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nvme-fabrics: allow user passing data digest 

Data digest is a nvme-tcp specific feature, but nothing prevents other
transports reusing the concept so do not associate with tcp transport
solely.

Signed-off-by: Sagi Grimberg <sagi@lightbitslabs.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Sagi Grimberg 2018-12-03 17:52:13 -08:00 committed by Christoph Hellwig
parent 3b49fa8072
commit 20d44e8632
2 changed files with 7 additions and 0 deletions
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5
drivers/nvme/host/fabrics.c
View File

@ -615,6 +615,7 @@ static const match_table_t opt_tokens = {
{ NVMF_OPT_DUP_CONNECT, "duplicate_connect" },
{ NVMF_OPT_DISABLE_SQFLOW, "disable_sqflow" },
{ NVMF_OPT_HDR_DIGEST, "hdr_digest" },
{ NVMF_OPT_DATA_DIGEST, "data_digest" },
{ NVMF_OPT_ERR, NULL }
};
@ -635,6 +636,7 @@ static int nvmf_parse_options(struct nvmf_ctrl_options *opts,
opts->kato = NVME_DEFAULT_KATO;
opts->duplicate_connect = false;
opts->hdr_digest = false;
opts->data_digest = false;
options = o = kstrdup(buf, GFP_KERNEL);
if (!options)
@ -832,6 +834,9 @@ static int nvmf_parse_options(struct nvmf_ctrl_options *opts,
case NVMF_OPT_HDR_DIGEST:
opts->hdr_digest = true;
break;
case NVMF_OPT_DATA_DIGEST:
opts->data_digest = true;
break;
default:
pr_warn("unknown parameter or missing value '%s' in ctrl creation request\n",
p);

2
drivers/nvme/host/fabrics.h
View File

@ -60,6 +60,7 @@ enum {
NVMF_OPT_DUP_CONNECT = 1 << 13,
NVMF_OPT_DISABLE_SQFLOW = 1 << 14,
NVMF_OPT_HDR_DIGEST = 1 << 15,
NVMF_OPT_DATA_DIGEST = 1 << 16,
};
/**
@ -105,6 +106,7 @@ struct nvmf_ctrl_options {
int max_reconnects;
bool disable_sqflow;
bool hdr_digest;
bool data_digest;
};
/*