/
ofp-port.c
1981 lines (1710 loc) · 66 KB
/
ofp-port.c
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/*
* Copyright (c) 2008-2017 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 "openvswitch/ofp-port.h"
#include <ctype.h>
#include "byte-order.h"
#include "flow.h"
#include "openflow/intel-ext.h"
#include "openvswitch/json.h"
#include "openvswitch/ofp-errors.h"
#include "openvswitch/ofp-msgs.h"
#include "openvswitch/ofp-print.h"
#include "openvswitch/ofp-prop.h"
#include "openvswitch/ofpbuf.h"
#include "openvswitch/vlog.h"
VLOG_DEFINE_THIS_MODULE(ofp_port);
static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
/* ofputil_port_map. */
void
ofputil_port_map_init(struct ofputil_port_map *map)
{
namemap_init(&map->map);
}
void
ofputil_port_map_put(struct ofputil_port_map *map,
ofp_port_t ofp_port, const char *name)
{
namemap_put(&map->map, ofp_to_u16(ofp_port), name);
}
const char *
ofputil_port_map_get_name(const struct ofputil_port_map *map,
ofp_port_t ofp_port)
{
struct namemap_node *node
= (map
? namemap_find_by_number(&map->map, ofp_to_u16(ofp_port))
: NULL);
return node && !node->duplicate ? node->name : NULL;
}
ofp_port_t
ofputil_port_map_get_number(const struct ofputil_port_map *map,
const char *name)
{
struct namemap_node *node
= map ? namemap_find_by_name(&map->map, name) : NULL;
return node && !node->duplicate ? u16_to_ofp(node->number) : OFPP_NONE;
}
void
ofputil_port_map_destroy(struct ofputil_port_map *map)
{
namemap_destroy(&map->map);
}
/* Converts the OpenFlow 1.1+ port number 'ofp11_port' into an OpenFlow 1.0
* port number and stores the latter in '*ofp10_port', for the purpose of
* decoding OpenFlow 1.1+ protocol messages. Returns 0 if successful,
* otherwise an OFPERR_* number. On error, stores OFPP_NONE in '*ofp10_port'.
*
* See the definition of OFP11_MAX for an explanation of the mapping. */
enum ofperr
ofputil_port_from_ofp11(ovs_be32 ofp11_port, ofp_port_t *ofp10_port)
{
uint32_t ofp11_port_h = ntohl(ofp11_port);
if (ofp11_port_h < ofp_to_u16(OFPP_MAX)) {
*ofp10_port = u16_to_ofp(ofp11_port_h);
return 0;
} else if (ofp11_port_h >= ofp11_to_u32(OFPP11_MAX)) {
*ofp10_port = u16_to_ofp(ofp11_port_h - OFPP11_OFFSET);
return 0;
} else {
*ofp10_port = OFPP_NONE;
static struct vlog_rate_limit rll = VLOG_RATE_LIMIT_INIT(1, 5);
VLOG_WARN_RL(&rll, "port %"PRIu32" is outside the supported "
"range 0 through %d or 0x%"PRIx32" through 0x%"PRIx32,
ofp11_port_h, ofp_to_u16(OFPP_MAX) - 1,
ofp11_to_u32(OFPP11_MAX), UINT32_MAX);
return OFPERR_OFPBAC_BAD_OUT_PORT;
}
}
/* Returns the OpenFlow 1.1+ port number equivalent to the OpenFlow 1.0 port
* number 'ofp10_port', for encoding OpenFlow 1.1+ protocol messages.
