+
+/* Frees all of the "struct ofputil_bucket"s in the 'buckets' list. */
+void
+ofputil_bucket_list_destroy(struct list *buckets)
+{
+ struct ofputil_bucket *bucket, *next_bucket;
+
+ LIST_FOR_EACH_SAFE (bucket, next_bucket, list_node, buckets) {
+ list_remove(&bucket->list_node);
+ free(bucket->ofpacts);
+ free(bucket);
+ }
+}
+
+/* Returns an OpenFlow group stats request for OpenFlow version 'ofp_version',
+ * that requests stats for group 'group_id'. (Use OFPG_ALL to request stats
+ * for all groups.)
+ *
+ * Group statistics include packet and byte counts for each group. */
+struct ofpbuf *
+ofputil_encode_group_stats_request(enum ofp_version ofp_version,
+ uint32_t group_id)
+{
+ struct ofpbuf *request;
+
+ switch (ofp_version) {
+ case OFP10_VERSION:
+ ovs_fatal(0, "dump-group-stats needs OpenFlow 1.1 or later "
+ "(\'-O OpenFlow11\')");
+ case OFP11_VERSION:
+ case OFP12_VERSION:
+ case OFP13_VERSION: {
+ struct ofp11_group_stats_request *req;
+ request = ofpraw_alloc(OFPRAW_OFPST11_GROUP_REQUEST, ofp_version, 0);
+ req = ofpbuf_put_zeros(request, sizeof *req);
+ req->group_id = htonl(group_id);
+ break;
+ }
+ default:
+ NOT_REACHED();
+ }
+
+ return request;
+}
+
+/* Returns an OpenFlow group description request for OpenFlow version
+ * 'ofp_version', that requests stats for group 'group_id'. (Use OFPG_ALL to
+ * request stats for all groups.)
+ *
+ * Group descriptions include the bucket and action configuration for each
+ * group. */
+struct ofpbuf *
+ofputil_encode_group_desc_request(enum ofp_version ofp_version)
+{
+ struct ofpbuf *request;
+
+ switch (ofp_version) {
+ case OFP10_VERSION:
+ ovs_fatal(0, "dump-groups needs OpenFlow 1.1 or later "
+ "(\'-O OpenFlow11\')");
+ case OFP11_VERSION:
+ case OFP12_VERSION:
+ case OFP13_VERSION: {
+ request = ofpraw_alloc(OFPRAW_OFPST11_GROUP_DESC_REQUEST, ofp_version, 0);
+ break;
+ }
+ default:
+ NOT_REACHED();
+ }
+
+ return request;
+}
+
+static void *
+ofputil_group_stats_to_ofp11(const struct ofputil_group_stats *ogs,
+ size_t base_len, struct list *replies)
+{
+ struct ofp11_bucket_counter *bc11;
+ struct ofp11_group_stats *gs11;
+ size_t length;
+ int i;
+
+ length = base_len + sizeof(struct ofp11_bucket_counter) * ogs->n_buckets;
+
+ gs11 = ofpmp_append(replies, length);
+ memset(gs11, 0, base_len);
+ gs11->length = htons(length);
+ gs11->group_id = htonl(ogs->group_id);
+ gs11->ref_count = htonl(ogs->ref_count);
+ gs11->packet_count = htonll(ogs->packet_count);
+ gs11->byte_count = htonll(ogs->byte_count);
+
+ bc11 = (void *) (((uint8_t *) gs11) + base_len);
+ for (i = 0; i < ogs->n_buckets; i++) {
+ const struct bucket_counter *obc = &ogs->bucket_stats[i];
+
+ bc11[i].packet_count = htonll(obc->packet_count);
+ bc11[i].byte_count = htonll(obc->byte_count);
+ }
+
+ return gs11;
+}
+
+static void
+ofputil_append_of13_group_stats(const struct ofputil_group_stats *ogs,
+ struct list *replies)
+{
+ struct ofp13_group_stats *gs13;
+
+ gs13 = ofputil_group_stats_to_ofp11(ogs, sizeof *gs13, replies);
+ gs13->duration_sec = htonl(ogs->duration_sec);
+ gs13->duration_nsec = htonl(ogs->duration_nsec);
+}
+
+/* Encodes 'ogs' properly for the format of the list of group statistics
