wwd_result_t host_buffer_get( wiced_buffer_t * buffer, wwd_buffer_dir_t direction, unsigned short size, wiced_bool_t wait )
{
volatile UINT status;
NX_PACKET **nx_buffer = (NX_PACKET **) buffer;
NX_PACKET_POOL* pool = ( direction == WWD_NETWORK_TX ) ? tx_pool : rx_pool;
wiced_assert("Error: pools have not been set up\n", pool != NULL);
if ( size > WICED_LINK_MTU )
{
WPRINT_NETWORK_DEBUG(("Attempt to allocate a buffer larger than the MTU of the link\n"));
return WWD_BUFFER_UNAVAILABLE_PERMANENT;
}
if ( NX_SUCCESS != ( status = nx_packet_allocate( pool, nx_buffer, 0, ( wait == WICED_TRUE ) ? NX_WAIT_FOREVER : NX_NO_WAIT ) ) )
{
/* If there is no packet in the system TX pool, check whether there is any packet available in the application defined tx pool */
/* and try to allocate from there */
if( status == NX_NO_PACKET )
{
if( ( direction == WWD_NETWORK_TX ) && ( application_defined_tx_pool != NULL ) )
{
if ( NX_SUCCESS != ( status = nx_packet_allocate( application_defined_tx_pool, nx_buffer, 0, ( wait == WICED_TRUE ) ? NX_WAIT_FOREVER : NX_NO_WAIT ) ) )
{
return WWD_BUFFER_UNAVAILABLE_TEMPORARY;
}
else
{
( *nx_buffer )->nx_packet_length = size;
( *nx_buffer )->nx_packet_append_ptr = ( *nx_buffer )->nx_packet_prepend_ptr + size;
}
}
else if( ( direction == WWD_NETWORK_RX ) && ( application_defined_rx_pool != NULL ) )
{
if ( NX_SUCCESS != ( status = nx_packet_allocate( application_defined_rx_pool, nx_buffer, 0, ( wait == WICED_TRUE ) ? NX_WAIT_FOREVER : NX_NO_WAIT ) ) )
{
return WWD_BUFFER_UNAVAILABLE_TEMPORARY;
}
else
{
( *nx_buffer )->nx_packet_length = size;
( *nx_buffer )->nx_packet_append_ptr = ( *nx_buffer )->nx_packet_prepend_ptr + size;
}
}
else
{
return WWD_BUFFER_UNAVAILABLE_TEMPORARY;
}
}
else
{
return WWD_BUFFER_ALLOC_FAIL;
}
}
( *nx_buffer )->nx_packet_length = size;
( *nx_buffer )->nx_packet_append_ptr = ( *nx_buffer )->nx_packet_prepend_ptr + size;
return WWD_SUCCESS;
}
INT send( INT sockID, const CHAR *msg, INT msgLength, INT flags )
{
switch ( sockets[sockID].type )
{
case BSD_SOCKET_TCP:
{
NX_PACKET* packet;
INT progress = 0;
while ( progress != msgLength )
{
nx_packet_allocate( &wiced_packet_pools[0], &packet, NX_TCP_PACKET, NX_WAIT_FOREVER );
INT data_length = MIN( msgLength, sockets[sockID].socket.tcp.nx_tcp_socket_mss );
nx_packet_data_append( packet, (VOID*) msg, data_length, &wiced_packet_pools[0], NX_WAIT_FOREVER );
if ( nx_tcp_socket_send(&sockets[sockID].socket.tcp, packet, NX_WAIT_FOREVER) != NX_SUCCESS )
{
nx_packet_release( packet );
return BSD_ERROR;
}
else
{
progress += data_length;
msg += data_length;
}
}
return progress;
break;
}
case BSD_SOCKET_UDP:
{
NX_PACKET* packet;
nx_packet_allocate( &wiced_packet_pools[0], &packet, NX_UDP_PACKET, NX_WAIT_FOREVER );
nx_packet_data_append( packet, (VOID*) msg, msgLength, &wiced_packet_pools[0], NX_WAIT_FOREVER );
if ( nx_udp_socket_send(&sockets[sockID].socket.udp, packet, htonl(SOCK4_ADDRESS(&sockets[sockID].last_received_peer)), hton16(SOCK4_PORT(&sockets[sockID].last_received_peer))) != NX_SUCCESS )
