tipc: add InfiniBand media type

Add InfiniBand media type based on the ethernet media type.

The only real difference is that in case of InfiniBand, we need the entire
20 bytes of space reserved for media addresses, so the TIPC media type ID is
not explicitly stored in the packet payload.

Sample output of tipc-config:

# tipc-config -v -addr -netid -nt=all -p -m -b -n -ls

node address: <10.1.4>
current network id: 4711
Type       Lower      Upper      Port Identity              Publication Scope
0          167776257  167776257  <10.1.1:1855512577>        1855512578  cluster
           167776260  167776260  <10.1.4:1216454657>        1216454658  zone
1          1          1          <10.1.4:1216479235>        1216479236  node
Ports:
1216479235: bound to {1,1}
1216454657: bound to {0,167776260}
Media:
eth
ib
Bearers:
ib:ib0
Nodes known:
<10.1.1>: up
Link <broadcast-link>
  Window:20 packets
  RX packets:0 fragments:0/0 bundles:0/0
  TX packets:0 fragments:0/0 bundles:0/0
  RX naks:0 defs:0 dups:0
  TX naks:0 acks:0 dups:0
  Congestion bearer:0 link:0  Send queue max:0 avg:0

Link <10.1.4:ib0-10.1.1:ib0>
  ACTIVE  MTU:2044  Priority:10  Tolerance:1500 ms  Window:50 packets
  RX packets:80 fragments:0/0 bundles:0/0
  TX packets:40 fragments:0/0 bundles:0/0
  TX profile sample:22 packets  average:54 octets
  0-64:100% -256:0% -1024:0% -4096:0% -16384:0% -32768:0% -66000:0%
  RX states:410 probes:213 naks:0 defs:0 dups:0
  TX states:410 probes:197 naks:0 acks:0 dups:0
  Congestion bearer:0 link:0  Send queue max:1 avg:0

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 7 insertions, 0 deletions

diff --git a/net/tipc/Kconfig b/net/tipc/Kconfig
index 4f99600a5fed..c890848f9d56 100644
--- a/net/tipc/Kconfig
+++ b/net/tipc/Kconfig
@@ -31,3 +31,10 @@ config TIPC_PORTS
 
           Setting this to a smaller value saves some memory,
           setting it to higher allows for more ports.
+
+config TIPC_MEDIA_IB
+        bool "InfiniBand media type support"
+        depends on TIPC && INFINIBAND_IPOIB
+        help
+          Saying Y here will enable support for running TIPC on
+          IP-over-InfiniBand devices.