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nvmf/vfio-user: move map_one()

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This lets us use it more widely.

Signed-off-by: John Levon <john.levon@nutanix.com>
Change-Id: I9c67be19020677fab3eafe05c1e0f91c3d04611d
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/12307
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Community-CI: Mellanox Build Bot
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
This commit is contained in:
John Levon 2022-04-19 15:46:39 +01:00 committed by Tomasz Zawadzki
parent 31db7b139b
commit c20e41cd38
1 changed files with 27 additions and 23 deletions
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50
lib/nvmf/vfio_user.c
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@ -561,6 +561,33 @@ self_kick(struct nvmf_vfio_user_ctrlr *ctrlr)
ctrlr);
}
/*
* Make the given DMA address and length available (locally mapped) via iov.
*/
static void *
map_one(vfu_ctx_t *ctx, uint64_t addr, uint64_t len, dma_sg_t *sg,
struct iovec *iov, int prot)
{
int ret;
assert(ctx != NULL);
assert(sg != NULL);
assert(iov != NULL);
ret = vfu_addr_to_sg(ctx, (void *)(uintptr_t)addr, len, sg, 1, prot);
if (ret < 0) {
return NULL;
}
ret = vfu_map_sg(ctx, sg, iov, 1, 0);
if (ret != 0) {
return NULL;
}
assert(iov->iov_base != NULL);
return iov->iov_base;
}
static int
nvme_cmd_map_prps(void *prv, struct spdk_nvme_cmd *cmd, struct iovec *iovs,
uint32_t max_iovcnt, uint32_t len, size_t mps,
@ -968,29 +995,6 @@ max_queue_size(struct nvmf_vfio_user_ctrlr const *vu_ctrlr)
return vu_ctrlr->ctrlr->vcprop.cap.bits.mqes + 1;
}
static void *
map_one(vfu_ctx_t *ctx, uint64_t addr, uint64_t len, dma_sg_t *sg, struct iovec *iov, int prot)
{
int ret;
assert(ctx != NULL);
assert(sg != NULL);
assert(iov != NULL);
ret = vfu_addr_to_sg(ctx, (void *)(uintptr_t)addr, len, sg, 1, prot);
if (ret < 0) {
return NULL;
}
ret = vfu_map_sg(ctx, sg, iov, 1, 0);
if (ret != 0) {
return NULL;
}
assert(iov->iov_base != NULL);
return iov->iov_base;
}
static int
map_q(struct nvmf_vfio_user_ctrlr *vu_ctrlr, struct nvme_q_mapping *mapping,
uint32_t q_size, bool is_cq, bool unmap)