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openflow/utilities/dpctl.c
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/* Copyright (c) 2008 The Board of Trustees of The Leland Stanford
* Junior University
*
* We are making the OpenFlow specification and associated documentation
* (Software) available for public use and benefit with the expectation
* that others will use, modify and enhance the Software and contribute
* those enhancements back to the community. However, since we would
* like to make the Software available for broadest use, with as few
* restrictions as possible permission is hereby granted, free of
* charge, to any person obtaining a copy of this Software to deal in
* the Software under the copyrights without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* The name and trademarks of copyright holder(s) may NOT be used in
* advertising or publicity pertaining to the Software or any
* derivatives without specific, written prior permission.
*/
#include <config.h>
#include <arpa/inet.h>
#include <errno.h>
#include <getopt.h>
#include <inttypes.h>
#include <netinet/in.h>
#include <signal.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/time.h>
#ifdef HAVE_NETLINK
#include "netdev.h"
#include "netlink.h"
#include "openflow-netlink.h"
#endif
#include "buffer.h"
#include "command-line.h"
#include "compiler.h"
#include "dpif.h"
#include "nicira-ext.h"
#include "ofp-print.h"
#include "openflow.h"
#include "packets.h"
#include "random.h"
#include "socket-util.h"
#include "timeval.h"
#include "util.h"
#include "vconn-ssl.h"
#include "vconn.h"
#include "vlog.h"
#define THIS_MODULE VLM_dpctl
#define DEFAULT_IDLE_TIMEOUT 60
#define MAX_ADD_ACTS 5
#define MOD_PORT_CMD_UP "up"
#define MOD_PORT_CMD_DOWN "down"
#define MOD_PORT_CMD_FLOOD "flood"
#define MOD_PORT_CMD_NOFLOOD "noflood"
struct command {
const char *name;
int min_args;
int max_args;
void (*handler)(int argc, char *argv[]);
};
static struct command all_commands[];
static void usage(void) NO_RETURN;
static void parse_options(int argc, char *argv[]);
int main(int argc, char *argv[])
{
struct command *p;
set_program_name(argv[0]);
time_init();
vlog_init();
parse_options(argc, argv);
signal(SIGPIPE, SIG_IGN);
argc -= optind;
argv += optind;
if (argc < 1)
fatal(0, "missing command name; use --help for help");
for (p = all_commands; p->name != NULL; p++) {
if (!strcmp(p->name, argv[0])) {
int n_arg = argc - 1;
if (n_arg < p->min_args)
fatal(0, "'%s' command requires at least %d arguments",
p->name, p->min_args);
else if (n_arg > p->max_args)
fatal(0, "'%s' command takes at most %d arguments",
p->name, p->max_args);
else {
p->handler(argc, argv);
exit(0);
}
}
}
fatal(0, "unknown command '%s'; use --help for help", argv[0]);
return 0;
}
static void
parse_options(int argc, char *argv[])
{
static struct option long_options[] = {
{"timeout", required_argument, 0, 't'},
{"verbose", optional_argument, 0, 'v'},
{"help", no_argument, 0, 'h'},
{"version", no_argument, 0, 'V'},
VCONN_SSL_LONG_OPTIONS
{0, 0, 0, 0},
};
char *short_options = long_options_to_short_options(long_options);
for (;;) {
unsigned long int timeout;
int c;
c = getopt_long(argc, argv, short_options, long_options, NULL);
if (c == -1) {
break;
}
switch (c) {
case 't':
timeout = strtoul(optarg, NULL, 10);
if (timeout <= 0) {
fatal(0, "value %s on -t or --timeout is not at least 1",
optarg);
} else {
time_alarm(timeout);
}
break;
case 'h':
usage();
case 'V':
printf("%s "VERSION" compiled "__DATE__" "__TIME__"\n", argv[0]);
