diff options
| author | David Wei <dw@davidwei.uk> | 2025-11-13 10:46:17 +0000 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2025-11-13 11:19:37 -0700 |
| commit | 0926f94ab36a6d76d07fa8f0934e65f5f66647ec (patch) | |
| tree | 92545667162a4d820b0e13b31c5c2f49f761e0b3 | |
| parent | d7af80b213e5675664b14f12240cb282e81773d5 (diff) | |
io_uring/zcrx: add io_fill_zcrx_offsets()
Add a helper io_fill_zcrx_offsets() that sets the constant offsets in
struct io_uring_zcrx_offsets returned to userspace.
Signed-off-by: David Wei <dw@davidwei.uk>
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
| -rw-r--r-- | io_uring/zcrx.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/io_uring/zcrx.c b/io_uring/zcrx.c index 815992aff246..da7e556c349e 100644 --- a/io_uring/zcrx.c +++ b/io_uring/zcrx.c @@ -345,6 +345,13 @@ static void io_zcrx_get_niov_uref(struct net_iov *niov) atomic_inc(io_get_user_counter(niov)); } +static void io_fill_zcrx_offsets(struct io_uring_zcrx_offsets *offsets) +{ + offsets->head = offsetof(struct io_uring, head); + offsets->tail = offsetof(struct io_uring, tail); + offsets->rqes = ALIGN(sizeof(struct io_uring), L1_CACHE_BYTES); +} + static int io_allocate_rbuf_ring(struct io_ring_ctx *ctx, struct io_zcrx_ifq *ifq, struct io_uring_zcrx_ifq_reg *reg, @@ -356,7 +363,8 @@ static int io_allocate_rbuf_ring(struct io_ring_ctx *ctx, void *ptr; int ret; - off = ALIGN(sizeof(struct io_uring), L1_CACHE_BYTES); + io_fill_zcrx_offsets(®->offsets); + off = reg->offsets.rqes; size = off + sizeof(struct io_uring_zcrx_rqe) * reg->rq_entries; if (size > rd->size) return -EINVAL; @@ -372,9 +380,6 @@ static int io_allocate_rbuf_ring(struct io_ring_ctx *ctx, ifq->rq_ring = (struct io_uring *)ptr; ifq->rqes = (struct io_uring_zcrx_rqe *)(ptr + off); - reg->offsets.head = offsetof(struct io_uring, head); - reg->offsets.tail = offsetof(struct io_uring, tail); - reg->offsets.rqes = off; return 0; } |