diff options
Diffstat (limited to 'usr/src/cmd/bhyve/block_if.h')
| -rw-r--r-- | usr/src/cmd/bhyve/block_if.h | 25 |
1 files changed, 18 insertions, 7 deletions
diff --git a/usr/src/cmd/bhyve/block_if.h b/usr/src/cmd/bhyve/block_if.h index 5ef120933c..bff2b42768 100644 --- a/usr/src/cmd/bhyve/block_if.h +++ b/usr/src/cmd/bhyve/block_if.h @@ -1,4 +1,6 @@ /*- + * SPDX-License-Identifier: BSD-2-Clause-FreeBSD + * * Copyright (c) 2013 Peter Grehan <grehan@freebsd.org> * All rights reserved. * @@ -23,7 +25,7 @@ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * - * $FreeBSD: head/usr.sbin/bhyve/block_if.h 268638 2014-07-15 00:25:54Z grehan $ + * $FreeBSD$ */ /* @@ -39,18 +41,21 @@ #include <sys/uio.h> #include <sys/unistd.h> -#ifdef __FreeBSD__ -#define BLOCKIF_IOV_MAX 32 /* not practical to be IOV_MAX */ -#else -#define BLOCKIF_IOV_MAX 16 /* not practical to be IOV_MAX */ -#endif +/* + * BLOCKIF_IOV_MAX is the maximum number of scatter/gather entries in + * a single request. BLOCKIF_RING_MAX is the maxmimum number of + * pending requests that can be queued. + */ +#define BLOCKIF_IOV_MAX 128 /* not practical to be IOV_MAX */ +#define BLOCKIF_RING_MAX 128 struct blockif_req { - struct iovec br_iov[BLOCKIF_IOV_MAX]; int br_iovcnt; off_t br_offset; + ssize_t br_resid; void (*br_callback)(struct blockif_req *req, int err); void *br_param; + struct iovec br_iov[BLOCKIF_IOV_MAX]; }; struct blockif_ctxt; @@ -59,11 +64,17 @@ off_t blockif_size(struct blockif_ctxt *bc); void blockif_chs(struct blockif_ctxt *bc, uint16_t *c, uint8_t *h, uint8_t *s); int blockif_sectsz(struct blockif_ctxt *bc); +void blockif_psectsz(struct blockif_ctxt *bc, int *size, int *off); int blockif_queuesz(struct blockif_ctxt *bc); int blockif_is_ro(struct blockif_ctxt *bc); +int blockif_candelete(struct blockif_ctxt *bc); +#ifndef __FreeBSD__ +int blockif_set_wce(struct blockif_ctxt *bc, int enable); +#endif int blockif_read(struct blockif_ctxt *bc, struct blockif_req *breq); int blockif_write(struct blockif_ctxt *bc, struct blockif_req *breq); int blockif_flush(struct blockif_ctxt *bc, struct blockif_req *breq); +int blockif_delete(struct blockif_ctxt *bc, struct blockif_req *breq); int blockif_cancel(struct blockif_ctxt *bc, struct blockif_req *breq); int blockif_close(struct blockif_ctxt *bc); |