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authorSagi Grimberg <sagi@lightbitslabs.com>2018-12-04 02:52:12 +0100
committerChristoph Hellwig <hch@lst.de>2018-12-13 09:58:56 +0100
commit3b49fa807284ec30669a95fd5f3806e127d29f4d (patch)
treee3b20261631a548a82bfd6f398428d037a5ae5aa
parentnvmet: Add install_queue callout (diff)
downloadlinux-3b49fa807284ec30669a95fd5f3806e127d29f4d.tar.xz
linux-3b49fa807284ec30669a95fd5f3806e127d29f4d.zip
nvme-fabrics: allow user passing header digest
Header 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>
-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 10074ac7731b..4272f8a95db3 100644
--- a/drivers/nvme/host/fabrics.c
+++ b/drivers/nvme/host/fabrics.c
@@ -614,6 +614,7 @@ static const match_table_t opt_tokens = {
{ NVMF_OPT_HOST_ID, "hostid=%s" },
{ NVMF_OPT_DUP_CONNECT, "duplicate_connect" },
{ NVMF_OPT_DISABLE_SQFLOW, "disable_sqflow" },
+ { NVMF_OPT_HDR_DIGEST, "hdr_digest" },
{ NVMF_OPT_ERR, NULL }
};
@@ -633,6 +634,7 @@ static int nvmf_parse_options(struct nvmf_ctrl_options *opts,
opts->reconnect_delay = NVMF_DEF_RECONNECT_DELAY;
opts->kato = NVME_DEFAULT_KATO;
opts->duplicate_connect = false;
+ opts->hdr_digest = false;
options = o = kstrdup(buf, GFP_KERNEL);
if (!options)
@@ -827,6 +829,9 @@ static int nvmf_parse_options(struct nvmf_ctrl_options *opts,
case NVMF_OPT_DISABLE_SQFLOW:
opts->disable_sqflow = true;
break;
+ case NVMF_OPT_HDR_DIGEST:
+ opts->hdr_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 ecd9a006a091..a6127f1a9e8e 100644
--- a/drivers/nvme/host/fabrics.h
+++ b/drivers/nvme/host/fabrics.h
@@ -59,6 +59,7 @@ enum {
NVMF_OPT_HOST_ID = 1 << 12,
NVMF_OPT_DUP_CONNECT = 1 << 13,
NVMF_OPT_DISABLE_SQFLOW = 1 << 14,
+ NVMF_OPT_HDR_DIGEST = 1 << 15,
};
/**
@@ -103,6 +104,7 @@ struct nvmf_ctrl_options {
struct nvmf_host *host;
int max_reconnects;
bool disable_sqflow;
+ bool hdr_digest;
};
/*