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io_uring/zcrx: rename ZCRX_NOTIF_NO_BUFFERS

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ZCRX_NOTIF_NO_BUFFERS tells when page pool fails to allocate memory from
zcrx. "No buffers" could be more confusing, rename it to
ZCRX_NOTIF_ALLOC_FAIL.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://patch.msgid.link/29bd4fc069bc89691868beba0627ffbe570c2722.1784726895.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov 2026-07-22 14:42:16 +01:00 committed by Jens Axboe
parent af78c00204
commit 201e308102
3 changed files with 3 additions and 3 deletions
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2
include/uapi/linux/io_uring/zcrx.h
View File

@ -69,7 +69,7 @@ enum zcrx_features {
};
enum zcrx_notification_type {
ZCRX_NOTIF_NO_BUFFERS,
ZCRX_NOTIF_ALLOC_FAIL,
ZCRX_NOTIF_COPY,
__ZCRX_NOTIF_TYPE_LAST,

2
io_uring/zcrx.c
View File

@ -1244,7 +1244,7 @@ static netmem_ref io_pp_zc_alloc_netmems(struct page_pool *pp, gfp_t gfp)
allocated = io_zcrx_refill_slow(pp, ifq, netmems, to_alloc);
if (!allocated) {
zcrx_send_notif(ifq, ZCRX_NOTIF_NO_BUFFERS);
zcrx_send_notif(ifq, ZCRX_NOTIF_ALLOC_FAIL);
return 0;
}
out_return:

2
io_uring/zcrx.h
View File

@ -11,7 +11,7 @@
#define ZCRX_SUPPORTED_REG_FLAGS (ZCRX_REG_IMPORT | ZCRX_REG_NODEV)
#define ZCRX_FEATURES (ZCRX_FEATURE_RX_PAGE_SIZE |\
ZCRX_FEATURE_NOTIFICATION)
#define ZCRX_NOTIF_TYPE_MASK ((1U << ZCRX_NOTIF_NO_BUFFERS) | (1U << ZCRX_NOTIF_COPY))
#define ZCRX_NOTIF_TYPE_MASK ((1U << ZCRX_NOTIF_ALLOC_FAIL) | (1U << ZCRX_NOTIF_COPY))
struct io_zcrx_mem {
unsigned long size;