/* * 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. * You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #include #include "ofp-print.h" #include #include #include #include #include #include #include #include #include "bundle.h" #include "byte-order.h" #include "compiler.h" #include "dynamic-string.h" #include "flow.h" #include "learn.h" #include "multipath.h" #include "meta-flow.h" #include "netdev.h" #include "nx-match.h" #include "ofp-actions.h" #include "ofp-errors.h" #include "ofp-util.h" #include "ofpbuf.h" #include "openflow/openflow.h" #include "openflow/nicira-ext.h" #include "packets.h" #include "pcap.h" #include "type-props.h" #include "unaligned.h" #include "util.h" static void ofp_print_queue_name(struct ds *string, uint32_t port); static void ofp_print_error(struct ds *, enum ofperr); /* Returns a string that represents the contents of the Ethernet frame in the * 'len' bytes starting at 'data'. The caller must free the returned string.*/ char * ofp_packet_to_string(const void *data, size_t len) { struct ds ds = DS_EMPTY_INITIALIZER; struct ofpbuf buf; struct flow flow; ofpbuf_use_const(&buf, data, len); flow_extract(&buf, 0, 0, 0, &flow); flow_format(&ds, &flow); if (buf.l7) { if (flow.nw_proto == IPPROTO_TCP) { struct tcp_header *th = buf.l4; ds_put_format(&ds, " tcp_csum:%"PRIx16, ntohs(th->tcp_csum)); } else if (flow.nw_proto == IPPROTO_UDP) { struct udp_header *uh = buf.l4; ds_put_format(&ds, " udp_csum:%"PRIx16, ntohs(uh->udp_csum)); } } ds_put_char(&ds, '\n'); return ds_cstr(&ds); } static void ofp_print_packet_in(struct ds *string, const struct ofp_header *oh, int verbosity) { struct ofputil_packet_in pin; int error; int i; error = ofputil_decode_packet_in(&pin, oh); if (error) { ofp_print_error(string, error); return; } if (pin.table_id) { ds_put_format(string, " table_id=%"PRIu8, pin.table_id); } if (pin.cookie) { ds_put_format(string, " cookie=0x%"PRIx64, ntohll(pin.cookie)); } ds_put_format(string, " total_len=%"PRIu16" in_port=", pin.total_len); ofputil_format_port(pin.fmd.in_port, string); if (pin.fmd.tun_id_mask) { ds_put_format(string, " tun_id=0x%"PRIx64, ntohll(pin.fmd.tun_id)); if (pin.fmd.tun_id_mask != htonll(UINT64_MAX)) { ds_put_format(string, "/0x%"PRIx64, ntohll(pin.fmd.tun_id_mask)); } } if (pin.fmd.metadata_mask) { ds_put_format(string, " metadata=0x%"PRIx64, ntohll(pin.fmd.metadata)); if (pin.fmd.metadata_mask != htonll(UINT64_MAX)) { ds_put_format(string, "/0x%"PRIx64, ntohll(pin.fmd.metadata_mask)); } } for (i = 0; i < FLOW_N_REGS; i++) { if (pin.fmd.reg_masks[i]) { ds_put_format(string, " reg%d=0x%"PRIx32, i, pin.fmd.regs[i]); if (pin.fmd.reg_masks[i] != UINT32_MAX) { ds_put_format(string, "/0x%"PRIx32, pin.fmd.reg_masks[i]); } } } ds_put_format(string, " (via %s)", ofputil_packet_in_reason_to_string(pin.reason)); ds_put_format(string, " data_len=%zu", pin.packet_len); if (pin.buffer_id == UINT32_MAX) { ds_put_format(string, " (unbuffered)"); if (pin.total_len != pin.packet_len) { ds_put_format(string, " (***total_len != data_len***)"); } } else { ds_put_format(string, " buffer=0x%08"PRIx32, pin.buffer_id); if (pin.total_len < pin.packet_len) { ds_put_format(string, " (***total_len < data_len***)"); } } ds_put_char(string, '\n'); if (verbosity > 0) { char *packet = ofp_packet_to_string(pin.packet, pin.packet_len); ds_put_cstr(string, packet); free(packet); } } static void ofp_print_packet_out(struct ds *string, const struct ofp_packet_out *opo, int verbosity) { struct ofputil_packet_out po; struct ofpbuf ofpacts; enum ofperr error; ofpbuf_init(&ofpacts, 64); error = ofputil_decode_packet_out(&po, opo, &ofpacts); if (error) { ofpbuf_uninit(&ofpacts); ofp_print_error(string, error); return; } ds_put_cstr(string, " in_port="); ofputil_format_port(po.in_port, string); ds_put_char(string, ' '); ofpacts_format(po.ofpacts, po.ofpacts_len, string); if (po.buffer_id == UINT32_MAX) { ds_put_format(string, " data_len=%zu", po.packet_len); if (verbosity > 0 && po.packet_len > 0) { char *packet = ofp_packet_to_string(po.packet, po.packet_len); ds_put_char(string, '\n'); ds_put_cstr(string, packet); free(packet); } } else { ds_put_format(string, " buffer=0x%08"PRIx32, po.buffer_id); } ds_put_char(string, '\n'); ofpbuf_uninit(&ofpacts); } /* qsort comparison function. */ static int compare_ports(const void *a_, const void *b_) { const struct ofputil_phy_port *a = a_; const struct ofputil_phy_port *b = b_; uint16_t ap = a->port_no; uint16_t bp = b->port_no; return ap < bp ? -1 : ap > bp; } static void ofp_print_bit_names(struct ds *string, uint32_t bits, const char *(*bit_to_name)(uint32_t bit)) { int n = 0; int i; if (!bits) { ds_put_cstr(string, "0"); return; } for (i = 0; i < 32; i++) { uint32_t bit = UINT32_C(1) << i; if (bits & bit) { const char *name = bit_to_name(bit); if (name) { if (n++) { ds_put_char(string, ' '); } ds_put_cstr(string, name); bits &= ~bit; } } } if (bits) { if (n) { ds_put_char(string, ' '); } ds_put_format(string, "0x%"PRIx32, bits); } } static const char * netdev_feature_to_name(uint32_t bit) { enum netdev_features f = bit; switch (f) { case NETDEV_F_10MB_HD: return "10MB-HD"; case NETDEV_F_10MB_FD: return "10MB-FD"; case NETDEV_F_100MB_HD: return "100MB-HD"; case NETDEV_F_100MB_FD: return "100MB-FD"; case NETDEV_F_1GB_HD: return "1GB-HD"; case NETDEV_F_1GB_FD: return "1GB-FD"; case NETDEV_F_10GB_FD: return "10GB-FD"; case NETDEV_F_40GB_FD: return "40GB-FD"; case NETDEV_F_100GB_FD: return "100GB-FD"; case NETDEV_F_1TB_FD: return "1TB-FD"; case NETDEV_F_OTHER: return "OTHER"; case NETDEV_F_COPPER: return "COPPER"; case NETDEV_F_FIBER: return "FIBER"; case NETDEV_F_AUTONEG: return "AUTO_NEG"; case NETDEV_F_PAUSE: return "AUTO_PAUSE"; case NETDEV_F_PAUSE_ASYM: return "AUTO_PAUSE_ASYM"; } return NULL; } static void ofp_print_port_features(struct ds *string, enum netdev_features features) { ofp_print_bit_names(string, features, netdev_feature_to_name); ds_put_char(string, '\n'); } static const char * ofputil_port_config_to_name(uint32_t bit) { enum ofputil_port_config pc = bit; switch (pc) { case OFPUTIL_PC_PORT_DOWN: return "PORT_DOWN"; case OFPUTIL_PC_NO_STP: return "NO_STP"; case OFPUTIL_PC_NO_RECV: return "NO_RECV"; case OFPUTIL_PC_NO_RECV_STP: return "NO_RECV_STP"; case OFPUTIL_PC_NO_FLOOD: return "NO_FLOOD"; case OFPUTIL_PC_NO_FWD: return "NO_FWD"; case OFPUTIL_PC_NO_PACKET_IN: return "NO_PACKET_IN"; } return NULL; } static void ofp_print_port_config(struct ds *string, enum ofputil_port_config config) { ofp_print_bit_names(string, config, ofputil_port_config_to_name); ds_put_char(string, '\n'); } static const char * ofputil_port_state_to_name(uint32_t bit) { enum ofputil_port_state ps = bit; switch (ps) { case OFPUTIL_PS_LINK_DOWN: return "LINK_DOWN"; case OFPUTIL_PS_BLOCKED: return "BLOCKED"; case OFPUTIL_PS_LIVE: return "LIVE"; case OFPUTIL_PS_STP_LISTEN: case OFPUTIL_PS_STP_LEARN: case OFPUTIL_PS_STP_FORWARD: case OFPUTIL_PS_STP_BLOCK: /* Handled elsewhere. */ return NULL; } return NULL; } static void ofp_print_port_state(struct ds *string, enum ofputil_port_state state) { enum ofputil_port_state stp_state; /* The STP state is a 2-bit field so it doesn't fit in with the bitmask * pattern. We have to special case it. * * OVS doesn't support STP, so this field will always be 0 if we are * talking to OVS, so we'd always print STP_LISTEN in that case. * Therefore, we don't print anything at all if the value is STP_LISTEN, to * avoid confusing users. */ stp_state = state & OFPUTIL_PS_STP_MASK; if (stp_state) { ds_put_cstr(string, (stp_state == OFPUTIL_PS_STP_LEARN ? "STP_LEARN" : stp_state == OFPUTIL_PS_STP_FORWARD ? "STP_FORWARD" : "STP_BLOCK")); state &= ~OFPUTIL_PS_STP_MASK; if (state) { ofp_print_bit_names(string, state, ofputil_port_state_to_name); } } else { ofp_print_bit_names(string, state, ofputil_port_state_to_name); } ds_put_char(string, '\n'); } static void ofp_print_phy_port(struct ds *string, const struct ofputil_phy_port *port) { char name[sizeof port->name]; int j; memcpy(name, port->name, sizeof name); for (j = 0; j < sizeof name - 1; j++) { if (!isprint((unsigned char) name[j])) { break; } } name[j] = '\0'; ds_put_char(string, ' '); ofputil_format_port(port->port_no, string); ds_put_format(string, "(%s): addr:"ETH_ADDR_FMT"\n", name, ETH_ADDR_ARGS(port->hw_addr)); ds_put_cstr(string, " config: "); ofp_print_port_config(string, port->config); ds_put_cstr(string, " state: "); ofp_print_port_state(string, port->state); if (port->curr) { ds_put_format(string, " current: "); ofp_print_port_features(string, port->curr); } if (port->advertised) { ds_put_format(string, " advertised: "); ofp_print_port_features(string, port->advertised); } if (port->supported) { ds_put_format(string, " supported: "); ofp_print_port_features(string, port->supported); } if (port->peer) { ds_put_format(string, " peer: "); ofp_print_port_features(string, port->peer); } ds_put_format(string, " speed: %"PRIu32" Mbps now, " "%"PRIu32" Mbps max\n", port->curr_speed / UINT32_C(1000), port->max_speed / UINT32_C(1000)); } /* Given a buffer 'b' that contains an array of OpenFlow ports of type * 'ofp_version', writes a detailed description of each port into * 'string'. */ static void ofp_print_phy_ports(struct ds *string, uint8_t ofp_version, struct ofpbuf *b) { size_t n_ports; struct ofputil_phy_port *ports; enum ofperr error; size_t i; n_ports = ofputil_count_phy_ports(ofp_version, b); ports = xmalloc(n_ports * sizeof *ports); for (i = 0; i < n_ports; i++) { error = ofputil_pull_phy_port(ofp_version, b, &ports[i]); if (error) { ofp_print_error(string, error); goto exit; } } qsort(ports, n_ports, sizeof *ports, compare_ports); for (i = 0; i < n_ports; i++) { ofp_print_phy_port(string, &ports[i]); } exit: free(ports); } static const char * ofputil_capabilities_to_name(uint32_t bit) { enum ofputil_capabilities capabilities = bit; switch (capabilities) { case