1 files changed, 101 insertions, 0 deletions
diff --git a/src/include/ipxe/socket.h b/src/include/ipxe/socket.h
new file mode 100644
index 000000000..ea2972a89
--- /dev/null
+++ b/src/include/ipxe/socket.h
@@ -0,0 +1,101 @@
+#ifndef _IPXE_SOCKET_H
+#define _IPXE_SOCKET_H
+
+/** @file
+ *
+ * Socket addresses
+ *
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+#include <stdint.h>
+
+/**
+ * @defgroup commtypes Communication semantics
+ *
+ * @{
+ */
+
+/** Connection-based, reliable streams */
+extern int tcp_sock_stream;
+#define TCP_SOCK_STREAM 0x1
+#define SOCK_STREAM tcp_sock_stream
+
+/** Connectionless, unreliable streams */
+extern int udp_sock_dgram;
+#define UDP_SOCK_DGRAM 0x2
+#define SOCK_DGRAM udp_sock_dgram
+
+/** @} */
+
+/**
+ * Name communication semantics
+ *
+ * @v semantics		Communication semantics (e.g. SOCK_STREAM)
+ * @ret name		Name of communication semantics
+ */
+static inline __attribute__ (( always_inline )) const char *
+socket_semantics_name ( int semantics ) {
+	/* Cannot use a switch() because of the {TCP_UDP}_SOCK_XXX hack */
+	if ( semantics == SOCK_STREAM ) {
+		return "SOCK_STREAM";
+	} else if ( semantics == SOCK_DGRAM ) {
+		return "SOCK_DGRAM";
+	} else {
+		return "SOCK_UNKNOWN";
+	}
+}
+
+/**
+ * @defgroup addrfam Address families
+ *
+ * @{
+ */
+#define AF_INET		1	/**< IPv4 Internet addresses */
+#define AF_INET6	2	/**< IPv6 Internet addresses */
+/** @} */
+
+/**
+ * Name address family
+ *
+ * @v family		Address family (e.g. AF_INET)
+ * @ret name		Name of address family
+ */
+static inline __attribute__ (( always_inline )) const char *
+socket_family_name ( int family ) {
+	switch ( family ) {
+	case AF_INET:		return "AF_INET";
+	case AF_INET6:		return "AF_INET6";
+	default:		return "AF_UNKNOWN";
+	}
+}
+
+/** A socket address family */
+typedef uint16_t sa_family_t;
+
+/** Length of a @c struct @c sockaddr */
+#define SA_LEN 32
+
+/**
+ * Generalized socket address structure
+ *
+ * This contains the fields common to socket addresses for all address
+ * families.
+ */
+struct sockaddr {
+	/** Socket address family
+	 *
+	 * This is an AF_XXX constant.
+	 */
+        sa_family_t sa_family;
+	/** Padding
+	 *
+	 * This ensures that a struct @c sockaddr_tcpip is large
+	 * enough to hold a socket address for any TCP/IP address
+	 * family.
+	 */
+	char pad[ SA_LEN - sizeof ( sa_family_t ) ];
+} __attribute__ (( may_alias ));
+
+#endif /* _IPXE_SOCKET_H */