exit(EXIT_SUCCESS);
case 'v':
vlog_set_verbosity(optarg);
break;
VCONN_SSL_OPTION_HANDLERS
case '?':
exit(EXIT_FAILURE);
default:
abort();
}
}
free(short_options);
}
static void
usage(void)
{
printf("%s: OpenFlow switch management utility\n"
"usage: %s [OPTIONS] COMMAND [ARG...]\n"
#ifdef HAVE_NETLINK
"\nFor local datapaths only:\n"
" adddp nl:DP_ID add a new local datapath DP_ID\n"
" deldp nl:DP_ID delete local datapath DP_ID\n"
" addif nl:DP_ID IFACE... add each IFACE as a port on DP_ID\n"
" delif nl:DP_ID IFACE... delete each IFACE from DP_ID\n"
#endif
"\nFor local datapaths and remote switches:\n"
" show SWITCH show basic information\n"
" status SWITCH [KEY] report statistics (about KEY)\n"
" dump-desc SWITCH print switch description\n"
" dump-tables SWITCH print table stats\n"
" mod-port SWITCH IFACE ACT modify port behavior\n"
" dump-ports SWITCH print port statistics\n"
" dump-flows SWITCH print all flow entries\n"
" dump-flows SWITCH FLOW print matching FLOWs\n"
" dump-aggregate SWITCH print aggregate flow statistics\n"
" dump-aggregate SWITCH FLOW print aggregate stats for FLOWs\n"
" add-flow SWITCH FLOW add flow described by FLOW\n"
" add-flows SWITCH FILE add flows from FILE\n"
" del-flows SWITCH FLOW delete matching FLOWs\n"
" monitor SWITCH print packets received from SWITCH\n"
"\nFor local datapaths, remote switches, and controllers:\n"
" probe VCONN probe whether VCONN is up\n"
" ping VCONN [N] latency of N-byte echos\n"
" benchmark VCONN N COUNT bandwidth of COUNT N-byte echos\n"
"where each SWITCH is an active OpenFlow connection method.\n",
program_name, program_name);
vconn_usage(true, false);
printf("\nOptions:\n"
" -t, --timeout=SECS give up after SECS seconds\n"
" -v, --verbose=MODULE[:FACILITY[:LEVEL]] set logging levels\n"
" -v, --verbose set maximum verbosity level\n"
" -h, --help display this help message\n"
" -V, --version display version information\n");
exit(EXIT_SUCCESS);
}
static void run(int retval, const char *message, ...)
PRINTF_FORMAT(2, 3);
static void run(int retval, const char *message, ...)
{
if (retval) {
va_list args;
fprintf(stderr, "%s: ", program_name);
va_start(args, message);
vfprintf(stderr, message, args);
va_end(args);
if (retval == EOF) {
fputs(": unexpected end of file\n", stderr);
} else {
fprintf(stderr, ": %s\n", strerror(retval));
}
exit(EXIT_FAILURE);
}
}
#ifdef HAVE_NETLINK
/* Netlink-only commands. */
static int if_up(const char *netdev_name)
{
struct netdev *netdev;
int retval;
retval = netdev_open(netdev_name, NETDEV_ETH_TYPE_NONE, &netdev);
if (!retval) {
retval = netdev_turn_flags_on(netdev, NETDEV_UP, true);
netdev_close(netdev);
}
return retval;
}
static void open_nl_vconn(const char *name, bool subscribe, struct dpif *dpif)
{
if (strncmp(name, "nl:", 3)
|| strlen(name) < 4
|| name[strspn(name + 3, "0123456789") + 3]) {
fatal(0, "%s: argument is not of the form \"nl:DP_ID\"", name);
}
run(dpif_open(atoi(name + 3), subscribe, dpif), "opening datapath");
}
static void do_add_dp(int argc UNUSED, char *argv[])
{
struct dpif dp;
open_nl_vconn(argv[1], false, &dp);
run(dpif_add_dp(&dp), "add_dp");
dpif_close(&dp);
}
static void do_del_dp(int argc UNUSED, char *argv[])
{
struct dpif dp;
open_nl_vconn(argv[1], false, &dp);
run(dpif_del_dp(&dp), "del_dp");
dpif_close(&dp);
}
static void add_del_ports(int argc UNUSED, char *argv[],
int (*function)(struct dpif *, const char *netdev),
const char *operation, const char *preposition)
{
struct dpif dp;
bool failure = false;
int i;