OFPUTIL_C_FLOW_STATS: return "FLOW_STATS"; case OFPUTIL_C_TABLE_STATS: return "TABLE_STATS"; case OFPUTIL_C_PORT_STATS: return "PORT_STATS"; case OFPUTIL_C_IP_REASM: return "IP_REASM"; case OFPUTIL_C_QUEUE_STATS: return "QUEUE_STATS"; case OFPUTIL_C_ARP_MATCH_IP: return "ARP_MATCH_IP"; case OFPUTIL_C_STP: return "STP"; case OFPUTIL_C_GROUP_STATS: return "GROUP_STATS"; } return NULL; } static const char * ofputil_action_bitmap_to_name(uint32_t bit) { enum ofputil_action_bitmap action = bit; switch (action) { case OFPUTIL_A_OUTPUT: return "OUTPUT"; case OFPUTIL_A_SET_VLAN_VID: return "SET_VLAN_VID"; case OFPUTIL_A_SET_VLAN_PCP: return "SET_VLAN_PCP"; case OFPUTIL_A_STRIP_VLAN: return "STRIP_VLAN"; case OFPUTIL_A_SET_DL_SRC: return "SET_DL_SRC"; case OFPUTIL_A_SET_DL_DST: return "SET_DL_DST"; case OFPUTIL_A_SET_NW_SRC: return "SET_NW_SRC"; case OFPUTIL_A_SET_NW_DST: return "SET_NW_DST"; case OFPUTIL_A_SET_NW_ECN: return "SET_NW_ECN"; case OFPUTIL_A_SET_NW_TOS: return "SET_NW_TOS"; case OFPUTIL_A_SET_TP_SRC: return "SET_TP_SRC"; case OFPUTIL_A_SET_TP_DST: return "SET_TP_DST"; case OFPUTIL_A_ENQUEUE: return "ENQUEUE"; case OFPUTIL_A_COPY_TTL_OUT: return "COPY_TTL_OUT"; case OFPUTIL_A_COPY_TTL_IN: return "COPY_TTL_IN"; case OFPUTIL_A_SET_MPLS_LABEL: return "SET_MPLS_LABEL"; case OFPUTIL_A_SET_MPLS_TC: return "SET_MPLS_TC"; case OFPUTIL_A_SET_MPLS_TTL: return "SET_MPLS_TTL"; case OFPUTIL_A_DEC_MPLS_TTL: return "DEC_MPLS_TTL"; case OFPUTIL_A_PUSH_VLAN: return "PUSH_VLAN"; case OFPUTIL_A_POP_VLAN: return "POP_VLAN"; case OFPUTIL_A_PUSH_MPLS: return "PUSH_MPLS"; case OFPUTIL_A_POP_MPLS: return "POP_MPLS"; case OFPUTIL_A_SET_QUEUE: return "SET_QUEUE"; case OFPUTIL_A_GROUP: return "GROUP"; case OFPUTIL_A_SET_NW_TTL: return "SET_NW_TTL"; case OFPUTIL_A_DEC_NW_TTL: return "DEC_NW_TTL"; } return NULL; } static void ofp_print_switch_features(struct ds *string, const struct ofp_switch_features *osf) { struct ofputil_switch_features features; enum ofperr error; struct ofpbuf b; error = ofputil_decode_switch_features(osf, &features, &b); if (error) { ofp_print_error(string, error); return; } ds_put_format(string, " dpid:%016"PRIx64"\n", features.datapath_id); ds_put_format(string, "n_tables:%"PRIu8", n_buffers:%"PRIu32"\n", features.n_tables, features.n_buffers); ds_put_cstr(string, "capabilities: "); ofp_print_bit_names(string, features.capabilities, ofputil_capabilities_to_name); ds_put_char(string, '\n'); ds_put_cstr(string, "actions: "); ofp_print_bit_names(string, features.actions, ofputil_action_bitmap_to_name); ds_put_char(string, '\n'); ofp_print_phy_ports(string, osf->header.version, &b); } static void ofp_print_switch_config(struct ds *string, const struct ofp_switch_config *osc) { enum ofp_config_flags flags; flags = ntohs(osc->flags); ds_put_format(string, " frags=%s", ofputil_frag_handling_to_string(flags)); flags &= ~OFPC_FRAG_MASK; if (flags & OFPC_INVALID_TTL_TO_CONTROLLER) { ds_put_format(string, " invalid_ttl_to_controller"); flags &= ~OFPC_INVALID_TTL_TO_CONTROLLER; } if (flags) { ds_put_format(string, " ***unknown flags 0x%04"PRIx16"***", flags); } ds_put_format(string, " miss_send_len=%"PRIu16"\n", ntohs(osc->miss_send_len)); } static void print_wild(struct ds *string, const char *leader, int is_wild, int verbosity, const char *format, ...) __attribute__((format(printf, 5, 6))); static void print_wild(struct ds *string, const char *leader, int is_wild, int verbosity, const char *format, ...) { if (is_wild && verbosity < 2) { return; } ds_put_cstr(string, leader); if (!is_wild) { va_list args; va_start(args, format); ds_put_format_valist(string, format, args); va_end(args); } else { ds_put_char(string, '*'); } ds_put_char(string, ','); } static void print_ip_netmask(struct ds *string, const char *leader, ovs_be32 ip, uint32_t wild_bits, int verbosity) { if (wild_bits >= 32 && verbosity < 2) { return; } ds_put_cstr(string, leader); if (wild_bits < 32) { ds_put_format(string, IP_FMT, IP_ARGS(&ip)); if (wild_bits) { ds_put_format(string, "/%d", 32 - wild_bits); } } else { ds_put_char(string, '*'); } ds_put_char(string, ','); } void ofp10_match_print(struct ds *f, const struct ofp10_match *om, int verbosity) { char *s = ofp10_match_to_string(om, verbosity); ds_put_cstr(f, s); free(s); } char * ofp10_match_to_string(const struct ofp10_match *om, int verbosity) { struct ds f = DS_EMPTY_INITIALIZER; uint32_t w = ntohl(om->wildcards); bool skip_type = false; bool skip_proto = false; if (!(w & OFPFW10_DL_TYPE)) { skip_type = true; if (om->dl_type == htons(ETH_TYPE_IP)) { if (!