I do not take this as v2 because the design of this has been changed,
and code is rewritten. according to thread:
http://lists.nongnu.org/archive/html/qemu-devel/2015-07/msg05445.html
This patch add a new object netfilter, capture all network packets.
Also implement a netbuffer based on this object.
the "buffer" netfilter could be used by VM FT solutions like
Macrocheckpointing, to buffer/release packets. Or to simulate
packet delay.
Usage:
-netdev tap,id=bn0
-netfilter buffer,id=f0,netdev=bn0,interval=1000
-device e1000,netdev=bn0
dynamically add/remove netfilters:
netfilter_add buffer,id=f0,netdev=bn0,interval=1000
netfilter_del f0
TODO:
- multiqueue support
- dump
Yang Hongyang (12):
net: add a new object netfilter
init/cleanup of netfilter object
netfilter: add netfilter_{add|del} commands
net: add/remove filters from network backend
netfilter: hook packets before receive
netfilter: provide a compat receive_iov
net/queue: export qemu_net_queue_append
move out net queue structs define
netfilter: add a netbuffer filter
netbuffer: add a public api filter_buffer_release_all
filter/buffer: add an interval option to buffer filter
filter/buffer: update command description and help
hmp-commands.hx | 30 ++++++
hmp.c | 29 ++++++
hmp.h | 4 +
include/net/filter.h | 59 +++++++++++
include/net/net.h | 8 ++
include/net/queue.h | 26 +++++
include/qemu/typedefs.h | 1 +
include/sysemu/sysemu.h | 1 +
monitor.c | 33 ++++++
net/Makefile.objs | 2 +
net/filter-buffer.c | 192 ++++++++++++++++++++++++++++++++++
net/filter.c | 270 ++++++++++++++++++++++++++++++++++++++++++++++++
net/filters.h | 17 +++
net/net.c | 103 +++++++++++++++++-
net/queue.c | 31 ++----
qapi-schema.json | 86 +++++++++++++++
qemu-options.hx | 4 +
qmp-commands.hx | 55 ++++++++++
vl.c | 13 +++
19 files changed, 938 insertions(+), 26 deletions(-)
create mode 100644 include/net/filter.h
create mode 100644 net/filter-buffer.c
create mode 100644 net/filter.c
create mode 100644 net/filters.h
--
1.9.1
