X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=lib%2Fdpif-netdev.c;h=6e7a5cca0198f50a0c217e54569d56afac28ac6c;hb=d1673b006d53fdea72c0744e835362ed1917f879;hp=5f7220840ee8eca6151014bf9324cfbb8a30237a;hpb=3d8c95357fc8fa657c5ed176a464d0c9d33622e9;p=sliver-openvswitch.git diff --git a/lib/dpif-netdev.c b/lib/dpif-netdev.c index 5f7220840..6e7a5cca0 100644 --- a/lib/dpif-netdev.c +++ b/lib/dpif-netdev.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2009, 2010, 2011 Nicira Networks. + * Copyright (c) 2009, 2010, 2011, 2012 Nicira, Inc. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. @@ -17,7 +17,6 @@ #include #include "dpif.h" -#include #include #include #include @@ -47,7 +46,9 @@ #include "ofpbuf.h" #include "packets.h" #include "poll-loop.h" +#include "random.h" #include "shash.h" +#include "sset.h" #include "timeval.h" #include "util.h" #include "vlog.h" @@ -68,8 +69,13 @@ enum { MAX_QUEUE_LEN = 128 }; /* Maximum number of packets per queue. */ enum { QUEUE_MASK = MAX_QUEUE_LEN - 1 }; BUILD_ASSERT_DECL(IS_POW2(MAX_QUEUE_LEN)); +struct dp_netdev_upcall { + struct dpif_upcall upcall; /* Queued upcall information. */ + struct ofpbuf buf; /* ofpbuf instance for upcall.packet. */ +}; + struct dp_netdev_queue { - struct dpif_upcall *upcalls[MAX_QUEUE_LEN]; + struct dp_netdev_upcall upcalls[MAX_QUEUE_LEN]; unsigned int head, tail; }; @@ -80,18 +86,15 @@ struct dp_netdev { int open_cnt; bool destroyed; - bool drop_frags; /* Drop all IP fragments, if true. */ struct dp_netdev_queue queues[N_QUEUES]; struct hmap flow_table; /* Flow table. */ /* Statistics. */ - long long int n_frags; /* Number of dropped IP fragments. */ long long int n_hit; /* Number of flow table matches. */ long long int n_missed; /* Number of flow table misses. */ long long int n_lost; /* Number of misses not passed to client. */ /* Ports. */ - int n_ports; struct dp_netdev_port *ports[MAX_PORTS]; struct list port_list; unsigned int serial; @@ -102,7 +105,7 @@ struct dp_netdev_port { int port_no; /* Index into dp_netdev's 'ports'. */ struct list node; /* Element in dp_netdev's 'port_list'. */ struct netdev *netdev; - bool internal; /* Internal port? */ + char *type; /* Port type as requested by user. */ }; /* A flow in dp_netdev's 'flow_table'. */ @@ -114,7 +117,7 @@ struct dp_netdev_flow { long long int used; /* Last used time, in monotonic msecs. */ long long int packet_count; /* Number of packets matched. */ long long int byte_count; /* Number of bytes matched. */ - uint16_t tcp_ctl; /* Bitwise-OR of seen tcp_ctl values. */ + uint8_t tcp_flags; /* Bitwise-OR of seen tcp_flags values. */ /* Actions. */ struct nlattr *actions; @@ -125,7 +128,6 @@ struct dp_netdev_flow { struct dpif_netdev { struct dpif dpif; struct dp_netdev *dp; - int listen_mask; unsigned int dp_serial; }; @@ -135,31 +137,29 @@ static struct shash dp_netdevs = SHASH_INITIALIZER(&dp_netdevs); /* Maximum port MTU seen so far. */ static int max_mtu = ETH_PAYLOAD_MAX; -static int get_port_by_number(struct dp_netdev *, uint16_t port_no, +static int get_port_by_number(struct dp_netdev *, uint32_t port_no, struct dp_netdev_port **portp); static int get_port_by_name(struct dp_netdev *, const char *devname, struct dp_netdev_port **portp); static void dp_netdev_free(struct dp_netdev *); static void dp_netdev_flow_flush(struct dp_netdev *); static int do_add_port(struct dp_netdev *, const char *devname, - const char *type, uint16_t port_no); -static int do_del_port(struct dp_netdev *, uint16_t port_no); + const char *type, uint32_t port_no); +static int do_del_port(struct dp_netdev *, uint32_t port_no); static int dpif_netdev_open(const struct dpif_class *, const char *name, bool create, struct dpif **); -static int dp_netdev_output_control(struct dp_netdev *, const struct ofpbuf *, +static int dp_netdev_output_userspace(struct dp_netdev *, const struct ofpbuf *, int queue_no, const struct flow *, uint64_t arg); -static int dp_netdev_execute_actions(struct dp_netdev *, - struct ofpbuf *, struct flow *, - const struct nlattr *actions, - size_t actions_len); - -static struct dpif_class dpif_dummy_class; +static void dp_netdev_execute_actions(struct dp_netdev *, + struct ofpbuf *, struct flow *, + const struct nlattr *actions, + size_t actions_len); static struct dpif_netdev * dpif_netdev_cast(const struct dpif *dpif) { - assert(dpif->dpif_class->open == dpif_netdev_open); + ovs_assert(dpif->dpif_class->open == dpif_netdev_open); return CONTAINER_OF(dpif, struct dpif_netdev, dpif); } @@ -169,6 +169,33 @@ get_dp_netdev(const struct dpif *dpif) return dpif_netdev_cast(dpif)->dp; } +static int +dpif_netdev_enumerate(struct sset *all_dps) +{ + struct shash_node *node; + + SHASH_FOR_EACH(node, &dp_netdevs) { + sset_add(all_dps, node->name); + } + return 0; +} + +static const char * +dpif_netdev_port_open_type(const struct dpif_class *class, const char *type) +{ + return strcmp(type, "internal") ? type + : class != &dpif_netdev_class ? "dummy" + : "tap"; +} + +static const char * +dpif_planetlab_port_open_type(const struct dpif_class *class, const char *type) +{ + return strcmp(type, "internal") ? type + : class != &dpif_planetlab_class ? "dummy" + : "pltap"; +} + static struct dpif * create_dpif_netdev(struct dp_netdev *dp) { @@ -180,12 +207,51 @@ create_dpif_netdev(struct dp_netdev *dp) dpif = xmalloc(sizeof *dpif); dpif_init(&dpif->dpif, dp->class, dp->name, netflow_id >> 8, netflow_id); dpif->dp = dp; - dpif->listen_mask = 0; dpif->dp_serial = dp->serial; return &dpif->dpif; } +static int +choose_port(struct dp_netdev *dp, const char *name) +{ + int port_no; + + if (dp->class != &dpif_netdev_class && + dp->class != &dpif_planetlab_class) { + const char *p; + int start_no = 0; + + /* If the port name begins with "br", start the number search at + * 100 to make writing tests easier. */ + if (!strncmp(name, "br", 2)) { + start_no = 100; + } + + /* If the port name contains a number, try to assign that port number. + * This can make writing unit tests easier because port numbers are + * predictable. */ + for (p = name; *p != '\0'; p++) { + if (isdigit((unsigned char) *p)) { + port_no = start_no + strtol(p, NULL, 10); + if (port_no > 0 && port_no < MAX_PORTS + && !dp->ports[port_no]) { + return port_no; + } + break; + } + } + } + + for (port_no = 1; port_no < MAX_PORTS; port_no++) { + if (!dp->ports[port_no]) { + return port_no; + } + } + + return -1; +} + static int create_dp_netdev(const char *name, const struct dpif_class *class, struct dp_netdev **dpp) @@ -198,13 +264,13 @@ create_dp_netdev(const char *name, const struct dpif_class *class, dp->class = class; dp->name = xstrdup(name); dp->open_cnt = 0; - dp->drop_frags = false; for (i = 0; i < N_QUEUES; i++) { dp->queues[i].head = dp->queues[i].tail = 0; } hmap_init(&dp->flow_table); list_init(&dp->port_list); - error = do_add_port(dp, name, "internal", ODPP_LOCAL); + + error = do_add_port(dp, name, "internal", OVSP_LOCAL); if (error) { dp_netdev_free(dp); return error; @@ -231,7 +297,7 @@ dpif_netdev_open(const struct dpif_class *class, const char *name, if (error) { return error; } - assert(dp != NULL); + ovs_assert(dp != NULL); } } else { if (dp->class != class) { @@ -254,10 +320,8 @@ dp_netdev_purge_queues(struct dp_netdev *dp) struct dp_netdev_queue *q = &dp->queues[i]; while (q->tail != q->head) { - struct dpif_upcall *upcall = q->upcalls[q->tail++ & QUEUE_MASK]; - - ofpbuf_delete(upcall->packet); - free(upcall); + struct dp_netdev_upcall *u = &q->upcalls[q->tail++ & QUEUE_MASK]; + ofpbuf_uninit(&u->buf); } } } @@ -265,10 +329,10 @@ dp_netdev_purge_queues(struct dp_netdev *dp) static void dp_netdev_free(struct dp_netdev *dp) { + struct dp_netdev_port *port, *next; + dp_netdev_flow_flush(dp); - while (dp->n_ports > 0) { - struct dp_netdev_port *port = CONTAINER_OF( - dp->port_list.next, struct dp_netdev_port, node); + LIST_FOR_EACH_SAFE (port, next, node, &dp->port_list) { do_del_port(dp, port->port_no); } dp_netdev_purge_queues(dp); @@ -281,7 +345,7 @@ static void dpif_netdev_close(struct dpif *dpif) { struct dp_netdev *dp = get_dp_netdev(dpif); - assert(dp->open_cnt > 0); + ovs_assert(dp->open_cnt > 0); if (--dp->open_cnt == 0 && dp->destroyed) { shash_find_and_delete(&dp_netdevs, dp->name); dp_netdev_free(dp); @@ -298,71 +362,45 @@ dpif_netdev_destroy(struct dpif *dpif) } static int -dpif_netdev_get_stats(const struct dpif *dpif, struct odp_stats *stats) +dpif_netdev_get_stats(const struct dpif *dpif, struct dpif_dp_stats *stats) { struct dp_netdev *dp = get_dp_netdev(dpif); - memset(stats, 0, sizeof *stats); - stats->n_frags = dp->n_frags; + stats->n_flows = hmap_count(&dp->flow_table); stats->n_hit = dp->n_hit; stats->n_missed = dp->n_missed; stats->n_lost = dp->n_lost; return 0; } -static int -dpif_netdev_get_drop_frags(const struct dpif *dpif, bool *drop_fragsp) -{ - struct dp_netdev *dp = get_dp_netdev(dpif); - *drop_fragsp = dp->drop_frags; - return 0; -} - -static int -dpif_netdev_set_drop_frags(struct dpif *dpif, bool drop_frags) -{ - struct dp_netdev *dp = get_dp_netdev(dpif); - dp->drop_frags = drop_frags; - return 0; -} - static int do_add_port(struct dp_netdev *dp, const char *devname, const char *type, - uint16_t port_no) + uint32_t port_no) { struct dp_netdev_port *port; - struct netdev_options netdev_options; struct netdev *netdev; - bool internal; + const char *open_type; int mtu; int error; /* XXX reject devices already in some dp_netdev. */ - if (type[0] == '\0' || !strcmp(type, "system")) { - internal = false; - } else if (!strcmp(type, "internal")) { - internal = true; - } else { - VLOG_WARN("%s: unsupported port type %s", devname, type); - return EINVAL; - } /* Open and validate network device. */ - memset(&netdev_options, 0, sizeof netdev_options); - netdev_options.name = devname; - netdev_options.ethertype = NETDEV_ETH_TYPE_ANY; - if (dp->class == &dpif_dummy_class) { - netdev_options.type = "dummy"; - } else if (internal) { - netdev_options.type = "tap"; - } - - error = netdev_open(&netdev_options, &netdev); + open_type = dpif_netdev_port_open_type(dp->class, type); + error = netdev_open(devname, open_type, &netdev); if (error) { return error; } /* XXX reject loopback devices */ /* XXX reject non-Ethernet devices */ + error = netdev_listen(netdev); + if (error) { + VLOG_ERR("%s: cannot receive packets on this network device (%s)", + devname, strerror(errno)); + netdev_close(netdev); + return error; + } + error = netdev_turn_flags_on(netdev, NETDEV_PROMISC, false); if (error) { netdev_close(netdev); @@ -372,16 +410,15 @@ do_add_port(struct dp_netdev *dp, const char *devname, const char *type, port = xmalloc(sizeof *port); port->port_no = port_no; port->netdev = netdev; - port->internal = internal; + port->type = xstrdup(type); - netdev_get_mtu(netdev, &mtu); - if (mtu > max_mtu) { + error = netdev_get_mtu(netdev, &mtu); + if (!error) { max_mtu = mtu; } list_push_back(&dp->port_list, &port->node); dp->ports[port_no] = port; - dp->n_ports++; dp->serial++; return 0; @@ -389,37 +426,45 @@ do_add_port(struct dp_netdev *dp, const char *devname, const char *type, static int dpif_netdev_port_add(struct dpif *dpif, struct netdev *netdev, - uint16_t *port_nop) + uint32_t *port_nop) { struct dp_netdev *dp = get_dp_netdev(dpif); int port_no; - for (port_no = 0; port_no < MAX_PORTS; port_no++) { - if (!dp->ports[port_no]) { - *port_nop = port_no; - return do_add_port(dp, netdev_get_name(netdev), - netdev_get_type(netdev), port_no); + if (*port_nop != UINT32_MAX) { + if (*port_nop >= MAX_PORTS) { + return EFBIG; + } else if (dp->ports[*port_nop]) { + return EBUSY; } + port_no = *port_nop; + } else { + port_no = choose_port(dp, netdev_get_name(netdev)); + } + if (port_no >= 0) { + *port_nop = port_no; + return do_add_port(dp, netdev_get_name(netdev), + netdev_get_type(netdev), port_no); } return EFBIG; } static int -dpif_netdev_port_del(struct dpif *dpif, uint16_t port_no) +dpif_netdev_port_del(struct dpif *dpif, uint32_t port_no) { struct dp_netdev *dp = get_dp_netdev(dpif); - return port_no == ODPP_LOCAL ? EINVAL : do_del_port(dp, port_no); + return port_no == OVSP_LOCAL ? EINVAL : do_del_port(dp, port_no); } static bool -is_valid_port_number(uint16_t port_no) +is_valid_port_number(uint32_t port_no) { return port_no < MAX_PORTS; } static int get_port_by_number(struct dp_netdev *dp, - uint16_t port_no, struct dp_netdev_port **portp) + uint32_t port_no, struct dp_netdev_port **portp) { if (!is_valid_port_number(port_no)) { *portp = NULL; @@ -446,7 +491,7 @@ get_port_by_name(struct dp_netdev *dp, } static int -do_del_port(struct dp_netdev *dp, uint16_t port_no) +do_del_port(struct dp_netdev *dp, uint32_t port_no) { struct dp_netdev_port *port; char *name; @@ -459,11 +504,11 @@ do_del_port(struct dp_netdev *dp, uint16_t port_no) list_remove(&port->node); dp->ports[port->port_no] = NULL; - dp->n_ports--; dp->serial++; name = xstrdup(netdev_get_name(port->netdev)); netdev_close(port->netdev); + free(port->type); free(name); free(port); @@ -476,12 +521,12 @@ answer_port_query(const struct dp_netdev_port *port, struct dpif_port *dpif_port) { dpif_port->name = xstrdup(netdev_get_name(port->netdev)); - dpif_port->type = xstrdup(port->internal ? "internal" : "system"); + dpif_port->type = xstrdup(port->type); dpif_port->port_no = port->port_no; } static int -dpif_netdev_port_query_by_number(const struct dpif *dpif, uint16_t port_no, +dpif_netdev_port_query_by_number(const struct dpif *dpif, uint32_t port_no, struct dpif_port *dpif_port) { struct dp_netdev *dp = get_dp_netdev(dpif); @@ -489,7 +534,7 @@ dpif_netdev_port_query_by_number(const struct dpif *dpif, uint16_t port_no, int error; error = get_port_by_number(dp, port_no, &port); - if (!error) { + if (!error && dpif_port) { answer_port_query(port, dpif_port); } return error; @@ -504,7 +549,7 @@ dpif_netdev_port_query_by_name(const struct dpif *dpif, const char *devname, int error; error = get_port_by_name(dp, devname, &port); - if (!error) { + if (!error && dpif_port) { answer_port_query(port, dpif_port); } return error; @@ -568,7 +613,7 @@ dpif_netdev_port_dump_next(const struct dpif *dpif, void *state_, free(state->name); state->name = xstrdup(netdev_get_name(port->netdev)); dpif_port->name = state->name; - dpif_port->type = port->internal ? "internal" : "system"; + dpif_port->type = port->type; dpif_port->port_no = port->port_no; state->port_no = port_no + 1; return 0; @@ -626,14 +671,14 @@ get_dpif_flow_stats(struct dp_netdev_flow *flow, struct dpif_flow_stats *stats) stats->n_packets = flow->packet_count; stats->n_bytes = flow->byte_count; stats->used = flow->used; - stats->tcp_flags = TCP_FLAGS(flow->tcp_ctl); + stats->tcp_flags = flow->tcp_flags; } static int dpif_netdev_flow_from_nlattrs(const struct nlattr *key, uint32_t key_len, struct flow *flow) { - if (odp_flow_key_to_flow(key, key_len, flow)) { + if (odp_flow_key_to_flow(key, key_len, flow) != ODP_FIT_PERFECT) { /* This should not happen: it indicates that odp_flow_key_from_flow() * and odp_flow_key_to_flow() disagree on the acceptable form of a * flow. Log the problem as an error, with enough details to enable @@ -652,6 +697,12 @@ dpif_netdev_flow_from_nlattrs(const struct nlattr *key, uint32_t key_len, return EINVAL; } + if (flow->in_port < OFPP_MAX + ? flow->in_port >= MAX_PORTS + : flow->in_port != OFPP_LOCAL && flow->in_port != OFPP_NONE) { + return EINVAL; + } + return 0; } @@ -684,79 +735,10 @@ dpif_netdev_flow_get(const struct dpif *dpif, return 0; } -static int -dpif_netdev_validate_actions(const struct nlattr *actions, - size_t actions_len, bool *mutates) -{ - const struct nlattr *a; - unsigned int left; - - *mutates = false; - NL_ATTR_FOR_EACH (a, left, actions, actions_len) { - uint16_t type = nl_attr_type(a); - int len = odp_action_len(type); - - if (len != nl_attr_get_size(a)) { - return EINVAL; - } - - switch (type) { - case ODPAT_OUTPUT: - if (nl_attr_get_u32(a) >= MAX_PORTS) { - return EINVAL; - } - break; - - case ODPAT_CONTROLLER: - case ODPAT_DROP_SPOOFED_ARP: - break; - - case ODPAT_SET_DL_TCI: - *mutates = true; - if (nl_attr_get_be16(a) & htons(VLAN_CFI)) { - return EINVAL; - } - break; - - case ODPAT_SET_NW_TOS: - *mutates = true; - if (nl_attr_get_u8(a) & IP_ECN_MASK) { - return EINVAL; - } - break; - - case ODPAT_STRIP_VLAN: - case ODPAT_SET_DL_SRC: - case ODPAT_SET_DL_DST: - case ODPAT_SET_NW_SRC: - case ODPAT_SET_NW_DST: - case ODPAT_SET_TP_SRC: - case ODPAT_SET_TP_DST: - *mutates = true; - break; - - case ODPAT_SET_TUNNEL: - case ODPAT_SET_PRIORITY: - case ODPAT_POP_PRIORITY: - default: - return EOPNOTSUPP; - } - } - return 0; -} - static int set_flow_actions(struct dp_netdev_flow *flow, const struct nlattr *actions, size_t actions_len) { - bool mutates; - int error; - - error = dpif_netdev_validate_actions(actions, actions_len, &mutates); - if (error) { - return error; - } - flow->actions = xrealloc(flow->actions, actions_len); flow->actions_len = actions_len; memcpy(flow->actions, actions, actions_len); @@ -764,10 +746,9 @@ set_flow_actions(struct dp_netdev_flow *flow, } static int -add_flow(struct dpif *dpif, const struct flow *key, - const struct nlattr *actions, size_t actions_len) +dp_netdev_flow_add(struct dp_netdev *dp, const struct flow *key, + const struct nlattr *actions, size_t actions_len) { - struct dp_netdev *dp = get_dp_netdev(dpif); struct dp_netdev_flow *flow; int error; @@ -790,33 +771,31 @@ clear_stats(struct dp_netdev_flow *flow) flow->used = 0; flow->packet_count = 0; flow->byte_count = 0; - flow->tcp_ctl = 0; + flow->tcp_flags = 0; } static int -dpif_netdev_flow_put(struct dpif *dpif, enum dpif_flow_put_flags flags, - const struct nlattr *nl_key, size_t nl_key_len, - const struct nlattr *actions, size_t actions_len, - struct dpif_flow_stats *stats) +dpif_netdev_flow_put(struct dpif *dpif, const struct dpif_flow_put *put) { struct dp_netdev *dp = get_dp_netdev(dpif); struct dp_netdev_flow *flow; struct flow key; int error; - error = dpif_netdev_flow_from_nlattrs(nl_key, nl_key_len, &key); + error = dpif_netdev_flow_from_nlattrs(put->key, put->key_len, &key); if (error) { return error; } flow = dp_netdev_lookup_flow(dp, &key); if (!flow) { - if (flags & DPIF_FP_CREATE) { + if (put->flags & DPIF_FP_CREATE) { if (hmap_count(&dp->flow_table) < MAX_FLOWS) { - if (stats) { - memset(stats, 0, sizeof *stats); + if (put->stats) { + memset(put->stats, 0, sizeof *put->stats); } - return add_flow(dpif, &key, actions, actions_len); + return dp_netdev_flow_add(dp, &key, put->actions, + put->actions_len); } else { return EFBIG; } @@ -824,13 +803,13 @@ dpif_netdev_flow_put(struct dpif *dpif, enum dpif_flow_put_flags flags, return ENOENT; } } else { - if (flags & DPIF_FP_MODIFY) { - int error = set_flow_actions(flow, actions, actions_len); + if (put->flags & DPIF_FP_MODIFY) { + int error = set_flow_actions(flow, put->actions, put->actions_len); if (!error) { - if (stats) { - get_dpif_flow_stats(flow, stats); + if (put->stats) { + get_dpif_flow_stats(flow, put->stats); } - if (flags & DPIF_FP_ZERO_STATS) { + if (put->flags & DPIF_FP_ZERO_STATS) { clear_stats(flow); } } @@ -842,24 +821,22 @@ dpif_netdev_flow_put(struct dpif *dpif, enum dpif_flow_put_flags flags, } static int -dpif_netdev_flow_del(struct dpif *dpif, - const struct nlattr *nl_key, size_t nl_key_len, - struct dpif_flow_stats *stats) +dpif_netdev_flow_del(struct dpif *dpif, const struct dpif_flow_del *del) { struct dp_netdev *dp = get_dp_netdev(dpif); struct dp_netdev_flow *flow; struct flow key; int error; - error = dpif_netdev_flow_from_nlattrs(nl_key, nl_key_len, &key); + error = dpif_netdev_flow_from_nlattrs(del->key, del->key_len, &key); if (error) { return error; } flow = dp_netdev_lookup_flow(dp, &key); if (flow) { - if (stats) { - get_dpif_flow_stats(flow, stats); + if (del->stats) { + get_dpif_flow_stats(flow, del->stats); } dp_netdev_free_flow(dp, flow); return 0; @@ -872,7 +849,7 @@ struct dp_netdev_flow_state { uint32_t bucket; uint32_t offset; struct nlattr *actions; - uint32_t keybuf[ODPUTIL_FLOW_KEY_U32S]; + struct odputil_keybuf keybuf; struct dpif_flow_stats stats; }; @@ -909,9 +886,8 @@ dpif_netdev_flow_dump_next(const struct dpif *dpif, void *state_, if (key) { struct ofpbuf buf; - ofpbuf_use_stack(&buf, state->keybuf, sizeof state->keybuf); - odp_flow_key_from_flow(&buf, &flow->key); - assert(buf.base == state->keybuf); + ofpbuf_use_stack(&buf, &state->keybuf, sizeof state->keybuf); + odp_flow_key_from_flow(&buf, &flow->key, flow->key.in_port); *key = buf.data; *key_len = buf.size; @@ -944,73 +920,58 @@ dpif_netdev_flow_dump_done(const struct dpif *dpif OVS_UNUSED, void *state_) } static int -dpif_netdev_execute(struct dpif *dpif, - const struct nlattr *actions, size_t actions_len, - const struct ofpbuf *packet) +dpif_netdev_execute(struct dpif *dpif, const struct dpif_execute *execute) { struct dp_netdev *dp = get_dp_netdev(dpif); struct ofpbuf copy; - bool mutates; struct flow key; int error; - if (packet->size < ETH_HEADER_LEN || packet->size > UINT16_MAX) { + if (execute->packet->size < ETH_HEADER_LEN || + execute->packet->size > UINT16_MAX) { return EINVAL; } - error = dpif_netdev_validate_actions(actions, actions_len, &mutates); - if (error) { - return error; - } + /* Make a deep copy of 'packet', because we might modify its data. */ + ofpbuf_init(©, DP_NETDEV_HEADROOM + execute->packet->size); + ofpbuf_reserve(©, DP_NETDEV_HEADROOM); + ofpbuf_put(©, execute->packet->data, execute->packet->size); - if (mutates) { - /* We need a deep copy of 'packet' since we're going to modify its - * data. */ - ofpbuf_init(©, DP_NETDEV_HEADROOM + packet->size); - ofpbuf_reserve(©, DP_NETDEV_HEADROOM); - ofpbuf_put(©, packet->data, packet->size); - } else { - /* We still need a shallow copy of 'packet', even though we won't - * modify its data, because flow_extract() modifies packet->l2, etc. - * We could probably get away with modifying those but it's more polite - * if we don't. */ - copy = *packet; - } - flow_extract(©, 0, -1, &key); - error = dp_netdev_execute_actions(dp, ©, &key, actions, actions_len); - if (mutates) { - ofpbuf_uninit(©); + flow_extract(©, 0, 0, NULL, -1, &key); + error = dpif_netdev_flow_from_nlattrs(execute->key, execute->key_len, + &key); + if (!error) { + dp_netdev_execute_actions(dp, ©, &key, + execute->actions, execute->actions_len); } + + ofpbuf_uninit(©); return error; } static int -dpif_netdev_recv_get_mask(const struct dpif *dpif, int *listen_mask) +dpif_netdev_recv_set(struct dpif *dpif OVS_UNUSED, bool enable OVS_UNUSED) { - struct dpif_netdev *dpif_netdev = dpif_netdev_cast(dpif); - *listen_mask = dpif_netdev->listen_mask; return 0; } static int -dpif_netdev_recv_set_mask(struct dpif *dpif, int listen_mask) +dpif_netdev_queue_to_priority(const struct dpif *dpif OVS_UNUSED, + uint32_t queue_id, uint32_t *priority) { - struct dpif_netdev *dpif_netdev = dpif_netdev_cast(dpif); - dpif_netdev->listen_mask = listen_mask; + *priority = queue_id; return 0; } static struct dp_netdev_queue * find_nonempty_queue(struct dpif *dpif) { - struct dpif_netdev *dpif_netdev = dpif_netdev_cast(dpif); struct dp_netdev *dp = get_dp_netdev(dpif); - int mask = dpif_netdev->listen_mask; int i; for (i = 0; i < N_QUEUES; i++) { struct dp_netdev_queue *q = &dp->queues[i]; - if (q->head != q->tail && mask & (1u << i)) { + if (q->head != q->tail) { return q; } } @@ -1018,13 +979,18 @@ find_nonempty_queue(struct dpif *dpif) } static int -dpif_netdev_recv(struct dpif *dpif, struct dpif_upcall *upcall) +dpif_netdev_recv(struct dpif *dpif, struct dpif_upcall *upcall, + struct ofpbuf *buf) { struct dp_netdev_queue *q = find_nonempty_queue(dpif); if (q) { - struct dpif_upcall *u = q->upcalls[q->tail++ & QUEUE_MASK]; - *upcall = *u; - free(u); + struct dp_netdev_upcall *u = &q->upcalls[q->tail++ & QUEUE_MASK]; + + *upcall = u->upcall; + upcall->packet = buf; + + ofpbuf_uninit(buf); + *buf = u->buf; return 0; } else { @@ -1051,16 +1017,12 @@ dpif_netdev_recv_purge(struct dpif *dpif) } static void -dp_netdev_flow_used(struct dp_netdev_flow *flow, struct flow *key, - const struct ofpbuf *packet) +dp_netdev_flow_used(struct dp_netdev_flow *flow, const struct ofpbuf *packet) { flow->used = time_msec(); flow->packet_count++; flow->byte_count += packet->size; - if (key->dl_type == htons(ETH_TYPE_IP) && key->nw_proto == IPPROTO_TCP) { - struct tcp_header *th = packet->l4; - flow->tcp_ctl |= th->tcp_ctl; - } + flow->tcp_flags |= packet_get_tcp_flags(packet, &flow->key); } static void @@ -1073,211 +1035,70 @@ dp_netdev_port_input(struct dp_netdev *dp, struct dp_netdev_port *port, if (packet->size < ETH_HEADER_LEN) { return; } - if (flow_extract(packet, 0, port->port_no, &key) && dp->drop_frags) { - dp->n_frags++; - return; - } - + flow_extract(packet, 0, 0, NULL, port->port_no, &key); flow = dp_netdev_lookup_flow(dp, &key); if (flow) { - dp_netdev_flow_used(flow, &key, packet); + dp_netdev_flow_used(flow, packet); dp_netdev_execute_actions(dp, packet, &key, flow->actions, flow->actions_len); dp->n_hit++; } else { dp->n_missed++; - dp_netdev_output_control(dp, packet, DPIF_UC_MISS, &key, 0); + dp_netdev_output_userspace(dp, packet, DPIF_UC_MISS, &key, 0); } } static void -dp_netdev_run(void) +dpif_netdev_run(struct dpif *dpif) { - struct shash_node *node; + struct dp_netdev *dp = get_dp_netdev(dpif); + struct dp_netdev_port *port; struct ofpbuf packet; ofpbuf_init(&packet, DP_NETDEV_HEADROOM + VLAN_ETH_HEADER_LEN + max_mtu); - SHASH_FOR_EACH (node, &dp_netdevs) { - struct dp_netdev *dp = node->data; - struct dp_netdev_port *port; - - LIST_FOR_EACH (port, node, &dp->port_list) { - int