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nvmet: add error log support in the core

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This patch adds the support to maintain error log page for the
nvmet-core.

Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Chaitanya Kulkarni 2018-12-12 15:11:41 -08:00 committed by Christoph Hellwig
parent 76574f37bf
commit e81446afc7
1 changed files with 23 additions and 8 deletions
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31
drivers/nvme/target/core.c
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@ -51,22 +51,28 @@ static struct nvmet_subsys *nvmet_find_get_subsys(struct nvmet_port *port,
u16 nvmet_copy_to_sgl(struct nvmet_req *req, off_t off, const void *buf,
size_t len)
{
if (sg_pcopy_from_buffer(req->sg, req->sg_cnt, buf, len, off) != len)
if (sg_pcopy_from_buffer(req->sg, req->sg_cnt, buf, len, off) != len) {
req->error_loc = offsetof(struct nvme_common_command, dptr);
return NVME_SC_SGL_INVALID_DATA | NVME_SC_DNR;
}
return 0;
}
u16 nvmet_copy_from_sgl(struct nvmet_req *req, off_t off, void *buf, size_t len)
{
if (sg_pcopy_to_buffer(req->sg, req->sg_cnt, buf, len, off) != len)
if (sg_pcopy_to_buffer(req->sg, req->sg_cnt, buf, len, off) != len) {
req->error_loc = offsetof(struct nvme_common_command, dptr);
return NVME_SC_SGL_INVALID_DATA | NVME_SC_DNR;
}
return 0;
}
u16 nvmet_zero_sgl(struct nvmet_req *req, off_t off, size_t len)
{
if (sg_zero_buffer(req->sg, req->sg_cnt, len, off) != len)
if (sg_zero_buffer(req->sg, req->sg_cnt, len, off) != len) {
req->error_loc = offsetof(struct nvme_common_command, dptr);
return NVME_SC_SGL_INVALID_DATA | NVME_SC_DNR;
}
return 0;
}
@ -769,14 +775,20 @@ static u16 nvmet_parse_io_cmd(struct nvmet_req *req)
return ret;
req->ns = nvmet_find_namespace(req->sq->ctrl, cmd->rw.nsid);
if (unlikely(!req->ns))
if (unlikely(!req->ns)) {
req->error_loc = offsetof(struct nvme_common_command, nsid);
return NVME_SC_INVALID_NS | NVME_SC_DNR;
}
ret = nvmet_check_ana_state(req->port, req->ns);
if (unlikely(ret))
if (unlikely(ret)) {
req->error_loc = offsetof(struct nvme_common_command, nsid);
return ret;
}
ret = nvmet_io_cmd_check_access(req);
if (unlikely(ret))
if (unlikely(ret)) {
req->error_loc = offsetof(struct nvme_common_command, nsid);
return ret;
}
if (req->ns->file)
return nvmet_file_parse_io_cmd(req);
@ -804,6 +816,7 @@ bool nvmet_req_init(struct nvmet_req *req, struct nvmet_cq *cq,
/* no support for fused commands yet */
if (unlikely(flags & (NVME_CMD_FUSE_FIRST | NVME_CMD_FUSE_SECOND))) {
req->error_loc = offsetof(struct nvme_common_command, flags);
status = NVME_SC_INVALID_FIELD | NVME_SC_DNR;
goto fail;
}
@ -814,6 +827,7 @@ bool nvmet_req_init(struct nvmet_req *req, struct nvmet_cq *cq,
* byte aligned.
*/
if (unlikely((flags & NVME_CMD_SGL_ALL) != NVME_CMD_SGL_METABUF)) {
req->error_loc = offsetof(struct nvme_common_command, flags);
status = NVME_SC_INVALID_FIELD | NVME_SC_DNR;
goto fail;
}
@ -859,9 +873,10 @@ EXPORT_SYMBOL_GPL(nvmet_req_uninit);
void nvmet_req_execute(struct nvmet_req *req)
{
if (unlikely(req->data_len != req->transfer_len))
if (unlikely(req->data_len != req->transfer_len)) {
req->error_loc = offsetof(struct nvme_common_command, dptr);
nvmet_req_complete(req, NVME_SC_SGL_INVALID_DATA | NVME_SC_DNR);
else
} else
req->execute(req);
}
EXPORT_SYMBOL_GPL(nvmet_req_execute);