kernel-netlink: Allow Netlink send buffer size to be configured via compile option

The receive buffer size can already be changed via strongswan.conf if
necessary.

diff --git a/src/libhydra/plugins/kernel_netlink/kernel_netlink_shared.h b/src/libhydra/plugins/kernel_netlink/kernel_netlink_shared.h
index 66682907d9536b5ee0fbfb9bf45d38d667616bb6..b034326d7c2b9023e1e5c05dd97ec90828cb9739 100644 (file)
--- a/src/libhydra/plugins/kernel_netlink/kernel_netlink_shared.h
+++ b/src/libhydra/plugins/kernel_netlink/kernel_netlink_shared.h
@@ -20,15 +20,23 @@
 
 #include <linux/rtnetlink.h>
 
+/**
+ * Default buffer size.
+ *
+ * 1024 byte is currently sufficient for all operations.
+ */
+#ifndef KERNEL_NETLINK_BUFSIZE
+#define KERNEL_NETLINK_BUFSIZE 1024
+#endif
+
 /**
  * General purpose netlink buffer.
  *
- * 1024 byte is currently sufficient for all operations. Some platform
- * require an enforced aligment to four bytes (e.g. ARM).
+ * Some platforms require an enforced aligment to four bytes (e.g. ARM).
  */
 typedef union {
        struct nlmsghdr hdr;
-       u_char bytes[1024];
+       u_char bytes[KERNEL_NETLINK_BUFSIZE];
 } netlink_buf_t __attribute__((aligned(RTA_ALIGNTO)));
 
 typedef struct netlink_socket_t netlink_socket_t;