/*
- * 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_PORT_GROUP_GET _IOWR('O', 12, struct odp_port_group)
#define ODP_FLOW_GET _IOWR('O', 13, struct odp_flow)
-#define ODP_FLOW_GET_MULTIPLE _IOWR('O', 14, struct odp_flowvec)
+#define ODP_FLOW_PUT _IOWR('O', 14, struct odp_flow)
#define ODP_FLOW_LIST _IOWR('O', 15, struct odp_flowvec)
-
#define ODP_FLOW_FLUSH _IO('O', 16)
-#define ODP_FLOW_PUT _IOWR('O', 17, struct odp_flow)
-#define ODP_FLOW_DEL _IOWR('O', 18, struct odp_flow)
+#define ODP_FLOW_DEL _IOWR('O', 17, struct odp_flow)
+
+#define ODP_EXECUTE _IOR('O', 18, struct odp_execute)
-#define ODP_EXECUTE _IOR('O', 19, 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. */
/* 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. */
__u32 used_nsec;
__u8 tcp_flags;
__u8 ip_tos;
- __u16 reserved;
+ __u16 error; /* Used by ODP_FLOW_GET. */
};
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 dl_vlan_pcp; /* Input VLAN priority. */
+ __u8 nw_tos; /* IP ToS (DSCP field, 6 bits). */
+ __u8 reserved[3]; /* Align to 32-bits...must be zeroed. */
};
+/* 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. */
#define ODPAT_SET_DL_DST 7 /* Ethernet destination address. */
#define ODPAT_SET_NW_SRC 8 /* IP source address. */
#define ODPAT_SET_NW_DST 9 /* IP destination address. */
-#define ODPAT_SET_TP_SRC 10 /* TCP/UDP source port. */
-#define ODPAT_SET_TP_DST 11 /* TCP/UDP destination port. */
-#define ODPAT_N_ACTIONS 12
+#define ODPAT_SET_NW_TOS 10 /* IP ToS/DSCP field (6 bits). */
+#define ODPAT_SET_TP_SRC 11 /* TCP/UDP source port. */
+#define ODPAT_SET_TP_DST 12 /* TCP/UDP destination port. */
+#define ODPAT_N_ACTIONS 13
struct odp_action_output {
__u16 type; /* ODPAT_OUTPUT. */
__be32 nw_addr; /* IP address. */
};
+struct odp_action_nw_tos {
+ __u16 type; /* ODPAT_SET_NW_TOS. */
+ __u8 nw_tos; /* IP ToS/DSCP field (6 bits). */
+ __u8 reserved1;
+ __u16 reserved2;
+ __u16 reserved3;
+};
+
/* Action structure for ODPAT_SET_TP_SRC/DST. */
struct odp_action_tp_port {
__u16 type; /* ODPAT_SET_TP_SRC/DST. */
struct odp_action_vlan_pcp vlan_pcp;
struct odp_action_dl_addr dl_addr;
struct odp_action_nw_addr nw_addr;
+ struct odp_action_nw_tos nw_tos;
struct odp_action_tp_port tp_port;
};