+ * replies already begun in 'replies' and appends it to the list. 'replies'
+ * must have originally been initialized with ofpmp_init(). */
+void
+ofputil_append_group_stats(struct list *replies,
+ const struct ofputil_group_stats *ogs)
+{
+ struct ofpbuf *msg = ofpbuf_from_list(list_back(replies));
+ struct ofp_header *oh = msg->data;
+
+ switch ((enum ofp_version)oh->version) {
+ case OFP11_VERSION:
+ case OFP12_VERSION:
+ ofputil_group_stats_to_ofp11(ogs, sizeof(struct ofp11_group_stats),
+ replies);
+ break;
+
+ case OFP13_VERSION:
+ ofputil_append_of13_group_stats(ogs, replies);
+ break;
+
+ case OFP10_VERSION:
+ default:
+ NOT_REACHED();
+ }
+}
+
+/* Returns an OpenFlow group features request for OpenFlow version
+ * 'ofp_version'. */
+struct ofpbuf *
+ofputil_encode_group_features_request(enum ofp_version ofp_version)
+{
+ struct ofpbuf *request = NULL;
+
+ switch (ofp_version) {
+ case OFP10_VERSION:
+ case OFP11_VERSION:
+ ovs_fatal(0, "dump-group-features needs OpenFlow 1.2 or later "
+ "(\'-O OpenFlow12\')");
+ case OFP12_VERSION:
+ case OFP13_VERSION: {
+ request = ofpraw_alloc(OFPRAW_OFPST12_GROUP_FEATURES_REQUEST,
+ ofp_version, 0);
+ break;
+ }
+ default:
+ NOT_REACHED();
+ }
+
+ return request;
+}
+
+/* Returns a OpenFlow message that encodes 'features' properly as a reply to
+ * group features request 'request'. */
+struct ofpbuf *
+ofputil_encode_group_features_reply(
+ const struct ofputil_group_features *features,
+ const struct ofp_header *request)
+{
+ struct ofp12_group_features_stats *ogf;
+ struct ofpbuf *reply;
+
+ reply = ofpraw_alloc_xid(OFPRAW_OFPST12_GROUP_FEATURES_REPLY,
+ request->version, request->xid, 0);
+ ogf = ofpbuf_put_zeros(reply, sizeof *ogf);
+ ogf->types = htonl(features->types);
+ ogf->capabilities = htonl(features->capabilities);
+ ogf->max_groups[0] = htonl(features->max_groups[0]);
+ ogf->max_groups[1] = htonl(features->max_groups[1]);
+ ogf->max_groups[2] = htonl(features->max_groups[2]);
+ ogf->max_groups[3] = htonl(features->max_groups[3]);
+ ogf->actions[0] = htonl(features->actions[0]);
+ ogf->actions[1] = htonl(features->actions[1]);
+ ogf->actions[2] = htonl(features->actions[2]);
+ ogf->actions[3] = htonl(features->actions[3]);
+
+ return reply;
+}
+
+/* Decodes group features reply 'oh' into 'features'. */
+void
+ofputil_decode_group_features_reply(const struct ofp_header *oh,
+ struct ofputil_group_features *features)
+{
+ const struct ofp12_group_features_stats *ogf = ofpmsg_body(oh);
+
+ features->types = ntohl(ogf->types);
+ features->capabilities = ntohl(ogf->capabilities);
+ features->max_groups[0] = ntohl(ogf->max_groups[0]);
+ features->max_groups[1] = ntohl(ogf->max_groups[1]);
+ features->max_groups[2] = ntohl(ogf->max_groups[2]);
+ features->max_groups[3] = ntohl(ogf->max_groups[3]);
+ features->actions[0] = ntohl(ogf->actions[0]);
+ features->actions[1] = ntohl(ogf->actions[1]);
+ features->actions[2] = ntohl(ogf->actions[2]);
+ features->actions[3] = ntohl(ogf->actions[3]);
+}
+
+/* Parse a group status request message into a 32 bit OpenFlow 1.1
+ * group ID and stores the latter in '*group_id'.
