[syslog] Add support for sending console output to a syslog server

Originally-implemented-by: Anselm Martin Hoffmeister <anselm@hoffmeister.be>
Signed-off-by: Michael Brown <mcb30@ipxe.org>

src/include/ipxe/syslog.h

@@ -0,0 +1,36 @@
+#ifndef _IPXE_SYSLOG_H
+#define _IPXE_SYSLOG_H
+
+/** @file
+ *
+ * Syslog protocol
+ *
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+/** Syslog server port */
+#define SYSLOG_PORT 514
+
+/** Syslog line buffer size
+ *
+ * This is a policy decision
+ */
+#define SYSLOG_BUFSIZE 128
+
+/** Syslog facility
+ *
+ * This is a policy decision
+ */
+#define SYSLOG_FACILITY 0 /* kernel */
+
+/** Syslog severity
+ *
+ * This is a policy decision
+ */
+#define SYSLOG_SEVERITY 6 /* informational */
+
+/** Syslog priority */
+#define SYSLOG_PRIORITY( facility, severity ) ( 8 * (facility) + (severity) )
+
+#endif /* _IPXE_SYSLOG_H */