X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=lib%2Fodp-util.h;h=0dfbccaa9b82ca8642a974ec13ed95980abc647e;hb=HEAD;hp=16f2b156707260c6e720b2c23530d2dda609e888;hpb=31a1e58ec7236b915cd9b49d9e927ad90b5ae285;p=sliver-openvswitch.git diff --git a/lib/odp-util.h b/lib/odp-util.h index 16f2b1567..0dfbccaa9 100644 --- a/lib/odp-util.h +++ b/lib/odp-util.h @@ -1,5 +1,5 @@ /* - * Copyright (c) 2009, 2010, 2011, 2012 Nicira, Inc. + * Copyright (c) 2009, 2010, 2011, 2012, 2013 Nicira, Inc. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. @@ -23,48 +23,67 @@ #include #include #include "hash.h" +#include "hmap.h" #include "openflow/openflow.h" #include "util.h" struct ds; struct flow; +struct flow_tnl; +struct flow_wildcards; struct nlattr; struct ofpbuf; struct simap; +struct pkt_metadata; + +#define SLOW_PATH_REASONS \ + /* These reasons are mutually exclusive. */ \ + SPR(SLOW_CFM, "cfm", "Consists of CFM packets") \ + SPR(SLOW_BFD, "bfd", "Consists of BFD packets") \ + SPR(SLOW_LACP, "lacp", "Consists of LACP packets") \ + SPR(SLOW_STP, "stp", "Consists of STP packets") \ + SPR(SLOW_CONTROLLER, "controller", \ + "Sends \"packet-in\" messages to the OpenFlow controller") \ + SPR(SLOW_ACTION, "action", \ + "Uses action(s) not supported by datapath") + +/* Indexes for slow-path reasons. Client code uses "enum slow_path_reason" + * values instead of these, these are just a way to construct those. */ +enum { +#define SPR(ENUM, STRING, EXPLANATION) ENUM##_INDEX, + SLOW_PATH_REASONS +#undef SPR +}; + +/* Reasons why a subfacet might not be fast-pathable. + * + * Each reason is a separate bit to allow reasons to be combined. */ +enum slow_path_reason { +#define SPR(ENUM, STRING, EXPLANATION) ENUM = 1 << ENUM##_INDEX, + SLOW_PATH_REASONS +#undef SPR +}; -#define OVSP_NONE UINT16_MAX - -static inline uint16_t -ofp_port_to_odp_port(uint16_t ofp_port) -{ - switch (ofp_port) { - case OFPP_LOCAL: - return OVSP_LOCAL; - case OFPP_NONE: - return OVSP_NONE; - default: - return ofp_port; - } -} - -static inline uint16_t -odp_port_to_ofp_port(uint16_t odp_port) -{ - switch (odp_port) { - case OVSP_LOCAL: - return OFPP_LOCAL; - case OVSP_NONE: - return OFPP_NONE; - default: - return odp_port; - } -} +const char *slow_path_reason_to_explanation(enum slow_path_reason); + +#define ODPP_LOCAL ODP_PORT_C(OVSP_LOCAL) +#define ODPP_NONE ODP_PORT_C(UINT32_MAX) void format_odp_actions(struct ds *, const struct nlattr *odp_actions, size_t actions_len); int odp_actions_from_string(const char *, const struct simap *port_names, struct ofpbuf *odp_actions); +/* A map from odp port number to its name. */ +struct odp_portno_names { + struct hmap_node hmap_node; /* A node in a port number to name hmap. */ + odp_port_t port_no; /* Port number in the datapath. */ + char *name; /* Name associated with the above 'port_no'. */ +}; + +void odp_portno_names_set(struct hmap *portno_names, odp_port_t port_no, + char *port_name); +void odp_portno_names_destroy(struct hmap *portno_names); /* The maximum number of bytes that odp_flow_key_from_flow() appends to a * buffer. This is the upper bound on the length of a nlattr-formatted flow * key that ovs-vswitchd fully understands. @@ -76,26 +95,34 @@ int odp_actions_from_string(const char *, const struct simap *port_names, * The longest nlattr-formatted flow key appended by odp_flow_key_from_flow() * would be: * - * struct pad nl hdr total - * ------ --- ------ ----- - * OVS_KEY_ATTR_PRIORITY 4 -- 4 8 - * OVS_KEY_ATTR_TUN_ID 8 -- 4 12 - * OVS_KEY_ATTR_IN_PORT 4 -- 4 8 - * OVS_KEY_ATTR_ETHERNET 12 -- 4 16 - * OVS_KEY_ATTR_ETHERTYPE 2 2 4 8 (outer VLAN ethertype) - * OVS_KEY_ATTR_8021Q 4 -- 4 8 - * OVS_KEY_ATTR_ENCAP 0 -- 4 4 (VLAN encapsulation) - * OVS_KEY_ATTR_ETHERTYPE 2 2 4 8 (inner VLAN ethertype) - * OVS_KEY_ATTR_IPV6 40 -- 4 44 - * OVS_KEY_ATTR_ICMPV6 2 2 4 8 - * OVS_KEY_ATTR_ND 28 -- 4 32 - * ------------------------------------------------- - * total 156 + * struct pad nl hdr total + * ------ --- ------ ----- + * OVS_KEY_ATTR_PRIORITY 4 -- 4 8 + * OVS_KEY_ATTR_TUNNEL 0 -- 4 4 + * - OVS_TUNNEL_KEY_ATTR_ID 8 -- 4 12 + * - OVS_TUNNEL_KEY_ATTR_IPV4_SRC 4 -- 4 8 + * - OVS_TUNNEL_KEY_ATTR_IPV4_DST 4 -- 4 8 + * - OVS_TUNNEL_KEY_ATTR_TOS 1 3 4 8 + * - OVS_TUNNEL_KEY_ATTR_TTL 1 3 4 8 + * - OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT 0 -- 4 4 + * - OVS_TUNNEL_KEY_ATTR_CSUM 0 -- 4 4 + * OVS_KEY_ATTR_IN_PORT 4 -- 4 8 + * OVS_KEY_ATTR_SKB_MARK 4 -- 4 8 + * OVS_KEY_ATTR_ETHERNET 12 -- 4 16 + * OVS_KEY_ATTR_ETHERTYPE 2 2 4 8 (outer VLAN ethertype) + * OVS_KEY_ATTR_8021Q 4 -- 4 8 + * OVS_KEY_ATTR_ENCAP 0 -- 4 4 (VLAN encapsulation) + * OVS_KEY_ATTR_ETHERTYPE 2 2 4 8 (inner VLAN ethertype) + * OVS_KEY_ATTR_IPV6 40 -- 4 44 + * OVS_KEY_ATTR_ICMPV6 2 2 4 8 + * OVS_KEY_ATTR_ND 28 -- 4 32 + * ---------------------------------------------------------- + * total 208 * * We include some slack space in case the calculation isn't quite right or we * add another field and forget to adjust this value. */ -#define ODPUTIL_FLOW_KEY_BYTES 200 +#define ODPUTIL_FLOW_KEY_BYTES 256 /* A buffer with sufficient size and alignment to hold an nlattr-formatted flow * key. An array of "struct nlattr" might not, in theory, be sufficiently @@ -104,14 +131,32 @@ struct odputil_keybuf { uint32_t keybuf[DIV_ROUND_UP(ODPUTIL_FLOW_KEY_BYTES, 4)]; }; +enum odp_key_fitness odp_tun_key_from_attr(const struct nlattr *, + struct flow_tnl *); + +void odp_flow_format(const struct nlattr *key, size_t key_len, + const struct nlattr *mask, size_t mask_len, + const struct hmap *portno_names, struct ds *, + bool verbose); void odp_flow_key_format(const struct nlattr *, size_t, struct ds *); -int odp_flow_key_from_string(const char *s, const struct simap *port_names, - struct ofpbuf *); +int odp_flow_from_string(const char *s, + const struct simap *port_names, + struct ofpbuf *, struct ofpbuf *); -void odp_flow_key_from_flow(struct ofpbuf *, const struct flow *); +void odp_flow_key_from_flow(struct ofpbuf *, const struct flow * flow, + const struct flow *mask, odp_port_t odp_in_port); +void odp_flow_key_from_mask(struct ofpbuf *, const struct flow *mask, + const struct flow *flow, uint32_t odp_in_port, + size_t max_mpls_depth); uint32_t odp_flow_key_hash(const struct nlattr *, size_t); +/* Estimated space needed for metadata. */ +enum { ODP_KEY_METADATA_SIZE = 9 * 8 }; +void odp_key_from_pkt_metadata(struct ofpbuf *, const struct pkt_metadata *); +void odp_key_to_pkt_metadata(const struct nlattr *key, size_t