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Date: Tue, 11 Jan 2011 18:35:24 +0200 From: Vlad Dogaru <ddvlad@...edu.org> To: netdev@...r.kernel.org Cc: Vlad Dogaru <ddvlad@...edu.org>, jamal <hadi@...erus.ca>, Octavian Purdila <opurdila@...acom.com> Subject: [PATCH v2 2/2] netlink: support setting devgroup parameters If a rtnetlink request specifies a negative or zero ifindex and has no interface name attribute, but has a group attribute, then the chenges are made to all the interfaces belonging to the specified group. Signed-off-by: Vlad Dogaru <ddvlad@...edu.org> --- net/core/rtnetlink.c | 32 ++++++++++++++++++++++++++++---- 1 files changed, 28 insertions(+), 4 deletions(-) diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c index 012b0f0..f208397 100644 --- a/net/core/rtnetlink.c +++ b/net/core/rtnetlink.c @@ -1558,6 +1558,24 @@ err: } EXPORT_SYMBOL(rtnl_create_link); +static int rtnl_group_changelink(struct net *net, int group, + struct ifinfomsg *ifm, + struct nlattr **tb) +{ + struct net_device *dev; + int err; + + for_each_netdev(net, dev) { + if (dev->group == group) { + err = do_setlink(dev, ifm, tb, NULL, 0); + if (err < 0) + return err; + } + } + + return 0; +} + static int rtnl_newlink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) { struct net *net = sock_net(skb->sk); @@ -1585,10 +1603,16 @@ replay: ifm = nlmsg_data(nlh); if (ifm->ifi_index > 0) dev = __dev_get_by_index(net, ifm->ifi_index); - else if (ifname[0]) - dev = __dev_get_by_name(net, ifname); - else - dev = NULL; + else { + if (ifname[0]) + dev = __dev_get_by_name(net, ifname); + else if (tb[IFLA_GROUP]) + return rtnl_group_changelink(net, + nla_get_u32(tb[IFLA_GROUP]), + ifm, tb); + else + dev = NULL; + } err = validate_linkmsg(dev, tb); if (err < 0) -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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