Date: Sat, 10 Feb 2007 22:09:03 +0000 From: Bruce M Simpson <bms@incunabulum.net> To: Pavlin Radoslavov <pavlin@icir.org>, Bill Fenner <fenner@research.att.com> Cc: net@FreeBSD.org Subject: [PATCH] Make INET6 MROUTING dynamically loadable in GENERIC Message-ID: <45CE427F.7070308@incunabulum.net>
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[-- Attachment #1 --]
Hi,
This should do what it says on the tin...
Regards,
BMS
[-- Attachment #2 --]
Make IPv6 multicast forwarding dynamically loadable into a GENERIC kernel.
Index: conf/files
===================================================================
RCS file: /home/ncvs/src/sys/conf/files,v
retrieving revision 1.1175
diff -u -p -r1.1175 files
--- conf/files 7 Feb 2007 18:55:29 -0000 1.1175
+++ conf/files 10 Feb 2007 22:07:19 -0000
@@ -1759,6 +1759,7 @@ netinet/ip_icmp.c optional inet
netinet/ip_input.c optional inet
netinet/ip_ipsec.c optional ipsec
netinet/ip_ipsec.c optional fast_ipsec
+netinet/ip_mroute.c optional inet | inet6
netinet/ip_mroute.c optional mrouting
netinet/ip_options.c optional inet
netinet/ip_output.c optional inet
@@ -1814,7 +1815,7 @@ netinet6/in6_src.c optional inet6
netinet6/ip6_forward.c optional inet6
netinet6/ip6_id.c optional inet6
netinet6/ip6_input.c optional inet6
-netinet6/ip6_mroute.c optional inet6
+netinet6/ip6_mroute.c optional mrouting inet6
netinet6/ip6_output.c optional inet6
netinet6/ipcomp_core.c optional ipsec
netinet6/ipcomp_input.c optional ipsec
Index: modules/ip_mroute_mod/Makefile
===================================================================
RCS file: /home/ncvs/src/sys/modules/ip_mroute_mod/Makefile,v
retrieving revision 1.14
diff -u -p -r1.14 Makefile
--- modules/ip_mroute_mod/Makefile 9 Feb 2007 01:42:43 -0000 1.14
+++ modules/ip_mroute_mod/Makefile 10 Feb 2007 22:07:19 -0000
@@ -1,13 +1,21 @@
# $FreeBSD: src/sys/modules/ip_mroute_mod/Makefile,v 1.14 2007/02/09 01:42:43 bms Exp $
-.PATH: ${.CURDIR}/../../netinet
+.PATH: ${.CURDIR}/../../netinet ${.CURDIR}/../../netinet6
KMOD= ip_mroute
-SRCS= ip_mroute.c opt_mac.h opt_mrouting.h
+SRCS= ip_mroute.c
+SRCS+= ip6_mroute.c
+SRCS+= opt_inet.h opt_inet6.h opt_mac.h opt_mrouting.h
.if !defined(KERNBUILDDIR)
+opt_inet.h:
+ echo "#define INET 1" > ${.TARGET}
+
+opt_inet6.h:
+ echo "#define INET6 1" > ${.TARGET}
+
opt_mrouting.h:
- echo "#define MROUTING 1" > ${.TARGET}
+ echo "#define MROUTING 1" > ${.TARGET}
.endif
.include <bsd.kmod.mk>
Index: netinet/ip_mroute.c
===================================================================
RCS file: /home/ncvs/src/sys/netinet/ip_mroute.c,v
retrieving revision 1.128
diff -u -p -r1.128 ip_mroute.c
--- netinet/ip_mroute.c 10 Feb 2007 14:48:42 -0000 1.128
+++ netinet/ip_mroute.c 10 Feb 2007 22:07:20 -0000
@@ -55,6 +55,8 @@
* $FreeBSD: src/sys/netinet/ip_mroute.c,v 1.128 2007/02/10 14:48:42 bms Exp $
*/
+#include "opt_inet.h"
+#include "opt_inet6.h"
#include "opt_mac.h"
#include "opt_mrouting.h"
@@ -217,6 +219,12 @@ struct protosw in_pim_protosw = {
.pr_usrreqs = &rip_usrreqs
};
static const struct encaptab *pim_encap_cookie;
+
+#ifdef INET6
+extern struct protosw in6_pim_protosw; /* ip6_mroute.c: struct in6_protosw */
+static const struct encaptab *pim6_encap_cookie;
+#endif
+
static int pim_encapcheck(const struct mbuf *, int, int, void *);
/*
@@ -2737,7 +2745,7 @@ pim_register_send_rp(struct ip *ip, stru
}
/*
- * pim_encapcheck() is called by the encap4_input() path at runtime to
+ * pim_encapcheck() is called by the encap[46]_input() path at runtime to
* determine if a packet is for PIM; allowing PIM to be dynamically loaded
* into the kernel.