+ * Returns 0 if successful, otherwise an OFPERR_* number. */
+enum ofperr
+ofputil_decode_group_stats_request(const struct ofp_header *request,
+ uint32_t *group_id)
+{
+ const struct ofp11_group_stats_request *gsr11 = ofpmsg_body(request);
+ *group_id = ntohl(gsr11->group_id);
+ return 0;
+}
+
+/* Converts a group stats reply in 'msg' into an abstract ofputil_group_stats
+ * in 'gs'. Assigns freshly allocated memory to gs->bucket_stats for the
+ * caller to eventually free.
+ *
+ * Multiple group stats replies can be packed into a single OpenFlow message.
+ * Calling this function multiple times for a single 'msg' iterates through the
+ * replies. The caller must initially leave 'msg''s layer pointers null and
+ * not modify them between calls.
+ *
+ * Returns 0 if successful, EOF if no replies were left in this 'msg',
+ * otherwise a positive errno value. */
+int
+ofputil_decode_group_stats_reply(struct ofpbuf *msg,
+ struct ofputil_group_stats *gs)
+{
+ struct ofp11_bucket_counter *obc;
+ struct ofp11_group_stats *ogs11;
+ enum ofpraw raw;
+ enum ofperr error;
+ size_t base_len;
+ size_t length;
+ size_t i;
+
+ gs->bucket_stats = NULL;
+ error = (msg->l2
+ ? ofpraw_decode(&raw, msg->l2)
+ : ofpraw_pull(&raw, msg));
+ if (error) {
+ return error;
+ }
+
+ if (!msg->size) {
+ return EOF;
+ }
+
+ if (raw == OFPRAW_OFPST11_GROUP_REPLY) {
+ base_len = sizeof *ogs11;
+ ogs11 = ofpbuf_try_pull(msg, sizeof *ogs11);
+ gs->duration_sec = gs->duration_nsec = UINT32_MAX;
+ } else if (raw == OFPRAW_OFPST13_GROUP_REPLY) {
+ struct ofp13_group_stats *ogs13;
+
+ base_len = sizeof *ogs13;
+ ogs13 = ofpbuf_try_pull(msg, sizeof *ogs13);
+ if (ogs13) {
+ ogs11 = &ogs13->gs;
+ gs->duration_sec = ntohl(ogs13->duration_sec);
+ gs->duration_nsec = ntohl(ogs13->duration_nsec);
+ } else {
+ ogs11 = NULL;
+ }
+ } else {
+ NOT_REACHED();
+ }
+
+ if (!ogs11) {
+ VLOG_WARN_RL(&bad_ofmsg_rl, "%s reply has %zu leftover bytes at end",
+ ofpraw_get_name(raw), msg->size);
+ return OFPERR_OFPBRC_BAD_LEN;
+ }
+ length = ntohs(ogs11->length);
+ if (length < sizeof base_len) {
+ VLOG_WARN_RL(&bad_ofmsg_rl, "%s reply claims invalid length %zu",
+ ofpraw_get_name(raw), length);
+ return OFPERR_OFPBRC_BAD_LEN;
+ }
+
+ gs->group_id = ntohl(ogs11->group_id);
+ gs->ref_count = ntohl(ogs11->ref_count);
+ gs->packet_count = ntohll(ogs11->packet_count);
+ gs->byte_count = ntohll(ogs11->byte_count);
+
+ gs->n_buckets = (length - base_len) / sizeof *obc;
+ obc = ofpbuf_try_pull(msg, gs->n_buckets * sizeof *obc);
+ if (!obc) {
+ VLOG_WARN_RL(&bad_ofmsg_rl, "%s reply has %zu leftover bytes at end",
+ ofpraw_get_name(raw), msg->size);
+ return OFPERR_OFPBRC_BAD_LEN;
+ }
+
+ gs->bucket_stats = xmalloc(gs->n_buckets * sizeof *gs->bucket_stats);
+ for (i = 0; i < gs->n_buckets; i++) {
+ gs->bucket_stats[i].packet_count = ntohll(obc[i].packet_count);
+ gs->bucket_stats[i].byte_count = ntohll(obc[i].byte_count);
+ }
+
+ return 0;
+}
+
