fa505da84b
Petr Machata says: ==================== Support for resilient next-hop groups was recently accepted to Linux kernel[1]. Resilient next-hop groups add a layer of indirection between the SKB hash and the next hop. Thus the hash is used to reference a hash table bucket, which is then used to reference a particular next hop. This allows the system more flexibility when assigning SKB hash space to next hops. Previously, each next hop had to be assigned a continuous range of SKB hash space. With a hash table as an intermediate layer, it is possible to reassign next hops with a hash table bucket granularity. In turn, this mends issues with traffic flow redirection resulting from next hop removal or adjustments in next-hop weights. In this patch set, introduce support for resilient next-hop groups to iproute2. - Patch #1 brings include/uapi/linux/nexthop.h and /rtnetlink.h up to date. - Patches #2 and #3 add new helpers that will be useful later. - Patch #4 extends the ip/nexthop sub-tool to accept group type as a command line argument, and to dispatch based on the specified type. - Patch #5 adds the support for resilient next-hop groups. - Patch #6 adds the support for resilient next-hop group bucket interface. To illustrate the usage, consider the following commands: # ip nexthop add id 1 via 192.0.2.2 dev dummy1 # ip nexthop add id 2 via 192.0.2.3 dev dummy1 # ip nexthop add id 10 group 1/2 type resilient \ buckets 8 idle_timer 60 unbalanced_timer 300 The last command creates a resilient next-hop group. It will have 8 buckets, each bucket will be considered idle when no traffic hits it for at least 60 seconds, and if the table remains out of balance for 300 seconds, it will be forcefully brought into balance. And this is how the next-hop group bucket interface looks: # ip nexthop bucket show id 10 id 10 index 0 idle_time 5.59 nhid 1 id 10 index 1 idle_time 5.59 nhid 1 id 10 index 2 idle_time 8.74 nhid 2 id 10 index 3 idle_time 8.74 nhid 2 id 10 index 4 idle_time 8.74 nhid 1 id 10 index 5 idle_time 8.74 nhid 1 id 10 index 6 idle_time 8.74 nhid 1 id 10 index 7 idle_time 8.74 nhid 1 [1] https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git/commit/?id=2a0186a37700b0d5b8cc40be202a62af44f02fa2 ==================== Signed-off-by: David Ahern <dsahern@kernel.org> |
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| bash-completion | ||
| bridge | ||
| dcb | ||
| devlink | ||
| doc/actions | ||
| etc/iproute2 | ||
| examples/bpf | ||
| genl | ||
| include | ||
| ip | ||
| lib | ||
| man | ||
| misc | ||
| netem | ||
| rdma | ||
| schema | ||
| tc | ||
| testsuite | ||
| tipc | ||
| vdpa | ||
| .clang-format | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| Makefile | ||
| README | ||
| README.devel | ||
| configure | ||
README
This is a set of utilities for Linux networking.
Information:
https://wiki.linuxfoundation.org/networking/iproute2
Download:
http://www.kernel.org/pub/linux/utils/net/iproute2/
Stable version repository:
git://git.kernel.org/pub/scm/network/iproute2/iproute2.git
Development repository:
git://git.kernel.org/pub/scm/network/iproute2/iproute2-next.git
How to compile this.
--------------------
1. libdbm
arpd needs to have the berkeleydb development libraries. For Debian
users this is the package with a name like libdbX.X-dev.
DBM_INCLUDE points to the directory with db_185.h which
is the include file used by arpd to get to the old format Berkeley
database routines. Often this is in the db-devel package.
2. make
The makefile will automatically build a config.mk file which
contains definitions of libraries that may or may not be available
on the system such as: ATM, ELF, MNL, and SELINUX.
3. To make documentation, cd to doc/ directory , then
look at start of Makefile and set correct values for
PAGESIZE=a4 , ie: a4 , letter ... (string)
PAGESPERPAGE=2 , ie: 1 , 2 ... (numeric)
and make there. It assumes, that latex, dvips and psnup
are in your path.
4. This package includes matching sanitized kernel headers because
the build environment may not have up to date versions. See Makefile
if you have special requirements and need to point at different
kernel include files.
Stephen Hemminger
stephen@networkplumber.org
Alexey Kuznetsov
kuznet@ms2.inr.ac.ru