(w & OFPFW10_NW_PROTO)) { skip_proto = true; if (om->nw_proto == IPPROTO_ICMP) { ds_put_cstr(&f, "icmp,"); } else if (om->nw_proto == IPPROTO_TCP) { ds_put_cstr(&f, "tcp,"); } else if (om->nw_proto == IPPROTO_UDP) { ds_put_cstr(&f, "udp,"); } else { ds_put_cstr(&f, "ip,"); skip_proto = false; } } else { ds_put_cstr(&f, "ip,"); } } else if (om->dl_type == htons(ETH_TYPE_ARP)) { ds_put_cstr(&f, "arp,"); } else { skip_type = false; } } print_wild(&f, "in_port=", w & OFPFW10_IN_PORT, verbosity, "%d", ntohs(om->in_port)); print_wild(&f, "dl_vlan=", w & OFPFW10_DL_VLAN, verbosity, "%d", ntohs(om->dl_vlan)); print_wild(&f, "dl_vlan_pcp=", w & OFPFW10_DL_VLAN_PCP, verbosity, "%d", om->dl_vlan_pcp); print_wild(&f, "dl_src=", w & OFPFW10_DL_SRC, verbosity, ETH_ADDR_FMT, ETH_ADDR_ARGS(om->dl_src)); print_wild(&f, "dl_dst=", w & OFPFW10_DL_DST, verbosity, ETH_ADDR_FMT, ETH_ADDR_ARGS(om->dl_dst)); if (!skip_type) { print_wild(&f, "dl_type=", w & OFPFW10_DL_TYPE, verbosity, "0x%04x", ntohs(om->dl_type)); } print_ip_netmask(&f, "nw_src=", om->nw_src, (w & OFPFW10_NW_SRC_MASK) >> OFPFW10_NW_SRC_SHIFT, verbosity); print_ip_netmask(&f, "nw_dst=", om->nw_dst, (w & OFPFW10_NW_DST_MASK) >> OFPFW10_NW_DST_SHIFT, verbosity); if (!skip_proto) { if (om->dl_type == htons(ETH_TYPE_ARP)) { print_wild(&f, "arp_op=", w & OFPFW10_NW_PROTO, verbosity, "%u", om->nw_proto); } else { print_wild(&f, "nw_proto=", w & OFPFW10_NW_PROTO, verbosity, "%u", om->nw_proto); } } print_wild(&f, "nw_tos=", w & OFPFW10_NW_TOS, verbosity, "%u", om->nw_tos); if (om->nw_proto == IPPROTO_ICMP) { print_wild(&f, "icmp_type=", w & OFPFW10_ICMP_TYPE, verbosity, "%d", ntohs(om->tp_src)); print_wild(&f, "icmp_code=", w & OFPFW10_ICMP_CODE, verbosity, "%d", ntohs(om->tp_dst)); } else { print_wild(&f, "tp_src=", w & OFPFW10_TP_SRC, verbosity, "%d", ntohs(om->tp_src)); print_wild(&f, "tp_dst=", w & OFPFW10_TP_DST, verbosity, "%d", ntohs(om->tp_dst)); } if (ds_last(&f) == ',') { f.length--; } return ds_cstr(&f); } static void ofp_print_flow_mod(struct ds *s, const struct ofp_header *oh, enum ofputil_msg_code code, int verbosity) { struct ofputil_flow_mod fm; struct ofpbuf ofpacts; bool need_priority; enum ofperr error; ofpbuf_init(&ofpacts, 64); error = ofputil_decode_flow_mod(&fm, oh, OFPUTIL_P_OF10_TID, &ofpacts); if (error) { ofpbuf_uninit(&ofpacts); ofp_print_error(s, error); return; } ds_put_char(s, ' '); switch (fm.command) { case OFPFC_ADD: ds_put_cstr(s, "ADD"); break; case OFPFC_MODIFY: ds_put_cstr(s, "MOD"); break; case OFPFC_MODIFY_STRICT: ds_put_cstr(s, "MOD_STRICT"); break; case OFPFC_DELETE: ds_put_cstr(s, "DEL"); break; case OFPFC_DELETE_STRICT: ds_put_cstr(s, "DEL_STRICT"); break; default: ds_put_format(s, "cmd:%d", fm.command); } if (fm.table_id != 0) { ds_put_format(s, " table:%d", fm.table_id); } ds_put_char(s, ' '); if (verbosity >= 3 && code == OFPUTIL_OFPT_FLOW_MOD) { const struct ofp_flow_mod *ofm = (const struct ofp_flow_mod *) oh; ofp10_match_print(s, &ofm->match, verbosity); /* ofp_print_match() doesn't print priority. */ need_priority = true; } else if (verbosity >= 3 && code == OFPUTIL_NXT_FLOW_MOD) { const struct nx_flow_mod *nfm = (const struct nx_flow_mod *) oh; const void *nxm = nfm + 1; char *nxm_s; nxm_s = nx_match_to_string(nxm, ntohs(nfm->match_len)); ds_put_cstr(s, nxm_s); free(nxm_s); /* nx_match_to_string() doesn't print priority. */ need_priority = true; } else { cls_rule_format(&fm.cr, s); /* cls_rule_format() does print priority. */ need_priority = false; } if (ds_last(s) != ' ') { ds_put_char(s, ' '); } if (fm.new_cookie != htonll(0)) { ds_put_format(s, "cookie:0x%"PRIx64" ", ntohll(fm.new_cookie)); } if (fm.cookie_mask != htonll(0)) { ds_put_format(s, "cookie:0x%"PRIx64"/0x%"PRIx64" ", ntohll(fm.cookie), ntohll(fm.cookie_mask)); } if (fm.idle_timeout != OFP_FLOW_PERMANENT) { ds_put_format(s, "idle:%"PRIu16" ", fm.idle_timeout); } if (fm.hard_timeout != OFP_FLOW_PERMANENT) { ds_put_format(s, "hard:%"PRIu16" ", fm.hard_timeout); } if (fm.cr.priority != OFP_DEFAULT_PRIORITY && need_priority) { ds_put_format(s, "pri:%"PRIu16" ", fm.cr.priority); } if (fm.buffer_id != UINT32_MAX) { ds_put_format(s, "buf:0x%"PRIx32" ", fm.buffer_id); } if (fm.flags != 0) { uint16_t flags = fm.flags; if (flags & OFPFF_SEND_FLOW_REM) { ds_put_cstr(s, "send_flow_rem "); } if (flags & OFPFF_CHECK_OVERLAP) { ds_put_cstr(s, "check_overlap "); } if (flags & OFPFF_EMERG) { ds_put_cstr(s, "emerg "); } flags &= ~(OFPFF_SEND_FLOW_REM | OFPFF_CHECK_OVERLAP | OFPFF_EMERG); if (flags) { ds_put_format(s, "flags:0x%"PRIx16" ", flags); } } ofpacts_format(fm.ofpacts, fm.ofpacts_len, s); ofpbuf_uninit(&ofpacts); } static void ofp_print_duration(struct ds *string, unsigned int sec, unsigned int nsec) { ds_put_format(string, "%u", sec); if (nsec > 0) { ds_put_format(string, ".