X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=lib%2Flearning-switch.c;h=5f429c124571fe19507376cb3b50f0dcb41a3d9a;hb=e7668254f2f8f7208905c858ffbc84a65bb13815;hp=63edc0fb8c1bacefe859253d4d399cef0b1d3377;hpb=d98e60075528c3065ad453f7add4b30f22edcde3;p=openvswitch diff --git a/lib/learning-switch.c b/lib/learning-switch.c index 63edc0fb..5f429c12 100644 --- a/lib/learning-switch.c +++ b/lib/learning-switch.c @@ -24,6 +24,7 @@ #include #include "byte-order.h" +#include "classifier.h" #include "flow.h" #include "hmap.h" #include "mac-learning.h" @@ -33,7 +34,6 @@ #include "ofp-util.h" #include "openflow/openflow.h" #include "poll-loop.h" -#include "queue.h" #include "rconn.h" #include "shash.h" #include "timeval.h" @@ -57,7 +57,7 @@ struct lswitch { unsigned long long int datapath_id; time_t last_features_request; struct mac_learning *ml; /* NULL to act as hub instead of switch. */ - uint32_t wildcards; /* Wildcards to apply to flows. */ + struct flow_wildcards wc; /* Wildcards to apply to flows. */ bool action_normal; /* Use OFPP_NORMAL? */ /* Queue distribution. */ @@ -76,10 +76,12 @@ static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(30, 300); static void queue_tx(struct lswitch *, struct rconn *, struct ofpbuf *); static void send_features_request(struct lswitch *, struct rconn *); -typedef void packet_handler_func(struct lswitch *, struct rconn *, void *); -static packet_handler_func process_switch_features; -static packet_handler_func process_packet_in; -static packet_handler_func process_echo_request; +static void process_switch_features(struct lswitch *, + struct ofp_switch_features *); +static void process_packet_in(struct lswitch *, struct rconn *, + const struct ofp_packet_in *); +static void process_echo_request(struct lswitch *, struct rconn *, + const struct ofp_header *); /* Creates and returns a new learning switch whose configuration is given by * 'cfg'. @@ -88,7 +90,6 @@ static packet_handler_func process_echo_request; struct lswitch * lswitch_create(struct rconn *rconn, const struct lswitch_config *cfg) { - const struct ofpbuf *b; struct lswitch *sw; sw = xzalloc(sizeof *sw); @@ -97,15 +98,16 @@ lswitch_create(struct rconn *rconn, const struct lswitch_config *cfg) sw->last_features_request = time_now() - 1; sw->ml = cfg->mode == LSW_LEARN ? mac_learning_create() : NULL; sw->action_normal = cfg->mode == LSW_NORMAL; - if (cfg->exact_flows) { - /* Exact match. */ - sw->wildcards = 0; - } else { + + flow_wildcards_init_exact(&sw->wc); + if (!cfg->exact_flows) { /* We cannot wildcard all fields. * We need in_port to detect moves. * We need both SA and DA to do learning. */ - sw->wildcards = (OFPFW_DL_TYPE | OFPFW_NW_SRC_MASK | OFPFW_NW_DST_MASK - | OFPFW_NW_PROTO | OFPFW_TP_SRC | OFPFW_TP_DST); + sw->wc.wildcards = (FWW_DL_TYPE | FWW_NW_PROTO + | FWW_TP_SRC | FWW_TP_DST); + sw->wc.nw_src_mask = htonl(0); + sw->wc.nw_dst_mask = htonl(0); } sw->default_queue = cfg->default_queue; @@ -125,10 +127,14 @@ lswitch_create(struct rconn *rconn, const struct lswitch_config *cfg) sw->queued = rconn_packet_counter_create(); send_features_request(sw, rconn); - for (b = cfg->default_flows; b; b = b->next) { - queue_tx(sw, rconn, ofpbuf_clone(b)); - } + if (cfg->default_flows) { + const struct ofpbuf *b; + LIST_FOR_EACH (b, list_node, cfg->default_flows) { + queue_tx(sw, rconn, ofpbuf_clone(b)); + } + } + return sw; } @@ -176,38 +182,9 @@ void lswitch_process_packet(struct lswitch *sw, struct rconn *rconn, const struct ofpbuf *msg) { - struct processor { - uint8_t type; - size_t min_size; - packet_handler_func *handler; - }; - static const struct processor processors[] = { - { - OFPT_ECHO_REQUEST, - sizeof(struct ofp_header), - process_echo_request - }, - { - OFPT_FEATURES_REPLY, - sizeof(struct ofp_switch_features), - process_switch_features - }, - { - OFPT_PACKET_IN, - offsetof(struct ofp_packet_in, data), - process_packet_in - }, - { - OFPT_FLOW_REMOVED, - sizeof(struct ofp_flow_removed), - NULL - }, - }; - const size_t n_processors = ARRAY_SIZE(processors); - const struct processor *p; - struct ofp_header *oh; - - oh = msg->data; + const struct ofp_header *oh = msg->data; + const struct ofputil_msg_type *type; + if (sw->datapath_id == 0 && oh->type != OFPT_ECHO_REQUEST && oh->type != OFPT_FEATURES_REPLY) { @@ -215,27 +192,72 @@ lswitch_process_packet(struct lswitch *sw, struct rconn *rconn, return; } - for (p = processors; p < &processors[n_processors]; p++) { - if (oh->type == p->type) { - if (msg->size < p->min_size) { - VLOG_WARN_RL(&rl, "%016llx: %s: too short (%zu bytes) for " - "type %"PRIu8" (min %zu)", sw->datapath_id, - rconn_get_name(rconn), msg->size, oh->type, - p->min_size); - return; - } - if (p->handler) { - (p->handler)(sw, rconn, msg->data); - } - return; + ofputil_decode_msg_type(oh, &type); + switch (ofputil_msg_type_code(type)) { + case OFPUTIL_OFPT_ECHO_REQUEST: + process_echo_request(sw, rconn, msg->data); + break; + + case OFPUTIL_OFPT_FEATURES_REPLY: + process_switch_features(sw, msg->data); + break; + + case OFPUTIL_OFPT_PACKET_IN: + process_packet_in(sw, rconn, msg->data); + break; + + case OFPUTIL_OFPT_FLOW_REMOVED: + /* Nothing to do. */ + break; + + case OFPUTIL_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_STATUS_REQUEST: + case OFPUTIL_NXT_STATUS_REPLY: + case OFPUTIL_NXT_TUN_ID_FROM_COOKIE: + case OFPUTIL_NXT_ROLE_REQUEST: + case OFPUTIL_NXT_ROLE_REPLY: + case OFPUTIL_NXT_SET_FLOW_FORMAT: + case OFPUTIL_NXT_FLOW_MOD: + case OFPUTIL_NXT_FLOW_REMOVED: + case OFPUTIL_NXST_FLOW_REQUEST: + case OFPUTIL_NXST_AGGREGATE_REQUEST: + case OFPUTIL_NXST_FLOW_REPLY: + case OFPUTIL_NXST_AGGREGATE_REPLY: + default: + if (VLOG_IS_DBG_ENABLED()) { + char *s = ofp_to_string(msg->data, msg->size, 2); + VLOG_DBG_RL(&rl, "%016llx: OpenFlow packet ignored: %s", + sw->datapath_id, s); + free(s); } } - if (VLOG_IS_DBG_ENABLED()) { - char *s = ofp_to_string(msg->data, msg->size, 2); - VLOG_DBG_RL(&rl, "%016llx: OpenFlow packet ignored: %s", - sw->datapath_id, s); - free(s); - } } static void @@ -276,26 +298,20 @@ queue_tx(struct lswitch *sw, struct rconn *rconn, struct ofpbuf *b) } static void -process_switch_features(struct lswitch *sw, struct rconn *rconn OVS_UNUSED, - void *osf_) +process_switch_features(struct lswitch *sw, struct ofp_switch_features *osf) { - struct ofp_switch_features *osf = osf_; size_t n_ports; size_t i; - if (check_ofp_message_array(&osf->header, OFPT_FEATURES_REPLY, - sizeof *osf, sizeof *osf->ports, &n_ports)) { - return; - } - sw->datapath_id = ntohll(osf->datapath_id); + n_ports = (ntohs(osf->header.length) - sizeof *osf) / sizeof *osf->ports; for (i = 0; i < n_ports; i++) { struct ofp_phy_port *opp = &osf->ports[i]; struct lswitch_port *lp; opp->name[OFP_MAX_PORT_NAME_LEN - 1] = '\0'; - lp = shash_find_data(&sw->queue_names, (char *) opp->name); + lp = shash_find_data(&sw->queue_names, opp->name); if (lp && hmap_node_is_null(&lp->hmap_node)) { lp->port_no = ntohs(opp->port_no); hmap_insert(&sw->queue_numbers, &lp->hmap_node, @@ -360,9 +376,9 @@ get_queue_id(const struct lswitch *sw, uint16_t in_port) } static void -process_packet_in(struct lswitch *sw, struct rconn *rconn, void *opi_) +process_packet_in(struct lswitch *sw, struct rconn *rconn, + const struct ofp_packet_in *opi) { - struct ofp_packet_in *opi = opi_; uint16_t in_port = ntohs(opi->in_port); uint32_t queue_id; uint16_t out_port; @@ -384,8 +400,7 @@ process_packet_in(struct lswitch *sw, struct rconn *rconn, void *opi_) /* Extract flow data from 'opi' into 'flow'. */ pkt_ofs = offsetof(struct ofp_packet_in, data); pkt_len = ntohs(opi->header.length) - pkt_ofs; - pkt.data = opi->data; - pkt.size = pkt_len; + ofpbuf_use_const(&pkt, opi->data, pkt_len); flow_extract(&pkt, 0, in_port, &flow); /* Choose output port. */ @@ -423,14 +438,15 @@ process_packet_in(struct lswitch *sw, struct rconn *rconn, void *opi_) if (sw->max_idle >= 0 && (!sw->ml || out_port != OFPP_FLOOD)) { struct ofpbuf *buffer; struct ofp_flow_mod *ofm; + struct cls_rule rule; /* The output port is known, or we always flood everything, so add a * new flow. */ - buffer = make_add_flow(&flow, ntohl(opi->buffer_id), + 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); ofm = buffer->data; - ofm->match.wildcards = htonl(sw->wildcards); queue_tx(sw, rconn, buffer); /* If the switch didn't buffer the packet, we need to send a copy. */ @@ -451,8 +467,8 @@ process_packet_in(struct lswitch *sw, struct rconn *rconn, void *opi_) } static void -process_echo_request(struct lswitch *sw, struct rconn *rconn, void *rq_) +process_echo_request(struct lswitch *sw, struct rconn *rconn, + const struct ofp_header *rq) { - struct ofp_header *rq = rq_; queue_tx(sw, rconn, make_echo_reply(rq)); }