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vhost: split desc_to_iovs function

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Use the payload to construct iovs so that split desc
or packed desc can both work.

Change-Id: Ib2c60b6eb53d0d615594e97b3d3ae1a365908b6c
Signed-off-by: Jin Yu <jin.yu@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/1000
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
This commit is contained in:
Jin Yu 2020-02-25 18:54:11 +08:00 committed by Tomasz Zawadzki
parent af561c1a4a
commit a8bdd24bc2
1 changed files with 12 additions and 6 deletions
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18
lib/vhost/vhost.c
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@ -468,14 +468,12 @@ vhost_vring_desc_is_wr(struct vring_desc *cur_desc)
return !!(cur_desc->flags & VRING_DESC_F_WRITE);
}
int
vhost_vring_desc_to_iov(struct spdk_vhost_session *vsession, struct iovec *iov,
uint16_t *iov_index, const struct vring_desc *desc)
static int
vhost_vring_desc_payload_to_iov(struct spdk_vhost_session *vsession, struct iovec *iov,
uint16_t *iov_index, uintptr_t payload, uint64_t remaining)
{
uint64_t len;
uint64_t remaining = desc->len;
uintptr_t payload = desc->addr;
uintptr_t vva;
uint64_t len;
do {
if (*iov_index >= SPDK_VHOST_IOVS_MAX) {
@ -498,6 +496,14 @@ vhost_vring_desc_to_iov(struct spdk_vhost_session *vsession, struct iovec *iov,
return 0;
}
int
vhost_vring_desc_to_iov(struct spdk_vhost_session *vsession, struct iovec *iov,
uint16_t *iov_index, const struct vring_desc *desc)
{
return vhost_vring_desc_payload_to_iov(vsession, iov, iov_index,
desc->addr, desc->len);
}
static struct spdk_vhost_session *
vhost_session_find_by_id(struct spdk_vhost_dev *vdev, unsigned id)
{