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cc_of_msg_prep.c
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/*
* mul_of_msg.c: MUL openflow message handling
* Copyright (C) 2012, Dipjyoti Saikia <[email protected]>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "cc_of_msg_prep.h"
static buffer *
cc_create_header( const uint32_t xid, const uint8_t type, const uint16_t length ) {
buffer *buf;
alloc_new_data(buf);
if(buf == NULL)
{
perror("alloc failed");
log_err_for_cc("alloc error!");
return NULL;
}
struct ofp_header *header = append_back_buffer( buffer, length );
if(header== NULL)
{
perror("create header failed");
log_err_for_cc("create header error!");
return NULL;
}
memset( header, 0, length );
header->version = OFP_VERSION;
header->type = type;
header->length = htons( length );
header->xid = htonl( xid );
return buffer;
}
static buffer *
cc_create_error(uint32_t xid, uint16_t type, uint16_t code, buffer* data)
{
struct ofp_error_msg *error_msg;
uint16_t len;
uint16_t data_len = 0;
buffer *buffer;
if((data != NULL) && (data->length > 0) )
{
data_len = (uint16_t)data->length;
}
len = (uint16_t)(sizeof( struct ofp_error_msg ) + data_len);
buffer = cc_create_header(xid,OFPT_ERROR,len);
error_msg = (struct ofp_error_msg *)buffer->data;
error_msg->type = htons(type);
error_msg->code = htons(code);
if(data_len > 0)
{
memcpy(error_msg->data,data->data,data->length);
}
return buffer;
}
static buffer*
cc_create_hello(uint32_t xid)
{
return cc_create_header(xid,OFPT_HELLO, sizeof( struct ofp_header ));
}
/* param: xid is the genereate with rand
* param: buf is used to calculate the len except the ofp header
*/
static buffer*
cc_create_echo_request(uint32_t xid, buffer* buf)
{
int data_length = 0;
if ( ( buf!= NULL ) && ( buf->length > 0 ) ) {
data_length = ( uint16_t ) buf->length;
}
buffer* echo_requset = cc_create_header(xid, OFPT_ECHO_REQUEST, ( uint16_t ) ( sizeof( struct ofp_header ) + data_length ) );
if( echo_requset == NULL )
{
return NULL;
}
if( data_length > 0 )
{
memcpy( (char*)echo_request->data + sizeof( struct ofp_header ), buf->data, data_length);
}
return echo_requset;
}
static buffer*
cc_create_echo_reply(uint32_t xid,buffer* buf)
{
int data_length = 0;
if ( ( buf!= NULL ) && ( buf->length > 0 ) ) {
data_length = ( uint16_t ) buf->length;
}
buffer *echo_reply = cc_create_header( xid, OFPT_ECHO_REPLY, ( uint16_t ) ( sizeof( struct ofp_header ) + data_length ) );
if ( data_length > 0 ) {
memcpy( ( char * ) echo_reply->data + sizeof( struct ofp_header ), body->data, data_length );
}
return echo_reply;
}
buffer *
cc_create_vendor( const uint32_t transaction_id, const uint32_t vendor, const buffer *data ) {
void *d;
uint16_t length;
uint16_t data_length = 0;
buffer *buffer;
struct ofp_vendor_header *vendor_header;
if ( ( data != NULL ) && ( data->length > 0 ) ) {
data_length = ( uint16_t ) data->length;
}
//debug( "Creating a vendor ( xid = %#x, vendor = %#x, data length = %u ).",
// transaction_id, vendor, data_length );
length = ( uint16_t ) ( sizeof( struct ofp_vendor_header ) + data_length );
buffer = cc_create_header( transaction_id, OFPT_VENDOR, length );
//assert( buffer != NULL );
vendor_header = ( struct ofp_vendor_header * ) buffer->data;
vendor_header->vendor = htonl( vendor );
if ( data_length > 0 ) {
d = ( void * ) ( ( char * ) buffer->data + sizeof( struct ofp_vendor_header ) );
memcpy( d, data->data, data_length );
}
return buffer;
}
buffer *
cc_create_features_request( const uint32_t transaction_id ) {
//debug( "Creating a features request ( xid = %#x ).", transaction_id );
return cc_create_header( transaction_id, OFPT_FEATURES_REQUEST, sizeof( struct ofp_header ) );
}
buffer *
cc_create_features_reply( const uint32_t transaction_id, const uint64_t datapath_id,
const uint32_t n_buffers, const uint8_t n_tables,
const uint32_t capabilities, const uint32_t actions,
const list_element *ports ) {
char port_str[ 1024 ];
int count = 0;
uint16_t n_ports = 0;
buffer *buffer;
struct ofp_switch_features *switch_features;
struct ofp_phy_port *phy_port;
struct ofp_phy_port pn;
list_element *p = NULL, *port;
//debug( "Creating a features reply "
// "( xid = %#x, datapath_id = %#" PRIx64 ", n_buffers = %u, n_tables = %u, capabilities = %#x, actions = %#x ).",