open_nl_vconn(argv[1], false, &dp);
for (i = 2; i < argc; i++) {
int retval = function(&dp, argv[i]);
if (retval) {
error(retval, "failed to %s %s %s %s",
operation, argv[i], preposition, argv[1]);
failure = true;
}
}
dpif_close(&dp);
if (failure) {
exit(EXIT_FAILURE);
}
}
static int ifup_and_add_port(struct dpif *dpif, const char *netdev)
{
int retval = if_up(netdev);
return retval ? retval : dpif_add_port(dpif, netdev);
}
static void do_add_port(int argc UNUSED, char *argv[])
{
add_del_ports(argc, argv, ifup_and_add_port, "add", "to");
}
static void do_del_port(int argc UNUSED, char *argv[])
{
add_del_ports(argc, argv, dpif_del_port, "remove", "from");
}
#endif /* HAVE_NETLINK */
/* Generic commands. */
static void *
alloc_stats_request(size_t body_len, uint16_t type, struct buffer **bufferp)
{
struct ofp_stats_request *rq;
rq = make_openflow((offsetof(struct ofp_stats_request, body)
+ body_len), OFPT_STATS_REQUEST, bufferp);
rq->type = htons(type);
rq->flags = htons(0);
return rq->body;
}
static void
send_openflow_buffer(struct vconn *vconn, struct buffer *buffer)
{
update_openflow_length(buffer);
run(vconn_send_block(vconn, buffer), "failed to send packet to switch");
}
static void
dump_transaction(const char *vconn_name, struct buffer *request)
{
struct vconn *vconn;
struct buffer *reply;
update_openflow_length(request);
run(vconn_open_block(vconn_name, &vconn), "connecting to %s", vconn_name);
run(vconn_transact(vconn, request, &reply), "talking to %s", vconn_name);
ofp_print(stdout, reply->data, reply->size, 1);
vconn_close(vconn);
}
static void
dump_trivial_transaction(const char *vconn_name, uint8_t request_type)
{
struct buffer *request;
make_openflow(sizeof(struct ofp_header), request_type, &request);
dump_transaction(vconn_name, request);
}
static void
dump_stats_transaction(const char *vconn_name, struct buffer *request)
{
uint32_t send_xid = ((struct ofp_header *) request->data)->xid;
struct vconn *vconn;
bool done = false;
run(vconn_open_block(vconn_name, &vconn), "connecting to %s", vconn_name);
send_openflow_buffer(vconn, request);
while (!done) {
uint32_t recv_xid;
struct buffer *reply;
run(vconn_recv_block(vconn, &reply), "OpenFlow packet receive failed");
recv_xid = ((struct ofp_header *) reply->data)->xid;
if (send_xid == recv_xid) {
struct ofp_stats_reply *osr;
ofp_print(stdout, reply->data, reply->size, 1);
osr = buffer_at(reply, 0, sizeof *osr);
done = !osr || !(ntohs(osr->flags) & OFPSF_REPLY_MORE);
} else {
VLOG_DBG("received reply with xid %08"PRIx32" "
"!= expected %08"PRIx32, recv_xid, send_xid);
}
buffer_delete(reply);
}
vconn_close(vconn);
}
static void
dump_trivial_stats_transaction(const char *vconn_name, uint8_t stats_type)
{
struct buffer *request;
alloc_stats_request(0, stats_type, &request);
dump_stats_transaction(vconn_name, request);
}
static void
do_show(int argc UNUSED, char *argv[])
{
dump_trivial_transaction(argv[1], OFPT_FEATURES_REQUEST);
dump_trivial_transaction(argv[1], OFPT_GET_CONFIG_REQUEST);
}
static void
do_status(int argc, char *argv[])
{
struct nicira_header *request, *reply;
struct vconn *vconn;
struct buffer *b;
request = make_openflow(sizeof *request, OFPT_VENDOR, &b);
request->vendor_id = htonl(NX_VENDOR_ID);
request->subtype = htonl(NXT_STATUS_REQUEST);
if (argc > 2) {
buffer_put(b, argv[2], strlen(argv[2]));
}
run(vconn_open_block(argv[1], &vconn), "connecting to %s", argv[1]);
run(vconn_transact(vconn, b, &b), "talking to %s", argv[1]);
vconn_close(vconn);
if (b->size < sizeof *reply) {
