diff options
| author | Pavel Begunkov <asml.silence@gmail.com> | 2026-08-07 14:19:28 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2026-08-15 17:29:57 -0600 |
| commit | eb840beb51bb17da87968f3b8359183bde11be22 (patch) | |
| tree | 6472189b348a625d77ee0fe0aae752d77c3177bf /io_uring | |
| parent | 84a7fc9b1862dfe9e2e743ca6627d311a5e03545 (diff) | |
io_uring/zcrx: don't pass ifq_reg to area creation
We might want to create an area without having an instance of struct
io_uring_zcrx_ifq_reg. Extract a helper that doesn't have the ifq
registration structure as an argument but takes the buf length
explicitly.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://patch.msgid.link/76751ee4747abb4893058fcaaa36895dfe24a297.1786108672.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'io_uring')
| -rw-r--r-- | io_uring/zcrx.c | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/io_uring/zcrx.c b/io_uring/zcrx.c index db529736bdab..8914869ed29a 100644 --- a/io_uring/zcrx.c +++ b/io_uring/zcrx.c @@ -459,21 +459,22 @@ static int io_zcrx_append_area(struct io_zcrx_ifq *ifq, return 0; } -static int io_zcrx_create_area(struct io_zcrx_ifq *ifq, +static int __zcrx_create_area(struct io_zcrx_ifq *ifq, struct io_uring_zcrx_area_reg *area_reg, - struct io_uring_zcrx_ifq_reg *reg) + u32 rx_buf_len) { int buf_size_shift = PAGE_SHIFT; struct io_zcrx_area *area; unsigned nr_iovs; int i, ret; - if (reg->rx_buf_len) { - if (!is_power_of_2(reg->rx_buf_len) || - reg->rx_buf_len < PAGE_SIZE) + if (rx_buf_len) { + if (!is_power_of_2(rx_buf_len) || rx_buf_len < PAGE_SIZE) return -EINVAL; - buf_size_shift = ilog2(reg->rx_buf_len); + buf_size_shift = ilog2(rx_buf_len); } + if (WARN_ON_ONCE(ifq->niov_shift)) + return -EINVAL; if (!ifq->dev && buf_size_shift != PAGE_SHIFT) return -EOPNOTSUPP; @@ -543,6 +544,13 @@ err: return ret; } +static int io_zcrx_create_area(struct io_zcrx_ifq *ifq, + struct io_uring_zcrx_area_reg *area_reg, + struct io_uring_zcrx_ifq_reg *reg) +{ + return __zcrx_create_area(ifq, area_reg, reg->rx_buf_len); +} + static struct io_zcrx_ifq *io_zcrx_ifq_alloc(struct io_ring_ctx *ctx) { struct io_zcrx_ifq *ifq; |