// transaction_id, datapath_id, n_buffers, n_tables, capabilities, actions );
if ( ports != NULL ) {
p = ( list_element * ) malloc( sizeof( list_element ) );
memcpy( p, ports, sizeof( list_element ) );
port = p;
while ( port != NULL ) {
port = port->next;
n_ports++;
}
}
//debug( "# of ports = %u.", n_ports );
buffer = cc_create_header( transaction_id, OFPT_FEATURES_REPLY,
( uint16_t ) ( offsetof( struct ofp_switch_features, ports )
+ sizeof( struct ofp_phy_port ) * n_ports ) );
//assert( buffer != NULL );
switch_features = ( struct ofp_switch_features * ) buffer->data;
switch_features->datapath_id = htonll( datapath_id );
switch_features->n_buffers = htonl( n_buffers );
switch_features->n_tables = n_tables;
memset( switch_features->pad, 0, sizeof( switch_features->pad ) );
switch_features->capabilities = htonl( capabilities );
switch_features->actions = htonl( actions );
if ( n_ports ) {
phy_port = ( struct ofp_phy_port * ) ( ( char * ) buffer->data
+ offsetof( struct ofp_switch_features, ports ) );
port = p;
while ( port != NULL ) {
phy_port_to_string( port->data, port_str, sizeof( port_str ) );
//debug( "[%u] %s", count++, port_str );
hton_phy_port( &pn, ( struct ofp_phy_port * ) port->data );
memcpy( phy_port, &pn, sizeof( struct ofp_phy_port ) );
port = port->next;
phy_port++;
}
free( p );
}
return buffer;
}
buffer *
cc_create_get_config_request( const uint32_t transaction_id ) {
//debug( "Creating a get config request ( xid = %#x ).", transaction_id );
return cc_create_header( transaction_id, OFPT_GET_CONFIG_REQUEST, sizeof( struct ofp_header ) );
}
buffer *
cc_create_get_config_reply( const uint32_t transaction_id, const uint16_t flags,
const uint16_t miss_send_len ) {
buffer *buffer;
struct ofp_switch_config *switch_config;
//debug( "Creating a get config reply ( xid = %#x, flags = %#x, miss_send_len = %u ).",
// transaction_id, flags, miss_send_len );
buffer = cc_create_header( transaction_id, OFPT_GET_CONFIG_REPLY, sizeof( struct ofp_switch_config ) );
//assert( buffer != NULL );
switch_config = ( struct ofp_switch_config * ) buffer->data;
switch_config->flags = htons( flags );
switch_config->miss_send_len = htons( miss_send_len );
return buffer;
}
buffer *
cc_create_set_config( const uint32_t transaction_id, const uint16_t flags, uint16_t miss_send_len ) {
//debug( "Creating a set config ( xid = %#x, flags = %#x, miss_send_len = %u ).",
// transaction_id, flags, miss_send_len );
buffer *set_config = cc_create_header( transaction_id, OFPT_SET_CONFIG, sizeof( struct ofp_switch_config ) );
//assert( set_config != NULL );
struct ofp_switch_config *switch_config = ( struct ofp_switch_config * ) set_config->data;
switch_config->flags = htons( flags );
switch_config->miss_send_len = htons( miss_send_len );
return set_config;
}
buffer *
cc_create_packet_in( const uint32_t transaction_id, const uint32_t buffer_id, const uint16_t total_len,
uint16_t in_port, const uint8_t reason, const buffer *data ) {
uint16_t data_length = 0;
buffer *buffer;
struct ofp_packet_in *packet_in;
if ( ( data != NULL ) && ( data->length > 0 ) ) {
data_length = ( uint16_t ) data->length;
}
//debug( "Creating a packet-in "
// "( xid = %#x, buffer_id = %#x, total_len = %u, "
// "in_port = %u, reason = %#x, data length = %u ).",
// transaction_id, buffer_id, total_len,
// in_port, reason, data_length );
buffer = cc_create_header( transaction_id, OFPT_PACKET_IN,
( uint16_t ) ( offsetof( struct ofp_packet_in, data ) + data_length ) );
//assert( buffer != NULL );
packet_in = ( struct ofp_packet_in * ) buffer->data;
packet_in->buffer_id = htonl( buffer_id );
packet_in->total_len = htons( total_len );
packet_in->in_port = htons( in_port );
packet_in->reason = reason;
packet_in->pad = 0;
if ( data_length > 0 ) {
memcpy( packet_in->data, data->data, data_length );
}
return buffer;
}
buffer *
cc_create_flow_removed( const uint32_t transaction_id, const struct ofp_match match,
const uint64_t cookie, const uint16_t priority,
const uint8_t reason, const uint32_t duration_sec,
const uint32_t duration_nsec, const uint16_t idle_timeout,
const uint64_t packet_count, const uint64_t byte_count ) {
char match_str[ 1024 ];
buffer *buffer;
struct ofp_match m = match;
struct ofp_flow_removed *flow_removed;
/*
// Because match_to_string() is costly, we check logging_level first.