fatal(0, "short reply (%zu bytes)", b->size);
}
reply = b->data;
if (reply->header.type != OFPT_VENDOR
|| reply->vendor_id != ntohl(NX_VENDOR_ID)
|| reply->subtype != ntohl(NXT_STATUS_REPLY)) {
ofp_print(stderr, b->data, b->size, 2);
fatal(0, "bad reply");
}
fwrite(reply + 1, b->size, 1, stdout);
}
static void
do_dump_desc(int argc, char *argv[])
{
dump_trivial_stats_transaction(argv[1], OFPST_DESC);
}
static void
do_dump_tables(int argc, char *argv[])
{
dump_trivial_stats_transaction(argv[1], OFPST_TABLE);
}
static uint32_t
str_to_int(const char *str)
{
char *tail;
uint32_t value;
errno = 0;
value = strtoul(str, &tail, 0);
if (errno == EINVAL || errno == ERANGE || *tail) {
fatal(0, "invalid numeric format %s", str);
}
return value;
}
static void
str_to_mac(const char *str, uint8_t mac[6])
{
if (sscanf(str, "%"SCNx8":%"SCNx8":%"SCNx8":%"SCNx8":%"SCNx8":%"SCNx8,
&mac[0], &mac[1], &mac[2], &mac[3], &mac[4], &mac[5]) != 6) {
fatal(0, "invalid mac address %s", str);
}
}
static uint32_t
str_to_ip(const char *str_, uint32_t *ip)
{
char *str = xstrdup(str_);
char *save_ptr = NULL;
const char *name, *netmask;
struct in_addr in_addr;
int n_wild, retval;
name = strtok_r(str, "//", &save_ptr);
retval = name ? lookup_ip(name, &in_addr) : EINVAL;
if (retval) {
fatal(0, "%s: could not convert to IP address", str);
}
*ip = in_addr.s_addr;
netmask = strtok_r(NULL, "//", &save_ptr);
if (netmask) {
uint8_t o[4];
if (sscanf(netmask, "%"SCNu8".%"SCNu8".%"SCNu8".%"SCNu8,
&o[0], &o[1], &o[2], &o[3]) == 4) {
uint32_t nm = (o[0] << 24) | (o[1] << 16) | (o[2] << 8) | o[3];
int i;
/* Find first 1-bit. */
for (i = 0; i < 32; i++) {
if (nm & (1u << i)) {
break;
}
}
n_wild = i;
/* Verify that the rest of the bits are 1-bits. */
for (; i < 32; i++) {
if (!(nm & (1u << i))) {
fatal(0, "%s: %s is not a valid netmask", str, netmask);
}
}
} else {
int prefix = atoi(netmask);
if (prefix <= 0 || prefix > 32) {
fatal(0, "%s: network prefix bits not between 1 and 32", str);
}
n_wild = 32 - prefix;
}
} else {
n_wild = 0;
}
free(str);
return n_wild;
}
static void
str_to_action(char *str, struct ofp_action *action, int *n_actions)
{
uint16_t port;
int i;
int max_actions = *n_actions;
char *act, *arg;
char *saveptr = NULL;
memset(action, 0, sizeof(*action) * max_actions);
for (i=0, act = strtok_r(str, ", \t\r\n", &saveptr);
i<max_actions && act;
i++, act = strtok_r(NULL, ", \t\r\n", &saveptr))
{
port = OFPP_MAX;
/* Arguments are separated by colons */
arg = strchr(act, ':');
if (arg) {
*arg = '\0';
arg++;
}
if (!strcasecmp(act, "mod_vlan")) {
action[i].type = htons(OFPAT_SET_DL_VLAN);
if (!strcasecmp(arg, "strip")) {
action[i].arg.vlan_id = htons(OFP_VLAN_NONE);
} else {
action[i].arg.vlan_id = htons(str_to_int(arg));
}
} else if (!strcasecmp(act, "output")) {
port = str_to_int(arg);
} else if (!strcasecmp(act, "TABLE")) {
port = OFPP_TABLE;
} else if (!strcasecmp(act, "NORMAL")) {
port = OFPP_NORMAL;
} else if (!strcasecmp(act, "FLOOD")) {
port = OFPP_FLOOD;
} else if (!strcasecmp(act, "ALL")) {
port = OFPP_ALL;
} else if (!strcasecmp(act, "CONTROLLER")) {
port = OFPP_CONTROLLER;
if (arg) {
if (!strcasecmp(arg, "all")) {
action[i].arg.output.max_len= htons(0);
} else {
action[i].arg.output.max_len= htons(str_to_int(arg));
}
}
} else if (!strcasecmp(act, "LOCAL")) {
port = OFPP_LOCAL;
} else if (strspn(act, "0123456789") == strlen(act)) {
port = str_to_int(act);
} else {
fatal(0, "Unknown action: %s", act);
}
if (port != OFPP_MAX) {
action[i].type = htons(OFPAT_OUTPUT);