*
* See the definition of OFP11_MAX for an explanation of the mapping. */
ovs_be32
ofputil_port_to_ofp11(ofp_port_t ofp10_port)
{
return htonl(ofp_to_u16(ofp10_port) < ofp_to_u16(OFPP_MAX)
? ofp_to_u16(ofp10_port)
: ofp_to_u16(ofp10_port) + OFPP11_OFFSET);
}
#define OFPUTIL_NAMED_PORTS \
OFPUTIL_NAMED_PORT(IN_PORT) \
OFPUTIL_NAMED_PORT(TABLE) \
OFPUTIL_NAMED_PORT(NORMAL) \
OFPUTIL_NAMED_PORT(FLOOD) \
OFPUTIL_NAMED_PORT(ALL) \
OFPUTIL_NAMED_PORT(CONTROLLER) \
OFPUTIL_NAMED_PORT(LOCAL) \
OFPUTIL_NAMED_PORT(ANY) \
OFPUTIL_NAMED_PORT(UNSET)
/* For backwards compatibility, so that "none" is recognized as OFPP_ANY */
#define OFPUTIL_NAMED_PORTS_WITH_NONE \
OFPUTIL_NAMED_PORTS \
OFPUTIL_NAMED_PORT(NONE)
/* Stores the port number represented by 's' into '*portp'. 's' may be an
* integer or, for reserved ports, the standard OpenFlow name for the port
* (e.g. "LOCAL"). If 'port_map' is nonnull, also accepts names in it (quoted
* or unquoted).
*
* Returns true if successful, false if 's' is not a valid OpenFlow port number
* or name. The caller should issue an error message in this case, because
* this function usually does not. (This gives the caller an opportunity to
* look up the port name another way, e.g. by contacting the switch and listing
* the names of all its ports).
*
* This function accepts OpenFlow 1.0 port numbers. It also accepts a subset
* of OpenFlow 1.1+ port numbers, mapping those port numbers into the 16-bit
* range as described in include/openflow/openflow-1.1.h. */
bool
ofputil_port_from_string(const char *s,
const struct ofputil_port_map *port_map,
ofp_port_t *portp)
{
unsigned int port32; /* int is at least 32 bits wide. */
if (*s == '-') {
VLOG_WARN("Negative value %s is not a valid port number.", s);
return false;
}
*portp = 0;
if (str_to_uint(s, 10, &port32)) {
if (port32 < ofp_to_u16(OFPP_MAX)) {
/* Pass. */
} else if (port32 < ofp_to_u16(OFPP_FIRST_RESV)) {
VLOG_WARN("port %u is a reserved OF1.0 port number that will "
"be translated to %u when talking to an OF1.1 or "
"later controller", port32, port32 + OFPP11_OFFSET);
} else if (port32 <= ofp_to_u16(OFPP_LAST_RESV)) {
char name[OFP10_MAX_PORT_NAME_LEN];
ofputil_port_to_string(u16_to_ofp(port32), NULL,
name, sizeof name);
VLOG_WARN_ONCE("referring to port %s as %"PRIu32" is deprecated "
"for compatibility with OpenFlow 1.1 and later",
name, port32);
} else if (port32 < ofp11_to_u32(OFPP11_MAX)) {
VLOG_WARN("port %u is outside the supported range 0 through "
"%x or 0x%x through 0x%"PRIx32, port32,
UINT16_MAX, ofp11_to_u32(OFPP11_MAX), UINT32_MAX);
return false;
} else {
port32 -= OFPP11_OFFSET;
}
*portp = u16_to_ofp(port32);
return true;
} else {
struct pair {
const char *name;
ofp_port_t value;
};
static const struct pair pairs[] = {
#define OFPUTIL_NAMED_PORT(NAME) {#NAME, OFPP_##NAME},
OFPUTIL_NAMED_PORTS_WITH_NONE
#undef OFPUTIL_NAMED_PORT
};
const struct pair *p;
for (p = pairs; p < &pairs[ARRAY_SIZE(pairs)]; p++) {
if (!strcasecmp(s, p->name)) {
*portp = p->value;
return true;
}
}
ofp_port_t ofp_port = OFPP_NONE;
if (s[0] != '"') {
ofp_port = ofputil_port_map_get_number(port_map, s);
} else {
size_t length = strlen(s);
char *name = NULL;
if (length > 1
&& s[length - 1] == '"'
&& json_string_unescape(s + 1, length - 2, &name)) {
ofp_port = ofputil_port_map_get_number(port_map, name);
}
free(name);
}
if (ofp_port != OFPP_NONE) {
*portp = ofp_port;
return true;
}
return false;
}
}
const char *
ofputil_port_get_reserved_name(ofp_port_t port)
{
switch (port) {
#define OFPUTIL_NAMED_PORT(NAME) case OFPP_##NAME: return #NAME;
OFPUTIL_NAMED_PORTS
#undef OFPUTIL_NAMED_PORT
default:
return NULL;
}
}
/* Appends to 's' a string representation of the OpenFlow port number 'port'.