{
nx_packet_release( packet );
}
else
{
return msgLength;
}
break;
}
}
return BSD_ERROR;
}
INT sendto( INT sockID, CHAR *msg, INT msgLength, INT flags, struct sockaddr *destAddr, INT destAddrLen )
{
switch ( sockets[sockID].type )
{
case BSD_SOCKET_TCP:
{
NX_PACKET* packet;
nx_packet_allocate( &wiced_packet_pools[0], &packet, NX_TCP_PACKET, NX_WAIT_FOREVER );
INT data_length = MIN( msgLength, sockets[sockID].socket.tcp.nx_tcp_socket_mss );
nx_packet_data_append( packet, (VOID*) msg, data_length, &wiced_packet_pools[0], NX_WAIT_FOREVER );
if ( nx_tcp_socket_send(&sockets[sockID].socket.tcp, packet, NX_WAIT_FOREVER) != NX_SUCCESS )
{
nx_packet_release( packet );
}
else
{
return data_length;
}
break;
}
case BSD_SOCKET_UDP:
{
NX_PACKET* packet;
/* Note that it's important to specify the packet as NX_IPv4_UDP_PACKET otherwise NetX Duo allocates another 20 bytes for IPv6 header and iperf won't work properly */
nx_packet_allocate( &wiced_packet_pools[0], &packet, NX_UDP_PACKET, NX_WAIT_FOREVER );
nx_packet_data_append( packet, msg, msgLength, &wiced_packet_pools[0], NX_WAIT_FOREVER );
if ( nx_udp_socket_send(&sockets[sockID].socket.udp, packet, htonl(SOCK4_ADDRESS(destAddr)), hton16(SOCK4_PORT(destAddr))) != NX_SUCCESS )
{
nx_packet_release( packet );
}
else
{
return msgLength;
}
break;
}
}
return BSD_ERROR;
}
int s7g2_write(Network* n, unsigned char* buffer, int len, int timeout_ms)
{
UINT status;
NX_PACKET *packet_ptr;
status = nx_packet_allocate(n->my_packet_pool, &packet_ptr, NX_TCP_PACKET, timeout_ms);
if(status) return -1;
status = nx_packet_data_append(packet_ptr, buffer, len, n->my_packet_pool, timeout_ms);
if(status) return -1;
status = nx_tcp_socket_send(&n->my_socket, packet_ptr, timeout_ms);
if(status) return -1;
nx_packet_release(packet_ptr);
return len;
}
/* The NetX send callback
* return : bytes sent, or error
*/
int NetX_Send(CYASSL* ssl, char *buf, int sz, void *ctx)
{
NetX_Ctx* nxCtx = (NetX_Ctx*)ctx;
NX_PACKET* packet;
NX_PACKET_POOL* pool; /* shorthand */
UINT status;
if (nxCtx == NULL || nxCtx->nxSocket == NULL) {
CYASSL_MSG("NetX Send NULL parameters");
return CYASSL_CBIO_ERR_GENERAL;
}
pool = nxCtx->nxSocket->nx_tcp_socket_ip_ptr->nx_ip_default_packet_pool;
status = nx_packet_allocate(pool, &packet, NX_TCP_PACKET,
nxCtx->nxWait);
if (status != NX_SUCCESS) {
CYASSL_MSG("NetX Send packet alloc error");
return CYASSL_CBIO_ERR_GENERAL;
}
status = nx_packet_data_append(packet, buf, sz, pool, nxCtx->nxWait);
if (status != NX_SUCCESS) {
nx_packet_release(packet);
CYASSL_MSG("NetX Send data append error");
return CYASSL_CBIO_ERR_GENERAL;
}
status = nx_tcp_socket_send(nxCtx->nxSocket, packet, nxCtx->nxWait);
if (status != NX_SUCCESS) {
nx_packet_release(packet);
CYASSL_MSG("NetX Send socket send error");
return CYASSL_CBIO_ERR_GENERAL;
}
return sz;
}
wwd_result_t host_buffer_add_remove_at_front( wiced_buffer_t * buffer, int32_t add_remove_amount )