action[i].arg.output.port = htons(port);
}
}
*n_actions = i;
}
struct protocol {
const char *name;
uint16_t dl_type;
uint8_t nw_proto;
};
static bool
parse_protocol(const char *name, const struct protocol **p_out)
{
static const struct protocol protocols[] = {
{ "ip", ETH_TYPE_IP },
{ "arp", ETH_TYPE_ARP },
{ "icmp", ETH_TYPE_IP, IP_TYPE_ICMP },
{ "tcp", ETH_TYPE_IP, IP_TYPE_TCP },
{ "udp", ETH_TYPE_IP, IP_TYPE_UDP },
};
const struct protocol *p;
for (p = protocols; p < &protocols[ARRAY_SIZE(protocols)]; p++) {
if (!strcmp(p->name, name)) {
*p_out = p;
return true;
}
}
*p_out = NULL;
return false;
}
struct field {
const char *name;
uint32_t wildcard;
enum { F_U8, F_U16, F_MAC, F_IP } type;
size_t offset, shift;
};
static bool
parse_field(const char *name, const struct field **f_out)
{
#define F_OFS(MEMBER) offsetof(struct ofp_match, MEMBER)
static const struct field fields[] = {
{ "in_port", OFPFW_IN_PORT, F_U16, F_OFS(in_port) },
{ "dl_vlan", OFPFW_DL_VLAN, F_U16, F_OFS(dl_vlan) },
{ "dl_src", OFPFW_DL_SRC, F_MAC, F_OFS(dl_src) },
{ "dl_dst", OFPFW_DL_DST, F_MAC, F_OFS(dl_dst) },
{ "dl_type", OFPFW_DL_TYPE, F_U16, F_OFS(dl_type) },
{ "nw_src", OFPFW_NW_SRC_MASK, F_IP,
F_OFS(nw_src), OFPFW_NW_SRC_SHIFT },
{ "nw_dst", OFPFW_NW_DST_MASK, F_IP,
F_OFS(nw_dst), OFPFW_NW_DST_SHIFT },
{ "nw_proto", OFPFW_NW_PROTO, F_U8, F_OFS(nw_proto) },
{ "tp_src", OFPFW_TP_SRC, F_U16, F_OFS(tp_src) },
{ "tp_dst", OFPFW_TP_DST, F_U16, F_OFS(tp_dst) },
};
const struct field *f;
for (f = fields; f < &fields[ARRAY_SIZE(fields)]; f++) {
if (!strcmp(f->name, name)) {
*f_out = f;
return true;
}
}
*f_out = NULL;
return false;
}
static void
str_to_flow(char *string, struct ofp_match *match,
struct ofp_action *action, int *n_actions, uint8_t *table_idx,
uint16_t *priority, uint16_t *idle_timeout, uint16_t *hard_timeout)
{
char *name;
uint32_t wildcards;
if (table_idx) {
*table_idx = 0xff;
}
if (priority) {
*priority = OFP_DEFAULT_PRIORITY;
}
if (idle_timeout) {
*idle_timeout = DEFAULT_IDLE_TIMEOUT;
}
if (hard_timeout) {
*hard_timeout = OFP_FLOW_PERMANENT;
}
if (action) {
char *act_str = strstr(string, "action");
if (!act_str) {
fatal(0, "must specify an action");
}
*(act_str-1) = '\0';
act_str = strchr(act_str, '=');
if (!act_str) {
fatal(0, "must specify an action");
}
act_str++;
str_to_action(act_str, action, n_actions);
}
memset(match, 0, sizeof *match);
wildcards = OFPFW_ALL;
for (name = strtok(string, "=, \t\r\n"); name;
name = strtok(NULL, "=, \t\r\n")) {
const struct protocol *p;
if (parse_protocol(name, &p)) {
wildcards &= ~OFPFW_DL_TYPE;
match->dl_type = htons(p->dl_type);
if (p->nw_proto) {
wildcards &= ~OFPFW_NW_PROTO;
match->nw_proto = p->nw_proto;
}
} else {
const struct field *f;
char *value;
value = strtok(NULL, ", \t\r\n");
if (!value) {
fatal(0, "field %s missing value", name);
}
if (table_idx && !strcmp(name, "table")) {
*table_idx = atoi(value);
} else if (priority && !strcmp(name, "priority")) {
*priority = atoi(value);
} else if (idle_timeout && !strcmp(name, "idle_timeout")) {
*idle_timeout = atoi(value);
} else if (hard_timeout && !strcmp(name, "hard_timeout")) {
*hard_timeout = atoi(value);
} else if (parse_field(name, &f)) {
void *data = (char *) match + f->offset;
if (!strcmp(value, "*") || !strcmp(value, "ANY")) {
wildcards |= f->wildcard;
} else {
wildcards &= ~f->wildcard;
if (f->type == F_U8) {
*(uint8_t *) data = str_to_int(value);
} else if (f->type == F_U16) {
*(uint16_t *) data = htons(str_to_int(value));
} else if (f->type == F_MAC) {
