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tipc: add 128-bit node identifier

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We add a 128-bit node identity, as an alternative to the currently used
32-bit node address.

For the sake of compatibility and to minimize message header changes
we retain the existing 32-bit address field. When not set explicitly by
the user, this field will be filled with a hash value generated from the
much longer node identity, and be used as a shorthand value for the
latter.

We permit either the address or the identity to be set by configuration,
but not both, so when the address value is set by a legacy user the
corresponding 128-bit node identity is generated based on the that value.

Acked-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jon Maloy 2018-03-22 20:42:50 +01:00 • committed by David S. Miller
parent 23fd3eace0
commit d50ccc2d39
12 changed files with 148 additions and 56 deletions
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2
include/uapi/linux/tipc_netlink.h
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@ -169,6 +169,8 @@ enum {
TIPC_NLA_NET_UNSPEC,
TIPC_NLA_NET_ID, /* u32 */
TIPC_NLA_NET_ADDR, /* u32 */
TIPC_NLA_NET_NODEID, /* u64 */
TIPC_NLA_NET_NODEID_W1, /* u64 */
__TIPC_NLA_NET_MAX,
TIPC_NLA_NET_MAX = __TIPC_NLA_NET_MAX - 1