+/* Appends a group stats reply that contains the data in 'gds' to those already
+ * present in the list of ofpbufs in 'replies'. 'replies' should have been
+ * initialized with ofpmp_init(). */
+void
+ofputil_append_group_desc_reply(const struct ofputil_group_desc *gds,
+ struct list *buckets,
+ struct list *replies)
+{
+ struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
+ struct ofp11_group_desc_stats *ogds;
+ struct ofputil_bucket *bucket;
+ size_t start_ogds;
+
+ start_ogds = reply->size;
+ ofpbuf_put_zeros(reply, sizeof *ogds);
+ LIST_FOR_EACH (bucket, list_node, buckets) {
+ struct ofp11_bucket *ob;
+ size_t start_ob;
+
+ start_ob = reply->size;
+ ofpbuf_put_zeros(reply, sizeof *ob);
+ ofpacts_put_openflow11_actions(bucket->ofpacts,
+ bucket->ofpacts_len, reply);
+
+ ob = ofpbuf_at_assert(reply, start_ob, sizeof *ob);
+ ob->len = htons(reply->size - start_ob);
+ ob->weight = htons(bucket->weight);
+ ob->watch_port = ofputil_port_to_ofp11(bucket->watch_port);
+ ob->watch_group = htonl(bucket->watch_group);
+ }
+ ogds = ofpbuf_at_assert(reply, start_ogds, sizeof *ogds);
+ ogds->length = htons(reply->size - start_ogds);
+ ogds->type = gds->type;
+ ogds->group_id = htonl(gds->group_id);
+
+ ofpmp_postappend(replies, start_ogds);
+}
+
+static enum ofperr
+ofputil_pull_buckets(struct ofpbuf *msg, size_t buckets_length,
+ struct list *buckets)
+{
+ struct ofp11_bucket *ob;
+
+ list_init(buckets);
+ while (buckets_length > 0) {
+ struct ofputil_bucket *bucket;
+ struct ofpbuf ofpacts;
+ enum ofperr error;
+ size_t ob_len;
+
+ ob = (buckets_length >= sizeof *ob
+ ? ofpbuf_try_pull(msg, sizeof *ob)
+ : NULL);
+ if (!ob) {
+ VLOG_WARN_RL(&bad_ofmsg_rl, "buckets end with %zu leftover bytes",
+ buckets_length);
+ }
+
+ ob_len = ntohs(ob->len);
+ if (ob_len < sizeof *ob) {
+ VLOG_WARN_RL(&bad_ofmsg_rl, "OpenFlow message bucket length "
+ "%zu is not valid", ob_len);
+ return OFPERR_OFPGMFC_BAD_BUCKET;
+ } else if (ob_len > buckets_length) {
+ VLOG_WARN_RL(&bad_ofmsg_rl, "OpenFlow message bucket length "
+ "%zu exceeds remaining buckets data size %zu",
+ ob_len, buckets_length);
+ return OFPERR_OFPGMFC_BAD_BUCKET;
+ }
+ buckets_length -= ob_len;
+
+ ofpbuf_init(&ofpacts, 0);
+ error = ofpacts_pull_openflow11_actions(msg, ob_len - sizeof *ob,
+ &ofpacts);
+ if (error) {
+ ofpbuf_uninit(&ofpacts);
+ ofputil_bucket_list_destroy(buckets);
+ return error;
+ }
+
+ bucket = xzalloc(sizeof *bucket);
+ bucket->weight = ntohs(ob->weight);
+ error = ofputil_port_from_ofp11(ob->watch_port, &bucket->watch_port);
+ if (error) {
+ ofpbuf_uninit(&ofpacts);
+ ofputil_bucket_list_destroy(buckets);
+ return OFPERR_OFPGMFC_BAD_WATCH;
+ }
+ bucket->watch_group = ntohl(ob->watch_group);
+ bucket->ofpacts = ofpbuf_steal_data(&ofpacts);
+ bucket->ofpacts_len = ofpacts.size;
+ list_push_back(buckets, &bucket->list_node);
+ }
+
+ return 0;
+}
+
+/* Converts a group description reply in 'msg' into an abstract
+ * ofputil_group_desc in 'gd'.