str_to_mac(value, data);
} else if (f->type == F_IP) {
wildcards |= str_to_ip(value, data) << f->shift;
} else {
NOT_REACHED();
}
}
} else {
fatal(0, "unknown keyword %s", name);
}
}
}
match->wildcards = htonl(wildcards);
}
static void do_dump_flows(int argc, char *argv[])
{
struct ofp_flow_stats_request *req;
struct buffer *request;
req = alloc_stats_request(sizeof *req, OFPST_FLOW, &request);
str_to_flow(argc > 2 ? argv[2] : "", &req->match, NULL, 0,
&req->table_id, NULL, NULL, NULL);
memset(req->pad, 0, sizeof req->pad);
dump_stats_transaction(argv[1], request);
}
static void do_dump_aggregate(int argc, char *argv[])
{
struct ofp_aggregate_stats_request *req;
struct buffer *request;
req = alloc_stats_request(sizeof *req, OFPST_AGGREGATE, &request);
str_to_flow(argc > 2 ? argv[2] : "", &req->match, NULL, 0,
&req->table_id, NULL, NULL, NULL);
memset(req->pad, 0, sizeof req->pad);
dump_stats_transaction(argv[1], request);
}
static void do_add_flow(int argc, char *argv[])
{
struct vconn *vconn;
struct buffer *buffer;
struct ofp_flow_mod *ofm;
uint16_t priority, idle_timeout, hard_timeout;
size_t size;
int n_actions = MAX_ADD_ACTS;
run(vconn_open_block(argv[1], &vconn), "connecting to %s", argv[1]);
/* Parse and send. */
size = sizeof *ofm + (sizeof ofm->actions[0] * MAX_ADD_ACTS);
ofm = make_openflow(size, OFPT_FLOW_MOD, &buffer);
str_to_flow(argv[2], &ofm->match, &ofm->actions[0], &n_actions,
NULL, &priority, &idle_timeout, &hard_timeout);
ofm->command = htons(OFPFC_ADD);
ofm->idle_timeout = htons(idle_timeout);
ofm->hard_timeout = htons(hard_timeout);
ofm->buffer_id = htonl(UINT32_MAX);
ofm->priority = htons(priority);
ofm->reserved = htonl(0);
/* xxx Should we use the buffer library? */
buffer->size -= (MAX_ADD_ACTS - n_actions) * sizeof ofm->actions[0];
send_openflow_buffer(vconn, buffer);
vconn_close(vconn);
}
static void do_add_flows(int argc, char *argv[])
{
struct vconn *vconn;
FILE *file;
char line[1024];
file = fopen(argv[2], "r");
if (file == NULL) {
fatal(errno, "%s: open", argv[2]);
}
run(vconn_open_block(argv[1], &vconn), "connecting to %s", argv[1]);
while (fgets(line, sizeof line, file)) {
struct buffer *buffer;
struct ofp_flow_mod *ofm;
uint16_t priority, idle_timeout, hard_timeout;
size_t size;
int n_actions = MAX_ADD_ACTS;
char *comment;
/* Delete comments. */
comment = strchr(line, '#');
if (comment) {
*comment = '\0';
}
/* Drop empty lines. */
if (line[strspn(line, " \t\n")] == '\0') {
continue;
}
/* Parse and send. */
size = sizeof *ofm + (sizeof ofm->actions[0] * MAX_ADD_ACTS);
ofm = make_openflow(size, OFPT_FLOW_MOD, &buffer);
str_to_flow(line, &ofm->match, &ofm->actions[0], &n_actions,
NULL, &priority, &idle_timeout, &hard_timeout);
ofm->command = htons(OFPFC_ADD);
ofm->idle_timeout = htons(idle_timeout);
ofm->hard_timeout = htons(hard_timeout);
ofm->buffer_id = htonl(UINT32_MAX);
ofm->priority = htons(priority);
ofm->reserved = htonl(0);
/* xxx Should we use the buffer library? */
buffer->size -= (MAX_ADD_ACTS - n_actions) * sizeof ofm->actions[0];
send_openflow_buffer(vconn, buffer);
}
vconn_close(vconn);
fclose(file);
}
static void do_del_flows(int argc, char *argv[])
{
struct vconn *vconn;
uint16_t priority;
run(vconn_open_block(argv[1], &vconn), "connecting to %s", argv[1]);
struct buffer *buffer;
struct ofp_flow_mod *ofm;
size_t size;
/* Parse and send. */
size = sizeof *ofm;
ofm = make_openflow(size, OFPT_FLOW_MOD, &buffer);
str_to_flow(argc > 2 ? argv[2] : "", &ofm->match, NULL, 0, NULL,
&priority, NULL, NULL);