%09u", nsec); while (string->string[string->length - 1] == '0') { string->length--; } } ds_put_char(string, 's'); } static const char * ofp_flow_removed_reason_to_string(enum ofp_flow_removed_reason reason) { static char s[32]; switch (reason) { case OFPRR_IDLE_TIMEOUT: return "idle"; case OFPRR_HARD_TIMEOUT: return "hard"; case OFPRR_DELETE: return "delete"; case OFPRR_GROUP_DELETE: return "group_delete"; default: sprintf(s, "%d", (int) reason); return s; } } static void ofp_print_flow_removed(struct ds *string, const struct ofp_header *oh) { struct ofputil_flow_removed fr; enum ofperr error; error = ofputil_decode_flow_removed(&fr, oh); if (error) { ofp_print_error(string, error); return; } ds_put_char(string, ' '); cls_rule_format(&fr.rule, string); ds_put_format(string, " reason=%s", ofp_flow_removed_reason_to_string(fr.reason)); if (fr.cookie != htonll(0)) { ds_put_format(string, " cookie:0x%"PRIx64, ntohll(fr.cookie)); } ds_put_cstr(string, " duration"); ofp_print_duration(string, fr.duration_sec, fr.duration_nsec); ds_put_format(string, " idle%"PRIu16" pkts%"PRIu64" bytes%"PRIu64"\n", fr.idle_timeout, fr.packet_count, fr.byte_count); } static void ofp_print_port_mod(struct ds *string, const struct ofp_header *oh) { struct ofputil_port_mod pm; enum ofperr error; error = ofputil_decode_port_mod(oh, &pm); if (error) { ofp_print_error(string, error); return; } ds_put_format(string, "port: %"PRIu16": addr:"ETH_ADDR_FMT"\n", pm.port_no, ETH_ADDR_ARGS(pm.hw_addr)); ds_put_format(string, " config: "); ofp_print_port_config(string, pm.config); ds_put_format(string, " mask: "); ofp_print_port_config(string, pm.mask); ds_put_format(string, " advertise: "); if (pm.advertise) { ofp_print_port_features(string, pm.advertise); } else { ds_put_format(string, "UNCHANGED\n"); } } static void ofp_print_error(struct ds *string, enum ofperr error) { if (string->length) { ds_put_char(string, ' '); } ds_put_format(string, "***decode error: %s***\n", ofperr_get_name(error)); } static void ofp_print_error_msg(struct ds *string, const struct ofp_error_msg *oem) { size_t len = ntohs(oem->header.length); size_t payload_ofs, payload_len; const void *payload; enum ofperr error; char *s; error = ofperr_decode_msg(&oem->header, &payload_ofs); if (!error) { ds_put_cstr(string, "***decode error***"); ds_put_hex_dump(string, oem->data, len - sizeof *oem, 0, true); return; } ds_put_format(string, " %s\n", ofperr_get_name(error)); payload = (const uint8_t *) oem + payload_ofs; payload_len = len - payload_ofs; if (error == OFPERR_OFPHFC_INCOMPATIBLE || error == OFPERR_OFPHFC_EPERM) { ds_put_printable(string, payload, payload_len); } else { s = ofp_to_string(payload, payload_len, 1); ds_put_cstr(string, s); free(s); } } static void ofp_print_port_status(struct ds *string, const struct ofp_port_status *ops) { struct ofputil_port_status ps; enum ofperr error; error = ofputil_decode_port_status(ops, &ps); if (error) { ofp_print_error(string, error); return; } if (ps.reason == OFPPR_ADD) { ds_put_format(string, " ADD:"); } else if (ps.reason == OFPPR_DELETE) { ds_put_format(string, " DEL:"); } else if (ps.reason == OFPPR_MODIFY) { ds_put_format(string, " MOD:"); } ofp_print_phy_port(string, &ps.desc); } static void ofp_print_ofpst_desc_reply(struct ds *string, const struct ofp_desc_stats *ods) { ds_put_char(string, '\n'); ds_put_format(string, "Manufacturer: %.*s\n", (int) sizeof ods->mfr_desc, ods->mfr_desc); ds_put_format(string, "Hardware: %.*s\n", (int) sizeof ods->hw_desc, ods->hw_desc); ds_put_format(string, "Software: %.*s\n", (int) sizeof ods->sw_desc, ods->sw_desc); ds_put_format(string, "Serial Num: %.*s\n", (int) sizeof ods->serial_num, ods->serial_num); ds_put_format(string, "DP Description: %.*s\n", (int) sizeof ods->dp_desc, ods->dp_desc); } static void ofp_print_flow_stats_request(struct ds *string, const struct ofp_stats_msg *osm) { struct ofputil_flow_stats_request fsr; enum ofperr error; error = ofputil_decode_flow_stats_request(&fsr, &osm->header); if (error) { ofp_print_error(string, error); return; } if (fsr.table_id != 0xff) { ds_put_format(string, " table=%"PRIu8, fsr.table_id); } if (fsr.out_port != OFPP_NONE) { ds_put_cstr(string, " out_port="); ofputil_format_port(fsr.out_port, string); } /* A flow stats request doesn't include a priority, but cls_rule_format() * will print one unless it is OFP_DEFAULT_PRIORITY. */ fsr.match.priority = OFP_DEFAULT_PRIORITY; ds_put_char(string, ' '); cls_rule_format(&fsr.match, string); } static void ofp_print_flow_stats_reply(struct ds *string, const struct ofp_header *oh) { struct ofpbuf ofpacts; struct ofpbuf b; ofpbuf_use_const(&b, oh, ntohs(oh->length)); ofpbuf_init(&ofpacts, 64); for (;;) { struct ofputil_flow_stats fs; int retval; retval = ofputil_decode_flow_stats_reply(&fs, &b, true, &ofpacts); if (retval) { if (retval != EOF) { ds_put_cstr(string, " ***parse error***"); } break; } ds_put_char(string, '\n'); ds_put_format(string, " cookie=0x%"PRIx64", duration=", ntohll(fs.cookie)); ofp_print_duration(string, fs.duration_sec, fs.duration_nsec); ds_put_format(string, ", table=%"PRIu8", ", fs.table_id); ds_put_format(string, "n_packets=%"PRIu64", ", fs.packet_count); ds_put_format(string, "n_bytes=%"PRIu64", ", fs.byte_count); if (fs.idle_timeout != OFP_FLOW_PERMANENT) { ds_put_format(string, "idle_timeout=%"PRIu16", ", fs.idle_timeout); } if (fs.hard_timeout != OFP_FLOW_PERMANENT) { ds_put_format(string, "hard_timeout=%"PRIu16", ", fs.hard_timeout); } if (fs.idle_age >= 