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authorSagi Grimberg <sagi@lightbitslabs.com>2018-12-04 04:52:13 +0300
committerChristoph Hellwig <hch@lst.de>2018-12-13 11:58:56 +0300
commit20d44e86321299f61bb782a39aaa30f579823f58 (patch)
tree3949c9449a568956a805eb0efca207459daef863 /drivers/nvme/host
parent3b49fa807284ec30669a95fd5f3806e127d29f4d (diff)
downloadlinux-20d44e86321299f61bb782a39aaa30f579823f58.tar.xz
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>
Diffstat (limited to 'drivers/nvme/host')
-rw-r--r--drivers/nvme/host/fabrics.c5
-rw-r--r--drivers/nvme/host/fabrics.h2
2 files changed, 7 insertions, 0 deletions
diff --git a/drivers/nvme/host/fabrics.c b/drivers/nvme/host/fabrics.c
index 4272f8a95db3..9c62c6838b76 100644
--- a/drivers/nvme/host/fabrics.c
+++ b/drivers/nvme/host/fabrics.c
@@ -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);
diff --git a/drivers/nvme/host/fabrics.h b/drivers/nvme/host/fabrics.h
index a6127f1a9e8e..524a02a67817 100644
--- a/drivers/nvme/host/fabrics.h
+++ b/drivers/nvme/host/fabrics.h
@@ -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;
};
/*