if ( get_logging_level() >= LOG_DEBUG ) {
match_to_string( &m, match_str, sizeof( match_str ) );
//debug( "Creating a flow removed "
"( xid = %#x, match = [%s], cookie = %#" PRIx64 ", priority = %u, "
"reason = %#x, duration_sec = %u, duration_nsec = %u, "
"idle_timeout = %u, packet_count = %" PRIu64 ", byte_count = %" PRIu64 " ).",
transaction_id, match_str, cookie, priority,
reason, duration_sec, duration_nsec,
idle_timeout, packet_count, byte_count );
}
*/
buffer = cc_create_header( transaction_id, OFPT_FLOW_REMOVED, sizeof( struct ofp_flow_removed ) );
//assert( buffer != NULL );
flow_removed = ( struct ofp_flow_removed * ) buffer->data;
hton_match( &flow_removed->match, &m );
flow_removed->cookie = htonll( cookie );
flow_removed->priority = htons( priority );
flow_removed->reason = reason;
memset( &flow_removed->pad, 0, sizeof( flow_removed->pad ) );
flow_removed->duration_sec = htonl( duration_sec );
flow_removed->duration_nsec = htonl( duration_nsec );
flow_removed->idle_timeout = htons( idle_timeout );
memset( &flow_removed->pad2, 0, sizeof( flow_removed->pad2 ) );
flow_removed->packet_count = htonll( packet_count );
flow_removed->byte_count = htonll( byte_count );
return buffer;
}
buffer *
cc_create_port_status( const uint32_t transaction_id, const uint8_t reason,
const struct ofp_phy_port desc ) {
char desc_str[ 1024 ];
buffer *buffer;
struct ofp_phy_port d = desc;
struct ofp_port_status *port_status;
phy_port_to_string( &d, desc_str, sizeof( desc_str ) );
//debug( "Creating a port status ( xid = %#x, reason = %#x, desc = [%s] ).",
// transaction_id, reason, desc_str );
buffer = cc_create_header( transaction_id, OFPT_PORT_STATUS, sizeof( struct ofp_port_status ) );
//assert( buffer != NULL );
port_status = ( struct ofp_port_status * ) buffer->data;
port_status->reason = reason;
memset( &port_status->pad, 0, sizeof( port_status->pad ) );
hton_phy_port( &port_status->desc, &d );
return buffer;
}
buffer *
cc_create_packet_out( const uint32_t transaction_id, const uint32_t buffer_id, const uint16_t in_port,
const openflow_actions *actions, const buffer *data ) {
void *a, *d;
uint16_t length;
uint16_t data_length = 0;
uint16_t action_length = 0;
uint16_t actions_length = 0;
buffer *buffer;
struct ofp_packet_out *packet_out;
struct ofp_action_header *action_header;
list_element *action;
if ( ( data != NULL ) && ( data->length > 0 ) ) {
data_length = ( uint16_t ) data->length;
}
//debug( "Creating a packet-out ( xid = %#x, buffer_id = %#x, in_port = %u, data length = %u ).",
// transaction_id, buffer_id, in_port, data_length );
if ( buffer_id == UINT_MAX ) {
if ( data == NULL ) {
//die( "An Ethernet frame must be provided if buffer_id is equal to %#x", UINT_MAX );
log_err_for_cc("An Ethernet frame must be provided if buffer_id is equal to UINT_MAX");
return CC_ERROR;
}
if ( data->length + ETH_FCS_LENGTH < ETH_MINIMUM_LENGTH ) {
//die( "The length of the provided Ethernet frame is shorter than the minimum length of an Ethernet frame (= %d bytes).", ETH_MINIMUM_LENGTH );
log_err_for_cc("The length of the provided Ethernet frame is shorter than the minimum length of an Ethernet frame");
return CC_ERROR;
}
}
if ( actions != NULL ) {
//debug( "# of actions = %d.", actions->n_actions );
