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bridge: Allow to easy change network namespace 

Added new '-netns' option to simplify executing following cmd:

    ip netns exec NETNS bridge OPTIONS COMMAND OBJECT

    to

    bridge -n[etns] NETNS OPTIONS COMMAND OBJECT

e.g.:

    bridge -net vnet0 fdb

Signed-off-by: Vadim Kochan <vadim4j@gmail.com>
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
This commit is contained in:
Vadim Kochan 2014-12-24 23:04:10 +02:00 committed by Stephen Hemminger
parent 52700d40a2
commit 527910c801
3 changed files with 32 additions and 2 deletions
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4
bridge/Makefile
View File

@ -2,6 +2,10 @@ BROBJ = bridge.o fdb.o monitor.o link.o mdb.o vlan.o
include ../Config
ifeq ($(IP_CONFIG_SETNS),y)
CFLAGS += -DHAVE_SETNS
endif
all: bridge
bridge: $(BROBJ) $(LIBNETLINK)

7
bridge/bridge.c
View File

@ -13,6 +13,7 @@
#include "SNAPSHOT.h"
#include "utils.h"
#include "br_common.h"
#include "namespace.h"
struct rtnl_handle rth = { .fd = -1 };
int preferred_family = AF_UNSPEC;
@ -31,7 +32,7 @@ static void usage(void)
"Usage: bridge [ OPTIONS ] OBJECT { COMMAND | help }\n"
"where OBJECT := { link | fdb | mdb | vlan | monitor }\n"
" OPTIONS := { -V[ersion] | -s[tatistics] | -d[etails] |\n"
" -o[neline] | -t[imestamp] \n");
" -o[neline] | -t[imestamp] | -n[etns] name }\n");
exit(-1);
}
@ -112,6 +113,10 @@ main(int argc, char **argv)
preferred_family = AF_INET;
} else if (strcmp(opt, "-6") == 0) {
preferred_family = AF_INET6;
} else if (matches(opt, "-netns") == 0) {
NEXT_ARG();
if (netns_switch(argv[1]))
exit(-1);
} else {
fprintf(stderr, "Option \"%s\" is unknown, try \"bridge help\".\n", opt);
exit(-1);

23
man/man8/bridge.8
View File

@ -19,7 +19,8 @@ bridge \- show / manipulate bridge addresses and devices
.ti -8
.IR OPTIONS " := { "
\fB\-V\fR[\fIersion\fR] |
\fB\-s\fR[\fItatistics\fR] }
\fB\-s\fR[\fItatistics\fR] |
\fB\-n\fR[\fIetns\fR] name }
.ti -8
.BR "bridge link set"
@ -112,6 +113,26 @@ output more information. If this option
is given multiple times, the amount of information increases.
As a rule, the information is statistics or some time values.
.TP
.BR "\-n" , " \-net" , " \-netns " <NETNS>
switches
.B bridge
to the specified network namespace
.IR NETNS .
Actually it just simplifies executing of:
.B ip netns exec
.IR NETNS
.B bridge
.RI "[ " OPTIONS " ] " OBJECT " { " COMMAND " | "
.BR help " }"
to
.B bridge
.RI "-n[etns] " NETNS " [ " OPTIONS " ] " OBJECT " { " COMMAND " | "
.BR help " }"
.SH BRIDGE - COMMAND SYNTAX