* Most ports' string representation is just the port number, but for special
* ports, e.g. OFPP_LOCAL, it is the name, e.g. "LOCAL". */
void
ofputil_format_port(ofp_port_t port, const struct ofputil_port_map *port_map,
struct ds *s)
{
const char *reserved_name = ofputil_port_get_reserved_name(port);
if (reserved_name) {
ds_put_cstr(s, reserved_name);
return;
}
const char *port_name = ofputil_port_map_get_name(port_map, port);
if (port_name) {
namemap_put_name(port_name, s);
return;
}
ds_put_format(s, "%"PRIu32, port);
}
/* Puts in the 'bufsize' byte in 'namebuf' a null-terminated string
* representation of OpenFlow port number 'port'. Most ports are represented
* as just the port number, but special ports, e.g. OFPP_LOCAL, are represented
* by name, e.g. "LOCAL". */
void
ofputil_port_to_string(ofp_port_t port,
const struct ofputil_port_map *port_map,
char *namebuf, size_t bufsize)
{
const char *reserved_name = ofputil_port_get_reserved_name(port);
if (reserved_name) {
ovs_strlcpy(namebuf, reserved_name, bufsize);
return;
}
const char *port_name = ofputil_port_map_get_name(port_map, port);
if (port_name) {
struct ds s = DS_EMPTY_INITIALIZER;
namemap_put_name(port_name, &s);
ovs_strlcpy(namebuf, ds_cstr(&s), bufsize);
ds_destroy(&s);
return;
}
snprintf(namebuf, bufsize, "%"PRIu32, port);
}
/* ofputil_port_config */
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;
}
void
ofputil_port_config_format(struct ds *s, enum ofputil_port_config config)
{
ofp_print_bit_names(s, config, ofputil_port_config_to_name, ' ');
ds_put_char(s, '\n');
}
/* ofputil_port_state */
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;
}
void
ofputil_port_state_format(struct ds *s, 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(s, (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(s, state, ofputil_port_state_to_name, ' ');
}
} else {
ofp_print_bit_names(s, state, ofputil_port_state_to_name, ' ');
}
ds_put_char(s, '\n');
}
/* ofputil_phy_port */
/* NETDEV_F_* to and from OFPPF_* and OFPPF10_*. */
BUILD_ASSERT_DECL((int) NETDEV_F_10MB_HD == OFPPF_10MB_HD); /* bit 0 */
BUILD_ASSERT_DECL((int) NETDEV_F_10MB_FD == OFPPF_10MB_FD); /* bit 1 */
BUILD_ASSERT_DECL((int) NETDEV_F_100MB_HD == OFPPF_100MB_HD); /* bit 2 */
BUILD_ASSERT_DECL((int) NETDEV_F_100MB_FD == OFPPF_100MB_FD); /* bit 3 */
BUILD_ASSERT_DECL((int) NETDEV_F_1GB_HD == OFPPF_1GB_HD); /* bit 4 */
BUILD_ASSERT_DECL((int) NETDEV_F_1GB_FD == OFPPF_1GB_FD); /* bit 5 */
BUILD_ASSERT_DECL((int) NETDEV_F_10GB_FD == OFPPF_10GB_FD); /* bit 6 */
/* NETDEV_F_ bits 11...15 are OFPPF10_ bits 7...11: */
BUILD_ASSERT_DECL((int) NETDEV_F_COPPER == (OFPPF10_COPPER << 4));
BUILD_ASSERT_DECL((int) NETDEV_F_FIBER == (OFPPF10_FIBER << 4));
BUILD_ASSERT_DECL((int) NETDEV_F_AUTONEG == (OFPPF10_AUTONEG << 4));
BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE == (OFPPF10_PAUSE << 4));
BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE_ASYM == (OFPPF10_PAUSE_ASYM << 4));
static enum netdev_features
netdev_port_features_from_ofp10(ovs_be32 ofp10_)
{
uint32_t ofp10 = ntohl(ofp10_);
