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Date: Tue, 4 Aug 2015 21:49:51 -0700 From: Joe Stringer <joestringer@...ira.com> To: netdev@...r.kernel.org Cc: linux-kernel@...r.kernel.org, pablo@...filter.org, kaber@...sh.net, jpettit@...ira.com, pshelar@...ira.com, azhou@...ira.com, jesse@...ira.com, fwestpha@...hat.com, hannes@...hat.com, tgraf@...ronetworks.com Subject: [PATCHv2 net-next 1/9] openvswitch: Serialize acts with original netlink len 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@...ira.com> Acked-by: Thomas Graf <tgraf@...g.ch> --- net/openvswitch/datapath.c | 2 +- net/openvswitch/flow.h | 1 + net/openvswitch/flow_netlink.c | 1 + 3 files changed, 3 insertions(+), 1 deletion(-) diff --git a/net/openvswitch/datapath.c b/net/openvswitch/datapath.c index ffe984f..d5b5473 100644 --- a/net/openvswitch/datapath.c +++ b/net/openvswitch/datapath.c @@ -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 */ diff --git a/net/openvswitch/flow.h b/net/openvswitch/flow.h index b62cdb3..082a87b 100644 --- a/net/openvswitch/flow.h +++ b/net/openvswitch/flow.h @@ -144,6 +144,7 @@ struct sw_flow_id { struct sw_flow_actions { struct rcu_head rcu; + size_t orig_len; /* From flow_cmd_new netlink actions size */ u32 actions_len; struct nlattr actions[]; }; diff --git a/net/openvswitch/flow_netlink.c b/net/openvswitch/flow_netlink.c index a6eb77a..d536fb7 100644 --- a/net/openvswitch/flow_netlink.c +++ b/net/openvswitch/flow_netlink.c @@ -1545,6 +1545,7 @@ static struct sw_flow_actions *nla_alloc_flow_actions(int size, bool log) return ERR_PTR(-ENOMEM); sfa->actions_len = 0; + sfa->orig_len = size; return sfa; } -- 2.1.4 -- 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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