diff options
| -rw-r--r-- | net/qrtr/ns.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/net/qrtr/ns.c b/net/qrtr/ns.c index 1b9a90240a68..c0418764470b 100644 --- a/net/qrtr/ns.c +++ b/net/qrtr/ns.c @@ -71,12 +71,16 @@ struct qrtr_node { u32 server_count; }; -/* Max server, lookup limits are chosen based on the current platform requirements. - * If the requirement changes in the future, these values can be increased. +/* Max nodes, server, lookup limits are chosen based on the current platform + * requirements. If the requirement changes in the future, these values can be + * increased. */ +#define QRTR_NS_MAX_NODES 64 #define QRTR_NS_MAX_SERVERS 256 #define QRTR_NS_MAX_LOOKUPS 64 +static u8 node_count; + static struct qrtr_node *node_get(unsigned int node_id) { struct qrtr_node *node; @@ -85,6 +89,11 @@ static struct qrtr_node *node_get(unsigned int node_id) if (node) return node; + if (node_count >= QRTR_NS_MAX_NODES) { + pr_err_ratelimited("QRTR clients exceed max node limit!\n"); + return NULL; + } + /* If node didn't exist, allocate and insert it to the tree */ node = kzalloc_obj(*node); if (!node) @@ -98,6 +107,8 @@ static struct qrtr_node *node_get(unsigned int node_id) return NULL; } + node_count++; + return node; } @@ -404,6 +415,7 @@ static int ctrl_cmd_bye(struct sockaddr_qrtr *from) delete_node: xa_erase(&nodes, from->sq_node); kfree(node); + node_count--; return ret; } |