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authorLinus Torvalds <torvalds@linux-foundation.org>2017-11-15 11:56:19 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2017-11-15 11:56:19 -0800
commit5bbcc0f595fadb4cac0eddc4401035ec0bd95b09 (patch)
tree3b65e490cc36a6c6fecac1fa24d9e0ac9ced4455 /Documentation/networking/vrf.txt
parent892204e06cb9e89fbc4b299a678f9ca358e97cac (diff)
parent50895b9de1d3e0258e015e8e55128d835d9a9f19 (diff)
downloadop-kernel-dev-5bbcc0f595fadb4cac0eddc4401035ec0bd95b09.zip
op-kernel-dev-5bbcc0f595fadb4cac0eddc4401035ec0bd95b09.tar.gz
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
Pull networking updates from David Miller: "Highlights: 1) Maintain the TCP retransmit queue using an rbtree, with 1GB windows at 100Gb this really has become necessary. From Eric Dumazet. 2) Multi-program support for cgroup+bpf, from Alexei Starovoitov. 3) Perform broadcast flooding in hardware in mv88e6xxx, from Andrew Lunn. 4) Add meter action support to openvswitch, from Andy Zhou. 5) Add a data meta pointer for BPF accessible packets, from Daniel Borkmann. 6) Namespace-ify almost all TCP sysctl knobs, from Eric Dumazet. 7) Turn on Broadcom Tags in b53 driver, from Florian Fainelli. 8) More work to move the RTNL mutex down, from Florian Westphal. 9) Add 'bpftool' utility, to help with bpf program introspection. From Jakub Kicinski. 10) Add new 'cpumap' type for XDP_REDIRECT action, from Jesper Dangaard Brouer. 11) Support 'blocks' of transformations in the packet scheduler which can span multiple network devices, from Jiri Pirko. 12) TC flower offload support in cxgb4, from Kumar Sanghvi. 13) Priority based stream scheduler for SCTP, from Marcelo Ricardo Leitner. 14) Thunderbolt networking driver, from Amir Levy and Mika Westerberg. 15) Add RED qdisc offloadability, and use it in mlxsw driver. From Nogah Frankel. 16) eBPF based device controller for cgroup v2, from Roman Gushchin. 17) Add some fundamental tracepoints for TCP, from Song Liu. 18) Remove garbage collection from ipv6 route layer, this is a significant accomplishment. From Wei Wang. 19) Add multicast route offload support to mlxsw, from Yotam Gigi" * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (2177 commits) tcp: highest_sack fix geneve: fix fill_info when link down bpf: fix lockdep splat net: cdc_ncm: GetNtbFormat endian fix openvswitch: meter: fix NULL pointer dereference in ovs_meter_cmd_reply_start netem: remove unnecessary 64 bit modulus netem: use 64 bit divide by rate tcp: Namespace-ify sysctl_tcp_default_congestion_control net: Protect iterations over net::fib_notifier_ops in fib_seq_sum() ipv6: set all.accept_dad to 0 by default uapi: fix linux/tls.h userspace compilation error usbnet: ipheth: prevent TX queue timeouts when device not ready vhost_net: conditionally enable tx polling uapi: fix linux/rxrpc.h userspace compilation errors net: stmmac: fix LPI transitioning for dwmac4 atm: horizon: Fix irq release error net-sysfs: trigger netlink notification on ifalias change via sysfs openvswitch: Using kfree_rcu() to simplify the code openvswitch: Make local function ovs_nsh_key_attr_size() static openvswitch: Fix return value check in ovs_meter_cmd_features() ...
Diffstat (limited to 'Documentation/networking/vrf.txt')
-rw-r--r--Documentation/networking/vrf.txt13
1 files changed, 9 insertions, 4 deletions
diff --git a/Documentation/networking/vrf.txt b/Documentation/networking/vrf.txt
index 3918dae..8ff7b4c 100644
--- a/Documentation/networking/vrf.txt
+++ b/Documentation/networking/vrf.txt
@@ -71,7 +71,12 @@ Setup
ip ru add iif vrf-blue table 10
3. Set the default route for the table (and hence default route for the VRF).
- ip route add table 10 unreachable default
+ ip route add table 10 unreachable default metric 4278198272
+
+ This high metric value ensures that the default unreachable route can
+ be overridden by a routing protocol suite. FRRouting interprets
+ kernel metrics as a combined admin distance (upper byte) and priority
+ (lower 3 bytes). Thus the above metric translates to [255/8192].
4. Enslave L3 interfaces to a VRF device.
ip link set dev eth1 master vrf-blue
@@ -256,7 +261,7 @@ older form without it.
For example:
$ ip route show vrf red
- prohibit default
+ unreachable default metric 4278198272
broadcast 10.2.1.0 dev eth1 proto kernel scope link src 10.2.1.2
10.2.1.0/24 dev eth1 proto kernel scope link src 10.2.1.2
local 10.2.1.2 dev eth1 proto kernel scope host src 10.2.1.2
@@ -282,7 +287,7 @@ older form without it.
ff00::/8 dev red metric 256 pref medium
ff00::/8 dev eth1 metric 256 pref medium
ff00::/8 dev eth2 metric 256 pref medium
-
+ unreachable default dev lo metric 4278198272 error -101 pref medium
8. Route Lookup for a VRF
@@ -331,7 +336,7 @@ function vrf_create
ip link add ${VRF} type vrf table ${TBID}
if [ "${VRF}" != "mgmt" ]; then
- ip route add table ${TBID} unreachable default
+ ip route add table ${TBID} unreachable default metric 4278198272
fi
ip link set dev ${VRF} up
}
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