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ofp-print.c
3720 lines (3201 loc) · 110 KB
/
ofp-print.c
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/*
* Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 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 <config.h>
#include <errno.h>
#include <inttypes.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <sys/wait.h>
#include <stdarg.h>
#include <stdlib.h>
#include <ctype.h>
#include "bundle.h"
#include "byte-order.h"
#include "colors.h"
#include "compiler.h"
#include "dp-packet.h"
#include "flow.h"
#include "learn.h"
#include "multipath.h"
#include "netdev.h"
#include "nx-match.h"
#include "odp-util.h"
#include "openflow/nicira-ext.h"
#include "openflow/openflow.h"
#include "openvswitch/dynamic-string.h"
#include "openvswitch/meta-flow.h"
#include "openvswitch/ofp-actions.h"
#include "openvswitch/ofp-errors.h"
#include "openvswitch/ofp-msgs.h"
#include "openvswitch/ofp-print.h"
#include "openvswitch/ofp-util.h"
#include "openvswitch/ofpbuf.h"
#include "openvswitch/type-props.h"
#include "packets.h"
#include "unaligned.h"
#include "util.h"
#include "uuid.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 dp_packet buf;
struct flow flow;
size_t l4_size;
dp_packet_use_const(&buf, data, len);
flow_extract(&buf, &flow);
flow_format(&ds, &flow);
l4_size = dp_packet_l4_size(&buf);
if (flow.nw_proto == IPPROTO_TCP && l4_size >= TCP_HEADER_LEN) {
struct tcp_header *th = dp_packet_l4(&buf);
ds_put_format(&ds, " tcp_csum:%"PRIx16, ntohs(th->tcp_csum));
} else if (flow.nw_proto == IPPROTO_UDP && l4_size >= UDP_HEADER_LEN) {
struct udp_header *uh = dp_packet_l4(&buf);
ds_put_format(&ds, " udp_csum:%"PRIx16, ntohs(uh->udp_csum));
} else if (flow.nw_proto == IPPROTO_SCTP && l4_size >= SCTP_HEADER_LEN) {
struct sctp_header *sh = dp_packet_l4(&buf);
ds_put_format(&ds, " sctp_csum:%"PRIx32,
ntohl(get_16aligned_be32(&sh->sctp_csum)));
} else if (flow.nw_proto == IPPROTO_ICMP && l4_size >= ICMP_HEADER_LEN) {
struct icmp_header *icmph = dp_packet_l4(&buf);
ds_put_format(&ds, " icmp_csum:%"PRIx16,
ntohs(icmph->icmp_csum));
} else if (flow.nw_proto == IPPROTO_ICMPV6 && l4_size >= ICMP6_HEADER_LEN) {
struct icmp6_header *icmp6h = dp_packet_l4(&buf);
ds_put_format(&ds, " icmp6_csum:%"PRIx16,
ntohs(icmp6h->icmp6_cksum));
}
ds_put_char(&ds, '\n');
return ds_cstr(&ds);
}
static void
format_hex_arg(struct ds *s, const uint8_t *data, size_t len)
{
for (size_t i = 0; i < len; i++) {
if (i) {
ds_put_char(s, '.');
}
ds_put_format(s, "%02"PRIx8, data[i]);
}
}
static void
ofp_print_packet_in(struct ds *string, const struct ofp_header *oh,
int verbosity)
{
char reasonbuf[OFPUTIL_PACKET_IN_REASON_BUFSIZE];
struct ofputil_packet_in_private pin;
const struct ofputil_packet_in *public = &pin.public;
uint32_t buffer_id;
size_t total_len;
enum ofperr error;
error = ofputil_decode_packet_in_private(oh, true,
&pin, &total_len, &buffer_id);
if (error) {
ofp_print_error(string, error);
return;
}
if (public->table_id) {
ds_put_format(string, " table_id=%"PRIu8, public->table_id);
}
if (public->cookie != OVS_BE64_MAX) {
ds_put_format(string, " cookie=0x%"PRIx64, ntohll(public->cookie));
}
ds_put_format(string, " total_len=%"PRIuSIZE" ", total_len);
match_format(&public->flow_metadata, string, OFP_DEFAULT_PRIORITY);
ds_put_format(string, " (via %s)",
ofputil_packet_in_reason_to_string(public->reason,
reasonbuf,
sizeof reasonbuf));
ds_put_format(string, " data_len=%"PRIuSIZE, public->packet_len);
if (buffer_id == UINT32_MAX) {
ds_put_format(string, " (unbuffered)");
if (total_len != public->packet_len) {
ds_put_format(string, " (***total_len != data_len***)");
}
} else {
ds_put_format(string, " buffer=0x%08"PRIx32, buffer_id);
