/* * Copyright (c) 2008, 2009, 2010, 2011 Nicira Networks. * * 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 "byte-order.h" #include "compiler.h" #include "dynamic-string.h" #include "flow.h" #include "multipath.h" #include "nx-match.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_port_name(struct ds *string, uint16_t port); static void ofp_print_queue_name(struct ds *string, uint32_t port); static void ofp_print_error(struct ds *, int error); /* Returns a string that represents the contents of the Ethernet frame in the * 'len' bytes starting at 'data' to 'stream' as output by tcpdump. * 'total_len' specifies the full length of the Ethernet frame (of which 'len' * bytes were captured). * * The caller must free the returned string. * * This starts and kills a tcpdump subprocess so it's quite expensive. */ char * ofp_packet_to_string(const void *data, size_t len, size_t total_len OVS_UNUSED) { struct ds ds = DS_EMPTY_INITIALIZER; struct ofpbuf buf; char command[128]; FILE *pcap; FILE *tcpdump; int status; int c; ofpbuf_use_const(&buf, data, len); pcap = tmpfile(); if (!pcap) { ovs_error(errno, "tmpfile"); return xstrdup(""); } pcap_write_header(pcap); pcap_write(pcap, &buf); fflush(pcap); if (ferror(pcap)) { ovs_error(errno, "error writing temporary file"); } rewind(pcap); snprintf(command, sizeof command, "/usr/sbin/tcpdump -t -e -n -r /dev/fd/%d 2>/dev/null", fileno(pcap)); tcpdump = popen(command, "r"); fclose(pcap); if (!tcpdump) { ovs_error(errno, "exec(\"%s\")", command); return xstrdup(""); } while ((c = getc(tcpdump)) != EOF) { ds_put_char(&ds, c); } status = pclose(tcpdump); if (WIFEXITED(status)) { if (WEXITSTATUS(status)) ovs_error(0, "tcpdump exited with status %d", WEXITSTATUS(status)); } else if (WIFSIGNALED(status)) { ovs_error(0, "tcpdump exited with signal %d", WTERMSIG(status)); } return ds_cstr(&ds); } static void ofp_print_packet_in(struct ds *string, const struct ofp_packet_in *op, int verbosity) { size_t len = ntohs(op->header.length); size_t data_len; ds_put_format(string, " total_len=%"PRIu16" in_port=", ntohs(op->total_len)); ofp_print_port_name(string, ntohs(op->in_port)); if (op->reason == OFPR_ACTION) ds_put_cstr(string, " (via action)"); else if (op->reason != OFPR_NO_MATCH) ds_put_format(string, " (***reason %"PRIu8"***)", op->reason); data_len = len - offsetof(struct ofp_packet_in, data); ds_put_format(string, " data_len=%zu", data_len); if (htonl(op->buffer_id) == UINT32_MAX) { ds_put_format(string, " (unbuffered)"); if (ntohs(op->total_len) != data_len) ds_put_format(string, " (***total_len != data_len***)"); } else { ds_put_format(string, " buffer=0x%08"PRIx32, ntohl(op->buffer_id)); if (ntohs(op->total_len) < data_len) ds_put_format(string, " (***total_len < data_len***)"); } ds_put_char(string, '\n'); if (verbosity > 0) { struct flow flow; struct ofpbuf packet; ofpbuf_use_const(&packet, op->data, data_len); flow_extract(&packet, 0, ntohs(op->in_port), &flow); flow_format(string, &flow); ds_put_char(string, '\n'); } if (verbosity > 1) { char *packet = ofp_packet_to_string(op->data, data_len, ntohs(op->total_len)); ds_put_cstr(string, packet); free(packet); } } static void ofp_print_port_name(struct ds *string, uint16_t port) { const char *name; switch (port) { case OFPP_IN_PORT: name = "IN_PORT"; break; case OFPP_TABLE: name = "TABLE"; break; case OFPP_NORMAL: name = "NORMAL"; break; case OFPP_FLOOD: name = "FLOOD"; break; case OFPP_ALL: name = "ALL"; break; case OFPP_CONTROLLER: name = "CONTROLLER"; break; case OFPP_LOCAL: name = "LOCAL"; break; case OFPP_NONE: name = "NONE"; break; default: ds_put_format(string, "%"PRIu16, port); return; } ds_put_cstr(string, name); } static void print_note(struct ds *string, const struct nx_action_note *nan) { size_t len; size_t i; ds_put_cstr(string, "note:"); len = ntohs(nan->len) - offsetof(struct nx_action_note, note); for (i = 0; i < len; i++) { if (i) { ds_put_char(string, '.'); } ds_put_format(string, "%02"PRIx8, nan->note[i]); } } static int nx_action_len(enum nx_action_subtype subtype) { switch (subtype) { case NXAST_SNAT__OBSOLETE: return -1; case NXAST_RESUBMIT: return sizeof(struct nx_action_resubmit); case NXAST_SET_TUNNEL: return sizeof(struct nx_action_set_tunnel); case NXAST_DROP_SPOOFED_ARP: return sizeof(struct nx_action_drop_spoofed_arp); case NXAST_SET_QUEUE: return sizeof(struct nx_action_set_queue); case NXAST_POP_QUEUE: return sizeof(struct nx_action_pop_queue); case NXAST_REG_MOVE: return sizeof(struct nx_action_reg_move); case NXAST_REG_LOAD: return sizeof(struct nx_action_reg_load); case NXAST_NOTE: return -1; case NXAST_SET_TUNNEL64: return sizeof(struct nx_action_set_tunnel64); case NXAST_MULTIPATH: return sizeof(struct nx_action_multipath); default: return -1; } } static void ofp_print_nx_action(struct ds *string, const struct nx_action_header *nah) { uint16_t subtype = ntohs(nah->subtype); int required_len = nx_action_len(subtype); int len = ntohs(nah->len); if (required_len != -1 && required_len != len) { ds_put_format(string, "***Nicira action %"PRIu16" wrong length: %d***", subtype, len); return; } if (subtype <= TYPE_MAXIMUM(enum nx_action_subtype)) { const struct nx_action_set_tunnel64 *nast64; const struct nx_action_set_tunnel *nast; const struct nx_action_set_queue *nasq; const struct nx_action_resubmit *nar; const struct nx_action_reg_move *move; const struct nx_action_reg_load *load; const struct nx_action_multipath *nam; switch ((enum nx_action_subtype) subtype) { case NXAST_RESUBMIT: nar = (struct nx_action_resubmit *)nah; ds_put_format(string, "resubmit:"); ofp_print_port_name(string, ntohs(nar->in_port)); return; case NXAST_SET_TUNNEL: nast = (struct nx_action_set_tunnel *)nah; ds_put_format(string, "set_tunnel:%#"PRIx32, ntohl(nast->tun_id)); return; case NXAST_DROP_SPOOFED_ARP: ds_put_cstr(string, "drop_spoofed_arp"); return; case NXAST_SET_QUEUE: nasq = (struct nx_action_set_queue *)nah; ds_put_format(string, "set_queue:%u", ntohl(nasq->queue_id)); return; case NXAST_POP_QUEUE: ds_put_cstr(string, "pop_queue"); return; case NXAST_NOTE: print_note(string, (const struct nx_action_note *) nah); return; case NXAST_REG_MOVE: move = (const struct nx_action_reg_move *) nah; nxm_format_reg_move(move, string); return; case NXAST_REG_LOAD: load = (const struct nx_action_reg_load *) nah; nxm_format_reg_load(load, string); return; case NXAST_SET_TUNNEL64: nast64 = (const struct nx_action_set_tunnel64 *) nah; ds_put_format(string, "set_tunnel64:%#"PRIx64, ntohll(nast64->tun_id)); return; case NXAST_MULTIPATH: nam = (const struct nx_action_multipath *) nah; multipath_format(nam, string); return; case NXAST_SNAT__OBSOLETE: default: break; } } ds_put_format(string, "***unknown Nicira action:%"PRIu16"***", subtype); } static int ofp_action_len(enum ofp_action_type type) { switch (type) { case OFPAT_OUTPUT: return