0) { ds_put_format(string, "idle_age=%d, ", fs.idle_age); } if (fs.hard_age >= 0 && fs.hard_age != fs.duration_sec) { ds_put_format(string, "hard_age=%d, ", fs.hard_age); } cls_rule_format(&fs.rule, string); if (string->string[string->length - 1] != ' ') { ds_put_char(string, ' '); } ofpacts_format(fs.ofpacts, fs.ofpacts_len, string); } ofpbuf_uninit(&ofpacts); } static void ofp_print_ofpst_aggregate_reply(struct ds *string, const struct ofp_aggregate_stats_reply *asr) { ds_put_format(string, " packet_count=%"PRIu64, ntohll(get_32aligned_be64(&asr->packet_count))); ds_put_format(string, " byte_count=%"PRIu64, ntohll(get_32aligned_be64(&asr->byte_count))); ds_put_format(string, " flow_count=%"PRIu32, ntohl(asr->flow_count)); } static void ofp_print_nxst_aggregate_reply(struct ds *string, const struct nx_aggregate_stats_reply *nasr) { ds_put_format(string, " packet_count=%"PRIu64, ntohll(nasr->packet_count)); ds_put_format(string, " byte_count=%"PRIu64, ntohll(nasr->byte_count)); ds_put_format(string, " flow_count=%"PRIu32, ntohl(nasr->flow_count)); } static void print_port_stat(struct ds *string, const char *leader, const ovs_32aligned_be64 *statp, int more) { uint64_t stat = ntohll(get_32aligned_be64(statp)); ds_put_cstr(string, leader); if (stat != UINT64_MAX) { ds_put_format(string, "%"PRIu64, stat); } else { ds_put_char(string, '?'); } if (more) { ds_put_cstr(string, ", "); } else { ds_put_cstr(string, "\n"); } } static void ofp_print_ofpst_port_request(struct ds *string, const struct ofp_port_stats_request *psr) { ds_put_format(string, " port_no=%"PRIu16, ntohs(psr->port_no)); } static void ofp_print_ofpst_port_reply(struct ds *string, const struct ofp_header *oh, int verbosity) { const struct ofp_port_stats *ps = ofputil_stats_body(oh); size_t n = ofputil_stats_body_len(oh) / sizeof *ps; ds_put_format(string, " %zu ports\n", n); if (verbosity < 1) { return; } for (; n--; ps++) { ds_put_format(string, " port %2"PRIu16": ", ntohs(ps->port_no)); ds_put_cstr(string, "rx "); print_port_stat(string, "pkts=", &ps->rx_packets, 1); print_port_stat(string, "bytes=", &ps->rx_bytes, 1); print_port_stat(string, "drop=", &ps->rx_dropped, 1); print_port_stat(string, "errs=", &ps->rx_errors, 1); print_port_stat(string, "frame=", &ps->rx_frame_err, 1); print_port_stat(string, "over=", &ps->rx_over_err, 1); print_port_stat(string, "crc=", &ps->rx_crc_err, 0); ds_put_cstr(string, " tx "); print_port_stat(string, "pkts=", &ps->tx_packets, 1); print_port_stat(string, "bytes=", &ps->tx_bytes, 1); print_port_stat(string, "drop=", &ps->tx_dropped, 1); print_port_stat(string, "errs=", &ps->tx_errors, 1); print_port_stat(string, "coll=", &ps->collisions, 0); } } static void ofp_print_ofpst_table_reply(struct ds *string, const struct ofp_header *oh, int verbosity) { const struct ofp_table_stats *ts = ofputil_stats_body(oh); size_t n = ofputil_stats_body_len(oh) / sizeof *ts; ds_put_format(string, " %zu tables\n", n); if (verbosity < 1) { return; } for (; n--; ts++) { char name[OFP_MAX_TABLE_NAME_LEN + 1]; ovs_strlcpy(name, ts->name, sizeof name); ds_put_format(string, " %d: %-8s: ", ts->table_id, name); ds_put_format(string, "wild=0x%05"PRIx32", ", ntohl(ts->wildcards)); ds_put_format(string, "max=%6"PRIu32", ", ntohl(ts->max_entries)); ds_put_format(string, "active=%"PRIu32"\n", ntohl(ts->active_count)); ds_put_cstr(string, " "); ds_put_format(string, "lookup=%"PRIu64", ", ntohll(get_32aligned_be64(&ts->lookup_count))); ds_put_format(string, "matched=%"PRIu64"\n", ntohll(get_32aligned_be64(&ts->matched_count))); } } static void ofp_print_queue_name(struct ds *string, uint32_t queue_id) { if (queue_id == OFPQ_ALL) { ds_put_cstr(string, "ALL"); } else { ds_put_format(string, "%"PRIu32, queue_id); } } static void ofp_print_ofpst_queue_request(struct ds *string, const struct ofp_queue_stats_request *qsr) { ds_put_cstr(string, "port="); ofputil_format_port(ntohs(qsr->port_no), string); ds_put_cstr(string, " queue="); ofp_print_queue_name(string, ntohl(qsr->queue_id)); } static void ofp_print_ofpst_queue_reply(struct ds *string, const struct ofp_header *oh, int verbosity) { const struct ofp_queue_stats *qs = ofputil_stats_body(oh); size_t n = ofputil_stats_body_len(oh) / sizeof *qs; ds_put_format(string, " %zu queues\n", n); if (verbosity < 1) { return; } for (; n--; qs++) { ds_put_cstr(string, " port "); ofputil_format_port(ntohs(qs->port_no), string); ds_put_cstr(string, " queue "); ofp_print_queue_name(string, ntohl(qs->queue_id)); ds_put_cstr(string, ": "); print_port_stat(string, "bytes=", &qs->tx_bytes, 1); print_port_stat(string, "pkts=", &qs->tx_packets, 1); print_port_stat(string, "errors=", &qs->tx_errors, 0); } } static void ofp_print_ofpst_port_desc_reply(struct ds *string, const struct ofp_header *oh) { struct ofpbuf b; ofpbuf_use_const(&b, oh, ntohs(oh->length)); ofpbuf_pull(&b, sizeof(struct ofp_stats_msg)); ds_put_char(string, '\n'); ofp_print_phy_ports(string, oh->version, &b); } static