diff options
Diffstat (limited to 'drivers/net/ethernet/intel/ixgbe/ixgbe.h')
| -rw-r--r-- | drivers/net/ethernet/intel/ixgbe/ixgbe.h | 48 |
1 files changed, 36 insertions, 12 deletions
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe.h b/drivers/net/ethernet/intel/ixgbe/ixgbe.h index dc1588ee264a..f51fd1f4fb49 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe.h +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe.h @@ -369,11 +369,13 @@ struct ixgbe_q_vector { #ifdef CONFIG_NET_RX_BUSY_POLL unsigned int state; #define IXGBE_QV_STATE_IDLE 0 -#define IXGBE_QV_STATE_NAPI 1 /* NAPI owns this QV */ -#define IXGBE_QV_STATE_POLL 2 /* poll owns this QV */ -#define IXGBE_QV_LOCKED (IXGBE_QV_STATE_NAPI | IXGBE_QV_STATE_POLL) -#define IXGBE_QV_STATE_NAPI_YIELD 4 /* NAPI yielded this QV */ -#define IXGBE_QV_STATE_POLL_YIELD 8 /* poll yielded this QV */ +#define IXGBE_QV_STATE_NAPI 1 /* NAPI owns this QV */ +#define IXGBE_QV_STATE_POLL 2 /* poll owns this QV */ +#define IXGBE_QV_STATE_DISABLED 4 /* QV is disabled */ +#define IXGBE_QV_OWNED (IXGBE_QV_STATE_NAPI | IXGBE_QV_STATE_POLL) +#define IXGBE_QV_LOCKED (IXGBE_QV_OWNED | IXGBE_QV_STATE_DISABLED) +#define IXGBE_QV_STATE_NAPI_YIELD 8 /* NAPI yielded this QV */ +#define IXGBE_QV_STATE_POLL_YIELD 16 /* poll yielded this QV */ #define IXGBE_QV_YIELD (IXGBE_QV_STATE_NAPI_YIELD | IXGBE_QV_STATE_POLL_YIELD) #define IXGBE_QV_USER_PEND (IXGBE_QV_STATE_POLL | IXGBE_QV_STATE_POLL_YIELD) spinlock_t lock; @@ -394,7 +396,7 @@ static inline void ixgbe_qv_init_lock(struct ixgbe_q_vector *q_vector) static inline bool ixgbe_qv_lock_napi(struct ixgbe_q_vector *q_vector) { int rc = true; - spin_lock(&q_vector->lock); + spin_lock_bh(&q_vector->lock); if (q_vector->state & IXGBE_QV_LOCKED) { WARN_ON(q_vector->state & IXGBE_QV_STATE_NAPI); q_vector->state |= IXGBE_QV_STATE_NAPI_YIELD; @@ -405,7 +407,7 @@ static inline bool ixgbe_qv_lock_napi(struct ixgbe_q_vector *q_vector) } else /* we don't care if someone yielded */ q_vector->state = IXGBE_QV_STATE_NAPI; - spin_unlock(&q_vector->lock); + spin_unlock_bh(&q_vector->lock); return rc; } @@ -413,14 +415,15 @@ static inline bool ixgbe_qv_lock_napi(struct ixgbe_q_vector *q_vector) static inline bool ixgbe_qv_unlock_napi(struct ixgbe_q_vector *q_vector) { int rc = false; - spin_lock(&q_vector->lock); + spin_lock_bh(&q_vector->lock); WARN_ON(q_vector->state & (IXGBE_QV_STATE_POLL | IXGBE_QV_STATE_NAPI_YIELD)); if (q_vector->state & IXGBE_QV_STATE_POLL_YIELD) rc = true; - q_vector->state = IXGBE_QV_STATE_IDLE; - spin_unlock(&q_vector->lock); + /* will reset state to idle, unless QV is disabled */ + q_vector->state &= IXGBE_QV_STATE_DISABLED; + spin_unlock_bh(&q_vector->lock); return rc; } @@ -451,7 +454,8 @@ static inline bool ixgbe_qv_unlock_poll(struct ixgbe_q_vector *q_vector) if (q_vector->state & IXGBE_QV_STATE_POLL_YIELD) rc = true; - q_vector->state = IXGBE_QV_STATE_IDLE; + /* will reset state to idle, unless QV is disabled */ + q_vector->state &= IXGBE_QV_STATE_DISABLED; spin_unlock_bh(&q_vector->lock); return rc; } @@ -459,9 +463,23 @@ static inline bool ixgbe_qv_unlock_poll(struct ixgbe_q_vector *q_vector) /* true if a socket is polling, even if it did not get the lock */ static inline bool ixgbe_qv_busy_polling(struct ixgbe_q_vector *q_vector) { - WARN_ON(!(q_vector->state & IXGBE_QV_LOCKED)); + WARN_ON(!(q_vector->state & IXGBE_QV_OWNED)); return q_vector->state & IXGBE_QV_USER_PEND; } + +/* false if QV is currently owned */ +static inline bool ixgbe_qv_disable(struct ixgbe_q_vector *q_vector) +{ + int rc = true; + spin_lock_bh(&q_vector->lock); + if (q_vector->state & IXGBE_QV_OWNED) + rc = false; + q_vector->state |= IXGBE_QV_STATE_DISABLED; + spin_unlock_bh(&q_vector->lock); + + return rc; +} + #else /* CONFIG_NET_RX_BUSY_POLL */ static inline void ixgbe_qv_init_lock(struct ixgbe_q_vector *q_vector) { @@ -491,6 +509,12 @@ static inline bool ixgbe_qv_busy_polling(struct ixgbe_q_vector *q_vector) { return false; } + +static inline bool ixgbe_qv_disable(struct ixgbe_q_vector *q_vector) +{ + return true; +} + #endif /* CONFIG_NET_RX_BUSY_POLL */ #ifdef CONFIG_IXGBE_HWMON |