sizeof(struct ofp_action_output); case OFPAT_SET_VLAN_VID: return sizeof(struct ofp_action_vlan_vid); case OFPAT_SET_VLAN_PCP: return sizeof(struct ofp_action_vlan_pcp); case OFPAT_STRIP_VLAN: return sizeof(struct ofp_action_header); case OFPAT_SET_DL_SRC: return sizeof(struct ofp_action_dl_addr); case OFPAT_SET_DL_DST: return sizeof(struct ofp_action_dl_addr); case OFPAT_SET_NW_SRC: return sizeof(struct ofp_action_nw_addr); case OFPAT_SET_NW_DST: return sizeof(struct ofp_action_nw_addr); case OFPAT_SET_NW_TOS: return sizeof(struct ofp_action_nw_tos); case OFPAT_SET_TP_SRC: return sizeof(struct ofp_action_tp_port); case OFPAT_SET_TP_DST: return sizeof(struct ofp_action_tp_port); case OFPAT_ENQUEUE: return sizeof(struct ofp_action_enqueue); case OFPAT_VENDOR: return -1; default: return -1; } } static int ofp_print_action(struct ds *string, const struct ofp_action_header *ah, size_t actions_len) { enum ofp_action_type type; int required_len; size_t len; if (actions_len < sizeof *ah) { ds_put_format(string, "***action array too short for next action***\n"); return -1; } type = ntohs(ah->type); len = ntohs(ah->len); if (actions_len < len) { ds_put_format(string, "***truncated action %d***\n", (int) type); return -1; } if (!len) { ds_put_format(string, "***zero-length action***\n"); return 8; } if ((len % OFP_ACTION_ALIGN) != 0) { ds_put_format(string, "***action %d length not a multiple of %d***\n", (int) type, OFP_ACTION_ALIGN); return -1; } required_len = ofp_action_len(type); if (required_len >= 0 && len != required_len) { ds_put_format(string, "***action %d wrong length: %zu***\n", (int) type, len); return -1; } switch (type) { case OFPAT_OUTPUT: { struct ofp_action_output *oa = (struct ofp_action_output *)ah; uint16_t port = ntohs(oa->port); if (port < OFPP_MAX) { ds_put_format(string, "output:%"PRIu16, port); } else { ofp_print_port_name(string, port); if (port == OFPP_CONTROLLER) { if (oa->max_len) { ds_put_format(string, ":%"PRIu16, ntohs(oa->max_len)); } else { ds_put_cstr(string, ":all"); } } } break; } case OFPAT_ENQUEUE: { struct ofp_action_enqueue *ea = (struct ofp_action_enqueue *)ah; unsigned int port = ntohs(ea->port); unsigned int queue_id = ntohl(ea->queue_id); ds_put_format(string, "enqueue:"); if (port != OFPP_IN_PORT) { ds_put_format(string, "%u", port); } else { ds_put_cstr(string, "IN_PORT"); } ds_put_format(string, "q%u", queue_id); break; } case OFPAT_SET_VLAN_VID: { struct ofp_action_vlan_vid *va = (struct ofp_action_vlan_vid *)ah; ds_put_format(string, "mod_vlan_vid:%"PRIu16, ntohs(va->vlan_vid)); break; } case OFPAT_SET_VLAN_PCP: { struct ofp_action_vlan_pcp *va = (struct ofp_action_vlan_pcp *)ah; ds_put_format(string, "mod_vlan_pcp:%"PRIu8, va->vlan_pcp); break; } case OFPAT_STRIP_VLAN: ds_put_cstr(string, "strip_vlan"); break; case OFPAT_SET_DL_SRC: { struct ofp_action_dl_addr *da = (struct ofp_action_dl_addr *)ah; ds_put_format(string, "mod_dl_src:"ETH_ADDR_FMT, ETH_ADDR_ARGS(da->dl_addr)); break; } case OFPAT_SET_DL_DST: { struct ofp_action_dl_addr *da = (struct ofp_action_dl_addr *)ah; ds_put_format(string, "mod_dl_dst:"ETH_ADDR_FMT, ETH_ADDR_ARGS(da->dl_addr)); break; } case OFPAT_SET_NW_SRC: { struct ofp_action_nw_addr *na = (struct ofp_action_nw_addr *)ah; ds_put_format(string, "mod_nw_src:"IP_FMT, IP_ARGS(&na->nw_addr)); break; } case OFPAT_SET_NW_DST: { struct ofp_action_nw_addr *na = (struct ofp_action_nw_addr *)ah; ds_put_format(string, "mod_nw_dst:"IP_FMT, IP_ARGS(&na->nw_addr)); break; } case OFPAT_SET_NW_TOS: { struct ofp_action_nw_tos *nt = (struct ofp_action_nw_tos *)ah; ds_put_format(string, "mod_nw_tos:%d", nt->nw_tos); break; } case OFPAT_SET_TP_SRC: { struct ofp_action_tp_port *ta = (struct ofp_action_tp_port *)ah; ds_put_format(string, "mod_tp_src:%d", ntohs(ta->tp_port)); break; } case OFPAT_SET_TP_DST: { struct ofp_action_tp_port *ta = (struct ofp_action_tp_port *)ah; ds_put_format(string, "mod_tp_dst:%d", ntohs(ta->tp_port)); break; } case OFPAT_VENDOR: { struct ofp_action_vendor_header *avh = (struct ofp_action_vendor_header *)ah; if (len < sizeof *avh) { ds_put_format(string, "***ofpat_vendor truncated***\n"); return -1; } if (avh->vendor == htonl(NX_VENDOR_ID)) { ofp_print_nx_action(string, (struct nx_action_header *)avh); } else { ds_put_format(string, "vendor action:0x%x", ntohl(avh->vendor)); } break; } default: ds_put_format(string, "(decoder %d not implemented)", (int) type); break; } return len; } void ofp_print_actions(struct ds *string, const struct ofp_action_header *action, size_t actions_len) { uint8_t *p = (uint8_t *)action; int len = 0; ds_put_cstr(string, "actions="); if (!actions_len) { ds_put_cstr(string, "drop"); } while (actions_len > 0) { if (len) { ds_put_cstr(string, ","); } len = ofp_print_action(string, (struct ofp_action_header *)p, actions_len); if (len < 0) { return; } p += len; actions_len -= len; } } static void ofp_print_packet_out(struct ds *string, const struct ofp_packet_out *opo, int verbosity) { size_t len = ntohs(opo->header.length); size_t actions_len = ntohs(opo->actions_len); ds_put_cstr(string, " in_port="); ofp_print_port_name(string, ntohs(opo->in_port)); ds_put_format(string, " actions_len=%zu ", actions_len); if (actions_len > (ntohs(opo->header.length) - sizeof *opo)) { ds_put_format(string, "***packet too short for action length***\n"); return; } ofp_print_actions(string, opo->actions, actions_len); if (ntohl(opo->buffer_id) == UINT32_MAX) { int data_len = len - sizeof *opo - actions_len; ds_put_format(string, " data_len=%d", data_len); if (verbosity > 0 && len > sizeof *opo) { char *packet = ofp_packet_to_string( (uint8_t *)opo->actions + actions_len, data_len, data_len); ds_put_char(string, '\n'); ds_put_cstr(string, packet); free(packet); } } else { ds_put_format(string, " buffer=0x%08"PRIx32, ntohl(opo->buffer_id)); } ds_put_char(string, '\n'); } /* qsort comparison function. */ static int compare_ports(const void *a_, const void *b_) { const struct ofp_phy_port *a = a_; const struct ofp_phy_port *b = b_; uint16_t ap = ntohs(a->port_no); uint16_t bp = ntohs(b->port_no); return ap < bp ? -1 : ap > bp; } static void ofp_print_port_features(struct ds *string, uint32_t features) { if (features == 0) { ds_put_cstr(string, "Unsupported\n"); return; } if (features & OFPPF_10MB_HD) { ds_put_cstr(string, "10MB-HD "); } if (features & OFPPF_10MB_FD) { ds_put_cstr(string, "10MB-FD "); } if (features & OFPPF_100MB_HD) { ds_put_cstr(string, "100MB-HD "); } if (features & OFPPF_100MB_FD) { ds_put_cstr(string, "100MB-FD "); } if (features & OFPPF_1GB_HD) { ds_put_cstr(string, "1GB-HD "); } if (features & OFPPF_1GB_FD) { ds_put_cstr(string, "1GB-FD "); } if (features & OFPPF_10GB_FD) { ds_put_cstr(string, "10GB-FD "); } if (features & OFPPF_COPPER) { ds_put_cstr(string, "COPPER "); } if (features & OFPPF_FIBER) { ds_put_cstr(string, "FIBER "); } if (features & OFPPF_AUTONEG) { ds_put_cstr(string, "AUTO_NEG "); } if (features & OFPPF_PAUSE) { ds_put_cstr(string, "AUTO_PAUSE "); } if (features & OFPPF_PAUSE_ASYM) { ds_put_cstr(string, "AUTO_PAUSE_ASYM "); } ds_put_char(string, '\n'); } static void ofp_print_phy_port(struct ds *string, const struct ofp_phy_port *port) { char name[OFP_MAX_PORT_NAME_LEN]; 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, ' '); ofp_print_port_name(string, ntohs(port->port_no)); ds_put_format(string, "(%s): addr:"ETH_ADDR_FMT", config: %#x, state:%#x\n", name, ETH_ADDR_ARGS(port->hw_addr), ntohl(port->config), ntohl(port->state)); if (port->curr) { ds_put_format(string, " current: "); ofp_print_port_features(string, ntohl(port->curr)); } if (port->advertised) { ds_put_format(string, " advertised: "); ofp_print_port_features(string, ntohl(port->advertised)); } if (port->supported) { ds_put_format(string, " supported: "); ofp_print_port_features(string, ntohl(port->supported)); } if (port->peer) { ds_put_format(string, " peer: "); ofp_print_port_features(string, ntohl(port->peer)); } } static void ofp_print_switch_features(struct ds *string, const struct ofp_switch_features *osf) { size_t len = ntohs(osf->header.length); struct ofp_phy_port *port_list; int n_ports; int i; ds_put_format(string, " ver:0x%x, dpid:%016"PRIx64"\n", osf->header.version, ntohll(osf->datapath_id)); ds_put_format(string, "n_tables:%d, n_buffers:%d\n", osf->n_tables, ntohl(osf->n_buffers)); ds_put_format(string, "features: capabilities:%#x, actions:%#x\n", ntohl(osf->capabilities), ntohl(osf->actions)); n_ports = (len - sizeof *osf) / sizeof *osf->ports; port_list = xmemdup(osf->ports, len - sizeof *osf); qsort(port_list, n_ports, sizeof *port_list, compare_ports); for (i = 0; i < n_ports; i++) { ofp_print_phy_port(string, &port_list[i]); } free(port_list); } static void ofp_print_switch_config(struct ds *string, const struct ofp_switch_config *osc) { uint16_t flags; flags = ntohs(osc->flags); ds_put_cstr(string, " frags="); switch (flags & OFPC_FRAG_MASK) { case OFPC_FRAG_NORMAL: ds_put_cstr(string, "normal"); flags &= ~OFPC_FRAG_MASK; break; case OFPC_FRAG_DROP: ds_put_cstr(string, "drop"); flags &= ~OFPC_FRAG_MASK; break; case OFPC_FRAG_REASM: ds_put_cstr(string, "reassemble"); flags &= ~OFPC_FRAG_MASK; break; } 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, uint32_t 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 ofp_print_match(struct ds *f, const struct ofp_match *om, int verbosity) { char *s = ofp_match_to_string(om, verbosity); ds_put_cstr(f, s); free(s); } char * ofp_match_to_string(const struct ofp_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 & OFPFW_DL_TYPE)) { skip_type = true; if (om->dl_type == htons(ETH_TYPE_IP)) { if (!(w & OFPFW_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; } } if (w & NXFW_TUN_ID) { ds_put_cstr(&f, "tun_id_wild,"); } print_wild(&f, "in_port=", w & OFPFW_IN_PORT, verbosity, "%d", ntohs(om->in_port)); print_wild(&f, "dl_vlan=", w & OFPFW_DL_VLAN, verbosity, "%d", ntohs(om->dl_vlan)); print_wild(&f, "dl_vlan_pcp=", w & OFPFW_DL_VLAN_PCP, verbosity, "%d", om->dl_vlan_pcp); print_wild(&f, "dl_src=", w & OFPFW_DL_SRC, verbosity, ETH_ADDR_FMT, ETH_ADDR_ARGS(om->dl_src)); print_wild(&f, "dl_dst=", w & OFPFW_DL_DST, verbosity, ETH_ADDR_FMT, ETH_ADDR_ARGS(om->dl_dst)); if (!skip_type) { print_wild(&f, "dl_type=", w & OFPFW_DL_TYPE, verbosity, "0x%04x", ntohs(om->dl_type)); } print_ip_netmask(&f, "nw_src=", om->nw_src, (w & OFPFW_NW_SRC_MASK) >> OFPFW_NW_SRC_SHIFT, verbosity); print_ip_netmask(&f, "nw_dst=", om->nw_dst, (w & OFPFW_NW_DST_MASK) >> OFPFW_NW_DST_SHIFT, verbosity); if (!skip_proto) { if (om->dl_type == htons(ETH_TYPE_ARP)) { print_wild(&f, "opcode=", w & OFPFW_NW_PROTO, verbosity, "%u", om->nw_proto); } else { print_wild(&f, "nw_proto=", w & OFPFW_NW_PROTO, verbosity, "%u", om->nw_proto); } } print_wild(&f, "nw_tos=", w & OFPFW_NW_TOS, verbosity, "%u", om->nw_tos); if (om->nw_proto == IPPROTO_ICMP) { print_wild(&f, "icmp_type=", w & OFPFW_ICMP_TYPE, verbosity, "%d", ntohs(om->icmp_type)); print_wild(&f, "icmp_code=", w & OFPFW_ICMP_CODE, verbosity, "%d", ntohs(om->icmp_code)); } else { print_wild(&f, "tp_src=", w & OFPFW_TP_SRC, verbosity, "%d", ntohs(om->tp_src)); print_wild(&f, "tp_dst=", w & OFPFW_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 flow_mod fm; bool need_priority; int error; error = ofputil_decode_flow_mod(&fm, oh, NXFF_OPENFLOW10); if (error) { 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); } ds_put_char(s, ' '); if (verbosity >= 3 && code == OFPUTIL_OFPT_FLOW_MOD) { const struct ofp_flow_mod *ofm = (const struct ofp_flow_mod *) oh; ofp_print_match(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.cookie != htonll(0)) { ds_put_format(s, "cookie:0x%"PRIx64" ", ntohll(fm.cookie)); } 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) { ds_put_format(s, "flags:0x%"PRIx16" ", fm.flags); } ofp_print_actions(s, (const struct ofp_action_header *) fm.actions, fm.n_actions * sizeof *fm.actions); } 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 void ofp_print_flow_removed(struct ds *string, const struct ofp_header *oh) { struct ofputil_flow_removed fr; int error; error = ofputil_decode_flow_removed(&fr, oh, NXFF_OPENFLOW10); if (error) { ofp_print_error(string, error); return; } ds_put_char(string, ' '); cls_rule_format(&fr.rule, string); ds_put_cstr(string, " reason="); switch (fr.reason) { case OFPRR_IDLE_TIMEOUT: ds_put_cstr(string, "idle"); break; case OFPRR_HARD_TIMEOUT: ds_put_cstr(string, "hard"); break; case OFPRR_DELETE: ds_put_cstr(string, "delete"); break; default: ds_put_format(string, "**%"PRIu8"**", fr.reason); break; } 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_port_mod *opm) { ds_put_format(string, "port: %d: addr:"ETH_ADDR_FMT", config: %#x, mask:%#x\n", ntohs(opm->port_no), ETH_ADDR_ARGS(opm->hw_addr), ntohl(opm->config), ntohl(opm->mask)); ds_put_format(string, " advertise: "); if (opm->advertise) { ofp_print_port_features(string, ntohl(opm->advertise)); } else { ds_put_format(string, "UNCHANGED\n"); } } static void ofp_print_error(struct ds *string, int error) { if (string->length) { ds_put_char(string, ' '); } ds_put_cstr(string, "***decode error: "); ofputil_format_error(string, error); ds_put_cstr(string, "***\n"); } 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; int error; char *s; error = ofputil_decode_error_msg(&oem->header, &payload_ofs); if (!is_ofp_error(error)) { ofp_print_error(string, error); ds_put_hex_dump(string, oem->data, len - sizeof *oem, 0, true); return; } ds_put_char(string, ' '); ofputil_format_error(string, error); ds_put_char(string, '\n'); payload = (const uint8_t *) oem + payload_ofs; payload_len = len - payload_ofs; switch (get_ofp_err_type(error)) { case OFPET_HELLO_FAILED: ds_put_printable(string, payload, payload_len); break; case OFPET_BAD_REQUEST: s = ofp_to_string(payload, payload_len, 1); ds_put_cstr(string, s); free(s); break; default: ds_put_hex_dump(string, payload, payload_len, 0, true); break; } } static void ofp_print_port_status(struct ds *string, const struct ofp_port_status *ops) { if (ops->reason == OFPPR_ADD) { ds_put_format(string, " ADD:"); } else if (ops->reason == OFPPR_DELETE) { ds_put_format(string, " DEL:"); } else if (ops->reason == OFPPR_MODIFY) { ds_put_format(string, " MOD:"); } ofp_print_phy_port(string, &ops->desc); } static void ofp_print_ofpst_desc_reply(struct ds *string, const struct ofp_header *oh) { const struct ofp_desc_stats *ods = ofputil_stats_body(oh); 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_header *oh) { struct flow_stats_request fsr; int error; error = ofputil_decode_flow_stats_request(&fsr, oh, NXFF_OPENFLOW10); if (error) { ofp_print_error(string, error); return; } if (fsr.table_id != 0xff) { ds_put_format(string, " table_id=%"PRIu8, fsr.table_id); } if (fsr.out_port != OFPP_NONE) { ds_put_cstr(string, " out_port="); ofp_print_port_name(string, fsr.out_port); } /* 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 b; ofpbuf_use_const(&b, oh, ntohs(oh->length)); for (;;) { struct ofputil_flow_stats fs; int retval; retval = ofputil_decode_flow_stats_reply(&fs, &b, NXFF_OPENFLOW10); 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_id=%"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); } cls_rule_format(&fs.rule, string); ds_put_char(string, ' '); ofp_print_actions(string, (const struct ofp_action_header *) fs.actions, fs.n_actions * sizeof *fs.actions); } } static void ofp_print_ofp_aggregate_stats_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_ofpst_aggregate_reply(struct ds *string, const struct ofp_header *oh) { ofp_print_ofp_aggregate_stats_reply(string, ofputil_stats_body(oh)); } static void ofp_print_nxst_aggregate_reply(struct ds *string, const struct nx_aggregate_stats_reply *nasr) { ofp_print_ofp_aggregate_stats_reply(string, &nasr->asr); } 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_header *oh) { const struct ofp_port_stats_request *psr = ofputil_stats_body(oh); 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_header *oh) { const struct ofp_queue_stats_request *qsr = ofputil_stats_body(oh); ds_put_cstr(string, "port="); ofp_print_port_name(string, ntohs(qsr->port_no)); 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 "); ofp_print_port_name(string, ntohs(qs->port_no)); 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_stats_request(struct ds *string, const struct ofp_header *oh) { const struct ofp_stats_request *srq = (const struct ofp_stats_request *) 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_reply *srp = (const struct ofp_stats_reply *) 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_tun_id_from_cookie(struct ds *string, const struct nxt_tun_id_cookie *ntic) { ds_put_format(string, " set=%"PRIu8, ntic->set); } 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_set_flow_format(struct ds *string, const struct nxt_set_flow_format *nsff) { uint32_t format = ntohl(nsff->format); ds_put_cstr(string, " format="); if (ofputil_flow_format_is_valid(format)) { ds_put_cstr(string, ofputil_flow_format_to_string(format)); } else { ds_put_format(string, "%"PRIu32, format); } } 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_format(string, "%s (xid=0x%"PRIx32"):", ofputil_msg_type_name(type), ntohl(oh->xid)); code = ofputil_msg_type_code(type); switch (code) { case OFPUTIL_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: 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: 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: 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, oh); 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, oh); break; case OFPUTIL_OFPST_QUEUE_REQUEST: ofp_print_stats_request(string, oh); ofp_print_ofpst_queue_request(string, oh); break; case OFPUTIL_OFPST_DESC_REPLY: ofp_print_stats_reply(string, oh); ofp_print_ofpst_desc_reply(string, oh); 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, oh); break; case OFPUTIL_NXT_TUN_ID_FROM_COOKIE: ofp_print_nxt_tun_id_from_cookie(string, msg); break; case OFPUTIL_NXT_ROLE_REQUEST: case OFPUTIL_NXT_ROLE_REPLY: ofp_print_nxt_role_message(string, msg); break; case OFPUTIL_NXT_SET_FLOW_FORMAT: ofp_print_nxt_set_flow_format(string, msg); break; case OFPUTIL_NXT_FLOW_MOD: ofp_print_flow_mod(string, msg, code, verbosity); 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 (oh->version != OFP_VERSION) { ds_put_format(&string, "Bad OpenFlow version %"PRIu8":\n", oh->version); } 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; int 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); } /* Returns the name for the specified OpenFlow message type as a string, * e.g. "OFPT_FEATURES_REPLY". If no name is known, the string returned is a * hex number, e.g. "0x55". * * The caller must free the returned string when it is no longer needed. */ char * ofp_message_type_to_string(uint8_t type) { const char *name; switch (type) { case OFPT_HELLO: name = "HELLO"; break; case OFPT_ERROR: name = "ERROR"; break; case OFPT_ECHO_REQUEST: name = "ECHO_REQUEST"; break; case OFPT_ECHO_REPLY: name = "ECHO_REPLY"; break; case OFPT_VENDOR: name = "VENDOR"; break; case OFPT_FEATURES_REQUEST: name = "FEATURES_REQUEST"; break; case OFPT_FEATURES_REPLY: name = "FEATURES_REPLY"; break; case OFPT_GET_CONFIG_REQUEST: name = "GET_CONFIG_REQUEST"; break; case OFPT_GET_CONFIG_REPLY: name = "GET_CONFIG_REPLY"; break; case OFPT_SET_CONFIG: name = "SET_CONFIG"; break; case OFPT_PACKET_IN: name = "PACKET_IN"; break; case OFPT_FLOW_REMOVED: name = "FLOW_REMOVED"; break; case OFPT_PORT_STATUS: name = "PORT_STATUS"; break; case OFPT_PACKET_OUT: name = "PACKET_OUT"; break; case OFPT_FLOW_MOD: name = "FLOW_MOD"; break; case OFPT_PORT_MOD: name = "PORT_MOD"; break; case OFPT_STATS_REQUEST: name = "STATS_REQUEST"; break; case OFPT_STATS_REPLY: name = "STATS_REPLY"; break; case OFPT_BARRIER_REQUEST: name = "BARRIER_REQUEST"; break; case OFPT_BARRIER_REPLY: name = "BARRIER_REPLY"; break; case OFPT_QUEUE_GET_CONFIG_REQUEST: name = "QUEUE_GET_CONFIG_REQUEST"; break; case OFPT_QUEUE_GET_CONFIG_REPLY: name = "QUEUE_GET_CONFIG_REPLY"; break; default: name = NULL; break; } return name ? xasprintf("OFPT_%s", name) : xasprintf("0x%02"PRIx8, type); } 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' using tcpdump. 'total_len' specifies the full length of * the Ethernet frame (of which 'len' bytes were captured). * * This starts and kills a tcpdump subprocess so it's quite expensive. */ void ofp_print_packet(FILE *stream, const void *data, size_t len, size_t total_len) { print_and_free(stream, ofp_packet_to_string(data, len, total_len)); }