void ofp_print_stats_request(struct ds *string, const struct ofp_header *oh) { const struct ofp_stats_msg *srq = (const struct ofp_stats_msg *) oh; if (srq->flags) { ds_put_format(string, " ***unknown flags 0x%04"PRIx16"***", ntohs(srq->flags)); } } static void ofp_print_stats_reply(struct ds *string, const struct ofp_header *oh) { const struct ofp_stats_msg *srp = (const struct ofp_stats_msg *) oh; if (srp->flags) { uint16_t flags = ntohs(srp->flags); ds_put_cstr(string, " flags="); if (flags & OFPSF_REPLY_MORE) { ds_put_cstr(string, "[more]"); flags &= ~OFPSF_REPLY_MORE; } if (flags) { ds_put_format(string, "[***unknown flags 0x%04"PRIx16"***]", flags); } } } static void ofp_print_echo(struct ds *string, const struct ofp_header *oh, int verbosity) { size_t len = ntohs(oh->length); ds_put_format(string, " %zu bytes of payload\n", len - sizeof *oh); if (verbosity > 1) { ds_put_hex_dump(string, oh + 1, len - sizeof *oh, 0, true); } } static void ofp_print_nxt_role_message(struct ds *string, const struct nx_role_request *nrr) { unsigned int role = ntohl(nrr->role); ds_put_cstr(string, " role="); if (role == NX_ROLE_OTHER) { ds_put_cstr(string, "other"); } else if (role == NX_ROLE_MASTER) { ds_put_cstr(string, "master"); } else if (role == NX_ROLE_SLAVE) { ds_put_cstr(string, "slave"); } else { ds_put_format(string, "%u", role); } } static void ofp_print_nxt_flow_mod_table_id(struct ds *string, const struct nx_flow_mod_table_id *nfmti) { ds_put_format(string, " %s", nfmti->set ? "enable" : "disable"); } static void ofp_print_nxt_set_flow_format(struct ds *string, const struct nx_set_flow_format *nsff) { uint32_t format = ntohl(nsff->format); ds_put_cstr(string, " format="); if (ofputil_nx_flow_format_is_valid(format)) { ds_put_cstr(string, ofputil_nx_flow_format_to_string(format)); } else { ds_put_format(string, "%"PRIu32, format); } } static void ofp_print_nxt_set_packet_in_format(struct ds *string, const struct nx_set_packet_in_format *nspf) { uint32_t format = ntohl(nspf->format); ds_put_cstr(string, " format="); if (ofputil_packet_in_format_is_valid(format)) { ds_put_cstr(string, ofputil_packet_in_format_to_string(format)); } else { ds_put_format(string, "%"PRIu32, format); } } static const char * ofp_port_reason_to_string(enum ofp_port_reason reason) { static char s[32]; switch (reason) { case OFPPR_ADD: return "add"; case OFPPR_DELETE: return "delete"; case OFPPR_MODIFY: return "modify"; default: sprintf(s, "%d", (int) reason); return s; } } static void ofp_print_nxt_set_async_config(struct ds *string, const struct nx_async_config *nac) { int i; for (i = 0; i < 2; i++) { int j; ds_put_format(string, "\n %s:\n", i == 0 ? "master" : "slave"); ds_put_cstr(string, " PACKET_IN:"); for (j = 0; j < 32; j++) { if (nac->packet_in_mask[i] & htonl(1u << j)) { ds_put_format(string, " %s", ofputil_packet_in_reason_to_string(j)); } } if (!nac->packet_in_mask[i]) { ds_put_cstr(string, " (off)"); } ds_put_char(string, '\n'); ds_put_cstr(string, " PORT_STATUS:"); for (j = 0; j < 32; j++) { if (nac->port_status_mask[i] & htonl(1u << j)) { ds_put_format(string, " %s", ofp_port_reason_to_string(j)); } } if (!nac->port_status_mask[i]) { ds_put_cstr(string, " (off)"); } ds_put_char(string, '\n'); ds_put_cstr(string, " FLOW_REMOVED:"); for (j = 0; j < 32; j++) { if (nac->flow_removed_mask[i] & htonl(1u << j)) { ds_put_format(string, " %s", ofp_flow_removed_reason_to_string(j)); } } if (!nac->flow_removed_mask[i]) { ds_put_cstr(string, " (off)"); } ds_put_char(string, '\n'); } } static void ofp_print_nxt_set_controller_id(struct ds *string, const struct nx_controller_id *nci) { ds_put_format(string, " id=%"PRIu16, ntohs(nci->controller_id)); } static void ofp_to_string__(const struct ofp_header *oh, const struct ofputil_msg_type *type, struct ds *string, int verbosity) { enum ofputil_msg_code code; const void *msg = oh; ds_put_cstr(string, ofputil_msg_type_name(type)); switch (oh->version) { case OFP10_VERSION: break; case OFP11_VERSION: ds_put_cstr(string, " (OF1.1)"); break; case OFP12_VERSION: ds_put_cstr(string, " (OF1.2)"); break; default: ds_put_format(string, " (OF 0x%02"PRIx8")", oh->version); break; } ds_put_format(string, " (xid=0x%"PRIx32"):", ntohl(oh->xid)); code = ofputil_msg_type_code(type); switch (code) { case OFPUTIL_MSG_INVALID: break; case OFPUTIL_OFPT_HELLO: ds_put_char(string, '\n'); ds_put_hex_dump(string, oh + 1, ntohs(oh->length) - sizeof *oh, 0, true); break; case OFPUTIL_OFPT_ERROR: ofp_print_error_msg(string, msg); break; case OFPUTIL_OFPT_ECHO_REQUEST: case OFPUTIL_OFPT_ECHO_REPLY: ofp_print_echo(string, oh, verbosity); break; case OFPUTIL_OFPT_FEATURES_REQUEST: break; case OFPUTIL_OFPT_FEATURES_REPLY: ofp_print_switch_features(string, msg); break; case OFPUTIL_OFPT_GET_CONFIG_REQUEST: break; case OFPUTIL_OFPT_GET_CONFIG_REPLY: case OFPUTIL_OFPT_SET_CONFIG: ofp_print_switch_config(string, msg); break; case OFPUTIL_OFPT_PACKET_IN: case