actions_length = get_actions_length( actions );
}
length = ( uint16_t ) ( offsetof( struct ofp_packet_out, actions ) + actions_length + data_length );
buffer = cc_create_header( transaction_id, OFPT_PACKET_OUT, length );
//assert( buffer != NULL );
packet_out = ( struct ofp_packet_out * ) buffer->data;
packet_out->buffer_id = htonl( buffer_id );
packet_out->in_port = htons( in_port );
packet_out->actions_len = htons( actions_length );
if ( actions_length > 0 ) {
a = ( void * ) ( ( char * ) buffer->data + offsetof( struct ofp_packet_out, actions ) );
action = actions->list;
while ( action != NULL ) {
action_header = ( struct ofp_action_header * ) action->data;
action_length = action_header->len;
hton_action( ( struct ofp_action_header * ) a, action_header );
a = ( void * ) ( ( char * ) a + action_length );
action = action->next;
}
}
if ( data_length > 0 ) {
d = ( void * ) ( ( char * ) buffer->data
+ offsetof( struct ofp_packet_out, actions ) + actions_length );
memcpy( d, data->data, data_length );
}
return buffer;
}
buffer *
cc_create_flow_mod( const uint32_t transaction_id, const struct ofp_match match,
const uint64_t cookie, const uint16_t command,
const uint16_t idle_timeout, const uint16_t hard_timeout,
const uint16_t priority, const uint32_t buffer_id,
const uint16_t out_port, const uint16_t flags,
const openflow_actions *actions ) {
void *a;
char match_str[ 1024 ];
uint16_t length;
uint16_t action_length = 0;
uint16_t actions_length = 0;
buffer *buffer;
struct ofp_match m = match;
struct ofp_flow_mod *flow_mod;
struct ofp_action_header *action_header;
list_element *action;
/*
// Because match_to_string() is costly, we check logging_level first.
if ( get_logging_level() >= LOG_DEBUG ) {
match_to_string( &m, match_str, sizeof( match_str ) );
//debug( "Creating a flow modification "
"( xid = %#x, match = [%s], cookie = %#" PRIx64 ", command = %#x, "
"idle_timeout = %u, hard_timeout = %u, priority = %u, "
"buffer_id = %#x, out_port = %u, flags = %#x ).",
transaction_id, match_str, cookie, command,
idle_timeout, hard_timeout, priority,
buffer_id, out_port, flags );
}
*/
if ( actions != NULL ) {
//debug( "# of actions = %d.", actions->n_actions );
actions_length = get_actions_length( actions );
}
length = ( uint16_t ) ( offsetof( struct ofp_flow_mod, actions ) + actions_length );
buffer = cc_create_header( transaction_id, OFPT_FLOW_MOD, length );
//assert( buffer != NULL );
flow_mod = ( struct ofp_flow_mod * ) buffer->data;
hton_match( &flow_mod->match, &m );
flow_mod->cookie = htonll( cookie );
flow_mod->command = htons( command );
flow_mod->idle_timeout = htons( idle_timeout );
flow_mod->hard_timeout = htons( hard_timeout );
flow_mod->priority = htons( priority );
flow_mod->buffer_id = htonl( buffer_id );
flow_mod->out_port = htons( out_port );
flow_mod->flags = htons( flags );
if ( actions_length > 0 ) {
a = ( void * ) ( ( char * ) buffer->data + offsetof( struct ofp_flow_mod, actions ) );
action = actions->list;
while ( action != NULL ) {
action_header = ( struct ofp_action_header * ) action->data;
action_length = action_header->len;
hton_action( ( struct ofp_action_header * ) a, action_header );
a = ( void * ) ( ( char * ) a + action_length );
action = action->next;
}
}
return buffer;
}
buffer *