+ *
+ * Multiple group description replies can be packed into a single OpenFlow
+ * message. Calling this function multiple times for a single 'msg' iterates
+ * through the replies. The caller must initially leave 'msg''s layer pointers
+ * null and not modify them between calls.
+ *
+ * Returns 0 if successful, EOF if no replies were left in this 'msg',
+ * otherwise a positive errno value. */
+int
+ofputil_decode_group_desc_reply(struct ofputil_group_desc *gd,
+ struct ofpbuf *msg)
+{
+ struct ofp11_group_desc_stats *ogds;
+ size_t length;
+
+ if (!msg->l2) {
+ ofpraw_pull_assert(msg);
+ }
+
+ if (!msg->size) {
+ return EOF;
+ }
+
+ ogds = ofpbuf_try_pull(msg, sizeof *ogds);
+ if (!ogds) {
+ VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST11_GROUP_DESC reply has %zu "
+ "leftover bytes at end", msg->size);
+ return OFPERR_OFPBRC_BAD_LEN;
+ }
+ gd->type = ogds->type;
+ gd->group_id = ntohl(ogds->group_id);
+
+ length = ntohs(ogds->length);
+ if (length < sizeof *ogds || length - sizeof *ogds > msg->size) {
+ VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST11_GROUP_DESC reply claims invalid "
+ "length %zu", length);
+ return OFPERR_OFPBRC_BAD_LEN;
+ }
+
+ return ofputil_pull_buckets(msg, length - sizeof *ogds, &gd->buckets);
+}
+
+/* Converts abstract group mod 'gm' into a message for OpenFlow version
+ * 'ofp_version' and returns the message. */
+struct ofpbuf *
+ofputil_encode_group_mod(enum ofp_version ofp_version,
+ const struct ofputil_group_mod *gm)
+{
+ struct ofpbuf *b;
+ struct ofp11_group_mod *ogm;
+ size_t start_ogm;
+ size_t start_bucket;
+ struct ofputil_bucket *bucket;
+ struct ofp11_bucket *ob;
+
+ switch (ofp_version) {
+ case OFP10_VERSION: {
+ if (gm->command == OFPGC11_ADD) {
+ ovs_fatal(0, "add-group needs OpenFlow 1.1 or later "
+ "(\'-O OpenFlow11\')");
+ } else if (gm->command == OFPGC11_MODIFY) {
+ ovs_fatal(0, "mod-group needs OpenFlow 1.1 or later "
+ "(\'-O OpenFlow11\')");
+ } else {
+ ovs_fatal(0, "del-groups needs OpenFlow 1.1 or later "
+ "(\'-O OpenFlow11\')");
+ }
+ }
+
+ case OFP11_VERSION:
+ case OFP12_VERSION:
+ case OFP13_VERSION: {
+ b = ofpraw_alloc(OFPRAW_OFPT11_GROUP_MOD, ofp_version, 0);
+ start_ogm = b->size;
+ ofpbuf_put_uninit(b, sizeof *ogm);
+
+ LIST_FOR_EACH (bucket, list_node, &gm->buckets) {
+ start_bucket = b->size;
+ ofpbuf_put_uninit(b, sizeof *ob);
+ if (bucket->ofpacts && bucket->ofpacts_len) {
+ ofpacts_put_openflow11_actions(bucket->ofpacts,
+ bucket->ofpacts_len, b);
+ }
+ ob = ofpbuf_at_assert(b, start_bucket, sizeof *ob);
+ ob->len = htons(b->size - start_bucket);;
+ ob->weight = htons(bucket->weight);
+ ob->watch_port = ofputil_port_to_ofp11(bucket->watch_port);
+ ob->watch_group = htonl(bucket->watch_group);
+ }
+ ogm = ofpbuf_at_assert(b, start_ogm, sizeof *ogm);
+ ogm->command = htons(gm->command);
+ ogm->type = gm->type;
+ ogm->pad = 0;
+ ogm->group_id = htonl(gm->group_id);
+
+ break;
+ }
+
+ default:
+ NOT_REACHED();
+ }
+
+ return b;
+}
+
+/* Converts OpenFlow group mod message 'oh' into an abstract group mod in
+ * 'gm'. Returns 0 if successful, otherwise an OpenFlow error code. */
+enum ofperr
+ofputil_decode_group_mod(const struct ofp_header *oh,
+ struct ofputil_group_mod *gm)
+{
+ const struct ofp11_group_mod *ogm;
+ struct ofpbuf msg;
+
+ ofpbuf_use_const(&msg, oh, ntohs(oh->length));
+ ofpraw_pull_assert(&msg);
+
+ ogm = ofpbuf_pull(&msg, sizeof *ogm);
+ gm->command = ntohs(ogm->command);
+ gm->type = ogm->type;
+ gm->group_id = ntohl(ogm->group_id);
+
+ return ofputil_pull_buckets(&msg, msg.size, &gm->buckets);
+}
+
+/* Parse a queue status request message into 'oqsr'.
