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bridge link: add option 'self' 

Currently self is set internally only if hwmode is set.
This makes it necessary for the hw to have a mode.
There is no hwmode really required to go to hardware. So, introduce
self for anybody who wants to target hardware.

v1 -> v2
    - fix a few bugs. Initialize flags to zero: this was required to
    keep the current behaviour unchanged.

v2 -> v3
    - fix comment

Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Reviewed-by: Jiri Pirko <jiri@resnulli.us>
This commit is contained in:
Roopa Prabhu 2014-12-06 00:21:01 -08:00 committed by Stephen Hemminger
parent a1e2e5fcee
commit 6fdb465869
1 changed files with 10 additions and 8 deletions
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18
bridge/link.c
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@ -261,7 +261,7 @@ static int brlink_modify(int argc, char **argv)
__s16 priority = -1;
__s8 state = -1;
__s16 mode = -1;
__u16 flags = BRIDGE_FLAGS_MASTER;
__u16 flags = 0;
struct rtattr *nest;
memset(&req, 0, sizeof(req));
@ -321,6 +321,8 @@ static int brlink_modify(int argc, char **argv)
"\"veb\".\n");
exit(-1);
}
} else if (strcmp(*argv, "self") == 0) {
flags = BRIDGE_FLAGS_SELF;
} else {
usage();
}
@ -369,16 +371,16 @@ static int brlink_modify(int argc, char **argv)
addattr_nest_end(&req.n, nest);
/* IFLA_AF_SPEC nested attribute. Contains IFLA_BRIDGE_FLAGS that
* designates master or self operation as well as 'vepa' or 'veb'
* operation modes. These are only valid in 'self' mode on some
* devices so far. Thus we only need to include the flags attribute
* if we are setting the hw mode.
/* IFLA_AF_SPEC nested attribute. Contains IFLA_BRIDGE_FLAGS that
* designates master or self operation and IFLA_BRIDGE_MODE
* for hw 'vepa' or 'veb' operation modes. The hwmodes are
* only valid in 'self' mode on some devices so far.
*/
if (mode >= 0) {
if (mode >= 0 || flags > 0) {
nest = addattr_nest(&req.n, sizeof(req), IFLA_AF_SPEC);
addattr16(&req.n, sizeof(req), IFLA_BRIDGE_FLAGS, flags);
if (flags > 0)
addattr16(&req.n, sizeof(req), IFLA_BRIDGE_FLAGS, flags);
if (mode >= 0)
addattr16(&req.n, sizeof(req), IFLA_BRIDGE_MODE, mode);