diff options
| -rw-r--r-- | include/uapi/linux/io_uring.h | 8 | ||||
| -rw-r--r-- | include/uapi/linux/io_uring/query.h | 3 | ||||
| -rw-r--r-- | io_uring/query.c | 2 |
3 files changed, 11 insertions, 2 deletions
diff --git a/include/uapi/linux/io_uring.h b/include/uapi/linux/io_uring.h index da5156954731..c462bdf3c42c 100644 --- a/include/uapi/linux/io_uring.h +++ b/include/uapi/linux/io_uring.h @@ -1090,6 +1090,14 @@ enum zcrx_reg_flags { ZCRX_REG_IMPORT = 1, }; +enum zcrx_features { + /* + * The user can ask for the desired rx page size by passing the + * value in struct io_uring_zcrx_ifq_reg::rx_buf_len. + */ + ZCRX_FEATURE_RX_PAGE_SIZE = 1 << 0, +}; + /* * Argument for IORING_REGISTER_ZCRX_IFQ */ diff --git a/include/uapi/linux/io_uring/query.h b/include/uapi/linux/io_uring/query.h index 2456e6c5ebb5..0b6248175e26 100644 --- a/include/uapi/linux/io_uring/query.h +++ b/include/uapi/linux/io_uring/query.h @@ -50,7 +50,8 @@ struct io_uring_query_zcrx { __u64 area_flags; /* The number of supported ZCRX_CTRL_* opcodes */ __u32 nr_ctrl_opcodes; - __u32 __resv1; + /* Bitmask of ZCRX_FEATURE_* indicating which features are available */ + __u32 features; /* The refill ring header size */ __u32 rq_hdr_size; /* The alignment for the header */ diff --git a/io_uring/query.c b/io_uring/query.c index abdd6f3e1223..63cc30c9803d 100644 --- a/io_uring/query.c +++ b/io_uring/query.c @@ -39,7 +39,7 @@ static ssize_t io_query_zcrx(union io_query_data *data) e->nr_ctrl_opcodes = __ZCRX_CTRL_LAST; e->rq_hdr_size = sizeof(struct io_uring); e->rq_hdr_alignment = L1_CACHE_BYTES; - e->__resv1 = 0; + e->features = ZCRX_FEATURE_RX_PAGE_SIZE; e->__resv2 = 0; return sizeof(*e); } |