X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=lib%2Flearning-switch.c;h=887a365edb824227f4f8888d9890712964f39a0f;hb=2e3fa633aad59f9687e2b6e3aad3b0a308aa89fc;hp=9e36db8841d04b195eee8ad06882b8b6caebb77a;hpb=9e1fd49b0cf494315c82f27c651486ef82e83446;p=openvswitch diff --git a/lib/learning-switch.c b/lib/learning-switch.c index 9e36db88..887a365e 100644 --- a/lib/learning-switch.c +++ b/lib/learning-switch.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2008, 2009, 2010, 2011, 2012 Nicira Networks. + * Copyright (c) 2008, 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. @@ -29,7 +29,9 @@ #include "hmap.h" #include "mac-learning.h" #include "ofpbuf.h" +#include "ofp-actions.h" #include "ofp-errors.h" +#include "ofp-msgs.h" #include "ofp-parse.h" #include "ofp-print.h" #include "ofp-util.h" @@ -37,6 +39,7 @@ #include "poll-loop.h" #include "rconn.h" #include "shash.h" +#include "simap.h" #include "timeval.h" #include "vconn.h" #include "vlog.h" @@ -55,6 +58,7 @@ struct lswitch { * Otherwise, the switch processes every packet. */ int max_idle; + enum ofputil_protocol protocol; unsigned long long int datapath_id; time_t last_features_request; struct mac_learning *ml; /* NULL to act as hub instead of switch. */ @@ -78,9 +82,9 @@ static void queue_tx(struct lswitch *, struct rconn *, struct ofpbuf *); static void send_features_request(struct lswitch *, struct rconn *); static enum ofperr process_switch_features(struct lswitch *, - struct ofp_switch_features *); + struct ofp_header *); static void process_packet_in(struct lswitch *, struct rconn *, - const struct ofp_packet_in *); + const struct ofp_header *); static void process_echo_request(struct lswitch *, struct rconn *, const struct ofp_header *); @@ -91,6 +95,7 @@ static void process_echo_request(struct lswitch *, struct rconn *, struct lswitch * lswitch_create(struct rconn *rconn, const struct lswitch_config *cfg) { + enum ofputil_protocol protocol; struct lswitch *sw; sw = xzalloc(sizeof *sw); @@ -110,27 +115,27 @@ lswitch_create(struct rconn *rconn, const struct lswitch_config *cfg) /* Try to wildcard as many fields as possible, but we cannot * wildcard all fields. We need in_port to detect moves. We need * Ethernet source and dest and VLAN VID to do L2 learning. */ - ofpfw = (OFPFW_DL_TYPE | OFPFW_DL_VLAN_PCP - | OFPFW_NW_SRC_ALL | OFPFW_NW_DST_ALL - | OFPFW_NW_TOS | OFPFW_NW_PROTO - | OFPFW_TP_SRC | OFPFW_TP_DST); + ofpfw = (OFPFW10_DL_TYPE | OFPFW10_DL_VLAN_PCP + | OFPFW10_NW_SRC_ALL | OFPFW10_NW_DST_ALL + | OFPFW10_NW_TOS | OFPFW10_NW_PROTO + | OFPFW10_TP_SRC | OFPFW10_TP_DST); } else { ofpfw = cfg->wildcards; } - ofputil_wildcard_from_openflow(ofpfw, &sw->wc); + ofputil_wildcard_from_ofpfw10(ofpfw, &sw->wc); } sw->default_queue = cfg->default_queue; hmap_init(&sw->queue_numbers); shash_init(&sw->queue_names); if (cfg->port_queues) { - struct shash_node *node; + struct simap_node *node; - SHASH_FOR_EACH (node, cfg->port_queues) { + SIMAP_FOR_EACH (node, cfg->port_queues) { struct lswitch_port *port = xmalloc(sizeof *port); hmap_node_nullify(&port->hmap_node); - port->queue_id = (uintptr_t) node->data; + port->queue_id = node->data; shash_add(&sw->queue_names, node->name, port); } } @@ -138,18 +143,13 @@ lswitch_create(struct rconn *rconn, const struct lswitch_config *cfg) sw->queued = rconn_packet_counter_create(); send_features_request(sw, rconn); + protocol = ofputil_protocol_from_ofp_version(rconn_get_version(rconn)); if (cfg->default_flows) { enum ofputil_protocol usable_protocols; - enum ofputil_protocol protocol; struct ofpbuf *msg = NULL; - int ofp_version; int error = 0; size_t i; - /* Figure out the initial protocol on the connection. */ - ofp_version = rconn_get_version(rconn); - protocol = ofputil_protocol_from_ofp_version(ofp_version); - /* If the initial protocol isn't good enough for default_flows, then * pick one that will work and encode messages to set up that * protocol. @@ -178,9 +178,9 @@ lswitch_create(struct rconn *rconn, const struct lswitch_config *cfg) if (error) { VLOG_INFO_RL(&rl, "%s: failed to queue default flows (%s)", rconn_get_name(rconn), strerror(error)); - ofpbuf_delete(msg); } } + sw->protocol = protocol; return sw; } @@ -229,77 +229,78 @@ void lswitch_process_packet(struct lswitch *sw, struct rconn *rconn, const struct ofpbuf *msg) { - const struct ofp_header *oh = msg->data; - const struct ofputil_msg_type *type; + enum ofptype type; + struct ofpbuf b; + + b = *msg; + if (ofptype_pull(&type, &b)) { + return; + } if (sw->datapath_id == 0 - && oh->type != OFPT_ECHO_REQUEST - && oh->type != OFPT_FEATURES_REPLY) { + && type != OFPTYPE_ECHO_REQUEST + && type != OFPTYPE_FEATURES_REPLY) { send_features_request(sw, rconn); return; } - ofputil_decode_msg_type(oh, &type); - switch (ofputil_msg_type_code(type)) { - case OFPUTIL_OFPT_ECHO_REQUEST: + switch (type) { + case OFPTYPE_ECHO_REQUEST: process_echo_request(sw, rconn, msg->data); break; - case OFPUTIL_OFPT_FEATURES_REPLY: + case OFPTYPE_FEATURES_REPLY: process_switch_features(sw, msg->data); break; - case OFPUTIL_OFPT_PACKET_IN: + case OFPTYPE_PACKET_IN: process_packet_in(sw, rconn, msg->data); break; - case OFPUTIL_OFPT_FLOW_REMOVED: + case OFPTYPE_FLOW_REMOVED: /* Nothing to do. */ break; - case OFPUTIL_MSG_INVALID: - case OFPUTIL_OFPT_HELLO: - case OFPUTIL_OFPT_ERROR: - case OFPUTIL_OFPT_ECHO_REPLY: - case OFPUTIL_OFPT_FEATURES_REQUEST: - case OFPUTIL_OFPT_GET_CONFIG_REQUEST: - case OFPUTIL_OFPT_GET_CONFIG_REPLY: - case OFPUTIL_OFPT_SET_CONFIG: - case OFPUTIL_OFPT_PORT_STATUS: - case OFPUTIL_OFPT_PACKET_OUT: - case OFPUTIL_OFPT_FLOW_MOD: - case OFPUTIL_OFPT_PORT_MOD: - case