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nvmf/rdma: Factor out getting lkey and checking length in fill_wr_sge() into get_lkey()

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Factor out getting lkey and checking translation length in
nvmf_rdma_fill_wr_sge() into a function nvmf_rdma_get_lkey().

Signed-off-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Change-Id: I495ba9ae4a48b4aa7dc35a0bd72708753846dfdc
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/469349
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Seth Howell <seth.howell@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Alexey Marchuk <alexeymar@mellanox.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
This commit is contained in:
Shuhei Matsumoto 2019-09-25 08:15:42 +09:00 committed by Jim Harris
parent 5e8858d7a3
commit 5dbe96a053
1 changed files with 21 additions and 7 deletions
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28
lib/nvmf/rdma.c
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@ -1619,24 +1619,38 @@ nvmf_rdma_fill_buffers_with_md_interleave(struct spdk_nvmf_rdma_transport *rtran
}
static bool
nvmf_rdma_fill_wr_sge(struct spdk_nvmf_rdma_device *device,
struct spdk_nvmf_request *req, struct ibv_send_wr *wr)
nvmf_rdma_get_lkey(struct spdk_nvmf_rdma_device *device, struct iovec *iov,
uint32_t *_lkey)
{
uint64_t translation_len;
struct iovec *iov = &req->iov[req->iovcnt];
struct ibv_sge *sg_ele = &wr->sg_list[wr->num_sge];
uint32_t lkey;
translation_len = iov->iov_len;
if (!g_nvmf_hooks.get_rkey) {
sg_ele->lkey = ((struct ibv_mr *)spdk_mem_map_translate(device->map,
lkey = ((struct ibv_mr *)spdk_mem_map_translate(device->map,
(uint64_t)iov->iov_base, &translation_len))->lkey;
} else {
sg_ele->lkey = spdk_mem_map_translate(device->map,
(uint64_t)iov->iov_base, &translation_len);
lkey = spdk_mem_map_translate(device->map,
(uint64_t)iov->iov_base, &translation_len);
}
if (spdk_unlikely(translation_len < iov->iov_len)) {
return false;
}
*_lkey = lkey;
return true;
}
static bool
nvmf_rdma_fill_wr_sge(struct spdk_nvmf_rdma_device *device,
struct spdk_nvmf_request *req, struct ibv_send_wr *wr)
{
struct iovec *iov = &req->iov[req->iovcnt];
struct ibv_sge *sg_ele = &wr->sg_list[wr->num_sge];
if (spdk_unlikely(!nvmf_rdma_get_lkey(device, iov, &sg_ele->lkey))) {
/* This is a very rare case that can occur when using DPDK version < 19.05 */
SPDK_ERRLOG("Data buffer split over multiple RDMA Memory Regions. Removing it from circulation.\n");
return false;