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openvswitch: Serialize acts with original netlink len

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Previously, we used the kernel-internal netlink actions length to
calculate the size of messages to serialize back to userspace.
However,the sw_flow_actions may not be formatted exactly the same as the
actions on the wire, so store the original actions length when
de-serializing and re-use the original length when serializing.

Signed-off-by: Joe Stringer <joestringer@nicira.com>
Acked-by: Pravin B Shelar <pshelar@nicira.com>
Acked-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Joe Stringer 2015-08-26 11:31:44 -07:00 • committed by David S. Miller
parent 538e456319
commit 8e2fed1c0c
3 changed files with 4 additions and 1 deletions
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2
net/openvswitch/datapath.c
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@ -713,7 +713,7 @@ static size_t ovs_flow_cmd_msg_size(const struct sw_flow_actions *acts,
/* OVS_FLOW_ATTR_ACTIONS */
if (should_fill_actions(ufid_flags))
len += nla_total_size(acts->actions_len);
len += nla_total_size(acts->orig_len);
return len
+ nla_total_size(sizeof(struct ovs_flow_stats)) /* OVS_FLOW_ATTR_STATS */