if (total_len < public->packet_len) {
ds_put_format(string, " (***total_len < data_len***)");
}
}
ds_put_char(string, '\n');
if (public->userdata_len) {
ds_put_cstr(string, " userdata=");
format_hex_arg(string, pin.public.userdata, pin.public.userdata_len);
ds_put_char(string, '\n');
}
if (!uuid_is_zero(&pin.bridge)) {
ds_put_format(string, " continuation.bridge="UUID_FMT"\n",
UUID_ARGS(&pin.bridge));
}
if (pin.n_stack) {
ds_put_cstr(string, " continuation.stack=");
for (size_t i = 0; i < pin.n_stack; i++) {
if (i) {
ds_put_char(string, ' ');
}
mf_subvalue_format(&pin.stack[i], string);
}
}
if (pin.mirrors) {
ds_put_format(string, " continuation.mirrors=0x%"PRIx32"\n",
pin.mirrors);
}
if (pin.conntracked) {
ds_put_cstr(string, " continuation.conntracked=true\n");
}
if (pin.actions_len) {
ds_put_cstr(string, " continuation.actions=");
ofpacts_format(pin.actions, pin.actions_len, string);
ds_put_char(string, '\n');
}
if (pin.action_set_len) {
ds_put_cstr(string, " continuation.action_set=");
ofpacts_format(pin.action_set, pin.action_set_len, string);
ds_put_char(string, '\n');
}
if (verbosity > 0) {
char *packet = ofp_packet_to_string(public->packet,
public->packet_len);
ds_put_cstr(string, packet);
free(packet);
}
if (verbosity > 2) {
ds_put_hex_dump(string, public->packet, public->packet_len, 0, false);
}
ofputil_packet_in_private_destroy(&pin);
}
static void
ofp_print_packet_out(struct ds *string, const struct ofp_header *oh,
int verbosity)
{
struct ofputil_packet_out po;
struct ofpbuf ofpacts;
enum ofperr error;
ofpbuf_init(&ofpacts, 64);
error = ofputil_decode_packet_out(&po, oh, &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_cstr(string, " actions=");
ofpacts_format(po.ofpacts, po.ofpacts_len, string);
if (po.buffer_id == UINT32_MAX) {
ds_put_format(string, " data_len=%"PRIuSIZE, 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);
}
if (verbosity > 2) {
ds_put_hex_dump(string, po.packet, po.packet_len, 0, false);
}
} else {
ds_put_format(string, " buffer=0x%08"PRIx32, po.buffer_id);
}
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 = ofp_to_u16(a->port_no);
uint16_t bp = ofp_to_u16(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),
char separator)
{
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, separator);
}
ds_put_cstr(string, name);
bits &= ~bit;
}
}
}
if (bits) {
if (n) {
ds_put_char(string, separator);
}
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)
{
struct ofputil_phy_port *ports;
size_t allocated_ports, n_ports;
int retval;
size_t i;
ports = NULL;
allocated_ports = 0;
for (n_ports = 0; ; n_ports++) {
if (n_ports >= allocated_ports) {
ports = x2nrealloc(ports, &allocated_ports, sizeof *ports);
}
retval = ofputil_pull_phy_port(ofp_version, b, &ports[n_ports]);
if (retval) {
break;
}
}
qsort(ports, n_ports, sizeof *ports, compare_ports);
for (i = 0; i < n_ports; i++) {
ofp_print_phy_port(string, &ports[i]);
}
free(ports);
if (retval != EOF) {
ofp_print_error(string, retval);
}
}
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";
case OFPUTIL_C_PORT_BLOCKED: return "PORT_BLOCKED";
}
return NULL;
}
static void
ofp_print_switch_features(struct ds *string, const struct ofp_header *oh)
{
struct ofputil_switch_features features;
struct ofpbuf b = ofpbuf_const_initializer(oh, ntohs(oh->length));
enum ofperr error = ofputil_pull_switch_features(&b, &features);
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,
features.n_tables, features.n_buffers);
if (features.auxiliary_id) {
ds_put_format(string, ", auxiliary_id:%"PRIu8, features.auxiliary_id);
}
ds_put_char(string, '\n');
ds_put_cstr(string, "capabilities: ");
ofp_print_bit_names(string, features.capabilities,
ofputil_capabilities_to_name, ' ');