cc_create_port_mod( const uint32_t transaction_id, const uint16_t port_no,
const uint8_t hw_addr[ OFP_ETH_ALEN ], const uint32_t config,
const uint32_t mask, const uint32_t advertise ) {
buffer *buffer;
struct ofp_port_mod *port_mod;
transaction_id, port_no,
hw_addr[ 0 ], hw_addr[ 1 ], hw_addr[ 2 ], hw_addr[ 3 ], hw_addr[ 4 ], hw_addr[ 5 ],
config, mask, advertise );
buffer = cc_create_header( transaction_id, OFPT_PORT_MOD, sizeof( struct ofp_port_mod ) );
//assert( buffer != NULL );
port_mod = ( struct ofp_port_mod * ) buffer->data;
port_mod->port_no = htons( port_no );
memcpy( port_mod->hw_addr, hw_addr, OFP_ETH_ALEN );
port_mod->config = htonl( config );
port_mod->mask = htonl( mask );
port_mod->advertise = htonl( advertise );
memset( port_mod->pad, 0, sizeof( port_mod->pad ) );
return buffer;
}
static buffer *
cc_create_stats_request( const uint32_t transaction_id, const uint16_t type,
const uint16_t length, const uint16_t flags ) {
buffer *buffer;
struct ofp_stats_request *stats_request;
//debug( "Creating a stats request ( xid = %#x, type = %#x, length = %u, flags = %#x ).",
//transaction_id, type, length, flags );
buffer = cc_create_header( transaction_id, OFPT_STATS_REQUEST, length );
//assert( buffer != NULL );
stats_request = ( struct ofp_stats_request * ) buffer->data;
stats_request->type = htons( type );
stats_request->flags = htons( flags );
return buffer;
}
buffer *
cc_create_desc_stats_request( const uint32_t transaction_id, const uint16_t flags ) {
//debug( "Creating a description stats request ( xid = %#x, flags = %#x ).",
//transaction_id, flags );
return cc_create_stats_request( transaction_id, OFPST_DESC,
sizeof( struct ofp_stats_request ), flags );
}
buffer *
cc_create_flow_stats_request( const uint32_t transaction_id, const uint16_t flags,
const struct ofp_match match, const uint8_t table_id,
const uint16_t out_port ) {
char match_str[ 1024 ];
uint16_t length;
buffer *buffer;
struct ofp_match m = match;
struct ofp_flow_stats_request *flow_stats_request;
/*
// Because match_to_string() is costly, we check logging_level first.
if ( get_logging_level() >= LOG_DEBUG ) {
match_to_string( &m, match_str, sizeof( match_str ) );
//debug( "Creating a flow stats request ( xid = %#x, flags = %#x, match = [%s], table_id = %u, out_port = %u ).",
transaction_id, flags, match_str, table_id, out_port );
}
*/
length = ( uint16_t ) ( offsetof( struct ofp_stats_request, body )
+ sizeof( struct ofp_flow_stats_request ) );
buffer = cc_create_stats_request( transaction_id, OFPST_FLOW, length, flags );
//assert( buffer != NULL );
flow_stats_request = ( struct ofp_flow_stats_request * ) ( ( char * ) buffer->data
+ offsetof( struct ofp_stats_request, body ) );
hton_match( &flow_stats_request->match, &m );
flow_stats_request->table_id = table_id;
flow_stats_request->pad = 0;
flow_stats_request->out_port = htons( out_port );
return buffer;
}
buffer *
cc_create_aggregate_stats_request( const uint32_t transaction_id,
const uint16_t flags, const struct ofp_match match,
const uint8_t table_id, const uint16_t out_port ) {
char match_str[ 1024 ];
uint16_t length;
buffer *buffer;
struct ofp_match m = match;
struct ofp_aggregate_stats_request *aggregate_stats_request;
/*
// Because match_to_string() is costly, we check logging_level first.