ofm->command = htons(OFPFC_DELETE);
ofm->idle_timeout = htons(0);
ofm->hard_timeout = htons(0);
ofm->buffer_id = htonl(UINT32_MAX);
ofm->priority = htons(priority);
ofm->reserved = htonl(0);
send_openflow_buffer(vconn, buffer);
vconn_close(vconn);
}
static void
do_monitor(int argc UNUSED, char *argv[])
{
struct vconn *vconn;
const char *name;
/* If the user specified, e.g., "nl:0", append ":1" to it to ensure that
* the connection will subscribe to listen for asynchronous messages, such
* as packet-in messages. */
if (!strncmp(argv[1], "nl:", 3) && strrchr(argv[1], ':') == &argv[1][2]) {
name = xasprintf("%s:1", argv[1]);
} else {
name = argv[1];
}
run(vconn_open_block(argv[1], &vconn), "connecting to %s", name);
for (;;) {
struct buffer *b;
run(vconn_recv_block(vconn, &b), "vconn_recv");
ofp_print(stderr, b->data, b->size, 2);
buffer_delete(b);
}
}
static void
do_dump_ports(int argc, char *argv[])
{
dump_trivial_stats_transaction(argv[1], OFPST_PORT);
}
static void
do_probe(int argc, char *argv[])
{
struct buffer *request;
struct vconn *vconn;
struct buffer *reply;
make_openflow(sizeof(struct ofp_header), OFPT_ECHO_REQUEST, &request);
run(vconn_open_block(argv[1], &vconn), "connecting to %s", argv[1]);
run(vconn_transact(vconn, request, &reply), "talking to %s", argv[1]);
if (reply->size != request->size) {
fatal(0, "reply does not match request");
}
buffer_delete(reply);
vconn_close(vconn);
}
static void
do_mod_port(int argc, char *argv[])
{
struct buffer *request, *reply;
struct ofp_switch_features *osf;
struct ofp_port_mod *opm;
struct vconn *vconn;
char *endptr;
int n_ports;
int port_idx;
int port_no;
/* Check if the argument is a port index. Otherwise, treat it as
* the port name. */
port_no = strtol(argv[2], &endptr, 10);
if (port_no == 0 && endptr == argv[2]) {
port_no = -1;
}
/* Send a "Features Request" to get the information we need in order
* to modify the port. */
make_openflow(sizeof(struct ofp_header), OFPT_FEATURES_REQUEST, &request);
run(vconn_open_block(argv[1], &vconn), "connecting to %s", argv[1]);
run(vconn_transact(vconn, request, &reply), "talking to %s", argv[1]);
osf = reply->data;
n_ports = (reply->size - sizeof *osf) / sizeof *osf->ports;
for (port_idx = 0; port_idx < n_ports; port_idx++) {
if (port_no != -1) {
/* Check argument as a port index */
if (osf->ports[port_idx].port_no == htons(port_no)) {
break;
}
} else {
/* Check argument as an interface name */
if (!strncmp((char *)osf->ports[port_idx].name, argv[2],
sizeof osf->ports[0].name)) {
break;
}
}
}
if (port_idx == n_ports) {
fatal(0, "couldn't find monitored port: %s", argv[2]);
}
opm = make_openflow(sizeof(struct ofp_port_mod), OFPT_PORT_MOD, &request);
memcpy(&opm->desc, &osf->ports[port_idx], sizeof osf->ports[0]);
opm->mask = 0;
opm->desc.flags = 0;
printf("modifying port: %s\n", osf->ports[port_idx].name);
if (!strncasecmp(argv[3], MOD_PORT_CMD_UP, sizeof MOD_PORT_CMD_UP)) {
opm->mask |= htonl(OFPPFL_PORT_DOWN);
} else if (!strncasecmp(argv[3], MOD_PORT_CMD_DOWN,
sizeof MOD_PORT_CMD_DOWN)) {
opm->mask |= htonl(OFPPFL_PORT_DOWN);
opm->desc.flags |= htonl(OFPPFL_PORT_DOWN);
} else if (!strncasecmp(argv[3], MOD_PORT_CMD_FLOOD,
sizeof MOD_PORT_CMD_FLOOD)) {
opm->mask |= htonl(OFPPFL_NO_FLOOD);
} else if (!strncasecmp(argv[3], MOD_PORT_CMD_NOFLOOD,
sizeof MOD_PORT_CMD_NOFLOOD)) {
opm->mask |= htonl(OFPPFL_NO_FLOOD);
opm->desc.flags |= htonl(OFPPFL_NO_FLOOD);
} else {
fatal(0, "unknown mod-port command '%s'", argv[3]);
}
send_openflow_buffer(vconn, request);