ds_put_char(string, '\n');
switch ((enum ofp_version)oh->version) {
case OFP10_VERSION:
ds_put_cstr(string, "actions: ");
ofpact_bitmap_format(features.ofpacts, string);
ds_put_char(string, '\n');
break;
case OFP11_VERSION:
case OFP12_VERSION:
break;
case OFP13_VERSION:
case OFP14_VERSION:
case OFP15_VERSION:
case OFP16_VERSION:
return; /* no ports in ofp13_switch_features */
default:
OVS_NOT_REACHED();
}
ofp_print_phy_ports(string, oh->version, &b);
}
static void
ofp_print_switch_config(struct ds *string,
const struct ofputil_switch_config *config)
{
ds_put_format(string, " frags=%s",
ofputil_frag_handling_to_string(config->frag));
if (config->invalid_ttl_to_controller > 0) {
ds_put_format(string, " invalid_ttl_to_controller");
}
ds_put_format(string, " miss_send_len=%"PRIu16"\n", config->miss_send_len);
}
static void
ofp_print_set_config(struct ds *string, const struct ofp_header *oh)
{
struct ofputil_switch_config config;
enum ofperr error;
error = ofputil_decode_set_config(oh, &config);
if (error) {
ofp_print_error(string, error);
return;
}
ofp_print_switch_config(string, &config);
}
static void
ofp_print_get_config_reply(struct ds *string, const struct ofp_header *oh)
{
struct ofputil_switch_config config;
ofputil_decode_get_config_reply(oh, &config);
ofp_print_switch_config(string, &config);
}
static void print_wild(struct ds *string, const char *leader, int is_wild,
int verbosity, const char *format, ...)
OVS_PRINTF_FORMAT(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_wild_port(struct ds *string, const char *leader, int is_wild,
int verbosity, ofp_port_t port)
{
if (is_wild && verbosity < 2) {
return;
}
ds_put_cstr(string, leader);
if (!is_wild) {
ofputil_format_port(port, string);
} 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 if (om->nw_proto == IPPROTO_SCTP) {
ds_put_cstr(&f, "sctp,");
} 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 if (om->dl_type == htons(ETH_TYPE_RARP)){
ds_put_cstr(&f, "rarp,");
} else if (om->dl_type == htons(ETH_TYPE_MPLS)) {
ds_put_cstr(&f, "mpls,");
} else if (om->dl_type == htons(ETH_TYPE_MPLS_MCAST)) {
ds_put_cstr(&f, "mplsm,");
} else {
skip_type = false;
}
}
print_wild_port(&f, "in_port=", w & OFPFW10_IN_PORT, verbosity,
u16_to_ofp(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) ||
om->dl_type == htons(ETH_TYPE_RARP)) {
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));
}
ds_chomp(&f, ',');
return ds_cstr(&f);
}
static void
ofp_print_flow_flags(struct ds *s, enum ofputil_flow_mod_flags flags)
{
if (flags & OFPUTIL_FF_SEND_FLOW_REM) {
ds_put_cstr(s, "send_flow_rem ");
}
if (flags & OFPUTIL_FF_CHECK_OVERLAP) {
ds_put_cstr(s, "check_overlap ");
}
if (flags & OFPUTIL_FF_RESET_COUNTS) {
ds_put_cstr(s, "reset_counts ");
}
if (flags & OFPUTIL_FF_NO_PKT_COUNTS) {
ds_put_cstr(s, "no_packet_counts ");
}
if (flags & OFPUTIL_FF_NO_BYT_COUNTS) {
ds_put_cstr(s, "no_byte_counts ");
}
if (flags & OFPUTIL_FF_HIDDEN_FIELDS) {
ds_put_cstr(s, "allow_hidden_fields ");
}
if (flags & OFPUTIL_FF_NO_READONLY) {
ds_put_cstr(s, "no_readonly_table ");
}
}
static void
ofp_print_flow_mod(struct ds *s, const struct ofp_header *oh, int verbosity)
{
struct ofputil_flow_mod fm;
struct ofpbuf ofpacts;
bool need_priority;
enum ofperr error;
enum ofpraw raw;
enum ofputil_protocol protocol;
protocol = ofputil_protocol_from_ofp_version(oh->version);
protocol = ofputil_protocol_set_tid(protocol, true);
ofpbuf_init(&ofpacts, 64);
error = ofputil_decode_flow_mod(&fm, oh, protocol, &ofpacts,
OFPP_MAX, 255);
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, ' ');
ofpraw_decode(&raw, oh);
if (verbosity >= 3 && raw == OFPRAW_OFPT10_FLOW_MOD) {
const struct ofp10_flow_mod *ofm = ofpmsg_body(oh);