error; - /* Reset packet contents. */ - ofpbuf_clear(&packet); - ofpbuf_reserve(&packet, DP_NETDEV_HEADROOM); - - error = netdev_recv(port->netdev, &packet); - if (!error) { - dp_netdev_port_input(dp, port, &packet); - } else if (error != EAGAIN && error != EOPNOTSUPP) { - static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); - VLOG_ERR_RL(&rl, "error receiving data from %s: %s", - netdev_get_name(port->netdev), strerror(error)); - } + LIST_FOR_EACH (port, node, &dp->port_list) { + int error; + + /* Reset packet contents. */ + ofpbuf_clear(&packet); + ofpbuf_reserve(&packet, DP_NETDEV_HEADROOM); + + error = netdev_recv(port->netdev, &packet); + if (!error) { + dp_netdev_port_input(dp, port, &packet); + } else if (error != EAGAIN && error != EOPNOTSUPP) { + static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); + VLOG_ERR_RL(&rl, "error receiving data from %s: %s", + netdev_get_name(port->netdev), strerror(error)); } } ofpbuf_uninit(&packet); } static void -dp_netdev_wait(void) -{ - struct shash_node *node; - - SHASH_FOR_EACH (node, &dp_netdevs) { - struct dp_netdev *dp = node->data; - struct dp_netdev_port *port; - - LIST_FOR_EACH (port, node, &dp->port_list) { - netdev_recv_wait(port->netdev); - } - } -} - - -/* Modify the TCI field of 'packet'. If a VLAN tag is present, its TCI field - * is replaced by 'tci'. If a VLAN tag is not present, one is added with the - * TCI field set to 'tci'. - */ -static void -dp_netdev_set_dl_tci(struct ofpbuf *packet, uint16_t tci) +dpif_netdev_wait(struct dpif *dpif) { - struct vlan_eth_header *veh; - struct eth_header *eh; - - eh = packet->l2; - if (packet->size >= sizeof(struct vlan_eth_header) - && eh->eth_type == htons(ETH_TYPE_VLAN)) { - veh = packet->l2; - veh->veth_tci = tci; - } else { - /* Insert new 802.1Q header. */ - struct vlan_eth_header tmp; - memcpy(tmp.veth_dst, eh->eth_dst, ETH_ADDR_LEN); - memcpy(tmp.veth_src, eh->eth_src, ETH_ADDR_LEN); - tmp.veth_type = htons(ETH_TYPE_VLAN); - tmp.veth_tci = tci; - tmp.veth_next_type = eh->eth_type; - - veh = ofpbuf_push_uninit(packet, VLAN_HEADER_LEN); - memcpy(veh, &tmp, sizeof tmp); - packet->l2 = (char*)packet->l2 - VLAN_HEADER_LEN; - } -} - -static void -dp_netdev_strip_vlan(struct ofpbuf *packet) -{ - struct vlan_eth_header *veh = packet->l2; - if (packet->size >= sizeof *veh - && veh->veth_type == htons(ETH_TYPE_VLAN)) { - struct eth_header tmp; - - memcpy(tmp.eth_dst, veh->veth_dst, ETH_ADDR_LEN); - memcpy(tmp.eth_src, veh->veth_src, ETH_ADDR_LEN); - tmp.eth_type = veh->veth_next_type; + struct dp_netdev *dp = get_dp_netdev(dpif); + struct dp_netdev_port *port; - ofpbuf_pull(packet, VLAN_HEADER_LEN); - packet->l2 = (char*)packet->l2 + VLAN_HEADER_LEN; - memcpy(packet->data, &tmp, sizeof tmp); + LIST_FOR_EACH (port, node, &dp->port_list) { + netdev_recv_wait(port->netdev); } } static void -dp_netdev_set_dl_src(struct ofpbuf *packet, const uint8_t dl_addr[ETH_ADDR_LEN]) -{ - struct eth_header *eh = packet->l2; - memcpy(eh->eth_src, dl_addr, sizeof eh->eth_src); -} - -static void -dp_netdev_set_dl_dst(struct ofpbuf *packet, const uint8_t dl_addr[ETH_ADDR_LEN]) +dp_netdev_set_dl(struct ofpbuf *packet, const struct ovs_key_ethernet *eth_key) { struct eth_header *eh = packet->l2; - memcpy(eh->eth_dst, dl_addr, sizeof eh->eth_dst); -} - -static bool -is_ip(const struct ofpbuf *packet, const struct flow *key) -{ - return key->dl_type == htons(ETH_TYPE_IP) && packet->l4; -} - -static void -dp_netdev_set_nw_addr(struct ofpbuf *packet, const struct flow *key, - const struct nlattr *a) -{ - if (is_ip(packet, key)) { - struct ip_header *nh = packet->l3; - ovs_be32 ip = nl_attr_get_be32(a); - uint16_t type = nl_attr_type(a); - uint32_t *field; - - field = type == ODPAT_SET_NW_SRC ? &nh->ip_src : &nh->ip_dst; - if (key->nw_proto == IP_TYPE_TCP && packet->l7) { - struct tcp_header *th = packet->l4; - th->tcp_csum = recalc_csum32(th->tcp_csum, *field, ip); - } else if (key->nw_proto == IP_TYPE_UDP && packet->l7) { - struct udp_header *uh = packet->l4; - if (uh->udp_csum) { - uh->udp_csum = recalc_csum32(uh->udp_csum, *field, ip); - if (!uh->udp_csum) { - uh->udp_csum = 0xffff; - } - } - } - nh->ip_csum = recalc_csum32(nh->ip_csum, *field, ip); - *field = ip; - } -} - -static void -dp_netdev_set_nw_tos(struct ofpbuf *packet, const struct flow *key, - uint8_t nw_tos) -{ - if (is_ip(packet, key)) { - struct ip_header *nh = packet->l3; - uint8_t *field = &nh->ip_tos; - - /* Set the DSCP bits and preserve the ECN bits. */ - uint8_t new = nw_tos | (nh->ip_tos & IP_ECN_MASK); - nh->ip_csum = recalc_csum16(nh->ip_csum, htons((uint16_t)*field), - htons((uint16_t) new)); - *field = new; - } -} - -static void -dp_netdev_set_tp_port(struct ofpbuf *packet, const struct flow *key, - const struct nlattr *a) -{ - if (is_ip(packet, key)) { - uint16_t type = nl_attr_type(a); - ovs_be16 port = nl_attr_get_be16(a); - uint16_t *field; - - if (key->nw_proto == IPPROTO_TCP && packet->l7) { - struct tcp_header *th = packet->l4; - field = type == ODPAT_SET_TP_SRC ? &th->tcp_src : &th->tcp_dst; - th->tcp_csum = recalc_csum16(th->tcp_csum, *field, port); - *field = port; - } else if (key->nw_proto == IPPROTO_UDP && packet->l7) { - struct udp_header *uh = packet->l4; - field = type == ODPAT_SET_TP_SRC ? &uh->udp_src : &uh->udp_dst; - uh->udp_csum = recalc_csum16(uh->udp_csum, *field, port); - *field = port; - } else { - return; - } - } + memcpy(eh->eth_src, eth_key->eth_src, sizeof eh->eth_src); + memcpy(eh->eth_dst, eth_key->eth_dst, sizeof eh->eth_dst); } static void dp_netdev_output_port(struct dp_netdev *dp, struct ofpbuf *packet, - uint16_t out_port) + uint32_t out_port) { struct dp_netdev_port *p = dp->ports[out_port]; if (p) { @@ -1286,10 +1107,11 @@ dp_netdev_output_port(struct dp_netdev *dp, struct ofpbuf *packet, } static int -dp_netdev_output_control(struct dp_netdev *dp, const struct ofpbuf *packet, +dp_netdev_output_userspace(struct dp_netdev *dp, const struct ofpbuf *packet, int queue_no, const struct flow *flow, uint64_t arg) { struct dp_netdev_queue *q = &dp->queues[queue_no]; + struct dp_netdev_upcall *u; struct dpif_upcall *upcall; struct ofpbuf *buf; size_t key_len; @@ -1299,54 +1121,134 @@ dp_netdev_output_control(struct dp_netdev *dp, const struct ofpbuf *packet, return ENOBUFS; } - buf = ofpbuf_new(ODPUTIL_FLOW_KEY_BYTES + 2 + packet->size); - odp_flow_key_from_flow(buf, flow); + u = &q->upcalls[q->head++ & QUEUE_MASK]; + + buf = &u->buf; + ofpbuf_init(buf, ODPUTIL_FLOW_KEY_BYTES + 2 + packet->size); + odp_flow_key_from_flow(buf, flow, flow->in_port); key_len = buf->size; ofpbuf_pull(buf, key_len); ofpbuf_reserve(buf, 2); ofpbuf_put(buf, packet->data, packet->size); - upcall = xzalloc(sizeof *upcall); + upcall = &u->upcall; upcall->type = queue_no; upcall->packet = buf; upcall->key = buf->base; upcall->key_len = key_len; upcall->userdata = arg; - q->upcalls[++q->head & QUEUE_MASK] = upcall; - return 0; } -/* Returns true if 'packet' is an invalid Ethernet+IPv4 ARP packet: one with - * screwy or truncated header fields or one whose inner and outer Ethernet - * address differ. */ -static bool -dp_netdev_is_spoofed_arp(struct ofpbuf *packet, const struct flow *key) +static void +dp_netdev_sample(struct dp_netdev *dp, + struct ofpbuf *packet, struct flow *key, + const struct nlattr *action) { - struct arp_eth_header *arp; - struct eth_header *eth; - ptrdiff_t l3_size; + const struct nlattr *subactions = NULL; + const struct nlattr *a; + size_t left; - if (key->dl_type != htons(ETH_TYPE_ARP)) { - return false; - } + NL_NESTED_FOR_EACH_UNSAFE (a, left, action) { + int type = nl_attr_type(a); - l3_size = (char *) ofpbuf_end(packet) - (char *) packet->l3; - if (l3_size < sizeof(struct arp_eth_header)) { - return true; + switch ((enum ovs_sample_attr) type) { + case OVS_SAMPLE_ATTR_PROBABILITY: + if (random_uint32() >= nl_attr_get_u32(a)) { + return; + } + break; + + case OVS_SAMPLE_ATTR_ACTIONS: + subactions = a; + break; + + case OVS_SAMPLE_ATTR_UNSPEC: + case __OVS_SAMPLE_ATTR_MAX: + default: + NOT_REACHED(); + } } - eth = packet->l2; - arp = packet->l3; - return (arp->ar_hrd != htons(ARP_HRD_ETHERNET) - || arp->ar_pro != htons(ARP_PRO_IP) - || arp->ar_hln != ETH_HEADER_LEN - || arp->ar_pln != 4 - || !eth_addr_equals(arp->ar_sha, eth->eth_src)); + dp_netdev_execute_actions(dp, packet, key, nl_attr_get(subactions), + nl_attr_get_size(subactions)); } -static int +static void +dp_netdev_action_userspace(struct dp_netdev *dp, + struct ofpbuf *packet, struct flow *key, + const struct nlattr *a) +{ + const struct nlattr *userdata_attr; + uint64_t userdata; + + userdata_attr = nl_attr_find_nested(a, OVS_USERSPACE_ATTR_USERDATA); + userdata = userdata_attr ? nl_attr_get_u64(userdata_attr) : 0; + dp_netdev_output_userspace(dp, packet, DPIF_UC_ACTION, key, userdata); +} + +static void +execute_set_action(struct ofpbuf *packet, const struct nlattr *a) +{ + enum ovs_key_attr type = nl_attr_type(a); + const struct ovs_key_ipv4 *ipv4_key; + const struct ovs_key_ipv6 *ipv6_key; + const struct ovs_key_tcp *tcp_key; + const struct ovs_key_udp *udp_key; + + switch (type) { + case OVS_KEY_ATTR_TUN_ID: + case OVS_KEY_ATTR_PRIORITY: + case OVS_KEY_ATTR_SKB_MARK: + case OVS_KEY_ATTR_TUNNEL: + /* not implemented */ + break; + + case OVS_KEY_ATTR_ETHERNET: + dp_netdev_set_dl(packet, + nl_attr_get_unspec(a, sizeof(struct ovs_key_ethernet))); + break; + + case OVS_KEY_ATTR_IPV4: + ipv4_key = nl_attr_get_unspec(a, sizeof(struct ovs_key_ipv4)); + packet_set_ipv4(packet, ipv4_key->ipv4_src, ipv4_key->ipv4_dst, + ipv4_key->ipv4_tos, ipv4_key->ipv4_ttl); + break; + + case OVS_KEY_ATTR_IPV6: + ipv6_key = nl_attr_get_unspec(a, sizeof(struct ovs_key_ipv6)); + packet_set_ipv6(packet, ipv6_key->ipv6_proto, ipv6_key->ipv6_src, + ipv6_key->ipv6_dst, ipv6_key->ipv6_tclass, + ipv6_key->ipv6_label, ipv6_key->ipv6_hlimit); + break; + + case OVS_KEY_ATTR_TCP: + tcp_key = nl_attr_get_unspec(a, sizeof(struct ovs_key_tcp)); + packet_set_tcp_port(packet, tcp_key->tcp_src, tcp_key->tcp_dst); + break; + + case OVS_KEY_ATTR_UDP: + udp_key = nl_attr_get_unspec(a, sizeof(struct ovs_key_udp)); + packet_set_udp_port(packet, udp_key->udp_src, udp_key->udp_dst); + break; + + case OVS_KEY_ATTR_UNSPEC: + case OVS_KEY_ATTR_ENCAP: + case OVS_KEY_ATTR_ETHERTYPE: + case OVS_KEY_ATTR_IN_PORT: + case OVS_KEY_ATTR_VLAN: + case OVS_KEY_ATTR_ICMP: + case OVS_KEY_ATTR_ICMPV6: + case OVS_KEY_ATTR_ARP: + case OVS_KEY_ATTR_ND: + case __OVS_KEY_ATTR_MAX: + default: + NOT_REACHED(); + } +} + +static void dp_netdev_execute_actions(struct dp_netdev *dp, struct ofpbuf *packet, struct flow *key, const struct nlattr *actions, @@ -1356,100 +1258,115 @@ dp_netdev_execute_actions(struct dp_netdev *dp, unsigned int left; NL_ATTR_FOR_EACH_UNSAFE (a, left, actions, actions_len) { - switch (nl_attr_type(a)) { - case ODPAT_OUTPUT: - dp_netdev_output_port(dp, packet, nl_attr_get_u32(a)); - break; + int type = nl_attr_type(a); - case ODPAT_CONTROLLER: - dp_netdev_output_control(dp, packet, DPIF_UC_ACTION, - key, nl_attr_get_u64(a)); - break; - - case ODPAT_SET_DL_TCI: - dp_netdev_set_dl_tci(packet, nl_attr_get_be16(a)); - break; - - case ODPAT_STRIP_VLAN: - dp_netdev_strip_vlan(packet); + switch ((enum ovs_action_attr) type) { + case OVS_ACTION_ATTR_OUTPUT: + dp_netdev_output_port(dp, packet, nl_attr_get_u32(a)); break; - case ODPAT_SET_DL_SRC: - dp_netdev_set_dl_src(packet, nl_attr_get_unspec(a, ETH_ADDR_LEN)); + case OVS_ACTION_ATTR_USERSPACE: + dp_netdev_action_userspace(dp, packet, key, a); break; - case ODPAT_SET_DL_DST: - dp_netdev_set_dl_dst(packet, nl_attr_get_unspec(a, ETH_ADDR_LEN)); + case OVS_ACTION_ATTR_PUSH_VLAN: { + const struct ovs_action_push_vlan *vlan = nl_attr_get(a); + eth_push_vlan(packet, vlan->vlan_tci); break; + } - case ODPAT_SET_NW_SRC: - case ODPAT_SET_NW_DST: - dp_netdev_set_nw_addr(packet, key, a); + case OVS_ACTION_ATTR_POP_VLAN: + eth_pop_vlan(packet); break; - case ODPAT_SET_NW_TOS: - dp_netdev_set_nw_tos(packet, key, nl_attr_get_u8(a)); + case OVS_ACTION_ATTR_SET: + execute_set_action(packet, nl_attr_get(a)); break; - case ODPAT_SET_TP_SRC: - case ODPAT_SET_TP_DST: - dp_netdev_set_tp_port(packet, key, a); + case OVS_ACTION_ATTR_SAMPLE: + dp_netdev_sample(dp, packet, key, a); break; - case ODPAT_DROP_SPOOFED_ARP: - if (dp_netdev_is_spoofed_arp(packet, key)) { - return 0; - } + case OVS_ACTION_ATTR_UNSPEC: + case __OVS_ACTION_ATTR_MAX: + NOT_REACHED(); } } - return 0; } +#define DPIF_NETDEV_CLASS_FUNCTIONS(PORT_OPEN_TYPE) \ + dpif_netdev_enumerate, \ + PORT_OPEN_TYPE, \ + dpif_netdev_open, \ + dpif_netdev_close, \ + dpif_netdev_destroy, \ + dpif_netdev_run, \ + dpif_netdev_wait, \ + dpif_netdev_get_stats, \ + dpif_netdev_port_add, \ + dpif_netdev_port_del, \ + dpif_netdev_port_query_by_number, \ + dpif_netdev_port_query_by_name, \ + dpif_netdev_get_max_ports, \ + NULL, /* port_get_pid */ \ + dpif_netdev_port_dump_start, \ + dpif_netdev_port_dump_next, \ + dpif_netdev_port_dump_done, \ + dpif_netdev_port_poll, \ + dpif_netdev_port_poll_wait, \ + dpif_netdev_flow_get, \ + dpif_netdev_flow_put, \ + dpif_netdev_flow_del, \ + dpif_netdev_flow_flush, \ + dpif_netdev_flow_dump_start, \ + dpif_netdev_flow_dump_next, \ + dpif_netdev_flow_dump_done, \ + dpif_netdev_execute, \ + NULL, /* operate */ \ + dpif_netdev_recv_set, \ + dpif_netdev_queue_to_priority, \ + dpif_netdev_recv, \ + dpif_netdev_recv_wait, \ + dpif_netdev_recv_purge, \ + const struct dpif_class dpif_netdev_class = { "netdev", - dp_netdev_run, - dp_netdev_wait, - NULL, /* enumerate */ - dpif_netdev_open, - dpif_netdev_close, - dpif_netdev_destroy, - dpif_netdev_get_stats, - dpif_netdev_get_drop_frags, - dpif_netdev_set_drop_frags, - dpif_netdev_port_add, - dpif_netdev_port_del, - dpif_netdev_port_query_by_number, - dpif_netdev_port_query_by_name, - dpif_netdev_get_max_ports, - dpif_netdev_port_dump_start, - dpif_netdev_port_dump_next, - dpif_netdev_port_dump_done, - dpif_netdev_port_poll, - dpif_netdev_port_poll_wait, - dpif_netdev_flow_get, - dpif_netdev_flow_put, - dpif_netdev_flow_del, - dpif_netdev_flow_flush, - dpif_netdev_flow_dump_start, - dpif_netdev_flow_dump_next, - dpif_netdev_flow_dump_done, - dpif_netdev_execute, - dpif_netdev_recv_get_mask, - dpif_netdev_recv_set_mask, - NULL, /* get_sflow_probability */ - NULL, /* set_sflow_probability */ - NULL, /* queue_to_priority */ - dpif_netdev_recv, - dpif_netdev_recv_wait, - dpif_netdev_recv_purge, + DPIF_NETDEV_CLASS_FUNCTIONS(dpif_netdev_port_open_type) +}; + +const struct dpif_class dpif_planetlab_class = { + "planetlab", + DPIF_NETDEV_CLASS_FUNCTIONS(dpif_planetlab_port_open_type) }; +static void +dpif_dummy_register__(const char *type) +{ + struct dpif_class *class; + + class = xmalloc(sizeof *class); + *class = dpif_netdev_class; + class->type = xstrdup(type); + dp_register_provider(class); +} + void -dpif_dummy_register(void) +dpif_dummy_register(bool override) { - if (!dpif_dummy_class.type) { - dpif_dummy_class = dpif_netdev_class; - dpif_dummy_class.type = "dummy"; - dp_register_provider(&dpif_dummy_class); + if (override) { + struct sset types; + const char *type; + + sset_init(&types); + dp_enumerate_types(&types); + SSET_FOR_EACH (type, &types) { + if (!dp_unregister_provider(type)) { + dpif_dummy_register__(type); + } + } + sset_destroy(&types); } + + dpif_dummy_register__("dummy"); } +