buffer_delete(reply);
vconn_close(vconn);
}
static void
do_ping(int argc, char *argv[])
{
size_t max_payload = 65535 - sizeof(struct ofp_header);
unsigned int payload;
struct vconn *vconn;
int i;
payload = argc > 2 ? atoi(argv[2]) : 64;
if (payload > max_payload) {
fatal(0, "payload must be between 0 and %zu bytes", max_payload);
}
run(vconn_open_block(argv[1], &vconn), "connecting to %s", argv[1]);
for (i = 0; i < 10; i++) {
struct timeval start, end;
struct buffer *request, *reply;
struct ofp_header *rq_hdr, *rpy_hdr;
rq_hdr = make_openflow(sizeof(struct ofp_header) + payload,
OFPT_ECHO_REQUEST, &request);
random_bytes(rq_hdr + 1, payload);
gettimeofday(&start, NULL);
run(vconn_transact(vconn, buffer_clone(request), &reply), "transact");
gettimeofday(&end, NULL);
rpy_hdr = reply->data;
if (reply->size != request->size
|| memcmp(rpy_hdr + 1, rq_hdr + 1, payload)
|| rpy_hdr->xid != rq_hdr->xid
|| rpy_hdr->type != OFPT_ECHO_REPLY) {
printf("Reply does not match request. Request:\n");
ofp_print(stdout, request, request->size, 2);
printf("Reply:\n");
ofp_print(stdout, reply, reply->size, 2);
}
printf("%d bytes from %s: xid=%08"PRIx32" time=%.1f ms\n",
reply->size - sizeof *rpy_hdr, argv[1], rpy_hdr->xid,
(1000*(double)(end.tv_sec - start.tv_sec))
+ (.001*(end.tv_usec - start.tv_usec)));
buffer_delete(request);
buffer_delete(reply);
}
vconn_close(vconn);
}
static void
do_benchmark(int argc, char *argv[])
{
size_t max_payload = 65535 - sizeof(struct ofp_header);
struct timeval start, end;
unsigned int payload_size, message_size;
struct vconn *vconn;
double duration;
int count;
int i;
payload_size = atoi(argv[2]);
if (payload_size > max_payload) {
fatal(0, "payload must be between 0 and %zu bytes", max_payload);
}
message_size = sizeof(struct ofp_header) + payload_size;
count = atoi(argv[3]);
printf("Sending %d packets * %u bytes (with header) = %u bytes total\n",
count, message_size, count * message_size);
run(vconn_open_block(argv[1], &vconn), "connecting to %s", argv[1]);
gettimeofday(&start, NULL);
for (i = 0; i < count; i++) {
struct buffer *request, *reply;
struct ofp_header *rq_hdr;
rq_hdr = make_openflow(message_size, OFPT_ECHO_REQUEST, &request);
memset(rq_hdr + 1, 0, payload_size);
run(vconn_transact(vconn, request, &reply), "transact");
buffer_delete(reply);
}
gettimeofday(&end, NULL);
vconn_close(vconn);
duration = ((1000*(double)(end.tv_sec - start.tv_sec))
+ (.001*(end.tv_usec - start.tv_usec)));
printf("Finished in %.1f ms (%.0f packets/s) (%.0f bytes/s)\n",
duration, count / (duration / 1000.0),
count * message_size / (duration / 1000.0));
}
static void do_help(int argc UNUSED, char *argv[] UNUSED)
{
usage();
}
static struct command all_commands[] = {
#ifdef HAVE_NETLINK
{ "adddp", 1, 1, do_add_dp },
{ "deldp", 1, 1, do_del_dp },
{ "addif", 2, INT_MAX, do_add_port },
{ "delif", 2, INT_MAX, do_del_port },
#endif
{ "show", 1, 1, do_show },
{ "status", 1, 2, do_status },
{ "help", 0, INT_MAX, do_help },
{ "monitor", 1, 1, do_monitor },
{ "dump-desc", 1, 1, do_dump_desc },
{ "dump-tables", 1, 1, do_dump_tables },
{ "dump-flows", 1, 2, do_dump_flows },
{ "dump-aggregate", 1, 2, do_dump_aggregate },
{ "add-flow", 2, 2, do_add_flow },
{ "add-flows", 2, 2, do_add_flows },
{ "del-flows", 1, 2, do_del_flows },
{ "dump-ports", 1, 1, do_dump_ports },
{ "mod-port", 3, 3, do_mod_port },
{ "probe", 1, 1, do_probe },
{ "ping", 1, 2, do_ping },
{ "benchmark", 3, 3, do_benchmark },
{ NULL, 0, 0, NULL },
};
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