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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 <[email protected]>
Signed-off-by: Jeff Kirsher <[email protected]>
This commit is contained in:
Greg Rose 2011-06-10 01:27:09 +00:00 • committed by Jeff Kirsher
commit c7ac8679be
30 changed files with 158 additions and 90 deletions
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2
drivers/infiniband/core/netlink.c
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@ -148,7 +148,7 @@ static int ibnl_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
return -EINVAL;
return netlink_dump_start(nls, skb, nlh,
client->cb_table[op].dump,
NULL);
NULL, 0);
}
}