OFPUTIL_OFPT_BARRIER_REQUEST: - case OFPUTIL_OFPT_BARRIER_REPLY: - case OFPUTIL_OFPT_QUEUE_GET_CONFIG_REQUEST: - case OFPUTIL_OFPT_QUEUE_GET_CONFIG_REPLY: - case OFPUTIL_OFPST_DESC_REQUEST: - case OFPUTIL_OFPST_FLOW_REQUEST: - case OFPUTIL_OFPST_AGGREGATE_REQUEST: - case OFPUTIL_OFPST_TABLE_REQUEST: - case OFPUTIL_OFPST_PORT_REQUEST: - case OFPUTIL_OFPST_QUEUE_REQUEST: - case OFPUTIL_OFPST_DESC_REPLY: - case OFPUTIL_OFPST_FLOW_REPLY: - case OFPUTIL_OFPST_QUEUE_REPLY: - case OFPUTIL_OFPST_PORT_REPLY: - case OFPUTIL_OFPST_TABLE_REPLY: - case OFPUTIL_OFPST_AGGREGATE_REPLY: - case OFPUTIL_NXT_ROLE_REQUEST: - case OFPUTIL_NXT_ROLE_REPLY: - case OFPUTIL_NXT_FLOW_MOD_TABLE_ID: - case OFPUTIL_NXT_SET_FLOW_FORMAT: - case OFPUTIL_NXT_SET_PACKET_IN_FORMAT: - case OFPUTIL_NXT_PACKET_IN: - case OFPUTIL_NXT_FLOW_MOD: - case OFPUTIL_NXT_FLOW_REMOVED: - case OFPUTIL_NXT_FLOW_AGE: - case OFPUTIL_NXT_SET_ASYNC_CONFIG: - case OFPUTIL_NXT_SET_CONTROLLER_ID: - case OFPUTIL_NXST_FLOW_REQUEST: - case OFPUTIL_NXST_AGGREGATE_REQUEST: - case OFPUTIL_NXST_FLOW_REPLY: - case OFPUTIL_NXST_AGGREGATE_REPLY: + case OFPTYPE_HELLO: + case OFPTYPE_ERROR: + case OFPTYPE_ECHO_REPLY: + case OFPTYPE_FEATURES_REQUEST: + case OFPTYPE_GET_CONFIG_REQUEST: + case OFPTYPE_GET_CONFIG_REPLY: + case OFPTYPE_SET_CONFIG: + case OFPTYPE_PORT_STATUS: + case OFPTYPE_PACKET_OUT: + case OFPTYPE_FLOW_MOD: + case OFPTYPE_PORT_MOD: + case OFPTYPE_BARRIER_REQUEST: + case OFPTYPE_BARRIER_REPLY: + case OFPTYPE_DESC_STATS_REQUEST: + case OFPTYPE_DESC_STATS_REPLY: + case OFPTYPE_FLOW_STATS_REQUEST: + case OFPTYPE_FLOW_STATS_REPLY: + case OFPTYPE_AGGREGATE_STATS_REQUEST: + case OFPTYPE_AGGREGATE_STATS_REPLY: + case OFPTYPE_TABLE_STATS_REQUEST: + case OFPTYPE_TABLE_STATS_REPLY: + case OFPTYPE_PORT_STATS_REQUEST: + case OFPTYPE_PORT_STATS_REPLY: + case OFPTYPE_QUEUE_STATS_REQUEST: + case OFPTYPE_QUEUE_STATS_REPLY: + case OFPTYPE_PORT_DESC_STATS_REQUEST: + case OFPTYPE_PORT_DESC_STATS_REPLY: + case OFPTYPE_ROLE_REQUEST: + case OFPTYPE_ROLE_REPLY: + case OFPTYPE_SET_FLOW_FORMAT: + case OFPTYPE_FLOW_MOD_TABLE_ID: + case OFPTYPE_SET_PACKET_IN_FORMAT: + case OFPTYPE_FLOW_AGE: + case OFPTYPE_SET_ASYNC_CONFIG: + case OFPTYPE_SET_CONTROLLER_ID: + case OFPTYPE_FLOW_MONITOR_STATS_REQUEST: + case OFPTYPE_FLOW_MONITOR_STATS_REPLY: + case OFPTYPE_FLOW_MONITOR_CANCEL: + case OFPTYPE_FLOW_MONITOR_PAUSED: + case OFPTYPE_FLOW_MONITOR_RESUMED: default: if (VLOG_IS_DBG_ENABLED()) { char *s = ofp_to_string(msg->data, msg->size, 2); @@ -319,11 +320,12 @@ send_features_request(struct lswitch *sw, struct rconn *rconn) struct ofp_switch_config *osc; /* Send OFPT_FEATURES_REQUEST. */ - make_openflow(sizeof(struct ofp_header), OFPT_FEATURES_REQUEST, &b); + b = ofpraw_alloc(OFPRAW_OFPT_FEATURES_REQUEST, OFP10_VERSION, 0); queue_tx(sw, rconn, b); /* Send OFPT_SET_CONFIG. */ - osc = make_openflow(sizeof *osc, OFPT_SET_CONFIG, &b); + b = ofpraw_alloc(OFPRAW_OFPT_SET_CONFIG, OFP10_VERSION, sizeof *osc); + osc = ofpbuf_put_uninit(b, sizeof *osc); osc->miss_send_len = htons(OFP_DEFAULT_MISS_SEND_LEN); queue_tx(sw, rconn, b); @@ -348,14 +350,14 @@ queue_tx(struct lswitch *sw, struct rconn *rconn, struct ofpbuf *b) } static enum ofperr -process_switch_features(struct lswitch *sw, struct ofp_switch_features *osf) +process_switch_features(struct lswitch *sw, struct ofp_header *oh) { struct ofputil_switch_features features; struct ofputil_phy_port port; enum ofperr error; struct ofpbuf b; - error = ofputil_decode_switch_features(osf, &features, &b); + error = ofputil_decode_switch_features(oh, &features, &b); if (error) { VLOG_ERR("received invalid switch feature reply (%s)", ofperr_to_string(error)); @@ -364,7 +366,7 @@ process_switch_features(struct lswitch *sw, struct ofp_switch_features *osf) sw->datapath_id = features.datapath_id; - while (!ofputil_pull_switch_features_port(&b, &port)) { + while (!ofputil_pull_phy_port(oh->version, &b, &port)) { struct lswitch_port *lp = shash_find_data(&sw->queue_names, port.name); if (lp && hmap_node_is_null(&lp->hmap_node)) { lp->port_no = port.port_no; @@ -437,67 +439,58 @@ get_queue_id(const struct lswitch *sw, uint16_t in_port) static void process_packet_in(struct lswitch *sw, struct rconn *rconn, - const struct ofp_packet_in *opi) + const struct ofp_header *oh) { - uint16_t in_port = ntohs(opi->in_port); + struct ofputil_packet_in pi; uint32_t queue_id; uint16_t out_port; - struct ofp_action_header actions[2]; - size_t actions_len; + uint64_t ofpacts_stub[64 / 8]; + struct ofpbuf ofpacts; struct ofputil_packet_out po; + enum ofperr error; - size_t pkt_ofs, pkt_len; struct ofpbuf pkt; struct flow flow; + error = ofputil_decode_packet_in(&pi, oh); + if (error) { + VLOG_WARN_RL(&rl, "failed to decode packet-in: %s", + ofperr_to_string(error)); + return; + } + /* Ignore packets sent via output to OFPP_CONTROLLER. This library never * uses such an action. You never know what experiments might be going on, * though, and it seems best not to interfere with them. */ - if (opi->reason != OFPR_NO_MATCH) { + if (pi.reason != OFPR_NO_MATCH) { return; } /* Extract flow data from 'opi' into 'flow'. */ - pkt_ofs = offsetof(struct ofp_packet_in, data); - pkt_len = ntohs(opi->header.length) - pkt_ofs; - ofpbuf_use_const(&pkt, opi->data, pkt_len); - flow_extract(&pkt, 0, 0, in_port, &flow); + ofpbuf_use_const(&pkt, pi.packet, pi.packet_len); + flow_extract(&pkt, 0, pi.fmd.tun_id, pi.fmd.in_port, &flow); /* Choose output port. */ out_port = lswitch_choose_destination(sw, &flow); /* Make actions. */ - queue_id = get_queue_id(sw, in_port); + queue_id = get_queue_id(sw, pi.fmd.in_port); + ofpbuf_use_stack(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); if (out_port == OFPP_NONE) { - actions_len = 0; + /* No actions. */ } else if (queue_id == UINT32_MAX || out_port >= OFPP_MAX) { - struct ofp_action_output oao; - - memset(&oao, 0, sizeof oao); - oao.type = htons(OFPAT10_OUTPUT); - oao.len = htons(sizeof oao); - oao.port = htons(out_port); - - memcpy(actions, &oao, sizeof oao); - actions_len = sizeof oao; + ofpact_put_OUTPUT(&ofpacts)->port = out_port; } else { - struct ofp_action_enqueue oae; - - memset(&oae, 0, sizeof oae); - oae.type = htons(OFPAT10_ENQUEUE); - oae.len = htons(sizeof oae); - oae.port = htons(out_port); - oae.queue_id = htonl(queue_id); - - memcpy(actions, &oae, sizeof oae); - actions_len = sizeof oae; + struct ofpact_enqueue *enqueue = ofpact_put_ENQUEUE(&ofpacts); + enqueue->port = out_port; + enqueue->queue = queue_id; } - assert(actions_len <= sizeof actions); + ofpact_pad(&ofpacts); /* Prepare packet_out in case we need one. */ - po.buffer_id = ntohl(opi->buffer_id); + po.buffer_id = pi.buffer_id; if (po.buffer_id == UINT32_MAX) { po.packet = pkt.data; po.packet_len = pkt.size; @@ -505,31 +498,38 @@ process_packet_in(struct lswitch *sw, struct rconn *rconn, po.packet = NULL; po.packet_len = 0; } - po.in_port = in_port; - po.actions = (union ofp_action *) actions; - po.n_actions = actions_len / sizeof *actions; + po.in_port = pi.fmd.in_port; + po.ofpacts = ofpacts.data; + po.ofpacts_len = ofpacts.size; /* Send the packet, and possibly the whole flow, to the output port. */ if (sw->max_idle >= 0 && (!sw->ml || out_port != OFPP_FLOOD)) { + struct ofputil_flow_mod fm; struct ofpbuf *buffer; - struct cls_rule rule; /* The output port is known, or we always flood everything, so add a * new flow. */ - cls_rule_init(&flow, &sw->wc, 0, &rule); - buffer = make_add_flow(&rule, ntohl(opi->buffer_id), - sw->max_idle, actions_len); - ofpbuf_put(buffer, actions, actions_len); + memset(&fm, 0, sizeof fm); + cls_rule_init(&flow, &sw->wc, 0, &fm.cr); + fm.table_id = 0xff; + fm.command = OFPFC_ADD; + fm.idle_timeout = sw->max_idle; + fm.buffer_id = pi.buffer_id; + fm.out_port = OFPP_NONE; + fm.ofpacts = ofpacts.data; + fm.ofpacts_len = ofpacts.size; + buffer = ofputil_encode_flow_mod(&fm, sw->protocol); + queue_tx(sw, rconn, buffer); /* If the switch didn't buffer the packet, we need to send a copy. */ - if (ntohl(opi->buffer_id) == UINT32_MAX && actions_len > 0) { + if (pi.buffer_id == UINT32_MAX && out_port != OFPP_NONE) { queue_tx(sw, rconn, ofputil_encode_packet_out(&po)); } } else { /* We don't know that MAC, or we don't set up flows. Send along the * packet without setting up a flow. */ - if (ntohl(opi->buffer_id) != UINT32_MAX || actions_len > 0) { + if (pi.buffer_id != UINT32_MAX || out_port != OFPP_NONE) { queue_tx(sw, rconn, ofputil_encode_packet_out(&po)); } }