*/
@@ -2995,6 +3003,10 @@ pim_input_to_daemon:
return;
}
+/*
+ * XXX: This is common code for dealing with initialization for both
+ * the IPv4 and IPv6 multicast forwarding paths. It could do with cleanup.
+ */
static int
ip_mroute_modevent(module_t mod, int type, void *unused)
{
@@ -3006,6 +3018,7 @@ ip_mroute_modevent(module_t mod, int typ
ip_mrouter_reset();
TUNABLE_ULONG_FETCH("net.inet.pim.squelch_wholepkt",
&pim_squelch_wholepkt);
+
pim_encap_cookie = encap_attach_func(AF_INET, IPPROTO_PIM,
pim_encapcheck, &in_pim_protosw, NULL);
if (pim_encap_cookie == NULL) {
@@ -3015,6 +3028,23 @@ ip_mroute_modevent(module_t mod, int typ
mtx_destroy(&mrouter_mtx);
return (EINVAL);
}
+
+#ifdef INET6
+ pim6_encap_cookie = encap_attach_func(AF_INET6, IPPROTO_PIM,
+ pim_encapcheck, &in6_pim_protosw, NULL);
+ if (pim6_encap_cookie == NULL) {
+ printf("ip_mroute: unable to attach pim6 encap\n");
+ if (pim_encap_cookie) {
+ encap_detach(pim_encap_cookie);
+ pim_encap_cookie = NULL;
+ }
+ VIF_LOCK_DESTROY();
+ MFC_LOCK_DESTROY();
+ mtx_destroy(&mrouter_mtx);
+ return (EINVAL);
+ }
+#endif
+
ip_mcast_src = X_ip_mcast_src;
ip_mforward = X_ip_mforward;
ip_mrouter_done = X_ip_mrouter_done;
@@ -3039,6 +3069,12 @@ ip_mroute_modevent(module_t mod, int typ
if (ip_mrouter)
return EINVAL;
+#ifdef INET6
+ if (pim6_encap_cookie) {
+ encap_detach(pim6_encap_cookie);
+ pim6_encap_cookie = NULL;
+ }
+#endif
if (pim_encap_cookie) {
encap_detach(pim_encap_cookie);
pim_encap_cookie = NULL;
Index: netinet6/in6_proto.c
===================================================================
RCS file: /home/ncvs/src/sys/netinet6/in6_proto.c,v
retrieving revision 1.40
diff -u -p -r1.40 in6_proto.c
--- netinet6/in6_proto.c 3 Nov 2006 15:23:15 -0000 1.40
+++ netinet6/in6_proto.c 10 Feb 2007 22:07:21 -0000
@@ -335,7 +335,7 @@ struct ip6protosw inet6sw[] = {
.pr_domain = &inet6domain,
.pr_protocol = IPPROTO_PIM,
.pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
- .pr_input = pim6_input,
+ .pr_input = encap6_input,
.pr_output = rip6_output,
.pr_ctloutput = rip6_ctloutput,
.pr_usrreqs = &rip6_usrreqs
Index: netinet6/ip6_mroute.c
===================================================================
RCS file: /home/ncvs/src/sys/netinet6/ip6_mroute.c,v
retrieving revision 1.39
diff -u -p -r1.39 ip6_mroute.c
--- netinet6/ip6_mroute.c 12 Dec 2006 12:17:57 -0000 1.39
+++ netinet6/ip6_mroute.c 10 Feb 2007 22:07:22 -0000
@@ -114,6 +114,7 @@
#include <netinet6/scope6_var.h>
#include <netinet6/nd6.h>
#include <netinet6/ip6_mroute.h>
+#include <netinet6/ip6protosw.h>
#include <netinet6/pim6.h>
#include <netinet6/pim6_var.h>
@@ -130,6 +131,18 @@ static int socket_send __P((struct socke
static int register_send __P((struct ip6_hdr *, struct mif6 *,
struct mbuf *));
+extern struct domain inetdomain;
+struct ip6protosw in6_pim_protosw = {
+ .pr_type = SOCK_RAW,
+ .pr_domain = &inetdomain,
+ .pr_protocol = IPPROTO_PIM,
+ .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
+ .pr_input = pim6_input,
+ .pr_output = rip6_output,
+ .pr_ctloutput = rip6_ctloutput,
+ .pr_usrreqs = &rip6_usrreqs
+};
+
/*
* Globals. All but ip6_mrouter, ip6_mrtproto and mrt6stat could be static,
* except for netstat or debugging purposes.
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