key_len, + struct pkt_metadata *md); + /* How well a kernel-provided flow key (a sequence of OVS_KEY_ATTR_* * attributes) matches OVS userspace expectations. * @@ -127,10 +172,17 @@ enum odp_key_fitness { }; enum odp_key_fitness odp_flow_key_to_flow(const struct nlattr *, size_t, struct flow *); +enum odp_key_fitness odp_flow_key_to_mask(const struct nlattr *key, size_t len, + struct flow *mask, + const struct flow *flow); const char *odp_key_fitness_to_string(enum odp_key_fitness); -void commit_odp_actions(const struct flow *, struct flow *base, - struct ofpbuf *odp_actions); +void commit_odp_tunnel_action(const struct flow *, struct flow *base, + struct ofpbuf *odp_actions); +enum slow_path_reason commit_odp_actions(const struct flow *, + struct flow *base, + struct ofpbuf *odp_actions, + struct flow_wildcards *wc); /* ofproto-dpif interface. * @@ -141,8 +193,10 @@ void commit_odp_actions(const struct flow *, struct flow *base, enum user_action_cookie_type { USER_ACTION_COOKIE_UNSPEC, - USER_ACTION_COOKIE_SFLOW, /* Packet for sFlow sampling. */ - USER_ACTION_COOKIE_SLOW_PATH /* Userspace must process this flow. */ + USER_ACTION_COOKIE_SFLOW, /* Packet for per-bridge sFlow sampling. */ + USER_ACTION_COOKIE_SLOW_PATH, /* Userspace must process this flow. */ + USER_ACTION_COOKIE_FLOW_SAMPLE, /* Packet for per-flow sampling. */ + USER_ACTION_COOKIE_IPFIX, /* Packet for per-bridge IPFIX sampling. */ }; /* user_action_cookie is passed as argument to OVS_ACTION_ATTR_USERSPACE. @@ -161,28 +215,27 @@ union user_action_cookie { uint16_t unused; uint32_t reason; /* enum slow_path_reason. */ } slow_path; + + struct { + uint16_t type; /* USER_ACTION_COOKIE_FLOW_SAMPLE. */ + uint16_t probability; /* Sampling probability. */ + uint32_t collector_set_id; /* ID of IPFIX collector set. */ + uint32_t obs_domain_id; /* Observation Domain ID. */ + uint32_t obs_point_id; /* Observation Point ID. */ + } flow_sample; + + struct { + uint16_t type; /* USER_ACTION_COOKIE_IPFIX. */ + } ipfix; }; -BUILD_ASSERT_DECL(sizeof(union user_action_cookie) == 8); +BUILD_ASSERT_DECL(sizeof(union user_action_cookie) == 16); size_t odp_put_userspace_action(uint32_t pid, - const union user_action_cookie *, + const void *userdata, size_t userdata_size, struct ofpbuf *odp_actions); - -/* Reasons why a subfacet might not be fast-pathable. */ -enum slow_path_reason { - /* These reasons are mutually exclusive. */ - SLOW_CFM = 1 << 0, /* CFM packets need per-packet processing. */ - SLOW_LACP = 1 << 1, /* LACP packets need per-packet processing. */ - SLOW_STP = 1 << 2, /* STP packets need per-packet processing. */ - SLOW_IN_BAND = 1 << 3, /* In-band control needs every packet. */ - - /* Mutually exclusive with SLOW_CFM, SLOW_LACP, SLOW_STP. - * Could possibly appear with SLOW_IN_BAND. */ - SLOW_CONTROLLER = 1 << 4, /* Packets must go to OpenFlow controller. */ - - /* This can appear on its own, or, theoretically at least, along with any - * other combination of reasons. */ - SLOW_MATCH = 1 << 5, /* Datapath can't match specifically enough. */ -}; +void odp_put_tunnel_action(const struct flow_tnl *tunnel, + struct ofpbuf *odp_actions); +void odp_put_pkt_mark_action(const uint32_t pkt_mark, + struct ofpbuf *odp_actions); #endif /* odp-util.h */