+ * Returns 0 if successful, otherwise an OFPERR_* number. */
+enum ofperr
+ofputil_decode_queue_stats_request(const struct ofp_header *request,
+ struct ofputil_queue_stats_request *oqsr)
+{
+ switch ((enum ofp_version)request->version) {
+ case OFP13_VERSION:
+ case OFP12_VERSION:
+ case OFP11_VERSION: {
+ const struct ofp11_queue_stats_request *qsr11 = ofpmsg_body(request);
+ oqsr->queue_id = ntohl(qsr11->queue_id);
+ return ofputil_port_from_ofp11(qsr11->port_no, &oqsr->port_no);
+ }
+
+ case OFP10_VERSION: {
+ const struct ofp10_queue_stats_request *qsr10 = ofpmsg_body(request);
+ oqsr->queue_id = ntohl(qsr10->queue_id);
+ oqsr->port_no = u16_to_ofp(ntohs(qsr10->port_no));
+ /* OF 1.0 uses OFPP_ALL for OFPP_ANY */
+ if (oqsr->port_no == OFPP_ALL) {
+ oqsr->port_no = OFPP_ANY;
+ }
+ return 0;
+ }
+
+ default:
+ NOT_REACHED();
+ }
+}
+
+/* Encode a queue statsrequest for 'oqsr', the encoded message
+ * will be fore Open Flow version 'ofp_version'. Returns message
+ * as a struct ofpbuf. Returns encoded message on success, NULL on error */
+struct ofpbuf *
+ofputil_encode_queue_stats_request(enum ofp_version ofp_version,
+ const struct ofputil_queue_stats_request *oqsr)
+{
+ struct ofpbuf *request;
+
+ switch (ofp_version) {
+ case OFP11_VERSION:
+ case OFP12_VERSION:
+ case OFP13_VERSION: {
+ struct ofp11_queue_stats_request *req;
+ request = ofpraw_alloc(OFPRAW_OFPST11_QUEUE_REQUEST, ofp_version, 0);
+ req = ofpbuf_put_zeros(request, sizeof *req);
+ req->port_no = ofputil_port_to_ofp11(oqsr->port_no);
+ req->queue_id = htonl(oqsr->queue_id);
+ break;
+ }
+ case OFP10_VERSION: {
+ struct ofp10_queue_stats_request *req;
+ request = ofpraw_alloc(OFPRAW_OFPST10_QUEUE_REQUEST, ofp_version, 0);
+ req = ofpbuf_put_zeros(request, sizeof *req);
+ /* OpenFlow 1.0 needs OFPP_ALL instead of OFPP_ANY */
+ req->port_no = htons(ofp_to_u16(oqsr->port_no == OFPP_ANY
+ ? OFPP_ALL : oqsr->port_no));
+ req->queue_id = htonl(oqsr->queue_id);
+ break;
+ }
+ default:
+ NOT_REACHED();
+ }
+
+ return request;
+}
+
+static size_t
+ofputil_get_queue_stats_size(enum ofp_version ofp_version)
+{
+ switch (ofp_version) {
+ case OFP10_VERSION:
+ return sizeof(struct ofp10_queue_stats);
+ case OFP11_VERSION:
