From 9469b3ef201052b821fdb934e69572d4f974a32c Mon Sep 17 00:00:00 2001
From: Paul Luse <paul.e.luse@intel.com>
Date: Wed, 14 Nov 2018 21:57:39 -0700
Subject: [PATCH] bdev/crypto: prevent duplicates from being added to global
 name list

Picked up from recent update to the passthru module.

Change-Id: Ie7404e5aadda6691b15020adbbc1e1f4c23d0a12
Signed-off-by: Paul Luse <paul.e.luse@intel.com>
Reviewed-on: https://review.gerrithub.io/433384 (master)
Reviewed-on: https://review.gerrithub.io/435673
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
---
 lib/bdev/crypto/vbdev_crypto.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/lib/bdev/crypto/vbdev_crypto.c b/lib/bdev/crypto/vbdev_crypto.c
index 807940645..46fc2b102 100644
--- a/lib/bdev/crypto/vbdev_crypto.c
+++ b/lib/bdev/crypto/vbdev_crypto.c
@@ -1116,6 +1116,13 @@ vbdev_crypto_insert_name(const char *bdev_name, const char *vbdev_name,
 	int rc, j;
 	bool found = false;
 
+	TAILQ_FOREACH(name, &g_bdev_names, link) {
+		if (strcmp(vbdev_name, name->vbdev_name) == 0) {
+			SPDK_ERRLOG("crypto bdev %s already exists\n", vbdev_name);
+			return -EEXIST;
+		}
+	}
+
 	name = calloc(1, sizeof(struct bdev_names));
 	if (!name) {
 		SPDK_ERRLOG("could not allocate bdev_names\n");