diff options
Diffstat (limited to 'net/xdp/xsk_queue.h')
-rw-r--r-- | net/xdp/xsk_queue.h | 58 |
1 files changed, 27 insertions, 31 deletions
diff --git a/net/xdp/xsk_queue.h b/net/xdp/xsk_queue.h index 7ad80748f209..1b9a350f2e66 100644 --- a/net/xdp/xsk_queue.h +++ b/net/xdp/xsk_queue.h @@ -216,22 +216,17 @@ static inline void xskq_discard_addr(struct xsk_queue *q) q->cons_tail++; } -static inline int xskq_produce_addr(struct xsk_queue *q, u64 addr) +static inline int xskq_prod_reserve(struct xsk_queue *q) { - struct xdp_umem_ring *ring = (struct xdp_umem_ring *)q->ring; - unsigned int idx = q->ring->producer; + if (xskq_nb_free(q, 1) == 0) + return -ENOSPC; /* A, matches D */ - ring->desc[idx++ & q->ring_mask] = addr; - - /* Order producer and data */ - smp_wmb(); /* B, matches C */ - - WRITE_ONCE(q->ring->producer, idx); + q->cached_prod++; return 0; } -static inline int xskq_produce_addr_lazy(struct xsk_queue *q, u64 addr) +static inline int xskq_prod_reserve_addr(struct xsk_queue *q, u64 addr) { struct xdp_umem_ring *ring = (struct xdp_umem_ring *)q->ring; @@ -243,23 +238,32 @@ static inline int xskq_produce_addr_lazy(struct xsk_queue *q, u64 addr) return 0; } -static inline void xskq_produce_flush_addr_n(struct xsk_queue *q, - u32 nb_entries) +static inline void __xskq_prod_submit(struct xsk_queue *q, u32 idx) { /* Order producer and data */ smp_wmb(); /* B, matches C */ - WRITE_ONCE(q->ring->producer, q->ring->producer + nb_entries); + WRITE_ONCE(q->ring->producer, idx); } -static inline int xskq_reserve_addr(struct xsk_queue *q) +static inline void xskq_prod_submit(struct xsk_queue *q) { - if (xskq_nb_free(q, 1) == 0) - return -ENOSPC; + __xskq_prod_submit(q, q->cached_prod); +} - /* A, matches D */ - q->cached_prod++; - return 0; +static inline void xskq_prod_submit_addr(struct xsk_queue *q, u64 addr) +{ + struct xdp_umem_ring *ring = (struct xdp_umem_ring *)q->ring; + u32 idx = q->ring->producer; + + ring->desc[idx++ & q->ring_mask] = addr; + + __xskq_prod_submit(q, idx); +} + +static inline void xskq_prod_submit_n(struct xsk_queue *q, u32 nb_entries) +{ + __xskq_prod_submit(q, q->ring->producer + nb_entries); } /* Rx/Tx queue */ @@ -330,11 +334,11 @@ static inline void xskq_discard_desc(struct xsk_queue *q) q->cons_tail++; } -static inline int xskq_produce_batch_desc(struct xsk_queue *q, - u64 addr, u32 len) +static inline int xskq_prod_reserve_desc(struct xsk_queue *q, + u64 addr, u32 len) { struct xdp_rxtx_ring *ring = (struct xdp_rxtx_ring *)q->ring; - unsigned int idx; + u32 idx; if (xskq_nb_free(q, 1) == 0) return -ENOSPC; @@ -347,14 +351,6 @@ static inline int xskq_produce_batch_desc(struct xsk_queue *q, return 0; } -static inline void xskq_produce_flush_desc(struct xsk_queue *q) -{ - /* Order producer and data */ - smp_wmb(); /* B, matches C */ - - WRITE_ONCE(q->ring->producer, q->cached_prod); -} - static inline bool xskq_full_desc(struct xsk_queue *q) { /* No barriers needed since data is not accessed */ @@ -362,7 +358,7 @@ static inline bool xskq_full_desc(struct xsk_queue *q) q->nentries; } -static inline bool xskq_empty_desc(struct xsk_queue *q) +static inline bool xskq_prod_is_empty(struct xsk_queue *q) { /* No barriers needed since data is not accessed */ return READ_ONCE(q->ring->consumer) == READ_ONCE(q->ring->producer); |