return (ofp10 & 0x7f) | ((ofp10 & 0xf80) << 4);
}
static ovs_be32
netdev_port_features_to_ofp10(enum netdev_features features)
{
return htonl((features & 0x7f) | ((features & 0xf800) >> 4));
}
BUILD_ASSERT_DECL((int) NETDEV_F_10MB_HD == OFPPF_10MB_HD); /* bit 0 */
BUILD_ASSERT_DECL((int) NETDEV_F_10MB_FD == OFPPF_10MB_FD); /* bit 1 */
BUILD_ASSERT_DECL((int) NETDEV_F_100MB_HD == OFPPF_100MB_HD); /* bit 2 */
BUILD_ASSERT_DECL((int) NETDEV_F_100MB_FD == OFPPF_100MB_FD); /* bit 3 */
BUILD_ASSERT_DECL((int) NETDEV_F_1GB_HD == OFPPF_1GB_HD); /* bit 4 */
BUILD_ASSERT_DECL((int) NETDEV_F_1GB_FD == OFPPF_1GB_FD); /* bit 5 */
BUILD_ASSERT_DECL((int) NETDEV_F_10GB_FD == OFPPF_10GB_FD); /* bit 6 */
BUILD_ASSERT_DECL((int) NETDEV_F_40GB_FD == OFPPF11_40GB_FD); /* bit 7 */
BUILD_ASSERT_DECL((int) NETDEV_F_100GB_FD == OFPPF11_100GB_FD); /* bit 8 */
BUILD_ASSERT_DECL((int) NETDEV_F_1TB_FD == OFPPF11_1TB_FD); /* bit 9 */
BUILD_ASSERT_DECL((int) NETDEV_F_OTHER == OFPPF11_OTHER); /* bit 10 */
BUILD_ASSERT_DECL((int) NETDEV_F_COPPER == OFPPF11_COPPER); /* bit 11 */
BUILD_ASSERT_DECL((int) NETDEV_F_FIBER == OFPPF11_FIBER); /* bit 12 */
BUILD_ASSERT_DECL((int) NETDEV_F_AUTONEG == OFPPF11_AUTONEG); /* bit 13 */
BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE == OFPPF11_PAUSE); /* bit 14 */
BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE_ASYM == OFPPF11_PAUSE_ASYM);/* bit 15 */
static enum netdev_features
netdev_port_features_from_ofp11(ovs_be32 ofp11)
{
return ntohl(ofp11) & 0xffff;
}
static ovs_be32
netdev_port_features_to_ofp11(enum netdev_features features)
{
return htonl(features & 0xffff);
}
static enum ofperr
ofputil_decode_ofp10_phy_port(struct ofputil_phy_port *pp,
const struct ofp10_phy_port *opp)
{
pp->port_no = u16_to_ofp(ntohs(opp->port_no));
pp->hw_addr = opp->hw_addr;
ovs_strlcpy_arrays(pp->name, opp->name);
pp->config = ntohl(opp->config) & OFPPC10_ALL;
pp->state = ntohl(opp->state) & OFPPS10_ALL;
pp->curr = netdev_port_features_from_ofp10(opp->curr);
pp->advertised = netdev_port_features_from_ofp10(opp->advertised);
pp->supported = netdev_port_features_from_ofp10(opp->supported);
pp->peer = netdev_port_features_from_ofp10(opp->peer);
pp->curr_speed = netdev_features_to_bps(pp->curr, 0) / 1000;
pp->max_speed = netdev_features_to_bps(pp->supported, 0) / 1000;
return 0;
}
static enum ofperr
ofputil_decode_ofp11_port(struct ofputil_phy_port *pp,
const struct ofp11_port *op)
{
enum ofperr error;
error = ofputil_port_from_ofp11(op->port_no, &pp->port_no);
if (error) {
return error;
}
pp->hw_addr = op->hw_addr;
ovs_strlcpy_arrays(pp->name, op->name);
pp->config = ntohl(op->config) & OFPPC11_ALL;
pp->state = ntohl(op->state) & OFPPS11_ALL;
pp->curr = netdev_port_features_from_ofp11(op->curr);
pp->advertised = netdev_port_features_from_ofp11(op->advertised);
pp->supported = netdev_port_features_from_ofp11(op->supported);
pp->peer = netdev_port_features_from_ofp11(op->peer);
pp->curr_speed = ntohl(op->curr_speed);
pp->max_speed = ntohl(op->max_speed);
return 0;
}
static enum ofperr
