X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=lib%2Fdpif-netdev.c;h=9f7bb6edad99713d42167de59292be19baf37e63;hb=7a97619ae4484604c15b846ce7268094e048729a;hp=a38e56bbe74a8bc25e46b30a019ee9dd2546a234;hpb=11460e2316b88f0bd0ea0005d94338d800ea16bd;p=sliver-openvswitch.git diff --git a/lib/dpif-netdev.c b/lib/dpif-netdev.c index a38e56bbe..9f7bb6eda 100644 --- a/lib/dpif-netdev.c +++ b/lib/dpif-netdev.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2009, 2010, 2011, 2012 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. @@ -70,8 +70,13 @@ 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; }; @@ -113,7 +118,7 @@ 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. */ - ovs_be16 tcp_ctl; /* Bitwise-OR of seen tcp_ctl values. */ + uint8_t tcp_flags; /* Bitwise-OR of seen tcp_flags values. */ /* Actions. */ struct nlattr *actions; @@ -165,6 +170,17 @@ 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 struct dpif * create_dpif_netdev(struct dp_netdev *dp) { @@ -248,10 +264,8 @@ 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); } } } @@ -302,6 +316,15 @@ dpif_netdev_get_stats(const struct dpif *dpif, struct dpif_dp_stats *stats) return 0; } +static const char* internal_port_type(const struct dp_netdev* dp) +{ + if (dp->class == &dpif_netdev_class) + return "tap"; + if (dp->class == &dpif_planetlab_class) + return "pltap"; + return "dummy"; +} + static int do_add_port(struct dp_netdev *dp, const char *devname, const char *type, uint16_t port_no) @@ -315,9 +338,7 @@ do_add_port(struct dp_netdev *dp, const char *devname, const char *type, /* XXX reject devices already in some dp_netdev. */ /* Open and validate network device. */ - open_type = (strcmp(type, "internal") ? type - : dp->class != &dpif_netdev_class ? "dummy" - : "tap"); + open_type = (strcmp(type, "internal") ? type : internal_port_type(dp)); error = netdev_open(devname, open_type, &netdev); if (error) { return error; @@ -362,7 +383,9 @@ choose_port(struct dpif *dpif, struct netdev *netdev) struct dp_netdev *dp = get_dp_netdev(dpif); int port_no; - if (dpif->dpif_class != &dpif_netdev_class) { + if (dpif->dpif_class != &dpif_netdev_class && + dpif->dpif_class != &dpif_planetlab_class) + { /* 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. */ @@ -396,7 +419,16 @@ dpif_netdev_port_add(struct dpif *dpif, struct netdev *netdev, struct dp_netdev *dp = get_dp_netdev(dpif); int port_no; - port_no = choose_port(dpif, netdev); + if (*port_nop != UINT16_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(dpif, netdev); + } if (port_no >= 0) { *port_nop = port_no; return do_add_port(dp, netdev_get_name(netdev), @@ -627,7 +659,7 @@ 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 @@ -702,10 +734,9 @@ 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; @@ -728,7 +759,7 @@ 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 @@ -751,7 +782,8 @@ dpif_netdev_flow_put(struct dpif *dpif, const struct dpif_flow_put *put) if (put->stats) { memset(put->stats, 0, sizeof *put->stats); } - return add_flow(dpif, &key, put->actions, put->actions_len); + return dp_netdev_flow_add(dp, &key, put->actions, + put->actions_len); } else { return EFBIG; } @@ -777,24 +809,22 @@ dpif_netdev_flow_put(struct dpif *dpif, const struct dpif_flow_put *put) } 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; @@ -895,7 +925,7 @@ dpif_netdev_execute(struct dpif *dpif, const struct dpif_execute *execute) ofpbuf_reserve(©, DP_NETDEV_HEADROOM); ofpbuf_put(©, execute->packet->data, execute->packet->size); - flow_extract(©, 0, 0, -1, &key); + flow_extract(©, 0, NULL, -1, &key); error = dpif_netdev_flow_from_nlattrs(execute->key, execute->key_len, &key); if (!error) { @@ -937,13 +967,18 @@ 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 { @@ -970,18 +1005,12 @@ 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->dl_type == htons(ETH_TYPE_IPV6)) && - key->nw_proto == IPPROTO_TCP && packet->l7) { - struct tcp_header *th = packet->l4; - flow->tcp_ctl |= th->tcp_ctl; - } + flow->tcp_flags |= packet_get_tcp_flags(packet, &flow->key); } static void @@ -994,10 +1023,10 @@ dp_netdev_port_input(struct dp_netdev *dp, struct dp_netdev_port *port, if (packet->size < ETH_HEADER_LEN) { return; } - flow_extract(packet, 0, 0, port->port_no, &key); + flow_extract(packet, 0, NULL, odp_port_to_ofp_port(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++; @@ -1070,6 +1099,7 @@ 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; @@ -1079,22 +1109,23 @@ dp_netdev_output_userspace(struct dp_netdev *dp, const struct ofpbuf *packet, return ENOBUFS; } - buf = ofpbuf_new(ODPUTIL_FLOW_KEY_BYTES + 2 + packet->size); + 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); 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; } @@ -1157,6 +1188,7 @@ execute_set_action(struct ofpbuf *packet, const struct nlattr *a) case OVS_KEY_ATTR_TUN_ID: case OVS_KEY_ATTR_PRIORITY: case OVS_KEY_ATTR_IPV6: + case OVS_KEY_ATTR_IPV4_TUNNEL: /* not implemented */ break; @@ -1242,40 +1274,48 @@ dp_netdev_execute_actions(struct dp_netdev *dp, } } +#define DPIF_NETDEV_CLASS_FUNCTIONS \ + dpif_netdev_enumerate, \ + 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", - NULL, /* enumerate */ - 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, + DPIF_NETDEV_CLASS_FUNCTIONS +}; + +const struct dpif_class dpif_planetlab_class = { + "planetlab", + DPIF_NETDEV_CLASS_FUNCTIONS }; static void @@ -1308,3 +1348,4 @@ dpif_dummy_register(bool override) dpif_dummy_register__("dummy"); } +