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| author | William Tu <u9012063@gmail.com> | 2016-06-10 11:49:33 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-06-10 17:58:03 -0700 |
| commit | f2a4d086ed4c588d32fe9b7aa67fead7280e7bf1 (patch) | |
| tree | 7824d6446b4fd259cc7430641fd27475445361ba /net/openvswitch/datapath.h | |
| parent | 1578b0a5e92825334760741e5c166b8873886f1b (diff) | |
| download | op-kernel-dev-f2a4d086ed4c588d32fe9b7aa67fead7280e7bf1.zip op-kernel-dev-f2a4d086ed4c588d32fe9b7aa67fead7280e7bf1.tar.gz | |
openvswitch: Add packet truncation support.
The patch adds a new OVS action, OVS_ACTION_ATTR_TRUNC, in order to
truncate packets. A 'max_len' is added for setting up the maximum
packet size, and a 'cutlen' field is to record the number of bytes
to trim the packet when the packet is outputting to a port, or when
the packet is sent to userspace.
Signed-off-by: William Tu <u9012063@gmail.com>
Cc: Pravin Shelar <pshelar@nicira.com>
Acked-by: Pravin B Shelar <pshelar@ovn.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/openvswitch/datapath.h')
| -rw-r--r-- | net/openvswitch/datapath.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/net/openvswitch/datapath.h b/net/openvswitch/datapath.h index 427e39a..ab85c1c 100644 --- a/net/openvswitch/datapath.h +++ b/net/openvswitch/datapath.h @@ -100,11 +100,13 @@ struct datapath { * @input_vport: The original vport packet came in on. This value is cached * when a packet is received by OVS. * @mru: The maximum received fragement size; 0 if the packet is not + * @cutlen: The number of bytes from the packet end to be removed. * fragmented. */ struct ovs_skb_cb { struct vport *input_vport; u16 mru; + u32 cutlen; }; #define OVS_CB(skb) ((struct ovs_skb_cb *)(skb)->cb) @@ -194,7 +196,8 @@ extern struct genl_family dp_vport_genl_family; void ovs_dp_process_packet(struct sk_buff *skb, struct sw_flow_key *key); void ovs_dp_detach_port(struct vport *); int ovs_dp_upcall(struct datapath *, struct sk_buff *, - const struct sw_flow_key *, const struct dp_upcall_info *); + const struct sw_flow_key *, const struct dp_upcall_info *, + uint32_t cutlen); const char *ovs_dp_name(const struct datapath *dp); struct sk_buff *ovs_vport_cmd_build_info(struct vport *, u32 pid, u32 seq, |
