From: Martin Willi <martin@revosec.ch>
Date: Tue, 15 Jul 2014 13:11:14 +0000 (+0200)
Subject: kernel-netlink: Add a compile-time hook to simulate request message loss
X-Git-Tag: 5.2.2dr1~35^2~9
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=553be051b73755d3171dc38552e2beb2669793b0;p=thirdparty%2Fstrongswan.git

kernel-netlink: Add a compile-time hook to simulate request message loss
---

diff --git a/src/libhydra/plugins/kernel_netlink/kernel_netlink_shared.c b/src/libhydra/plugins/kernel_netlink/kernel_netlink_shared.c
index 8f49e03d1c..2875436c6b 100644
--- a/src/libhydra/plugins/kernel_netlink/kernel_netlink_shared.c
+++ b/src/libhydra/plugins/kernel_netlink/kernel_netlink_shared.c
@@ -77,6 +77,16 @@ struct private_netlink_socket_t {
 	u_int retries;
 };
 
+/**
+ * #definable hook to simulate request message loss
+ */
+#ifdef NETLINK_MSG_LOSS_HOOK
+bool NETLINK_MSG_LOSS_HOOK(struct nlmsghdr *msg);
+#define msg_loss_hook(msg) NETLINK_MSG_LOSS_HOOK(msg)
+#else
+#define msg_loss_hook(msg) FALSE
+#endif
+
 /**
  * Request entry the answer for a waiting thread is collected in
  */
@@ -109,6 +119,11 @@ static bool write_msg(private_netlink_socket_t *this, struct nlmsghdr *msg)
 	};
 	int len;
 
+	if (msg_loss_hook(msg))
+	{
+		return TRUE;
+	}
+
 	while (TRUE)
 	{
 		len = sendto(this->socket, msg, msg->nlmsg_len, 0,