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rtnetlink: Compute and store minimum ifinfo dump size

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The message size allocated for rtnl ifinfo dumps was limited to
a single page.  This is not enough for additional interface info
available with devices that support SR-IOV and caused a bug in
which VF info would not be displayed if more than approximately
40 VFs were created per interface.

Implement a new function pointer for the rtnl_register service that will
calculate the amount of data required for the ifinfo dump and allocate
enough data to satisfy the request.

Signed-off-by: Greg Rose <gregory.v.rose@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Greg Rose
2011-06-10 01:27:09 +00:00
committed by Jeff Kirsher
parent 929dd04772
commit c7ac8679be
30 changed files with 158 additions and 90 deletions
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3
net/xfrm/xfrm_user.c
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@ -2299,7 +2299,8 @@ static int xfrm_user_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
if (link->dump == NULL)
return -EINVAL;
return netlink_dump_start(net->xfrm.nlsk, skb, nlh, link->dump, link->done);
return netlink_dump_start(net->xfrm.nlsk, skb, nlh,
link->dump, link->done, 0);
}
err = nlmsg_parse(nlh, xfrm_msg_min[type], attrs, XFRMA_MAX,