From 1d9453641769e4c78d93415b177a1aa0d20d557f Mon Sep 17 00:00:00 2001
From: Ben Walker <benjamin.walker@intel.com>
Date: Wed, 18 Apr 2018 14:28:38 -0700
Subject: [PATCH] nvmf: Bound the maximum number of namespaces that can be
 configured

Make the bound enormous, but bound it so that we don't run out
of memory.

Change-Id: I014b3df3be92ae8bd85fea95f514225adc3eefe2
Signed-off-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-on: https://review.gerrithub.io/408247
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
---
 lib/event/subsystems/nvmf/conf.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/event/subsystems/nvmf/conf.c b/lib/event/subsystems/nvmf/conf.c
index 678b5fcd4..ca53e0a5c 100644
--- a/lib/event/subsystems/nvmf/conf.c
+++ b/lib/event/subsystems/nvmf/conf.c
@@ -43,6 +43,8 @@
 
 #define ACCEPT_TIMEOUT_US		10000 /* 10ms */
 
+#define SPDK_NVMF_MAX_NAMESPACES (1 << 14)
+
 struct spdk_nvmf_tgt_conf g_spdk_nvmf_tgt_conf;
 
 static int
@@ -162,6 +164,8 @@ spdk_nvmf_parse_subsystem(struct spdk_conf_section *sp)
 
 	if (num_ns < 1) {
 		num_ns = 0;
+	} else if (num_ns > SPDK_NVMF_MAX_NAMESPACES) {
+		num_ns = SPDK_NVMF_MAX_NAMESPACES;
 	}
 
 	/* Mode is no longer a valid parameter, but print out a nice