OFPUTIL_NXT_PACKET_IN: ofp_print_packet_in(string, msg, verbosity); break; case OFPUTIL_OFPT_FLOW_REMOVED: case OFPUTIL_NXT_FLOW_REMOVED: ofp_print_flow_removed(string, msg); break; case OFPUTIL_OFPT_PORT_STATUS: ofp_print_port_status(string, msg); break; case OFPUTIL_OFPT_PACKET_OUT: ofp_print_packet_out(string, msg, verbosity); break; case OFPUTIL_OFPT_FLOW_MOD: case OFPUTIL_NXT_FLOW_MOD: ofp_print_flow_mod(string, msg, code, verbosity); break; case OFPUTIL_OFPT_PORT_MOD: ofp_print_port_mod(string, msg); break; case OFPUTIL_OFPT_BARRIER_REQUEST: case OFPUTIL_OFPT_BARRIER_REPLY: break; case OFPUTIL_OFPT_QUEUE_GET_CONFIG_REQUEST: case OFPUTIL_OFPT_QUEUE_GET_CONFIG_REPLY: /* XXX */ break; case OFPUTIL_OFPST_DESC_REQUEST: case OFPUTIL_OFPST_PORT_DESC_REQUEST: ofp_print_stats_request(string, oh); break; case OFPUTIL_OFPST_FLOW_REQUEST: case OFPUTIL_NXST_FLOW_REQUEST: case OFPUTIL_OFPST_AGGREGATE_REQUEST: case OFPUTIL_NXST_AGGREGATE_REQUEST: ofp_print_stats_request(string, oh); ofp_print_flow_stats_request(string, msg); break; case OFPUTIL_OFPST_TABLE_REQUEST: ofp_print_stats_request(string, oh); break; case OFPUTIL_OFPST_PORT_REQUEST: ofp_print_stats_request(string, oh); ofp_print_ofpst_port_request(string, msg); break; case OFPUTIL_OFPST_QUEUE_REQUEST: ofp_print_stats_request(string, oh); ofp_print_ofpst_queue_request(string, msg); break; case OFPUTIL_OFPST_DESC_REPLY: ofp_print_stats_reply(string, oh); ofp_print_ofpst_desc_reply(string, msg); break; case OFPUTIL_OFPST_FLOW_REPLY: case OFPUTIL_NXST_FLOW_REPLY: ofp_print_stats_reply(string, oh); ofp_print_flow_stats_reply(string, oh); break; case OFPUTIL_OFPST_QUEUE_REPLY: ofp_print_stats_reply(string, oh); ofp_print_ofpst_queue_reply(string, oh, verbosity); break; case OFPUTIL_OFPST_PORT_REPLY: ofp_print_stats_reply(string, oh); ofp_print_ofpst_port_reply(string, oh, verbosity); break; case OFPUTIL_OFPST_TABLE_REPLY: ofp_print_stats_reply(string, oh); ofp_print_ofpst_table_reply(string, oh, verbosity); break; case OFPUTIL_OFPST_AGGREGATE_REPLY: ofp_print_stats_reply(string, oh); ofp_print_ofpst_aggregate_reply(string, msg); break; case OFPUTIL_OFPST_PORT_DESC_REPLY: ofp_print_stats_reply(string, oh); ofp_print_ofpst_port_desc_reply(string, oh); break; case OFPUTIL_NXT_ROLE_REQUEST: case OFPUTIL_NXT_ROLE_REPLY: ofp_print_nxt_role_message(string, msg); break; case OFPUTIL_NXT_FLOW_MOD_TABLE_ID: ofp_print_nxt_flow_mod_table_id(string, msg); break; case OFPUTIL_NXT_SET_FLOW_FORMAT: ofp_print_nxt_set_flow_format(string, msg); break; case OFPUTIL_NXT_SET_PACKET_IN_FORMAT: ofp_print_nxt_set_packet_in_format(string, msg); break; case OFPUTIL_NXT_FLOW_AGE: break; case OFPUTIL_NXT_SET_CONTROLLER_ID: ofp_print_nxt_set_controller_id(string, msg); break; case OFPUTIL_NXT_SET_ASYNC_CONFIG: ofp_print_nxt_set_async_config(string, msg); break; case OFPUTIL_NXST_AGGREGATE_REPLY: ofp_print_stats_reply(string, oh); ofp_print_nxst_aggregate_reply(string, msg); break; } } /* Composes and returns a string representing the OpenFlow packet of 'len' * bytes at 'oh' at the given 'verbosity' level. 0 is a minimal amount of * verbosity and higher numbers increase verbosity. The caller is responsible * for freeing the string. */ char * ofp_to_string(const void *oh_, size_t len, int verbosity) { struct ds string = DS_EMPTY_INITIALIZER; const struct ofp_header *oh = oh_; if (!len) { ds_put_cstr(&string, "OpenFlow message is empty\n"); } else if (len < sizeof(struct ofp_header)) { ds_put_format(&string, "OpenFlow packet too short (only %zu bytes):\n", len); } else if (ntohs(oh->length) > len) { ds_put_format(&string, "(***truncated to %zu bytes from %"PRIu16"***)\n", len, ntohs(oh->length)); } else if (ntohs(oh->length) < len) { ds_put_format(&string, "(***only uses %"PRIu16" bytes out of %zu***)\n", ntohs(oh->length), len); } else { const struct ofputil_msg_type *type; enum ofperr error; error = ofputil_decode_msg_type(oh, &type); if (!error) { ofp_to_string__(oh, type, &string, verbosity); if (verbosity >= 5) { if (ds_last(&string) != '\n') { ds_put_char(&string, '\n'); } ds_put_hex_dump(&string, oh, len, 0, true); } if (ds_last(&string) != '\n') { ds_put_char(&string, '\n'); } return ds_steal_cstr(&string); } ofp_print_error(&string, error); } ds_put_hex_dump(&string, oh, len, 0, true); return ds_steal_cstr(&string); } static void print_and_free(FILE *stream, char *string) { fputs(string, stream); free(string); } /* Pretty-print the OpenFlow packet of 'len' bytes at 'oh' to 'stream' at the * given 'verbosity' level. 0 is a minimal amount of verbosity and higher * numbers increase verbosity. */ void ofp_print(FILE *stream, const void *oh, size_t len, int verbosity) { print_and_free(stream, ofp_to_string(oh, len, verbosity)); } /* Dumps the contents of the Ethernet frame in the 'len' bytes starting at * 'data' to 'stream'. */ void ofp_print_packet(FILE *stream, const void *data, size_t len) { print_and_free(stream, ofp_packet_to_string(data, len)); }