88
edits
Changes
→Initalize
== Initalize ==
== Initalize ==
Takes a [[#BsdConfig]] (made-up name), the PID, the size of the transfer memory and a copy-handle of the latter.
Takes a [[#BsdBufferConfig]] (made-up name), the PID, the size of the transfer memory and a copy-handle of the latter.
=== BsdConfig ===
=== BsdBufferConfig ===
/// Configuration structure for bsdInitalize
typedef struct {
typedef struct {
u32 version; ///< Observed 1 on 2.0 LibAppletWeb, 2 on 3.0.
u32 version; ///< Observed 1 on 2.0 LibAppletWeb, 2 on 3.0.
u32 tcpSendBufferSize; ///< Size of the TCP send buffer (initial or fixed).
u32 tcpReceiveBufferSize; ///< Size of the TCP recieve buffer (initial or fixed).
u32 tcp_tx_buf_size; ///< Size of the TCP transfer (send) buffer (initial or fixed).
u32 tcpSendBufferMaxSize; ///< Maximum size of the TCP send buffer. If it is 0, the initial size of the buffer is actually fixed.
u32 tcp_rx_buf_size; ///< Size of the TCP recieve buffer (initial or fixed).
u32 tcpReceiveBufferMaxSize; ///< Maximum size of the TCP receive buffer. If it is 0, the initial size of the buffer is actually fixed.
u32 tcp_tx_buf_max_size; ///< Maximum size of the TCP transfer (send) buffer. If it is 0, the size of the buffer is fixed to its initial value.
u32 udpSendBufferSize; ///< Size of the TCP send buffer (typically 0x2400 bytes).
u32 tcp_rx_buf_max_size; ///< Maximum size of the TCP receive buffer. If it is 0, the size of the buffer is fixed to its initial value.
u32 udpSendBufferSize; ///< Size of the TCP send buffer (typically 0xA500 bytes).
u32 udp_tx_buf_size; ///< Size of the UDP transfer (send) buffer (typically 0x2400 bytes).
} BsdConfig;
u32 udp_rx_buf_size; ///< Size of the UDP receive buffer (typically 0xA500 bytes).
u32 sb_efficiency; ///< Number of buffers for each socket (standard values range from 1 to 8).
} BsdBufferConfig;
The transfer memory must be larger than a the computed size below. Should the transfer memory be smaller than that, the BSD sockets service would only send ZeroWindow packets (for TCP), resulting in a transfer rate not exceeding 1 byte/s.
static size_t _bsdGetTransferMemSizeForConfig(const BsdConfig *config)
{
u32 tcp_tx_buf_max_size = config->tcp_tx_buf_max_size != 0 ? config->tcp_tx_buf_max_size : config->tcp_tx_buf_size;
u32 tcp_rx_buf_max_size = config->tcp_rx_buf_max_size != 0 ? config->tcp_rx_buf_max_size : config->tcp_rx_buf_size;
u32 sum = tcp_tx_buf_max_size + tcp_rx_buf_max_size + config->udp_tx_buf_size + config->udp_rx_buf_size;
sum = ((sum + 0xFFF) >> 12) << 12; // page round-up
return (size_t)(config->sb_efficiency * sum);
}
= sfdnsres =
= sfdnsres =