netdev - [RFC PATCH v6 03/27] nvme-fabrics: Expose nvmf_check_required

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Date:   Fri, 28 May 2021 02:58:38 +0300
From:   Shai Malin <smalin@...vell.com>
To:     <netdev@...r.kernel.org>, <linux-nvme@...ts.infradead.org>,
        <davem@...emloft.net>, <kuba@...nel.org>, <sagi@...mberg.me>,
        <hch@....de>, <axboe@...com>, <kbusch@...nel.org>
CC:     <aelior@...vell.com>, <mkalderon@...vell.com>,
        <okulkarni@...vell.com>, <pkushwaha@...vell.com>,
        <malin1024@...il.com>, <smalin@...vell.com>
Subject: [RFC PATCH v6 03/27] nvme-fabrics: Expose nvmf_check_required_opts() globally

From: Prabhakar Kushwaha <pkushwaha@...vell.com>

nvmf_check_required_opts() is used to check if user provided opts has
the required_opts or not. if not, it will log which options are not
provided.

It can be leveraged by nvme-tcp-offload to check if provided opts are
supported by this specific vendor driver or not.

So expose nvmf_check_required_opts() globally.

Acked-by: Igor Russkikh <irusskikh@...vell.com>
Signed-off-by: Prabhakar Kushwaha <pkushwaha@...vell.com>
Signed-off-by: Omkar Kulkarni <okulkarni@...vell.com>
Signed-off-by: Michal Kalderon <mkalderon@...vell.com>
Signed-off-by: Ariel Elior <aelior@...vell.com>
Signed-off-by: Shai Malin <smalin@...vell.com>
---
 drivers/nvme/host/fabrics.c | 5 +++--
 drivers/nvme/host/fabrics.h | 2 ++
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/nvme/host/fabrics.c b/drivers/nvme/host/fabrics.c
index e1e05aa2fada..ceb263eb50fb 100644
--- a/drivers/nvme/host/fabrics.c
+++ b/drivers/nvme/host/fabrics.c
@@ -860,8 +860,8 @@ static int nvmf_parse_options(struct nvmf_ctrl_options *opts,
 	return ret;
 }
 
-static int nvmf_check_required_opts(struct nvmf_ctrl_options *opts,
-		unsigned int required_opts)
+int nvmf_check_required_opts(struct nvmf_ctrl_options *opts,
+			     unsigned int required_opts)
 {
 	if ((opts->mask & required_opts) != required_opts) {
 		int i;
@@ -879,6 +879,7 @@ static int nvmf_check_required_opts(struct nvmf_ctrl_options *opts,
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(nvmf_check_required_opts);
 
 bool nvmf_ip_options_match(struct nvme_ctrl *ctrl,
 		struct nvmf_ctrl_options *opts)
diff --git a/drivers/nvme/host/fabrics.h b/drivers/nvme/host/fabrics.h
index ce7fe3a842b1..8399fcc063ef 100644
--- a/drivers/nvme/host/fabrics.h
+++ b/drivers/nvme/host/fabrics.h
@@ -193,5 +193,7 @@ int nvmf_get_address(struct nvme_ctrl *ctrl, char *buf, int size);
 bool nvmf_should_reconnect(struct nvme_ctrl *ctrl);
 bool nvmf_ip_options_match(struct nvme_ctrl *ctrl,
 		struct nvmf_ctrl_options *opts);
+int nvmf_check_required_opts(struct nvmf_ctrl_options *opts,
+			     unsigned int required_opts);
 
 #endif /* _NVME_FABRICS_H */
-- 
2.22.0