[PATCH iproute2 v2 0/3] refactor the cmd_exec()

[Matteo Croce <mcroce@redhat.com>]

Refactor the netns and ipvrf code so less steps are needed to exec commands
in a netns or a VRF context.
Also remove some code which became dead. bloat-o-meter output:

$ bloat-o-meter ip.old ip
add/remove: 1/4 grow/shrink: 3/4 up/down: 174/-312 (-138)
Function                                     old     new   delta
netns_add                                    971    1058     +87
cmd_exec                                     207     256     +49
on_netns_exec                                 32      60     +28
do_switch                                      -      10     +10
netns_restore                                 69      67      -2
do_ipvrf                                     811     802      -9
netns_switch                                 838     822     -16
on_netns_label                                45       -     -45
do_netns                                    1226    1180     -46
do_each_netns                                 57       -     -57
on_netns                                      60       -     -60
netns_save                                    77       -     -77
Total: Before=668234, After=668096, chg -0.02%

Matteo Croce (3):
  netns: switch netns in the child when executing commands
  ip vrf: use hook to change VRF in the child
  netns: make netns_{save,restore} static

 include/namespace.h |  2 --
 include/utils.h     |  6 ++---
 ip/ip.c             |  1 -
 ip/ipnetns.c        | 56 +++++++++++++++++++++++++++++++++------------
 ip/ipvrf.c          | 12 ++++++----
 lib/exec.c          |  7 +++++-
 lib/namespace.c     | 31 -------------------------
 lib/utils.c         | 27 ----------------------
 8 files changed, 58 insertions(+), 84 deletions(-)

-- 
2.21.0