/*
- * Copyright (c) 2009 Nicira Networks.
+ * Copyright (c) 2009, 2010 Nicira Networks.
*
* This file is offered under your choice of two licenses: Apache 2.0 or GNU
* GPL 2.0 or later. The permission statements for each of these licenses is
* ----------------------------------------------------------------------
*/
-/* Protocol between secchan and datapath. */
+/* Protocol between userspace and kernel datapath. */
#ifndef OPENVSWITCH_DATAPATH_PROTOCOL_H
#define OPENVSWITCH_DATAPATH_PROTOCOL_H 1
#define ODP_EXECUTE _IOR('O', 18, struct odp_execute)
+#define ODP_SET_SFLOW_PROBABILITY _IOR('O', 19, int)
+#define ODP_GET_SFLOW_PROBABILITY _IOW('O', 20, int)
+
struct odp_stats {
/* Flows. */
__u32 n_flows; /* Number of flows in flow table. */
/* Queues. */
__u16 max_miss_queue; /* Max length of ODPL_MISS queue. */
__u16 max_action_queue; /* Max length of ODPL_ACTION queue. */
+ __u16 max_sflow_queue; /* Max length of ODPL_SFLOW queue. */
};
/* Logical ports. */
#define ODPP_LOCAL ((__u16)0)
#define ODPP_NONE ((__u16)-1)
+#define ODPP_NORMAL ((__u16)-2)
/* Listening channels. */
#define _ODPL_MISS_NR 0 /* Packet missed in flow table. */
#define ODPL_MISS (1 << _ODPL_MISS_NR)
#define _ODPL_ACTION_NR 1 /* Packet output to ODPP_CONTROLLER. */
#define ODPL_ACTION (1 << _ODPL_ACTION_NR)
-#define ODPL_ALL (ODPL_MISS | ODPL_ACTION)
-
-/* Format of messages read from datapath fd. */
+#define _ODPL_SFLOW_NR 2 /* sFlow samples. */
+#define ODPL_SFLOW (1 << _ODPL_SFLOW_NR)
+#define ODPL_ALL (ODPL_MISS | ODPL_ACTION | ODPL_SFLOW)
+
+/**
+ * struct odp_msg - format of messages read from datapath fd.
+ * @type: One of the %_ODPL_* constants.
+ * @length: Total length of message, including this header.
+ * @port: Port that received the packet embedded in this message.
+ * @reserved: Not currently used. Should be set to 0.
+ * @arg: Argument value whose meaning depends on @type.
+ *
+ * For @type == %_ODPL_MISS_NR, the header is followed by packet data. The
+ * @arg member is unused and set to 0.
+ *
+ * For @type == %_ODPL_ACTION_NR, the header is followed by packet data. The
+ * @arg member is copied from the &struct odp_action_controller that caused
+ * the &struct odp_msg to be composed.
+ *
+ * For @type == %_ODPL_SFLOW_NR, the header is followed by &struct
+ * odp_sflow_sample_header, then by an array of &union odp_action (the number
+ * of which is specified in &struct odp_sflow_sample_header), then by packet
+ * data.
+ */
struct odp_msg {
- __u32 type; /* _ODPL_MISS_NR or _ODPL_ACTION_NR. */
- __u32 length; /* Message length, including header. */
- __u16 port; /* Port on which frame was received. */
+ __u32 type;
+ __u32 length;
+ __u16 port;
__u16 reserved;
- __u32 arg; /* Argument value specified in action. */
- /* Followed by packet data. */
+ __u32 arg;
+};
+
+/**
+ * struct odp_sflow_sample_header - header added to sFlow sampled packet.
+ * @sample_pool: Number of packets that were candidates for sFlow sampling,
+ * regardless of whether they were actually chosen and sent down to userspace.
+ * @n_actions: Number of "union odp_action"s immediately following this header.
+ *
+ * This header follows &struct odp_msg when that structure's @type is
+ * %_ODPL_SFLOW_NR, and it is itself followed by an array of &union odp_action
+ * (the number of which is specified in @n_actions) and then by packet data.
+ */
+struct odp_sflow_sample_header {
+ __u32 sample_pool;
+ __u32 n_actions;
};
#define ODP_PORT_INTERNAL (1 << 0) /* This port is simulated. */
};
struct odp_flow_key {
- __be32 nw_src; /* IP source address. */
- __be32 nw_dst; /* IP destination address. */
- __u16 in_port; /* Input switch port. */
- __be16 dl_vlan; /* Input VLAN. */
- __be16 dl_type; /* Ethernet frame type. */
- __be16 tp_src; /* TCP/UDP source port. */
- __be16 tp_dst; /* TCP/UDP destination port. */
- __u8 dl_src[ETH_ALEN]; /* Ethernet source address. */
- __u8 dl_dst[ETH_ALEN]; /* Ethernet destination address. */
- __u8 nw_proto; /* IP protocol. */
- __u8 reserved; /* Pad to 64 bits. */
+ __be32 nw_src; /* IP source address. */
+ __be32 nw_dst; /* IP destination address. */
+ __u16 in_port; /* Input switch port. */
+ __be16 dl_vlan; /* Input VLAN. */
+ __be16 dl_type; /* Ethernet frame type. */
+ __be16 tp_src; /* TCP/UDP source port. */
+ __be16 tp_dst; /* TCP/UDP destination port. */
+ __u8 dl_src[ETH_ALEN]; /* Ethernet source address. */
+ __u8 dl_dst[ETH_ALEN]; /* Ethernet destination address. */
+ __u8 nw_proto; /* IP protocol or lower 8 bits of
+ ARP opcode. */
+ __u8 reserved; /* Pad to 64 bits. */
};
+/* Flags for ODP_FLOW. */
+#define ODPFF_ZERO_TCP_FLAGS (1 << 0) /* Zero the TCP flags. */
+
struct odp_flow {
struct odp_flow_stats stats;
struct odp_flow_key key;
union odp_action *actions;
__u32 n_actions;
+ __u32 flags;
};
/* Flags for ODP_FLOW_PUT. */
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