if ( get_logging_level() >= LOG_DEBUG ) {
match_to_string( &m, match_str, sizeof( match_str ) );
//debug( "Creating an aggregate stats request ( xid = %#x, flags = %#x, match = [%s], table_id = %u, out_port = %u ).",
transaction_id, flags, match_str, table_id, out_port );
}
*/
length = ( uint16_t ) ( offsetof( struct ofp_stats_request, body )
+ sizeof( struct ofp_aggregate_stats_request ) );
buffer = cc_create_stats_request( transaction_id, OFPST_AGGREGATE, length, flags );
//assert( buffer != NULL );
aggregate_stats_request = ( struct ofp_aggregate_stats_request * ) ( ( char * ) buffer->data
+ offsetof( struct ofp_stats_request, body ) );
hton_match( &aggregate_stats_request->match, &m );
aggregate_stats_request->table_id = table_id;
aggregate_stats_request->pad = 0;
aggregate_stats_request->out_port = htons( out_port );
return buffer;
}
buffer *
cc_create_table_stats_request( const uint32_t transaction_id, const uint16_t flags ) {
//debug( "Creating a table stats request ( xid = %#x, flags = %#x ).", transaction_id, flags );
return cc_create_stats_request( transaction_id, OFPST_TABLE,
sizeof( struct ofp_stats_request ), flags );
}
buffer *
cc_create_port_stats_request( const uint32_t transaction_id, const uint16_t flags,
const uint16_t port_no ) {
uint16_t length;
buffer *buffer;
struct ofp_port_stats_request *port_stats_request;
//debug( "Creating a port stats request ( xid = %#x, flags = %#x, port_no = %u ).",
// transaction_id, flags, port_no );
length = ( uint16_t ) ( offsetof( struct ofp_stats_request, body )
+ sizeof( struct ofp_port_stats_request ) );
buffer = cc_create_stats_request( transaction_id, OFPST_PORT, length, flags );
//assert( buffer != NULL );
port_stats_request = ( struct ofp_port_stats_request * ) ( ( char * ) buffer->data
+ offsetof( struct ofp_stats_request, body ) );
port_stats_request->port_no = htons( port_no );
memset( &port_stats_request->pad, 0, sizeof( port_stats_request->pad ) );
return buffer;
}
buffer *
cc_create_queue_stats_request( const uint32_t transaction_id, const uint16_t flags,
const uint16_t port_no, const uint32_t queue_id ) {
uint16_t length;
buffer *buffer;
struct ofp_queue_stats_request *queue_stats_request;
//debug( "Creating a queue stats request ( xid = %#x, flags = %#x, port_no = %u, queue_id = %u ).",
//transaction_id, flags, port_no, queue_id );
length = ( uint16_t ) ( offsetof( struct ofp_stats_request, body )
+ sizeof( struct ofp_queue_stats_request ) );
buffer = cc_create_stats_request( transaction_id, OFPST_QUEUE, length, flags );
//assert( buffer != NULL );
queue_stats_request = ( struct ofp_queue_stats_request * ) ( ( char * ) buffer->data
+ offsetof( struct ofp_stats_request, body ) );
queue_stats_request->port_no = htons( port_no );
memset( &queue_stats_request->pad, 0, sizeof( queue_stats_request->pad ) );
queue_stats_request->queue_id = htonl( queue_id );
return buffer;
}
buffer *
cc_create_vendor_stats_request( const uint32_t transaction_id, const uint16_t flags,
const uint32_t vendor, const buffer *body ) {
void *b;
uint16_t length;
uint16_t data_length = 0;
uint32_t *v;
buffer *buffer;
if ( ( body != NULL ) && ( body->length > 0 ) ) {
data_length = ( uint16_t ) body->length;
}
//debug( "Creating a vendor stats request ( xid = %#x, flags = %#x, vendor = %#x, data length = %u ).",
//transaction_id, flags, vendor, data_length );
length = ( uint16_t ) ( offsetof( struct ofp_stats_request, body ) + sizeof( uint32_t )
+ data_length );
buffer = cc_create_stats_request( transaction_id, OFPST_VENDOR, length, flags );
//assert( buffer != NULL );
v = ( uint32_t * ) ( ( char * ) buffer->data + offsetof( struct ofp_stats_request, body ) );
*v = htonl( vendor );
if ( data_length > 0 ) {
b = ( void * ) ( ( char * ) buffer->data
