click-devirtualize

[rstory]

Hi. I'm trying to see if click-devirtualize provides any performance gains on modern hardware, but I'm having trouble getting it to work.

When I try to devirtualize a fairly basic config, I get conflicting struct definitions in system headers:

$ click-devirtualize -u test.click > dv
/usr/local/bin/click-buildtool makepackage -C /tmp/clicktmp39238/ -t userlevel -w -fno-access-control clickdv_1WEofgDStwOKBO_PAnKcNa clickdv_1WEofgDStwOKBO_PAnKcNa.u.cc 1>&2

• make clickdv_1WEofgDStwOKBO_PAnKcNa.uo
  make -R CLICK_PACKAGE_MAKING=userlevel clickdv_1WEofgDStwOKBO_PAnKcNa.uo
  make[1]: Entering directory '/tmp/clicktmp39238'
  CXX clickdv_1WEofgDStwOKBO_PAnKcNa.u.cc
  In file included from clickdv_1WEofgDStwOKBO_PAnKcNa.u.cc:419:0:
  /usr/include/net/if_packet.h:29:8: error: redefinition of 'struct sockaddr_pkt'
  struct sockaddr_pkt
  ^
  In file included from clickdv_1WEofgDStwOKBO_PAnKcNa.u.cc:153:0:
  /usr/include/linux/if_packet.h:6:8: error: previous definition of 'struct sockaddr_pkt'
  struct sockaddr_pkt {
  ^
  In file included from clickdv_1WEofgDStwOKBO_PAnKcNa.u.cc:422:0:
  /usr/include/netpacket/packet.h:22:8: error: redefinition of 'struct sockaddr_ll'
  struct sockaddr_ll
  ^
  In file included from clickdv_1WEofgDStwOKBO_PAnKcNa.u.cc:153:0:
  /usr/include/linux/if_packet.h:12:8: error: previous definition of 'struct sockaddr_ll'
  struct sockaddr_ll {
  ^
  In file included from clickdv_1WEofgDStwOKBO_PAnKcNa.u.cc:422:0:
  /usr/include/netpacket/packet.h:67:8: error: redefinition of 'struct packet_mreq'
  struct packet_mreq
  ^
  In file included from clickdv_1WEofgDStwOKBO_PAnKcNa.u.cc:153:0:
  /usr/include/linux/if_packet.h:289:8: error: previous definition of 'struct packet_mreq'
  struct packet_mreq {
  ^

My environment:

• Linux sm3n-1.local 4.4.0-66-generic linuxmodule/FromHost: add ether handler #87-Ubuntu SMP Fri Mar 3 15:29:05 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
• gcc (Ubuntu 5.4.0-6ubuntu1~16.04.4) 5.4.0 20160609
• origin git://github.com/kohler/click.git
• git log -1 master
  commit 7c87208
  Author: Tom Barbette tom.barbette@ulg.ac.be
  Date: Mon May 15 09:06:42 2017 +0200

[tbarbette]

Anyone? Never used that tool personally...