_REMOVING, &adapter->state) || |