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authorLinus Lüssing <linus.luessing@c0d3.blue>2019-01-21 09:26:27 +0300
committerDavid S. Miller <davem@davemloft.net>2019-01-23 04:18:08 +0300
commit4effd28c1245303dce7fd290c501ac2c11052114 (patch)
tree93942c9d3f41fc3e58de6ce99fbc03319ddaa17e /include/uapi/linux/in.h
parenta2e2ca3bebe273055a212d754ffe4e0264192d74 (diff)
downloadlinux-4effd28c1245303dce7fd290c501ac2c11052114.tar.xz
bridge: join all-snoopers multicast address
Next to snooping IGMP/MLD queries RFC4541, section 2.1.1.a) recommends to snoop multicast router advertisements to detect multicast routers. Multicast router advertisements are sent to an "all-snoopers" multicast address. To be able to receive them reliably, we need to join this group. Otherwise other snooping switches might refrain from forwarding these advertisements to us. Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/uapi/linux/in.h')
-rw-r--r--include/uapi/linux/in.h9
1 files changed, 5 insertions, 4 deletions
diff --git a/include/uapi/linux/in.h b/include/uapi/linux/in.h
index a55cb8b10165..e7ad9d350a28 100644
--- a/include/uapi/linux/in.h
+++ b/include/uapi/linux/in.h
@@ -292,10 +292,11 @@ struct sockaddr_in {
#define IN_LOOPBACK(a) ((((long int) (a)) & 0xff000000) == 0x7f000000)
/* Defines for Multicast INADDR */
-#define INADDR_UNSPEC_GROUP 0xe0000000U /* 224.0.0.0 */
-#define INADDR_ALLHOSTS_GROUP 0xe0000001U /* 224.0.0.1 */
-#define INADDR_ALLRTRS_GROUP 0xe0000002U /* 224.0.0.2 */
-#define INADDR_MAX_LOCAL_GROUP 0xe00000ffU /* 224.0.0.255 */
+#define INADDR_UNSPEC_GROUP 0xe0000000U /* 224.0.0.0 */
+#define INADDR_ALLHOSTS_GROUP 0xe0000001U /* 224.0.0.1 */
+#define INADDR_ALLRTRS_GROUP 0xe0000002U /* 224.0.0.2 */
+#define INADDR_ALLSNOOPERS_GROUP 0xe000006aU /* 224.0.0.106 */
+#define INADDR_MAX_LOCAL_GROUP 0xe00000ffU /* 224.0.0.255 */
#endif
/* <asm/byteorder.h> contains the htonl type stuff.. */