+ offsetof( struct ofp_stats_request, body ) + sizeof( uint32_t ) );
memcpy( b, body->data, data_length );
}
return buffer;
}
static buffer *
cc_create_stats_reply( const uint32_t transaction_id, const uint16_t type,
const uint16_t length, const uint16_t flags ) {
buffer *buffer;
struct ofp_stats_reply *stats_reply;
//debug( "Creating a stats reply ( xid = %#x, type = %#x, length = %u, flags = %#x ).",
//transaction_id, type, length, flags );
buffer = cc_create_header( transaction_id, OFPT_STATS_REPLY, length );
//assert( buffer != NULL );
stats_reply = ( struct ofp_stats_reply * ) buffer->data;
stats_reply->type = htons( type );
stats_reply->flags = htons( flags );
return buffer;
}
buffer *
cc_create_desc_stats_reply( const uint32_t transaction_id, const uint16_t flags,
const char mfr_desc[ DESC_STR_LEN ],
const char hw_desc[ DESC_STR_LEN ],
const char sw_desc[ DESC_STR_LEN ],
const char serial_num[ SERIAL_NUM_LEN ],
const char dp_desc[ DESC_STR_LEN ] ) {
uint16_t length;
buffer *buffer;
struct ofp_stats_reply *stats_reply;
struct ofp_desc_stats *desc_stats;
//debug( "Creating a description stats reply "
// "( xid = %#x, flags = %#x, mfr_desc = %s, hw_desc = %s, sw_desc = %s, serial_num = %s, dp_desc = %s ).",
// transaction_id, flags, mfr_desc, hw_desc, sw_desc, serial_num, dp_desc );
length = ( uint16_t ) ( offsetof( struct ofp_stats_reply, body )
+ sizeof( struct ofp_desc_stats ) );
buffer = cc_create_stats_reply( transaction_id, OFPST_DESC, length, flags );
//assert( buffer != NULL );
stats_reply = ( struct ofp_stats_reply * ) buffer->data;
desc_stats = ( struct ofp_desc_stats * ) stats_reply->body;
memcpy( desc_stats->mfr_desc, mfr_desc, DESC_STR_LEN );
memcpy( desc_stats->hw_desc, hw_desc, DESC_STR_LEN );
memcpy( desc_stats->sw_desc, sw_desc, DESC_STR_LEN );
memcpy( desc_stats->serial_num, serial_num, DESC_STR_LEN );
memcpy( desc_stats->dp_desc, dp_desc, DESC_STR_LEN );
return buffer;
}
buffer *
cc_create_flow_stats_reply( const uint32_t transaction_id, const uint16_t flags,
const list_element *flows_stats_head ) {
int n_flows = 0;
uint16_t length = 0;
buffer *buffer;
list_element *f = NULL;
list_element *flow = NULL;
struct ofp_stats_reply *stats_reply;
struct ofp_flow_stats *fs, *flow_stats;
//debug( "Creating a flow stats reply ( xid = %#x, flags = %#x ).", transaction_id, flags );
if ( flows_stats_head != NULL ) {
f = ( list_element * ) malloc( sizeof( list_element ) );
memcpy( f, flows_stats_head, sizeof( list_element ) );
}
flow = f;
while ( flow != NULL ) {
flow_stats = flow->data;
length = ( uint16_t ) ( length + flow_stats->length );
n_flows++;
flow = flow->next;
}
//debug( "# of flows = %d.", n_flows );
length = ( uint16_t ) ( offsetof( struct ofp_stats_reply, body ) + length );
buffer = cc_create_stats_reply( transaction_id, OFPST_FLOW, length, flags );
//assert( buffer != NULL );
stats_reply = ( struct ofp_stats_reply * ) buffer->data;
flow_stats = ( struct ofp_flow_stats * ) stats_reply->body;
flow = f;
while ( flow != NULL ) {
fs = ( struct ofp_flow_stats * ) flow->data;
hton_flow_stats( flow_stats, fs );
flow_stats = ( struct ofp_flow_stats * ) ( ( char * ) flow_stats + fs->length );
flow = flow->next;
}
if ( f != NULL ) {
free( f );
}
return buffer;
}
buffer *
cc_create_aggregate_stats_reply( const uint32_t transaction_id, const uint16_t flags,
const uint64_t packet_count, const uint64_t byte_count,
const uint32_t flow_count ) {
uint16_t length;
buffer *buffer;
struct ofp_stats_reply *stats_reply;
struct ofp_aggregate_stats_reply *aggregate_stats_reply;
//debug( "Creating an aggregate stats reply "
// "( xid = %#x, flags = %#x, packet_count = %" PRIu64 ", byte_count = %" PRIu64 ", flow_count = %u ).",
// transaction_id, flags, packet_count, byte_count, flow_count );
