diff options
Diffstat (limited to 'net/openvswitch/actions.c')
| -rw-r--r-- | net/openvswitch/actions.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/net/openvswitch/actions.c b/net/openvswitch/actions.c index e47ebbbe71b8..2c151bb322c1 100644 --- a/net/openvswitch/actions.c +++ b/net/openvswitch/actions.c @@ -169,6 +169,10 @@ static int clone_execute(struct datapath *dp, struct sk_buff *skb, const struct nlattr *actions, int len, bool last, bool clone_flow_key); +static int do_execute_actions(struct datapath *dp, struct sk_buff *skb, + struct sw_flow_key *key, + const struct nlattr *attr, int len); + static void update_ethertype(struct sk_buff *skb, struct ethhdr *hdr, __be16 ethertype) { @@ -1213,6 +1217,40 @@ static int execute_recirc(struct datapath *dp, struct sk_buff *skb, return clone_execute(dp, skb, key, recirc_id, NULL, 0, last, true); } +static int execute_check_pkt_len(struct datapath *dp, struct sk_buff *skb, + struct sw_flow_key *key, + const struct nlattr *attr, bool last) +{ + const struct nlattr *actions, *cpl_arg; + const struct check_pkt_len_arg *arg; + int rem = nla_len(attr); + bool clone_flow_key; + + /* The first netlink attribute in 'attr' is always + * 'OVS_CHECK_PKT_LEN_ATTR_ARG'. + */ + cpl_arg = nla_data(attr); + arg = nla_data(cpl_arg); + + if (skb->len <= arg->pkt_len) { + /* Second netlink attribute in 'attr' is always + * 'OVS_CHECK_PKT_LEN_ATTR_ACTIONS_IF_LESS_EQUAL'. + */ + actions = nla_next(cpl_arg, &rem); + clone_flow_key = !arg->exec_for_lesser_equal; + } else { + /* Third netlink attribute in 'attr' is always + * 'OVS_CHECK_PKT_LEN_ATTR_ACTIONS_IF_GREATER'. + */ + actions = nla_next(cpl_arg, &rem); + actions = nla_next(actions, &rem); + clone_flow_key = !arg->exec_for_greater; + } + + return clone_execute(dp, skb, key, 0, nla_data(actions), + nla_len(actions), last, clone_flow_key); +} + /* Execute a list of actions against 'skb'. */ static int do_execute_actions(struct datapath *dp, struct sk_buff *skb, struct sw_flow_key *key, @@ -1374,6 +1412,16 @@ static int do_execute_actions(struct datapath *dp, struct sk_buff *skb, break; } + + case OVS_ACTION_ATTR_CHECK_PKT_LEN: { + bool last = nla_is_last(a, rem); + + err = execute_check_pkt_len(dp, skb, key, a, last); + if (last) + return err; + + break; + } } if (unlikely(err)) { |