From 47c697aa2d07f4bf258e7ad53cdb6c77c339b843 Mon Sep 17 00:00:00 2001 From: andy zhou Date: Mon, 20 Mar 2017 16:32:27 -0700 Subject: [PATCH] openvswitch: Deferred fifo API change. add_deferred_actions() API currently requires actions to be passed in as a fully encoded netlink message. So far both 'sample' and 'recirc' actions happens to carry actions as fully encoded netlink messages. However, this requirement is more restrictive than necessary, future patch will need to pass in action lists that are not fully encoded by themselves. Signed-off-by: Andy Zhou Acked-by: Joe Stringer Acked-by: Pravin B Shelar Signed-off-by: David S. Miller --- net/openvswitch/actions.c | 18 +++++++++++------- 1 file changed, 11 insertions(+), 7 deletions(-) diff --git a/net/openvswitch/actions.c b/net/openvswitch/actions.c index c82301ce3fff..75182e91ef45 100644 --- a/net/openvswitch/actions.c +++ b/net/openvswitch/actions.c @@ -51,6 +51,7 @@ static int do_execute_actions(struct datapath *dp, struct sk_buff *skb, struct deferred_action { struct sk_buff *skb; const struct nlattr *actions; + int actions_len; /* Store pkt_key clone when creating deferred action. */ struct sw_flow_key pkt_key; @@ -119,8 +120,9 @@ static struct deferred_action *action_fifo_put(struct action_fifo *fifo) /* Return true if fifo is not full */ static struct deferred_action *add_deferred_actions(struct sk_buff *skb, - const struct sw_flow_key *key, - const struct nlattr *attr) + const struct sw_flow_key *key, + const struct nlattr *actions, + const int actions_len) { struct action_fifo *fifo; struct deferred_action *da; @@ -129,7 +131,8 @@ static struct deferred_action *add_deferred_actions(struct sk_buff *skb, da = action_fifo_put(fifo); if (da) { da->skb = skb; - da->actions = attr; + da->actions = actions; + da->actions_len = actions_len; da->pkt_key = *key; } @@ -966,7 +969,8 @@ static int sample(struct datapath *dp, struct sk_buff *skb, /* Skip the sample action when out of memory. */ return 0; - if (!add_deferred_actions(skb, key, a)) { + if (!add_deferred_actions(skb, key, nla_data(acts_list), + nla_len(acts_list))) { if (net_ratelimit()) pr_warn("%s: deferred actions limit reached, dropping sample action\n", ovs_dp_name(dp)); @@ -1123,7 +1127,7 @@ static int execute_recirc(struct datapath *dp, struct sk_buff *skb, return 0; } - da = add_deferred_actions(skb, key, NULL); + da = add_deferred_actions(skb, key, NULL, 0); if (da) { da->pkt_key.recirc_id = nla_get_u32(a); } else { @@ -1278,10 +1282,10 @@ static void process_deferred_actions(struct datapath *dp) struct sk_buff *skb = da->skb; struct sw_flow_key *key = &da->pkt_key; const struct nlattr *actions = da->actions; + int actions_len = da->actions_len; if (actions) - do_execute_actions(dp, skb, key, actions, - nla_len(actions)); + do_execute_actions(dp, skb, key, actions, actions_len); else ovs_dp_process_packet(skb, key); } while (!action_fifo_is_empty(fifo));