Author: jhb
Date: Fri Feb 1 15:32:20 2013
New Revision: 246210
URL: http://svnweb.freebsd.org/changeset/base/246210
Log:
Add placeholder constants to reserve a portion of the socket option
name space for use by downstream vendors to add custom options.
MFC after: 2 weeks
Modified:
head/sys/netinet/tcp.h
head/sys/netinet/udp.h
head/sys/sys/socket.h
head/sys/sys/un.h
Modified: head/sys/netinet/tcp.h
==============================================================================
--- head/sys/netinet/tcp.h Fri Feb 1 14:26:54 2013 (r246209)
+++ head/sys/netinet/tcp.h Fri Feb 1 15:32:20 2013 (r246210)
@@ -166,6 +166,9 @@ struct tcphdr {
#define TCP_KEEPINTVL 512 /* L,N interval between keepalives */
#define TCP_KEEPCNT 1024 /* L,N number of keepalives before
close */
+/* Start of reserved space for third-party user-settable options. */
+#define TCP_VENDOR SO_VENDOR
+
#define TCP_CA_NAME_MAX 16 /* max congestion control name length */
#define TCPI_OPT_TIMESTAMPS 0x01
Modified: head/sys/netinet/udp.h
==============================================================================
--- head/sys/netinet/udp.h Fri Feb 1 14:26:54 2013 (r246209)
+++ head/sys/netinet/udp.h Fri Feb 1 15:32:20 2013 (r246210)
@@ -50,6 +50,8 @@ struct udphdr {
*/
#define UDP_ENCAP 1
+/* Start of reserved space for third-party user-settable options. */
+#define UDP_VENDOR SO_VENDOR
/*
* UDP Encapsulation of IPsec Packets options.
Modified: head/sys/sys/socket.h
==============================================================================
--- head/sys/sys/socket.h Fri Feb 1 14:26:54 2013 (r246209)
+++ head/sys/sys/socket.h Fri Feb 1 15:32:20 2013 (r246210)
@@ -143,6 +143,15 @@ typedef __uid_t uid_t;
#endif
/*
+ * Space reserved for new socket options added by third-party vendors.
+ * This range applies to all socket option levels. New socket options
+ * in FreeBSD should always use an option value less than SO_VENDOR.
+ */
+#if __BSD_VISIBLE
+#define SO_VENDOR 0x80000000
+#endif
+
+/*
* Structure used for manipulating linger option.
*/
struct linger {
Modified: head/sys/sys/un.h
==============================================================================
--- head/sys/sys/un.h Fri Feb 1 14:26:54 2013 (r246209)
+++ head/sys/sys/un.h Fri Feb 1 15:32:20 2013 (r246210)
@@ -57,6 +57,9 @@ struct sockaddr_un {
#define LOCAL_CREDS 2 /* pass credentials to receiver
*/
#define LOCAL_CONNWAIT 4 /* connects block until
accepted */
+/* Start of reserved space for third-party socket options. */
+#define LOCAL_VENDOR SO_VENDOR
+
#ifndef _KERNEL
/* actual length of an initialized sockaddr_un */
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