X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=include%2Fopenvswitch%2Fdatapath-protocol.h;h=e903f0853ccdcee088239c6883af1fac4010334a;hb=982b88105d0a82ab90b233bf68e4e51ac9cddd23;hp=0078874ff891a93cf075fede0399d7ee4ab0f935;hpb=693c4a01124ec5ad9253f8cfcfd99075a9d637f6;p=openvswitch diff --git a/include/openvswitch/datapath-protocol.h b/include/openvswitch/datapath-protocol.h index 0078874f..e903f085 100644 --- a/include/openvswitch/datapath-protocol.h +++ b/include/openvswitch/datapath-protocol.h @@ -70,17 +70,11 @@ #include #include -#define ODP_MAX 256 /* Maximum number of datapaths. */ - -#define ODP_DP_CREATE _IO('O', 0) -#define ODP_DP_DESTROY _IO('O', 1) -#define ODP_DP_STATS _IOW('O', 2, struct odp_stats) - -#define ODP_GET_DROP_FRAGS _IOW('O', 3, int) -#define ODP_SET_DROP_FRAGS _IOR('O', 4, int) - -#define ODP_GET_LISTEN_MASK _IOW('O', 5, int) -#define ODP_SET_LISTEN_MASK _IOR('O', 6, int) +#define ODP_DP_NEW _IOWR('O', 0, struct odp_datapath) +#define ODP_DP_DEL _IOR('O', 1, struct odp_datapath) +#define ODP_DP_GET _IOWR('O', 2, struct odp_datapath) +#define ODP_DP_SET _IOWR('O', 3, struct odp_datapath) +#define ODP_DP_DUMP _IOWR('O', 4, struct odp_datapath) #define ODP_VPORT_NEW _IOR('O', 7, struct odp_vport) #define ODP_VPORT_DEL _IOR('O', 8, struct odp_vport) @@ -88,16 +82,58 @@ #define ODP_VPORT_SET _IOR('O', 22, struct odp_vport) #define ODP_VPORT_DUMP _IOWR('O', 10, struct odp_vport) -#define ODP_FLOW_GET _IOWR('O', 13, struct odp_flow) -#define ODP_FLOW_PUT _IOWR('O', 14, struct odp_flow) -#define ODP_FLOW_DUMP _IOWR('O', 15, struct odp_flow_dump) -#define ODP_FLOW_FLUSH _IO('O', 16) -#define ODP_FLOW_DEL _IOWR('O', 17, struct odp_flow) +#define ODP_FLOW_NEW _IOWR('O', 13, struct odp_flow) +#define ODP_FLOW_DEL _IOWR('O', 14, struct odp_flow) +#define ODP_FLOW_GET _IOWR('O', 15, struct odp_flow) +#define ODP_FLOW_SET _IOWR('O', 16, struct odp_flow) +#define ODP_FLOW_DUMP _IOWR('O', 17, struct odp_flow) +#define ODP_FLOW_FLUSH _IO('O', 19) -#define ODP_EXECUTE _IOR('O', 18, struct odp_execute) +/** + * struct odp_header - header for ODP Generic Netlink messages. + * @dp_idx: Number of datapath to which the packet belongs. + * + * Attributes following the header are specific to a particular ODP Generic + * Netlink family, but all of the ODP families use this header. + */ +struct odp_header { + uint32_t dp_idx; +}; + +/** + * struct odp_datapath - header with basic information about a datapath. + * @dp_idx: Datapath index (-1 to make a request not specific to a datapath). + * @len: Length of this structure plus the Netlink attributes following it. + * @total_len: Total space available for kernel reply to request. + * + * Followed by &struct nlattr attributes, whose types are drawn from + * %ODP_DP_ATTR_*, up to a length of @len bytes including the &struct + * odp_datapath header. + */ +struct odp_datapath { + int32_t dp_idx; + uint32_t len; + uint32_t total_len; +}; + +enum odp_datapath_type { + ODP_DP_ATTR_UNSPEC, + ODP_DP_ATTR_NAME, /* name of dp_ifidx netdev */ + ODP_DP_ATTR_STATS, /* struct odp_stats */ + ODP_DP_ATTR_IPV4_FRAGS, /* 32-bit enum odp_frag_handling */ + ODP_DP_ATTR_SAMPLING, /* 32-bit fraction of packets to sample. */ + ODP_DP_ATTR_MCGROUPS, /* Nested attributes with multicast groups. */ + __ODP_DP_ATTR_MAX +}; -#define ODP_SET_SFLOW_PROBABILITY _IOR('O', 19, int) -#define ODP_GET_SFLOW_PROBABILITY _IOW('O', 20, int) +#define ODP_DP_ATTR_MAX (__ODP_DP_ATTR_MAX - 1) + +/* Values for ODP_DP_ATTR_IPV4_FRAGS. */ +enum odp_frag_handling { + ODP_DP_FRAG_UNSPEC, + ODP_DP_FRAG_ZERO, /* Treat IP fragments as transport port 0. */ + ODP_DP_FRAG_DROP /* Drop IP fragments. */ +}; struct odp_stats { uint64_t n_frags; /* Number of dropped IP fragments. */ @@ -108,20 +144,50 @@ struct odp_stats { /* Logical ports. */ #define ODPP_LOCAL ((uint16_t)0) -#define ODPP_NONE ((uint16_t)-1) - -/* 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_SFLOW_NR 2 /* sFlow samples. */ -#define ODPL_SFLOW (1 << _ODPL_SFLOW_NR) -#define ODPL_ALL (ODPL_MISS | ODPL_ACTION | ODPL_SFLOW) - -enum odp_packet_type { + +#define ODP_PACKET_FAMILY "odp_packet" + +enum odp_packet_cmd { + ODP_PACKET_CMD_UNSPEC, + + /* Kernel-to-user notifications. */ + ODP_PACKET_CMD_MISS, /* Flow table miss. */ + ODP_PACKET_CMD_ACTION, /* ODPAT_CONTROLLER action. */ + ODP_PACKET_CMD_SAMPLE, /* Sampled packet. */ + + /* User commands. */ + ODP_PACKET_CMD_EXECUTE /* Apply actions to a packet. */ +}; + +/** + * enum odp_packet_attr - attributes for %ODP_PACKET_* commands. + * @ODP_PACKET_ATTR_PACKET: Present for all notifications. Contains the entire + * packet as received, from the start of the Ethernet header onward. For + * %ODP_PACKET_CMD_ACTION, %ODP_PACKET_ATTR_PACKET reflects changes made by + * actions preceding %ODPAT_CONTROLLER, but %ODP_PACKET_ATTR_KEY is the flow + * key extracted from the packet as originally received. + * @ODP_PACKET_ATTR_KEY: Present for all notifications. Contains the flow key + * extracted from the packet as nested %ODP_KEY_ATTR_* attributes. This allows + * userspace to adapt its flow setup strategy by comparing its notion of the + * flow key against the kernel's. + * @ODP_PACKET_ATTR_USERDATA: Present for an %ODP_PACKET_CMD_ACTION + * notification if the %ODPAT_CONTROLLER action's argument was nonzero. + * @ODP_PACKET_ATTR_SAMPLE_POOL: Present for %ODP_PACKET_CMD_SAMPLE. Contains + * the number of packets processed so far that were candidates for sampling. + * @ODP_PACKET_ATTR_ACTIONS: Present for %ODP_PACKET_CMD_SAMPLE. Contains a + * copy of the actions applied to the packet, as nested %ODPAT_* attributes. + * + * These attributes follow the &struct odp_header within the Generic Netlink + * payload for %ODP_PACKET_* commands. + * + * The %ODP_PACKET_ATTR_TYPE, %ODP_PACKET_ATTR_PACKET and %ODP_PACKET_ATTR_KEY + * attributes are present for all notifications. For %ODP_PACKET_CMD_ACTION, + * the %ODP_PACKET_ATTR_USERDATA attribute is included if it would be nonzero. + * For %ODP_PACKET_CMD_SAMPLE, the %ODP_PACKET_ATTR_SAMPLE_POOL and + * %ODP_PACKET_ATTR_ACTIONS attributes are included. + */ +enum odp_packet_attr { ODP_PACKET_ATTR_UNSPEC, - ODP_PACKET_ATTR_TYPE, /* 32-bit enum, one of _ODP_*_NR. */ ODP_PACKET_ATTR_PACKET, /* Packet data. */ ODP_PACKET_ATTR_KEY, /* Nested ODP_KEY_ATTR_* attributes. */ ODP_PACKET_ATTR_USERDATA, /* 64-bit data from ODPAT_CONTROLLER. */ @@ -131,29 +197,7 @@ enum odp_packet_type { }; #define ODP_PACKET_ATTR_MAX (__ODP_PACKET_ATTR_MAX - 1) - -/** - * struct odp_packet - header for packets passed up between kernel and - * userspace. - * @dp_idx: Number of datapath to which the packet belongs. - * @len: Length of complete message, including this header. - * - * The header is followed by a sequence of Netlink attributes. The - * %ODP_PACKET_ATTR_TYPE, %ODP_PACKET_ATTR_PACKET, and %ODP_PACKET_ATTR_KEY - * attributes are always present. When @type == %_ODPL_ACTION_NR, the - * %ODP_PACKET_ATTR_USERDATA attribute is included if it would be nonzero. - * When @type == %_ODPL_SFLOW_NR, the %ODP_PACKET_ATTR_SAMPLE_POOL and - * %ODP_PACKET_ATTR_ACTIONS attributes are included. - * - * For @type of %_ODPL_ACTION_NR, %ODP_PACKET_ATTR_PACKET reflects changes made - * by actions preceding %ODPAT_CONTROLLER, but %ODP_PACKET_ATTR_KEY is the flow - * key extracted from the packet as originally received. - */ -struct odp_packet { - uint32_t dp_idx; - uint32_t len; -}; - + enum odp_vport_type { ODP_VPORT_TYPE_UNSPEC, ODP_VPORT_TYPE_NETDEV, /* network device */ @@ -210,10 +254,6 @@ enum { struct odp_flow_stats { uint64_t n_packets; /* Number of matched packets. */ uint64_t n_bytes; /* Number of matched bytes. */ - uint64_t used_sec; /* Time last used, in system monotonic time. */ - uint32_t used_nsec; - uint8_t tcp_flags; - uint8_t reserved; }; enum odp_key_type { @@ -271,39 +311,36 @@ struct odp_key_arp { ovs_be16 arp_op; }; +/** + * struct odp_flow - header with basic information about a flow. + * @dp_idx: Datapath index. + * @len: Length of this structure plus the Netlink attributes following it. + * @total_len: Total space available for kernel reply to request. + * + * Followed by &struct nlattr attributes, whose types are drawn from + * %ODP_FLOW_ATTR_*, up to a length of @len bytes including the &struct + * odp_flow header. + */ struct odp_flow { - struct odp_flow_stats stats; - struct nlattr *key; - uint32_t key_len; - struct nlattr *actions; - uint32_t actions_len; + uint32_t nlmsg_flags; + uint32_t dp_idx; + uint32_t len; + uint32_t total_len; }; -/* Flags for ODP_FLOW_PUT. */ -#define ODPPF_CREATE (1 << 0) /* Allow creating a new flow. */ -#define ODPPF_MODIFY (1 << 1) /* Allow modifying an existing flow. */ -#define ODPPF_ZERO_STATS (1 << 2) /* Zero the stats of an existing flow. */ - -/* ODP_FLOW_PUT argument. */ -struct odp_flow_put { - struct odp_flow flow; - uint32_t flags; +enum odp_flow_type { + ODP_FLOW_ATTR_UNSPEC, + ODP_FLOW_ATTR_KEY, /* Sequence of ODP_KEY_ATTR_* attributes. */ + ODP_FLOW_ATTR_ACTIONS, /* Sequence of nested ODPAT_* attributes. */ + ODP_FLOW_ATTR_STATS, /* struct odp_flow_stats. */ + ODP_FLOW_ATTR_TCP_FLAGS, /* 8-bit OR'd TCP flags. */ + ODP_FLOW_ATTR_USED, /* u64 msecs last used in monotonic time. */ + ODP_FLOW_ATTR_CLEAR, /* Flag to clear stats, tcp_flags, used. */ + ODP_FLOW_ATTR_STATE, /* u64 state for ODP_FLOW_DUMP. */ + __ODP_FLOW_ATTR_MAX }; -/* ODP_FLOW_DUMP argument. - * - * This is used to iterate through the flow table flow-by-flow. Each - * ODP_FLOW_DUMP call either stores a new odp_flow into 'flow' or stores 0 into - * flow->key_len to indicate that the end of the table has been reached, and - * updates 'state' in-place. - * - * Before the first call, zero 'state'. The format of 'state' is otherwise - * unspecified. - */ -struct odp_flow_dump { - struct odp_flow *flow; - uint32_t state[2]; -}; +#define ODP_FLOW_ATTR_MAX (__ODP_FLOW_ATTR_MAX - 1) /* Action types. */ enum odp_action_type { @@ -328,12 +365,4 @@ enum odp_action_type { #define ODPAT_MAX (__ODPAT_MAX - 1) -struct odp_execute { - struct nlattr *actions; - uint32_t actions_len; - - const void *data; - uint32_t length; -}; - #endif /* openvswitch/datapath-protocol.h */