parse_ofp14_port_ethernet_property(const struct ofpbuf *payload,
struct ofputil_phy_port *pp)
{
struct ofp14_port_desc_prop_ethernet *eth = payload->data;
if (payload->size != sizeof *eth) {
return OFPERR_OFPBPC_BAD_LEN;
}
pp->curr = netdev_port_features_from_ofp11(eth->curr);
pp->advertised = netdev_port_features_from_ofp11(eth->advertised);
pp->supported = netdev_port_features_from_ofp11(eth->supported);
pp->peer = netdev_port_features_from_ofp11(eth->peer);
pp->curr_speed = ntohl(eth->curr_speed);
pp->max_speed = ntohl(eth->max_speed);
return 0;
}
static enum ofperr
ofputil_pull_ofp14_port_properties(const void *props, size_t len,
struct ofputil_phy_port *pp)
{
struct ofpbuf properties = ofpbuf_const_initializer(props, len);
while (properties.size > 0) {
struct ofpbuf payload;
enum ofperr error;
uint64_t type;
error = ofpprop_pull(&properties, &payload, &type);
if (error) {
return error;
}
switch (type) {
case OFPPDPT14_ETHERNET:
error = parse_ofp14_port_ethernet_property(&payload, pp);
break;
default:
error = OFPPROP_UNKNOWN(true, "port", type);
break;
}
if (error) {
return error;
}
}
return 0;
}
static enum ofperr
ofputil_pull_ofp14_port(struct ofputil_phy_port *pp, struct ofpbuf *msg)
{
const struct ofp14_port *op = ofpbuf_try_pull(msg, sizeof *op);
if (!op) {
return OFPERR_OFPBRC_BAD_LEN;
}
size_t len = ntohs(op->length);
if (len < sizeof *op || len - sizeof *op > msg->size) {
return OFPERR_OFPBRC_BAD_LEN;
}
len -= sizeof *op;
enum ofperr error = ofputil_port_from_ofp11(op->port_no, &pp->port_no);
if (error) {
return error;
}
pp->hw_addr = op->hw_addr;
ovs_strlcpy_arrays(pp->name, op->name);
pp->config = ntohl(op->config) & OFPPC11_ALL;
pp->state = ntohl(op->state) & OFPPS11_ALL;
return ofputil_pull_ofp14_port_properties(ofpbuf_pull(msg, len), len, pp);
}
static enum ofperr
ofputil_pull_ofp16_port(struct ofputil_phy_port *pp, struct ofpbuf *msg)
{
const struct ofp16_port *op = ofpbuf_try_pull(msg, sizeof *op);
if (!op) {
return OFPERR_OFPBRC_BAD_LEN;
}
size_t len = ntohs(op->length);
if (len < sizeof *op || len - sizeof *op > msg->size) {
return OFPERR_OFPBRC_BAD_LEN;
}
len -= sizeof *op;
enum ofperr error = ofputil_port_from_ofp11(op->port_no, &pp->port_no);
if (error) {
return error;
}
pp->hw_addr = op->hw_addr;
pp->hw_addr64 = op->hw_addr64;
ovs_strlcpy_arrays(pp->name, op->name);
pp->config = ntohl(op->config) & OFPPC11_ALL;
pp->state = ntohl(op->state) & OFPPS11_ALL;
return ofputil_pull_ofp14_port_properties(ofpbuf_pull(msg, len), len, pp);
}
static void
ofputil_encode_ofp10_phy_port(const struct ofputil_phy_port *pp,
struct ofp10_phy_port *opp)
{
memset(opp, 0, sizeof *opp);
opp->port_no = htons(ofp_to_u16(pp->port_no));
opp->hw_addr = pp->hw_addr;
ovs_strlcpy_arrays(opp->name, pp->name);
opp->config = htonl(pp->config & OFPPC10_ALL);
opp->state = htonl(pp->state & OFPPS10_ALL);
opp->curr = netdev_port_features_to_ofp10(pp->curr);
opp->advertised = netdev_port_features_to_ofp10(pp->advertised);
opp->supported = netdev_port_features_to_ofp10(pp->supported);
opp->peer = netdev_port_features_to_ofp10(pp->peer);