+ case OFP12_VERSION:
+ return sizeof(struct ofp11_queue_stats);
+ case OFP13_VERSION:
+ return sizeof(struct ofp13_queue_stats);
+ default:
+ NOT_REACHED();
+ }
+}
+
+/* Returns the number of queue stats elements in OFPTYPE_QUEUE_STATS_REPLY
+ * message 'oh'. */
+size_t
+ofputil_count_queue_stats(const struct ofp_header *oh)
+{
+ struct ofpbuf b;
+
+ ofpbuf_use_const(&b, oh, ntohs(oh->length));
+ ofpraw_pull_assert(&b);
+
+ return b.size / ofputil_get_queue_stats_size(oh->version);
+}
+
+static enum ofperr
+ofputil_queue_stats_from_ofp10(struct ofputil_queue_stats *oqs,
+ const struct ofp10_queue_stats *qs10)
+{
+ oqs->port_no = u16_to_ofp(ntohs(qs10->port_no));
+ oqs->queue_id = ntohl(qs10->queue_id);
+ oqs->tx_bytes = ntohll(get_32aligned_be64(&qs10->tx_bytes));
+ oqs->tx_packets = ntohll(get_32aligned_be64(&qs10->tx_packets));
+ oqs->tx_errors = ntohll(get_32aligned_be64(&qs10->tx_errors));
+ oqs->duration_sec = oqs->duration_nsec = UINT32_MAX;
+
+ return 0;
+}
+
+static enum ofperr
+ofputil_queue_stats_from_ofp11(struct ofputil_queue_stats *oqs,
+ const struct ofp11_queue_stats *qs11)
+{
+ enum ofperr error;
+
+ error = ofputil_port_from_ofp11(qs11->port_no, &oqs->port_no);
+ if (error) {
+ return error;
+ }
+
+ oqs->queue_id = ntohl(qs11->queue_id);
+ oqs->tx_bytes = ntohll(qs11->tx_bytes);
+ oqs->tx_packets = ntohll(qs11->tx_packets);
+ oqs->tx_errors = ntohll(qs11->tx_errors);
+ oqs->duration_sec = oqs->duration_nsec = UINT32_MAX;
+
+ return 0;
+}
+
+static enum ofperr
+ofputil_queue_stats_from_ofp13(struct ofputil_queue_stats *oqs,
+ const struct ofp13_queue_stats *qs13)
+{
+ enum ofperr error = ofputil_queue_stats_from_ofp11(oqs, &qs13->qs);
+ if (!error) {
+ oqs->duration_sec = ntohl(qs13->duration_sec);
+ oqs->duration_nsec = ntohl(qs13->duration_nsec);
+ }
+
+ return error;
+}
+
+/* Converts an OFPST_QUEUE_STATS reply in 'msg' into an abstract
+ * ofputil_queue_stats in 'qs'.
+ *
+ * Multiple OFPST_QUEUE_STATS replies can be packed into a single OpenFlow
+ * message. Calling this function multiple times for a single 'msg' iterates
+ * through the replies. The caller must initially leave 'msg''s layer pointers
+ * null and not modify them between calls.