{
NX_PACKET **nx_buffer = (NX_PACKET **) buffer;
UCHAR * new_start = ( *nx_buffer )->nx_packet_prepend_ptr + add_remove_amount;
wiced_assert("Error: Invalid buffer\n", buffer != NULL);
if ( new_start < ( *nx_buffer )->nx_packet_data_start )
{
#ifdef SUPPORT_BUFFER_CHAINING
/* Requested position will not fit in current buffer - need to chain one in front of current buffer */
NX_PACKET *new_nx_buffer;
if ( NX_SUCCESS != ( status = nx_packet_allocate( (*nx_buffer)->nx_packet_pool_owner, &new_nx_buffer, 0, NX_NO_WAIT ) ) )
{
WPRINT_NETWORK_DEBUG(("Could not allocate another buffer to prepend in front of existing buffer\n"));
return -1;
}
/* New buffer has been allocated - set it up at front of chain */
(*new_nx_buffer)->nx_packet_length = -add_remove_amount;
(*new_nx_buffer)->nx_packet_append_ptr = (*nx_buffer)->nx_packet_prepend_ptr - add_remove_amount;
(*new_nx_buffer)->nx_packet_next = nx_buffer;
*nx_buffer = new_nx_buffer;
new_start = (*nx_buffer)->nx_packet_prepend_ptr;
#else /* ifdef SUPPORT_BUFFER_CHAINING */
/* Trying to move to a location before start - not supported without buffer chaining*/
WPRINT_NETWORK_ERROR(("Attempt to move to a location before start - not supported without buffer chaining\n"));
return WWD_BUFFER_POINTER_MOVE_ERROR;
#endif /* ifdef SUPPORT_BUFFER_CHAINING */
}
else if ( new_start > ( *nx_buffer )->nx_packet_data_end )
{
#ifdef SUPPORT_BUFFER_CHAINING
/* moving to a location after end of current buffer - remove buffer from chain */
NX_PACKET *new_head_nx_buffer = (*nx_buffer)->nx_packet_next;
if ( new_head_nx_buffer == NULL )
{
/* there are no buffers after current buffer - can't move to requested location */
WPRINT_NETWORK_DEBUG(("Can't move to requested location - there are no buffers after current buffer\n"));
return -3;
}
new_head_nx_buffer->nx_packet_length -= (new_start - nx_buffer->nx_packet_append_ptr);
new_head_nx_buffer->nx_packet_prepend_ptr += (new_start - nx_buffer->nx_packet_append_ptr);
(*nx_buffer)->nx_packet_next = NULL;
if ( NX_SUCCESS != (status = nx_packet_release( *nx_buffer ) ) )
{
WPRINT_NETWORK_DEBUG(("Could not release packet after removal from chain- leaking buffer\n"));
return -4;
}
*nx_buffer = new_head_nx_buffer;
new_start = (*nx_buffer)->nx_packet_prepend_ptr;
#else /* ifdef SUPPORT_BUFFER_CHAINING */
/* Trying to move to a location after end of buffer - not supported without buffer chaining */
WPRINT_NETWORK_ERROR(("Attempt to move to a location after end of buffer - not supported without buffer chaining\n"));
return WWD_BUFFER_POINTER_MOVE_ERROR;
#endif /* ifdef SUPPORT_BUFFER_CHAINING */
}
else
{
( *nx_buffer )->nx_packet_prepend_ptr = new_start;
if (( *nx_buffer )->nx_packet_append_ptr < ( *nx_buffer )->nx_packet_prepend_ptr )
{
( *nx_buffer )->nx_packet_append_ptr = ( *nx_buffer )->nx_packet_prepend_ptr;
}
( *nx_buffer )->nx_packet_length = (ULONG) ( ( *nx_buffer )->nx_packet_length - (ULONG) add_remove_amount );
}
return WWD_SUCCESS;
}
