static void
handle_flow_mod_mod( const uint32_t transaction_id, const uint64_t cookie,
const uint64_t cookie_mask, const uint8_t table_id,
const uint16_t idle_timeout, const uint16_t hard_timeout,
const uint16_t priority, const uint32_t buffer_id,
const uint16_t flags, const oxm_matches *oxm,
const openflow_instructions *instructions,
const bool strict, struct protocol *protocol ) {
match *match = create_match( );
if ( oxm != NULL && oxm->n_matches > 0 ) {
for ( list_element *e = oxm->list; e != NULL; e = e->next ) {
oxm_match_header *hdr = e->data;
assign_match( match, hdr );
}
}
instruction_set *ins_set = create_instruction_set();
if ( instructions != NULL ) {
OFDPE ret = assign_instructions( ins_set, instructions->list );
if ( ret != OFDPE_SUCCESS ) {
send_error_message( transaction_id, OFPET_FLOW_MOD_FAILED, OFPBIC_UNSUP_INST );
delete_instruction_set( ins_set );
delete_match( match );
return;
}
}
OFDPE ret = update_or_add_flow_entry( table_id, match, cookie, cookie_mask, priority, idle_timeout, hard_timeout,
flags, strict, ins_set );
delete_instruction_set( ins_set );
delete_match( match );
if ( ret != OFDPE_SUCCESS ) {
uint16_t type = OFPET_FLOW_MOD_FAILED;
uint16_t code = OFPFMFC_UNKNOWN;
get_ofp_error( ret, &type, &code );
send_error_message( transaction_id, type, code );
return;
}
if ( buffer_id != OFP_NO_BUFFER ) {
action_list *actions = create_action_list();
action *action = create_action_output( OFPP_TABLE, UINT16_MAX );
append_action( actions, action );
ret = execute_packet_out( buffer_id, 0, actions, NULL );
delete_action_list( actions );
if ( ret != OFDPE_SUCCESS ) {
uint16_t type = OFPET_FLOW_MOD_FAILED;
uint16_t code = OFPFMFC_UNKNOWN;
get_ofp_error( ret, &type, &code );
send_error_message( transaction_id, type, code );
return;
}
wakeup_datapath( protocol );
}
}
static action_list *
complete_action_list( void ) {
action_list *ac_list = init_action_list();
// expect_value( mock_is_valid_port_no, port_no, PORT_NO );
action *ac_output = create_action_output( PORT_NO, MAX_LEN );
append_action( ac_list, ac_output );
const uint32_t group_id = GROUP_ID;
action *ac_group = create_action_group( group_id );
append_action( ac_list, ac_group );
const uint32_t queue_id = QUEUE_ID;
action *ac_set_queue = create_action_set_queue( queue_id );
append_action( ac_list, ac_set_queue );
const uint8_t mpls_ttl = MPLS_TTL;
action *ac_set_mpls_ttl = create_action_set_mpls_ttl( mpls_ttl );
append_action( ac_list, ac_set_mpls_ttl );
action *ac_dec_mpls_ttl = create_action_dec_mpls_ttl();
append_action( ac_list, ac_dec_mpls_ttl );
const uint8_t nw_ttl = NW_TTL;
action *ac_set_ipv4_ttl = create_action_set_ipv4_ttl( nw_ttl );
append_action( ac_list, ac_set_ipv4_ttl );
action *ac_dec_ipv4_ttl = create_action_dec_ipv4_ttl();
append_action( ac_list, ac_dec_ipv4_ttl );
action *ac_copy_ttl_out = create_action_copy_ttl_out();
append_action( ac_list, ac_copy_ttl_out );
action *ac_copy_ttl_in = create_action_copy_ttl_in();
append_action( ac_list, ac_copy_ttl_in );
const uint16_t ether_type = VLAN_ETHERTYPE;
action *ac_action_push_vlan = create_action_push_vlan( ether_type );
append_action( ac_list, ac_action_push_vlan );
const uint16_t mpls_type = MPLS_ETHERTYPE;
action *ac_action_push_mpls = create_action_push_mpls( mpls_type );
append_action( ac_list, ac_action_push_mpls );
const uint16_t pbb_type = PBB_ETHERTYPE;
action *ac_action_push_pbb = create_action_push_pbb( pbb_type );
append_action( ac_list, ac_action_push_pbb );
action *ac_action_pop_vlan = create_action_pop_vlan();
append_action( ac_list, ac_action_pop_vlan );
action *ac_action_pop_mpls = create_action_pop_mpls( mpls_type );
append_action( ac_list, ac_action_pop_mpls );
action *ac_action_pop_pbb = create_action_pop_pbb();
append_action( ac_list, ac_action_pop_pbb );
match *match = init_match();
action *ac_action_set_field = create_action_set_field( match );
append_action( ac_list, ac_action_set_field );
return ac_list;
}
static void
handle_flow_mod_add( const uint32_t transaction_id, const uint64_t cookie,
const uint64_t cookie_mask, const uint8_t table_id,
const uint16_t idle_timeout, const uint16_t hard_timeout,
const uint16_t priority, const uint32_t buffer_id,
const uint16_t flags, const oxm_matches *oxm,
const openflow_instructions *instructions,
struct protocol *protocol ) {
UNUSED( cookie_mask );
/*
* currently if flags set OFPFF_SEND_FLOW_REM and OFPFF_RESET_COUNTS are the only allowed value.