+ *
+ * Returns 0 if successful, EOF if no replies were left in this 'msg',
+ * otherwise a positive errno value. */
+int
+ofputil_decode_queue_stats(struct ofputil_queue_stats *qs, struct ofpbuf *msg)
+{
+ enum ofperr error;
+ enum ofpraw raw;
+
+ error = (msg->l2
+ ? ofpraw_decode(&raw, msg->l2)
+ : ofpraw_pull(&raw, msg));
+ if (error) {
+ return error;
+ }
+
+ if (!msg->size) {
+ return EOF;
+ } else if (raw == OFPRAW_OFPST13_QUEUE_REPLY) {
+ const struct ofp13_queue_stats *qs13;
+
+ qs13 = ofpbuf_try_pull(msg, sizeof *qs13);
+ if (!qs13) {
+ goto bad_len;
+ }
+ return ofputil_queue_stats_from_ofp13(qs, qs13);
+ } else if (raw == OFPRAW_OFPST11_QUEUE_REPLY) {
+ const struct ofp11_queue_stats *qs11;
+
+ qs11 = ofpbuf_try_pull(msg, sizeof *qs11);
+ if (!qs11) {
+ goto bad_len;
+ }
+ return ofputil_queue_stats_from_ofp11(qs, qs11);
+ } else if (raw == OFPRAW_OFPST10_QUEUE_REPLY) {
+ const struct ofp10_queue_stats *qs10;
+
+ qs10 = ofpbuf_try_pull(msg, sizeof *qs10);
+ if (!qs10) {
+ goto bad_len;
+ }
+ return ofputil_queue_stats_from_ofp10(qs, qs10);
+ } else {
+ NOT_REACHED();
+ }
+
+ bad_len:
+ VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_QUEUE reply has %zu leftover "
+ "bytes at end", msg->size);
+ return OFPERR_OFPBRC_BAD_LEN;
+}
+
+static void
+ofputil_queue_stats_to_ofp10(const struct ofputil_queue_stats *oqs,
+ struct ofp10_queue_stats *qs10)
+{
+ qs10->port_no = htons(ofp_to_u16(oqs->port_no));
+ memset(qs10->pad, 0, sizeof qs10->pad);
+ qs10->queue_id = htonl(oqs->queue_id);
+ put_32aligned_be64(&qs10->tx_bytes, htonll(oqs->tx_bytes));
+ put_32aligned_be64(&qs10->tx_packets, htonll(oqs->tx_packets));
+ put_32aligned_be64(&qs10->tx_errors, htonll(oqs->tx_errors));
+}
+
+static void
+ofputil_queue_stats_to_ofp11(const struct ofputil_queue_stats *oqs,
+ struct ofp11_queue_stats *qs11)
+{
+ qs11->port_no = ofputil_port_to_ofp11(oqs->port_no);
+ qs11->queue_id = htonl(oqs->queue_id);
+ qs11->tx_bytes = htonll(oqs->tx_bytes);
+ qs11->tx_packets = htonll(oqs->tx_packets);
+ qs11->tx_errors = htonll(oqs->tx_errors);
+}
+
+static void
+ofputil_queue_stats_to_ofp13(const struct ofputil_queue_stats *oqs,
+ struct ofp13_queue_stats *qs13)
+{
+ ofputil_queue_stats_to_ofp11(oqs, &qs13->qs);
+ if (oqs->duration_sec != UINT32_MAX) {
+ qs13->duration_sec = htonl(oqs->duration_sec);
+ qs13->duration_nsec = htonl(oqs->duration_nsec);
+ } else {
+ qs13->duration_sec = OVS_BE32_MAX;
+ qs13->duration_nsec = OVS_BE32_MAX;
+ }
+}
+
+/* Encode a queue stat for 'oqs' and append it to 'replies'. */
+void
+ofputil_append_queue_stat(struct list *replies,
+ const struct ofputil_queue_stats *oqs)
+{
+ struct ofpbuf *msg = ofpbuf_from_list(list_back(replies));
+ struct ofp_header *oh = msg->data;
+
+ switch ((enum ofp_version)oh->version) {
+ case OFP13_VERSION: {
+ struct ofp13_queue_stats *reply = ofpmp_append(replies, sizeof *reply);
+ ofputil_queue_stats_to_ofp13(oqs, reply);
+ break;
+ }
+
+ case OFP12_VERSION:
+ case OFP11_VERSION: {
+ struct ofp11_queue_stats *reply = ofpmp_append(replies, sizeof *reply);
+ ofputil_queue_stats_to_ofp11(oqs, reply);
+ break;
+ }
+
+ case OFP10_VERSION: {
+ struct ofp10_queue_stats *reply = ofpmp_append(replies, sizeof *reply);
+ ofputil_queue_stats_to_ofp10(oqs, reply);
+ break;
+ }
+
+ default:
+ NOT_REACHED();
+ }
+}