}
static void
ofputil_encode_ofp11_port(const struct ofputil_phy_port *pp,
struct ofp11_port *op)
{
memset(op, 0, sizeof *op);
op->port_no = ofputil_port_to_ofp11(pp->port_no);
op->hw_addr = pp->hw_addr;
ovs_strlcpy_arrays(op->name, pp->name);
op->config = htonl(pp->config & OFPPC11_ALL);
op->state = htonl(pp->state & OFPPS11_ALL);
op->curr = netdev_port_features_to_ofp11(pp->curr);
op->advertised = netdev_port_features_to_ofp11(pp->advertised);
op->supported = netdev_port_features_to_ofp11(pp->supported);
op->peer = netdev_port_features_to_ofp11(pp->peer);
op->curr_speed = htonl(pp->curr_speed);
op->max_speed = htonl(pp->max_speed);
}
static void
ofputil_encode_ofp14_port_ethernet_prop(
const struct ofputil_phy_port *pp,
struct ofp14_port_desc_prop_ethernet *eth)
{
eth->curr = netdev_port_features_to_ofp11(pp->curr);
eth->advertised = netdev_port_features_to_ofp11(pp->advertised);
eth->supported = netdev_port_features_to_ofp11(pp->supported);
eth->peer = netdev_port_features_to_ofp11(pp->peer);
eth->curr_speed = htonl(pp->curr_speed);
eth->max_speed = htonl(pp->max_speed);
}
static void
ofputil_put_ofp14_port(const struct ofputil_phy_port *pp, struct ofpbuf *b)
{
struct ofp14_port *op;
struct ofp14_port_desc_prop_ethernet *eth;
ofpbuf_prealloc_tailroom(b, sizeof *op + sizeof *eth);
op = ofpbuf_put_zeros(b, sizeof *op);
op->port_no = ofputil_port_to_ofp11(pp->port_no);
op->length = htons(sizeof *op + sizeof *eth);
op->hw_addr = pp->hw_addr;
ovs_strlcpy_arrays(op->name, pp->name);
op->config = htonl(pp->config & OFPPC11_ALL);
op->state = htonl(pp->state & OFPPS11_ALL);
eth = ofpprop_put_zeros(b, OFPPDPT14_ETHERNET, sizeof *eth);
ofputil_encode_ofp14_port_ethernet_prop(pp, eth);
}
static void
ofputil_put_ofp16_port(const struct ofputil_phy_port *pp, struct ofpbuf *b)
{
struct ofp16_port *op;
struct ofp14_port_desc_prop_ethernet *eth;
ofpbuf_prealloc_tailroom(b, sizeof *op + sizeof *eth);
op = ofpbuf_put_zeros(b, sizeof *op);
op->port_no = ofputil_port_to_ofp11(pp->port_no);
op->length = htons(sizeof *op + sizeof *eth);
op->hw_addr = pp->hw_addr;
op->hw_addr64 = pp->hw_addr64;
ovs_strlcpy_arrays(op->name, pp->name);
op->config = htonl(pp->config & OFPPC11_ALL);
op->state = htonl(pp->state & OFPPS11_ALL);
eth = ofpprop_put_zeros(b, OFPPDPT14_ETHERNET, sizeof *eth);
ofputil_encode_ofp14_port_ethernet_prop(pp, eth);
}
void
ofputil_put_phy_port(enum ofp_version ofp_version,
const struct ofputil_phy_port *pp, struct ofpbuf *b)
{
switch (ofp_version) {
case OFP10_VERSION: {
struct ofp10_phy_port *opp = ofpbuf_put_uninit(b, sizeof *opp);
ofputil_encode_ofp10_phy_port(pp, opp);
break;
}
case OFP11_VERSION:
case OFP12_VERSION:
case OFP13_VERSION: {
struct ofp11_port *op = ofpbuf_put_uninit(b, sizeof *op);
ofputil_encode_ofp11_port(pp, op);
break;
}
case OFP14_VERSION:
case OFP15_VERSION:
ofputil_put_ofp14_port(pp, b);
break;
case OFP16_VERSION:
ofputil_put_ofp16_port(pp, b);
break;
default:
OVS_NOT_REACHED();
}
}
enum ofperr
ofputil_decode_port_desc_stats_request(const struct ofp_header *request,
ofp_port_t *port)
