Rename C++ header files to .hpp

[lttng-tools.git] / src / common / sessiond-comm / inet.hpp

diff --git a/src/common/sessiond-comm/inet.hpp b/src/common/sessiond-comm/inet.hpp
new file mode 100644 (file)
index 0000000..dca1cc1
--- /dev/null
+++ b/src/common/sessiond-comm/inet.hpp
@@ -0,0 +1,56 @@
+/*
+ * Copyright (C) 2012 David Goulet <dgoulet@efficios.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0-only
+ *
+ */
+
+#ifndef _LTTCOMM_INET_H
+#define _LTTCOMM_INET_H
+
+#include <limits.h>
+
+#include "sessiond-comm.hpp"
+
+/* See man tcp(7) for more detail about this value. */
+#define LTTCOMM_INET_PROC_SYN_RETRIES_PATH "/proc/sys/net/ipv4/tcp_syn_retries"
+#define LTTCOMM_INET_PROC_FIN_TIMEOUT_PATH "/proc/sys/net/ipv4/tcp_fin_timeout"
+
+/*
+ * The timeout value of a connect() is computed with an algorithm inside the
+ * kernel using the defined TCP SYN retries so the end value in time is
+ * approximative. According to tcp(7) man page, a value of 5 is roughly 180
+ * seconds of timeout. With that information, we've computed a factor of 36
+ * (180/5) by considering that it grows linearly. This is of course uncertain
+ * but this is the best approximation we can do at runtime.
+ */
+#define LTTCOMM_INET_SYN_TIMEOUT_FACTOR                36
+
+/*
+ * Maximum timeout value in seconds of a TCP connection for both send/recv and
+ * connect operations.
+ */
+LTTNG_EXPORT extern unsigned long lttcomm_inet_tcp_timeout;
+
+/* Stub */
+struct lttcomm_sock;
+
+/* Net family callback */
+extern int lttcomm_create_inet_sock(struct lttcomm_sock *sock, int type,
+               int proto);
+
+extern struct lttcomm_sock *lttcomm_accept_inet_sock(struct lttcomm_sock *sock);
+extern int lttcomm_bind_inet_sock(struct lttcomm_sock *sock);
+extern int lttcomm_close_inet_sock(struct lttcomm_sock *sock);
+extern int lttcomm_connect_inet_sock(struct lttcomm_sock *sock);
+extern int lttcomm_listen_inet_sock(struct lttcomm_sock *sock, int backlog);
+
+extern ssize_t lttcomm_recvmsg_inet_sock(struct lttcomm_sock *sock, void *buf,
+               size_t len, int flags);
+extern ssize_t lttcomm_sendmsg_inet_sock(struct lttcomm_sock *sock,
+               const void *buf, size_t len, int flags);
+
+/* Initialize inet communication layer. */
+extern void lttcomm_inet_init(void);
+
+#endif /* _LTTCOMM_INET_H */