ofp10_match_print(s, &ofm->match, verbosity);
/* ofp_print_match() doesn't print priority. */
need_priority = true;
} else if (verbosity >= 3 && raw == OFPRAW_NXT_FLOW_MOD) {
const struct nx_flow_mod *nfm = ofpmsg_body(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 {
match_format(&fm.match, s, fm.priority);
/* match_format() does print priority. */
need_priority = false;
}
if (ds_last(s) != ' ') {
ds_put_char(s, ' ');
}
if (fm.new_cookie != htonll(0) && fm.new_cookie != OVS_BE64_MAX) {
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.importance != 0) {
ds_put_format(s, "importance:%"PRIu16" ", fm.importance);
}
if (fm.priority != OFP_DEFAULT_PRIORITY && need_priority) {
ds_put_format(s, "pri:%"PRIu16" ", fm.priority);
}
if (fm.buffer_id != UINT32_MAX) {
ds_put_format(s, "buf:0x%"PRIx32" ", fm.buffer_id);
}
if (fm.out_port != OFPP_ANY) {
ds_put_format(s, "out_port:");
ofputil_format_port(fm.out_port, s);
ds_put_char(s, ' ');
}
if (oh->version == OFP10_VERSION || oh->version == OFP11_VERSION) {
/* Don't print the reset_counts flag for OF1.0 and OF1.1 because those
* versions don't really have such a flag and printing one is likely to
* confuse people. */
fm.flags &= ~OFPUTIL_FF_RESET_COUNTS;
}
ofp_print_flow_flags(s, fm.flags);
ds_put_cstr(s, "actions=");
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 there are no fractional seconds, don't print any decimals.
*
* If the fractional seconds can be expressed exactly as milliseconds,
* print 3 decimals. Open vSwitch provides millisecond precision for most
* time measurements, so printing 3 decimals every time makes it easier to
* spot real changes in flow dumps that refresh themselves quickly.
*
* If the fractional seconds are more precise than milliseconds, print the
* number of decimals needed to express them exactly.
*/
if (nsec > 0) {
unsigned int msec = nsec / 1000000;
if (msec * 1000000 == nsec) {
ds_put_format(string, ".%03u", msec);
} else {
ds_put_format(string, ".%09u", nsec);
while (string->string[string->length - 1] == '0') {
string->length--;
}
}
}
ds_put_char(string, 's');
}
/* Returns a string form of 'reason'. The return value is either a statically
* allocated constant string or the 'bufsize'-byte buffer 'reasonbuf'.
* 'bufsize' should be at least OFP_FLOW_REMOVED_REASON_BUFSIZE. */
#define OFP_FLOW_REMOVED_REASON_BUFSIZE (INT_STRLEN(int) + 1)
static const char *
ofp_flow_removed_reason_to_string(enum ofp_flow_removed_reason reason,
char *reasonbuf, size_t bufsize)
{
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";
case OFPRR_EVICTION:
return "eviction";
case OFPRR_METER_DELETE:
return "meter_delete";
case OVS_OFPRR_NONE:
default:
snprintf(reasonbuf, bufsize, "%d", (int) reason);
return reasonbuf;
}
}
static void
ofp_print_flow_removed(struct ds *string, const struct ofp_header *oh)
{
char reasonbuf[OFP_FLOW_REMOVED_REASON_BUFSIZE];
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, ' ');
match_format(&fr.match, string, fr.priority);
ds_put_format(string, " reason=%s",
ofp_flow_removed_reason_to_string(fr.reason, reasonbuf,
sizeof reasonbuf));
if (fr.table_id != 255) {
ds_put_format(string, " table_id=%"PRIu8, fr.table_id);
}
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, fr.idle_timeout);
if (fr.hard_timeout) {
/* The hard timeout was only added in OF1.2, so only print it if it is
* actually in use to avoid gratuitous change to the formatting. */
ds_put_format(string, " hard%"PRIu16, fr.hard_timeout);
}
ds_put_format(string, " pkts%"PRIu64" bytes%"PRIu64"\n",
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, true);
if (error) {
ofp_print_error(string, error);
return;
}
ds_put_cstr(string, " port: ");
ofputil_format_port(pm.port_no, string);