length = ( uint16_t ) ( offsetof( struct ofp_stats_reply, body )
+ sizeof( struct ofp_aggregate_stats_reply ) );
buffer = cc_create_stats_reply( transaction_id, OFPST_AGGREGATE, length, flags );
//assert( buffer != NULL );
stats_reply = ( struct ofp_stats_reply * ) buffer->data;
aggregate_stats_reply = ( struct ofp_aggregate_stats_reply * ) stats_reply->body;
aggregate_stats_reply->packet_count = htonll( packet_count );
aggregate_stats_reply->byte_count = htonll( byte_count );
aggregate_stats_reply->flow_count = htonl( flow_count );
memset( &aggregate_stats_reply->pad, 0, sizeof( aggregate_stats_reply->pad ) );
return buffer;
}
buffer *
cc_create_table_stats_reply( const uint32_t transaction_id, const uint16_t flags,
const list_element *table_stats_head ) {
uint16_t length;
uint16_t n_tables = 0;
buffer *buffer;
list_element *t = NULL;
list_element *table = NULL;
struct ofp_stats_reply *stats_reply;
struct ofp_table_stats *ts, *table_stats;
//debug( "Creating a table stats reply ( xid = %#x, flags = %#x ).", transaction_id, flags );
if ( table_stats_head != NULL ) {
t = ( list_element * ) malloc( sizeof( list_element ) );
memcpy( t, table_stats_head, sizeof( list_element ) );
}
table = t;
while ( table != NULL ) {
n_tables++;
table = table->next;
}
//debug( "# of tables = %u.", n_tables );
length = ( uint16_t ) ( offsetof( struct ofp_stats_reply, body )
+ sizeof( struct ofp_table_stats ) * n_tables );
buffer = cc_create_stats_reply( transaction_id, OFPST_TABLE, length, flags );
//assert( buffer != NULL );
stats_reply = ( struct ofp_stats_reply * ) buffer->data;
table_stats = ( struct ofp_table_stats * ) stats_reply->body;
table = t;
while ( table != NULL ) {
ts = ( struct ofp_table_stats * ) table->data;
hton_table_stats( table_stats, ts );
table = table->next;
table_stats++;
}
if ( t != NULL ) {
free( t );
}
return buffer;
}
buffer *
cc_create_port_stats_reply( const uint32_t transaction_id, const uint16_t flags,
const list_element *port_stats_head ) {
uint16_t length;
uint16_t n_ports = 0;
buffer *buffer;
list_element *p = NULL;
list_element *port = NULL;
struct ofp_stats_reply *stats_reply;
struct ofp_port_stats *ps, *port_stats;
//debug( "Creating a port stats reply ( xid = %#x, flags = %#x ).", transaction_id, flags );
if ( port_stats_head != NULL ) {
p = ( list_element * ) malloc( sizeof( list_element ) );
memcpy( p, port_stats_head, sizeof( list_element ) );
}
port = p;
while ( port != NULL ) {
n_ports++;
port = port->next;
}
//debug( "# of ports = %u.", n_ports );
length = ( uint16_t ) ( offsetof( struct ofp_stats_reply, body )
+ sizeof( struct ofp_port_stats ) * n_ports );
buffer = cc_create_stats_reply( transaction_id, OFPST_PORT, length, flags );
//assert( buffer != NULL );
stats_reply = ( struct ofp_stats_reply * ) buffer->data;
port_stats = ( struct ofp_port_stats * ) stats_reply->body;
port = p;
while ( port != NULL ) {
ps = ( struct ofp_port_stats * ) port->data;
hton_port_stats( port_stats, ps );
port = port->next;
port_stats++;
}
if ( p != NULL ) {
free( p );
}
return buffer;
}
buffer *
cc_create_queue_stats_reply( const uint32_t transaction_id, const uint16_t flags,
const list_element *queue_stats_head ) {
uint16_t length;
uint16_t n_queues = 0;
buffer *buffer;
list_element *q = NULL;
list_element *queue = NULL;
struct ofp_stats_reply *stats_reply;
struct ofp_queue_stats *qs, *queue_stats;
//debug( "Creating a queue stats reply ( xid = %#x, flags = %#x ).", transaction_id, flags );
if ( queue_stats_head != NULL ) {
q = ( list_element * ) malloc( sizeof( list_element ) );
memcpy( q, queue_stats_head, sizeof( list_element ) );
}
queue = q;
while ( queue != NULL ) {
n_queues++;
queue = queue->next;
}
//debug( "# of queues = %u.", n_queues );