903818fbf9
'ip netns exec' changes the current netns just before executing a child process, and restores it after forking. This is needed if we're running in batch or do_all mode. Some cleanups must be done both in the parent and in the child: the parent must restore the previous netns, while the child must reset any VRF association. Unfortunately, if do_all is set, the VRF are not reset in the child, and the spawned processes are started with the wrong VRF context. This can be triggered with this script: # ip -b - <<-'EOF' link add type vrf table 100 link set vrf0 up link add type dummy link set dummy0 vrf vrf0 up netns add ns1 EOF # ip -all -b - <<-'EOF' vrf exec vrf0 true netns exec setsid -f sleep 1h EOF # ip vrf pids vrf0 314 sleep # ps 314 PID TTY STAT TIME COMMAND 314 ? Ss 0:00 sleep 1h Refactor cmd_exec() and pass to it a function pointer which is called in the child before the final exec. In the netns exec case the function just resets the VRF and switches netns. Doing it in the child is less error prone and safer, because the parent environment is always kept unaltered. After this refactor some utility functions became unused, so remove them. Signed-off-by: Matteo Croce <mcroce@redhat.com> Signed-off-by: Stephen Hemminger <stephen@networkplumber.org> |
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|---|---|---|
| bash-completion | ||
| bridge | ||
| devlink | ||
| doc/actions | ||
| etc/iproute2 | ||
| examples | ||
| genl | ||
| include | ||
| ip | ||
| lib | ||
| man | ||
| misc | ||
| netem | ||
| rdma | ||
| schema | ||
| tc | ||
| testsuite | ||
| tipc | ||
| .clang-format | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| Makefile | ||
| README | ||
| README.devel | ||
| README.distribution | ||
| README.iproute2+tc | ||
| README.lnstat | ||
| 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