*/
if ( ( flags & ~( OFPFF_SEND_FLOW_REM | OFPFF_RESET_COUNTS ) ) != 0 ) {
send_error_message( transaction_id, OFPET_FLOW_MOD_FAILED, OFPFMFC_BAD_FLAGS );
return;
}
/*
* The use of OFPTT_ALL is only valid for delete requests.
*/
if ( table_id == OFPTT_ALL ) {
send_error_message( transaction_id, OFPET_FLOW_MOD_FAILED, OFPFMFC_BAD_TABLE_ID );
return;
}
/*
* If no buffered packet is associated with a flow mod it must be set
* to OFP_NO_BUFFER otherwise it must be equal to the buffer_id sent to
* controller by a packet-in message.
*/
match *match = create_match();
if ( oxm != NULL && oxm->n_matches > 0 ) {
#ifdef DEBUG
char oxm_str[ 2048 ];
match_to_string( oxm, oxm_str, sizeof( oxm_str ) );
printf( "%s\n", oxm_str );
#endif
for ( list_element *e = oxm->list; e != NULL; e = e->next ) {
oxm_match_header *hdr = e->data;
assign_match( match, hdr );
}
}
instruction_set *instruction_set = create_instruction_set();
if ( instructions != NULL ) {
OFDPE ret = assign_instructions( instruction_set, instructions->list );
if ( ret != OFDPE_SUCCESS ) {
send_error_message( transaction_id, OFPET_FLOW_MOD_FAILED, OFPBIC_UNSUP_INST );
delete_instruction_set( instruction_set );
delete_match( match );
return;
}
}
/*
* When a flow entry is inserted in a table, its flags field is set with the
* values from the message.
* When a flow entry is inserted in a table, its idle_timeout and
* hard_timeout fields are set with the values from the message.
* When a flow entry is inserted in a table through an OFPFC_ADD message,
* its cookie field is set to the provided value
*/
flow_entry *new_entry = alloc_flow_entry( match, instruction_set, priority,
idle_timeout, hard_timeout, flags, cookie );
if ( new_entry == NULL ) {
/*
* TODO we should send a more appropriate error once we worked out the
* datapath errors.
*/
delete_instruction_set( instruction_set );
delete_match( match );
send_error_message( transaction_id, OFPET_FLOW_MOD_FAILED, OFPFMFC_UNKNOWN );
return;
}
OFDPE ret = add_flow_entry( table_id, new_entry, flags );
if ( ret != OFDPE_SUCCESS ) {
error( "Failed to add a flow entry ( ret = %d ).", ret );
delete_instruction_set( instruction_set );
delete_match( match );
uint16_t type = OFPET_FLOW_MOD_FAILED;
uint16_t code = OFPFMFC_UNKNOWN;
get_ofp_error( ret, &type, &code );
send_error_message( transaction_id, type, code );
return;
}
if ( buffer_id != OFP_NO_BUFFER ) {
action_list *actions = create_action_list();
action *action = create_action_output( OFPP_TABLE, UINT16_MAX );
append_action( actions, action );
ret = execute_packet_out( buffer_id, 0, actions, NULL );
delete_action_list( actions );
if ( ret != OFDPE_SUCCESS ) {
uint16_t type = OFPET_FLOW_MOD_FAILED;
uint16_t code = OFPFMFC_UNKNOWN;
get_ofp_error( ret, &type, &code );
send_error_message( transaction_id, type, code );
return;
}
wakeup_datapath( protocol );
}
}