{
struct ofpbuf b = ofpbuf_const_initializer(request,
ntohs(request->length));
enum ofpraw raw = ofpraw_pull_assert(&b);
if (raw == OFPRAW_OFPST10_PORT_DESC_REQUEST) {
*port = OFPP_ANY;
return 0;
} else if (raw == OFPRAW_OFPST15_PORT_DESC_REQUEST) {
ovs_be32 *ofp11_port;
ofp11_port = ofpbuf_pull(&b, sizeof *ofp11_port);
return ofputil_port_from_ofp11(*ofp11_port, port);
} else {
OVS_NOT_REACHED();
}
}
struct ofpbuf *
ofputil_encode_port_desc_stats_request(enum ofp_version ofp_version,
ofp_port_t port)
{
struct ofpbuf *request;
switch (ofp_version) {
case OFP10_VERSION:
case OFP11_VERSION:
case OFP12_VERSION:
case OFP13_VERSION:
case OFP14_VERSION:
request = ofpraw_alloc(OFPRAW_OFPST10_PORT_DESC_REQUEST,
ofp_version, 0);
break;
case OFP15_VERSION:
case OFP16_VERSION:{
struct ofp15_port_desc_request *req;
request = ofpraw_alloc(OFPRAW_OFPST15_PORT_DESC_REQUEST,
ofp_version, 0);
req = ofpbuf_put_zeros(request, sizeof *req);
req->port_no = ofputil_port_to_ofp11(port);
break;
}
default:
OVS_NOT_REACHED();
}
return request;
}
void
ofputil_append_port_desc_stats_reply(const struct ofputil_phy_port *pp,
struct ovs_list *replies)
{
struct ofpbuf *reply = ofpbuf_from_list(ovs_list_back(replies));
size_t start_ofs = reply->size;
ofputil_put_phy_port(ofpmp_version(replies), pp, reply);
ofpmp_postappend(replies, start_ofs);
}
/* Given a buffer 'b' that contains an array of OpenFlow ports of type
* 'ofp_version', tries to pull the first element from the array. If
* successful, initializes '*pp' with an abstract representation of the
* port and returns 0. If no ports remain to be decoded, returns EOF.
* On an error, returns a positive OFPERR_* value. */
int
ofputil_pull_phy_port(enum ofp_version ofp_version, struct ofpbuf *b,
struct ofputil_phy_port *pp)
{
memset(pp, 0, sizeof *pp);
switch (ofp_version) {
case OFP10_VERSION: {
const struct ofp10_phy_port *opp = ofpbuf_try_pull(b, sizeof *opp);
return opp ? ofputil_decode_ofp10_phy_port(pp, opp) : EOF;
}
case OFP11_VERSION:
case OFP12_VERSION:
case OFP13_VERSION: {
const struct ofp11_port *op = ofpbuf_try_pull(b, sizeof *op);
return op ? ofputil_decode_ofp11_port(pp, op) : EOF;
}
case OFP14_VERSION:
case OFP15_VERSION:
return b->size ? ofputil_pull_ofp14_port(pp, b) : EOF;
case OFP16_VERSION:
return b->size ? ofputil_pull_ofp16_port(pp, b) : EOF;
default:
OVS_NOT_REACHED();
}
}
void
ofputil_phy_port_format(struct ds *s, 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(s, ' ');
ofputil_format_port(port->port_no, NULL, s);
ds_put_format(s, "(%s): addr:"ETH_ADDR_FMT"\n",
name, ETH_ADDR_ARGS(port->hw_addr));
if (!eth_addr64_is_zero(port->hw_addr64)) {
ds_put_format(s, " addr64: "ETH_ADDR64_FMT"\n",
ETH_ADDR64_ARGS(port->hw_addr64));
}
ds_put_cstr(s, " config: ");
ofputil_port_config_format(s, port->config);
ds_put_cstr(s, " state: ");
ofputil_port_state_format(s, port->state);
if (port->curr) {
ds_put_format(s, " current: ");
netdev_features_format(s, port->curr);
}
if (port->advertised) {
ds_put_format(s, " advertised: ");
netdev_features_format(s, port->advertised);
