git: f132be9bac5f - main - netgraph: Enable support for EIM NAT

The branch main has been updated by thj:

URL: https://cgit.FreeBSD.org/src/commit/?id=f132be9bac5f29e844e8dde4f3a70f4c3c158221

commit f132be9bac5f29e844e8dde4f3a70f4c3c158221
Author:     Damjan Jovanovic <damjan.jov@gmail.com>
AuthorDate: 2024-12-06 09:31:58 +0000
Commit:     Tom Jones <thj@FreeBSD.org>
CommitDate: 2024-12-06 09:31:58 +0000

    netgraph: Enable support for EIM NAT
    
    Enable support for endpoint-independent mapping ("full cone NAT") via
    Libalias's UDP NAT.
    
    Reviewed by:    igoro, thj
    Differential Revision:  https://reviews.freebsd.org/D46689
---
 share/man/man4/ng_nat.4 | 3 ++-
 sys/netgraph/ng_nat.c   | 2 ++
 sys/netgraph/ng_nat.h   | 1 +
 3 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/share/man/man4/ng_nat.4 b/share/man/man4/ng_nat.4
index bf9ec4052733..20042db7a1af 100644
--- a/share/man/man4/ng_nat.4
+++ b/share/man/man4/ng_nat.4
@@ -22,7 +22,7 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.Dd January 24, 2021
+.Dd December 6, 2024
 .Dt NG_NAT 4
 .Os
 .Sh NAME
@@ -74,6 +74,7 @@ struct ng_nat_mode {
 #define NG_NAT_PROXY_ONLY		0x40
 #define NG_NAT_REVERSE			0x80
 #define NG_NAT_UNREGISTERED_CGN		0x100
+#define NG_NAT_UDP_EIM			0x200
 .Ed
 .Pp
 The corresponding libalias flags can be found by replacing the
diff --git a/sys/netgraph/ng_nat.c b/sys/netgraph/ng_nat.c
index e9de0e5b60c8..defbe817becd 100644
--- a/sys/netgraph/ng_nat.c
+++ b/sys/netgraph/ng_nat.c
@@ -967,6 +967,8 @@ ng_nat_translate_flags(unsigned int x)
 		res |= PKT_ALIAS_REVERSE;
 	if (x & NG_NAT_UNREGISTERED_CGN)
 		res |= PKT_ALIAS_UNREGISTERED_CGN;
+	if (x & NG_NAT_UDP_EIM)
+		res |= PKT_ALIAS_UDP_EIM;
 
 	return (res);
 }
diff --git a/sys/netgraph/ng_nat.h b/sys/netgraph/ng_nat.h
index 73f09459a84c..9b092b7749f0 100644
--- a/sys/netgraph/ng_nat.h
+++ b/sys/netgraph/ng_nat.h
@@ -53,6 +53,7 @@ struct ng_nat_mode {
 #define NG_NAT_PROXY_ONLY		0x40
 #define NG_NAT_REVERSE			0x80
 #define NG_NAT_UNREGISTERED_CGN		0x100
+#define NG_NAT_UDP_EIM			0x200
 
 #define NG_NAT_DESC_LENGTH	64
 #define NG_NAT_REDIRPROTO_ADDR	(IPPROTO_MAX + 3) 	/* LibAlias' LINK_ADDR, also unused in in.h */