From fa9402f28a0b2a81e769b545d6e080dc6b724b77 Mon Sep 17 00:00:00 2001
From: Robert Watson <rwatson@FreeBSD.org>
Date: Wed, 8 Oct 2008 06:19:49 +0000
Subject: [PATCH] Differentiate pr_usrreqs for stream and datagram UNIX domain
 sockets, and employ soreceive_dgram for the datagram case.

MFC after:	3 months
---
 sys/kern/uipc_usrreq.c | 29 +++++++++++++++++++++++++----
 1 file changed, 25 insertions(+), 4 deletions(-)

diff --git a/sys/kern/uipc_usrreq.c b/sys/kern/uipc_usrreq.c
index f92f54e22ec..5b0bfdedf9d 100644
--- a/sys/kern/uipc_usrreq.c
+++ b/sys/kern/uipc_usrreq.c
@@ -249,20 +249,20 @@ static struct mbuf	*unp_addsockcred(struct thread *, struct mbuf *);
  * Definitions of protocols supported in the LOCAL domain.
  */
 static struct domain localdomain;
-static struct pr_usrreqs uipc_usrreqs;
+static struct pr_usrreqs uipc_usrreqs_dgram, uipc_usrreqs_stream;
 static struct protosw localsw[] = {
 {
 	.pr_type =		SOCK_STREAM,
 	.pr_domain =		&localdomain,
 	.pr_flags =		PR_CONNREQUIRED|PR_WANTRCVD|PR_RIGHTS,
 	.pr_ctloutput =		&uipc_ctloutput,
-	.pr_usrreqs =		&uipc_usrreqs
+	.pr_usrreqs =		&uipc_usrreqs_stream
 },
 {
 	.pr_type =		SOCK_DGRAM,
 	.pr_domain =		&localdomain,
 	.pr_flags =		PR_ATOMIC|PR_ADDR|PR_RIGHTS,
-	.pr_usrreqs =		&uipc_usrreqs
+	.pr_usrreqs =		&uipc_usrreqs_dgram
 },
 };
 
@@ -996,7 +996,7 @@ uipc_sockaddr(struct socket *so, struct sockaddr **nam)
 	return (0);
 }
 
-static struct pr_usrreqs uipc_usrreqs = {
+static struct pr_usrreqs uipc_usrreqs_dgram = {
 	.pru_abort = 		uipc_abort,
 	.pru_accept =		uipc_accept,
 	.pru_attach =		uipc_attach,
@@ -1012,6 +1012,27 @@ static struct pr_usrreqs uipc_usrreqs = {
 	.pru_sense =		uipc_sense,
 	.pru_shutdown =		uipc_shutdown,
 	.pru_sockaddr =		uipc_sockaddr,
+	.pru_soreceive =	soreceive_dgram,
+	.pru_close =		uipc_close,
+};
+
+static struct pr_usrreqs uipc_usrreqs_stream = {
+	.pru_abort = 		uipc_abort,
+	.pru_accept =		uipc_accept,
+	.pru_attach =		uipc_attach,
+	.pru_bind =		uipc_bind,
+	.pru_connect =		uipc_connect,
+	.pru_connect2 =		uipc_connect2,
+	.pru_detach =		uipc_detach,
+	.pru_disconnect =	uipc_disconnect,
+	.pru_listen =		uipc_listen,
+	.pru_peeraddr =		uipc_peeraddr,
+	.pru_rcvd =		uipc_rcvd,
+	.pru_send =		uipc_send,
+	.pru_sense =		uipc_sense,
+	.pru_shutdown =		uipc_shutdown,
+	.pru_sockaddr =		uipc_sockaddr,
+	.pru_soreceive =	soreceive_generic,
 	.pru_close =		uipc_close,
 };