}
if (port->supported) {
ds_put_format(s, " supported: ");
netdev_features_format(s, port->supported);
}
if (port->peer) {
ds_put_format(s, " peer: ");
netdev_features_format(s, port->peer);
}
ds_put_format(s, " speed: %"PRIu32" Mbps now, "
"%"PRIu32" Mbps max\n",
port->curr_speed / UINT32_C(1000),
port->max_speed / UINT32_C(1000));
}
/* 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;
}
/* Given a buffer 'b' that contains an array of OpenFlow ports of type
* 'ofp_version', writes a detailed description of each port into 'string'. */
enum ofperr
ofputil_phy_ports_format(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++) {
ofputil_phy_port_format(string, &ports[i]);
}
free(ports);
return retval != EOF ? retval : 0;
}
/* ofputil_port_status */
/* Decodes the OpenFlow "port status" message in '*ops' into an abstract form
* in '*ps'. Returns 0 if successful, otherwise an OFPERR_* value. */
enum ofperr
ofputil_decode_port_status(const struct ofp_header *oh,
struct ofputil_port_status *ps)
{
struct ofpbuf b = ofpbuf_const_initializer(oh, ntohs(oh->length));
ofpraw_pull_assert(&b);
const struct ofp_port_status *ops = ofpbuf_pull(&b, sizeof *ops);
if (ops->reason != OFPPR_ADD &&
ops->reason != OFPPR_DELETE &&
ops->reason != OFPPR_MODIFY) {
return OFPERR_NXBRC_BAD_REASON;
}
ps->reason = ops->reason;
int retval = ofputil_pull_phy_port(oh->version, &b, &ps->desc);
ovs_assert(retval != EOF);
return retval;
}
/* Converts the abstract form of a "port status" message in '*ps' into an
* OpenFlow message suitable for 'protocol', and returns that encoded form in
* a buffer owned by the caller. */
struct ofpbuf *
ofputil_encode_port_status(const struct ofputil_port_status *ps,
enum ofputil_protocol protocol)
{
struct ofp_port_status *ops;
struct ofpbuf *b;
enum ofp_version version;
enum ofpraw raw;
version = ofputil_protocol_to_ofp_version(protocol);
switch (version) {
case OFP10_VERSION:
raw = OFPRAW_OFPT10_PORT_STATUS;
break;
case OFP11_VERSION:
case OFP12_VERSION:
case OFP13_VERSION:
raw = OFPRAW_OFPT11_PORT_STATUS;
break;
case OFP14_VERSION:
case OFP15_VERSION:
raw = OFPRAW_OFPT14_PORT_STATUS;
break;
case OFP16_VERSION:
raw = OFPRAW_OFPT16_PORT_STATUS;
break;
default:
OVS_NOT_REACHED();
}
b = ofpraw_alloc_xid(raw, version, htonl(0), 0);
ops = ofpbuf_put_zeros(b, sizeof *ops);
ops->reason = ps->reason;
ofputil_put_phy_port(version, &ps->desc, b);
ofpmsg_update_length(b);
return b;
}
void
ofputil_port_status_format(struct ds *s,
const struct ofputil_port_status *ps)
{
if (ps->reason == OFPPR_ADD) {
ds_put_format(s, " ADD:");
} else if (ps->reason == OFPPR_DELETE) {
ds_put_format(s, " DEL:");
} else if (ps->reason == OFPPR_MODIFY) {
ds_put_format(s, " MOD:");
}
ofputil_phy_port_format(s, &ps->desc);
}
/* ofputil_port_mod */
static enum ofperr
parse_port_mod_ethernet_property(struct ofpbuf *property,
struct ofputil_port_mod *pm)
{
ovs_be32 advertise;
enum ofperr error;
error = ofpprop_parse_be32(property, &advertise);
if (!error) {
pm->advertise = netdev_port_features_from_ofp11(advertise);
}
return error;
}