[PATCH 6.1 308/609] net: qrtr: ns: Raise node count limit to 512

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Youssef Samir <[email protected]>

[ Upstream commit ff194cffd586cbd4cc49eccb002c65f2a902a277 ]

The current node limit of 64 breaks the functionality for a number of AI200
deployments that have up to 384 nodes. Raise the limit to 512.

Also, the backport of commit 27d5e84e810b ("net: qrtr: ns: Limit the total
number of nodes") to 5.10, 5.15 and 6.1 dropped the node_count-- hunk in
ctrl_cmd_bye(). Add it back.

Fixes: 27d5e84e810b ("net: qrtr: ns: Limit the total number of nodes")
Cc: [email protected]
Signed-off-by: Youssef Samir <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
Signed-off-by: Youssef Samir <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>
---
 net/qrtr/ns.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/net/qrtr/ns.c b/net/qrtr/ns.c
index 91e43b0fd5669..5220529a4c62d 100644
--- a/net/qrtr/ns.c
+++ b/net/qrtr/ns.c
@@ -75,11 +75,11 @@ struct qrtr_node {
  * requirements. If the requirement changes in the future, these values can be
  * increased.
  */
-#define QRTR_NS_MAX_NODES   64
+#define QRTR_NS_MAX_NODES   512
 #define QRTR_NS_MAX_SERVERS 256
 #define QRTR_NS_MAX_LOOKUPS 64
 
-static u8 node_count;
+static u16 node_count;
 
 static struct qrtr_node *node_get(unsigned int node_id)
 {
@@ -412,6 +412,7 @@ static int ctrl_cmd_bye(struct sockaddr_qrtr *from)
 delete_node:
 	xa_erase(&nodes, from->sq_node);
 	kfree(node);
+	node_count--;
 
 	return ret;
 }
-- 
2.53.0