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Commit 250fc3df authored by Florian Westphal's avatar Florian Westphal Committed by David S. Miller
Browse files

rtnetlink: add helpers to dump vf information 



similar to earlier patches, split out more parts of this function to
better see what is happening and where we assume rtnl is locked.

Reviewed-by: default avatarDavid Ahern <dsahern@gmail.com>
Signed-off-by: default avatarFlorian Westphal <fw@strlen.de>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 79110a04

net/core/rtnetlink.c

+31 −19
Original line number Diff line number Diff line
@@ -1211,6 +1211,36 @@ static noinline_for_stack int rtnl_fill_vfinfo(struct sk_buff *skb, 
	return -EMSGSIZE;

}



static noinline_for_stack int rtnl_fill_vf(struct sk_buff *skb,

					   struct net_device *dev,

					   u32 ext_filter_mask)

{

	struct nlattr *vfinfo;

	int i, num_vfs;



	if (!dev->dev.parent || ((ext_filter_mask & RTEXT_FILTER_VF) == 0))

		return 0;



	num_vfs = dev_num_vf(dev->dev.parent);

	if (nla_put_u32(skb, IFLA_NUM_VF, num_vfs))

		return -EMSGSIZE;



	if (!dev->netdev_ops->ndo_get_vf_config)

		return 0;



	vfinfo = nla_nest_start(skb, IFLA_VFINFO_LIST);

	if (!vfinfo)

		return -EMSGSIZE;



	for (i = 0; i < num_vfs; i++) {

		if (rtnl_fill_vfinfo(skb, dev, i, vfinfo))

			return -EMSGSIZE;

	}



	nla_nest_end(skb, vfinfo);

	return 0;

}



static int rtnl_fill_link_ifmap(struct sk_buff *skb, struct net_device *dev)

{

	struct rtnl_link_ifmap map;
@@ -1407,27 +1437,9 @@ static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev, 
	if (rtnl_fill_stats(skb, dev))

		goto nla_put_failure;



	if (dev->dev.parent && (ext_filter_mask & RTEXT_FILTER_VF) &&

	    nla_put_u32(skb, IFLA_NUM_VF, dev_num_vf(dev->dev.parent)))

	if (rtnl_fill_vf(skb, dev, ext_filter_mask))

		goto nla_put_failure;



	if (dev->netdev_ops->ndo_get_vf_config && dev->dev.parent &&

	    ext_filter_mask & RTEXT_FILTER_VF) {

		int i;

		struct nlattr *vfinfo;

		int num_vfs = dev_num_vf(dev->dev.parent);



		vfinfo = nla_nest_start(skb, IFLA_VFINFO_LIST);

		if (!vfinfo)

			goto nla_put_failure;

		for (i = 0; i < num_vfs; i++) {

			if (rtnl_fill_vfinfo(skb, dev, i, vfinfo))

				goto nla_put_failure;

		}



		nla_nest_end(skb, vfinfo);

	}



	if (rtnl_port_fill(skb, dev, ext_filter_mask))

		goto nla_put_failure;