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Reformat NCM class.

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This commit is contained in:
HiFiPhile 2024-05-07 00:10:26 +02:00
parent 45d450d1f0
commit 91d69fa942
2 changed files with 624 additions and 755 deletions
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141
src/class/net/ncm.h
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@ -25,58 +25,59 @@
* This file is part of the TinyUSB stack.
*/
#ifndef _TUSB_NCM_H_
#define _TUSB_NCM_H_
#include "common/tusb_common.h"
#include "lwipopts.h"
#ifndef CFG_TUD_NCM_IN_NTB_MAX_SIZE
#define CFG_TUD_NCM_IN_NTB_MAX_SIZE (2 * TCP_MSS + 100)
#endif
// NTB buffers size for reception side, must be >> MTU to avoid TCP retransmission (driver issue ?)
// Linux use 2048 as minimal size
#ifndef CFG_TUD_NCM_OUT_NTB_MAX_SIZE
#define CFG_TUD_NCM_OUT_NTB_MAX_SIZE (2 * TCP_MSS + 100)
#define CFG_TUD_NCM_OUT_NTB_MAX_SIZE 3200
#endif
// NTB buffers size for reception side, must be > MTU
// Linux use 2048 as minimal size
#ifndef CFG_TUD_NCM_IN_NTB_MAX_SIZE
#define CFG_TUD_NCM_IN_NTB_MAX_SIZE 3200
#endif
// Number of NTB buffers for reception side
// Depending on the configuration, this parameter could be increased with the cost of additional RAM requirements
// On Full-Speed (RP2040) :
// 1 - good performance
// 2 - up to 30% more performance with iperf with small packets
// >2 - no performance gain
// On High-Speed (STM32F7) :
// No performance gain
#ifndef CFG_TUD_NCM_OUT_NTB_N
/// number of NTB buffers for reception side
/// 1 - good performance
/// 2 - up to 30% more performance with iperf with small packets
/// >2 - no performance gain
/// -> for performance optimizations this parameter could be increased with the cost of additional RAM requirements
#define CFG_TUD_NCM_OUT_NTB_N 1
#define CFG_TUD_NCM_OUT_NTB_N 1
#endif
// Number of NTB buffers for transmission side
// Depending on the configuration, this parameter could be increased with the cost of additional RAM requirements
// On Full-Speed (RP2040) :
// 1 - good performance but SystemView shows lost events (on load test)
// 2 - up to 50% more performance with iperf with small packets, "tud_network_can_xmit: request blocked"
// happens from time to time with SystemView
// 3 - "tud_network_can_xmit: request blocked" never happens
// >3 - no performance gain
// On High-Speed (STM32F7) :
// No performance gain
#ifndef CFG_TUD_NCM_IN_NTB_N
/// number of NTB buffers for transmission side
/// 1 - good performance but SystemView shows lost events (on load test)
/// 2 - up to 50% more performance with iperf with small packets, "tud_network_can_xmit: request blocked"
/// happens from time to time with SystemView
/// 3 - "tud_network_can_xmit: request blocked" never happens
/// >2 - no performance gain
/// -> for performance optimizations this parameter could be increased with the cost of additional RAM requirements
#define CFG_TUD_NCM_IN_NTB_N 1
#define CFG_TUD_NCM_IN_NTB_N 1
#endif
// How many datagrams it is allowed to put into an NTB for transmission side
#ifndef CFG_TUD_NCM_IN_MAX_DATAGRAMS_PER_NTB
/// this is for the transmission side for allocation of \a ndp16_datagram_t
#define CFG_TUD_NCM_IN_MAX_DATAGRAMS_PER_NTB 8
#define CFG_TUD_NCM_IN_MAX_DATAGRAMS_PER_NTB 8
#endif
// This tells the host how many datagrams it is allowed to put into an NTB
#ifndef CFG_TUD_NCM_OUT_MAX_DATAGRAMS_PER_NTB
/// this tells the host how many datagrams it is allowed to put into an NTB
#define CFG_TUD_NCM_OUT_MAX_DATAGRAMS_PER_NTB 6
#define CFG_TUD_NCM_OUT_MAX_DATAGRAMS_PER_NTB 6
#endif
#ifndef CFG_TUD_NCM_ALIGNMENT
#define CFG_TUD_NCM_ALIGNMENT 4
#endif
#if (CFG_TUD_NCM_ALIGNMENT != 4)
#error "CFG_TUD_NCM_ALIGNMENT must be 4, otherwise the headers and start of datagrams have to be aligned (which they are currently not)"
#endif
// Table 6.2 Class-Specific Request Codes for Network Control Model subclass
typedef enum
{
@ -98,67 +99,65 @@ typedef enum
NCM_SET_CRC_MODE = 0x8A,
} ncm_request_code_t;
#define NTH16_SIGNATURE 0x484D434E
#define NTH16_SIGNATURE 0x484D434E
#define NDP16_SIGNATURE_NCM0 0x304D434E
#define NDP16_SIGNATURE_NCM1 0x314D434E
typedef struct TU_ATTR_PACKED {
uint16_t wLength;
uint16_t bmNtbFormatsSupported;
uint32_t dwNtbInMaxSize;
uint16_t wNdbInDivisor;
uint16_t wNdbInPayloadRemainder;
uint16_t wNdbInAlignment;
uint16_t wReserved;
uint32_t dwNtbOutMaxSize;
uint16_t wNdbOutDivisor;
uint16_t wNdbOutPayloadRemainder;
uint16_t wNdbOutAlignment;
uint16_t wNtbOutMaxDatagrams;
uint16_t wLength;
uint16_t bmNtbFormatsSupported;
uint32_t dwNtbInMaxSize;
uint16_t wNdbInDivisor;
uint16_t wNdbInPayloadRemainder;
uint16_t wNdbInAlignment;
uint16_t wReserved;
uint32_t dwNtbOutMaxSize;
uint16_t wNdbOutDivisor;
uint16_t wNdbOutPayloadRemainder;
uint16_t wNdbOutAlignment;
uint16_t wNtbOutMaxDatagrams;
} ntb_parameters_t;
typedef struct TU_ATTR_PACKED {
uint32_t dwSignature;
uint16_t wHeaderLength;
uint16_t wSequence;
uint16_t wBlockLength;
uint16_t wNdpIndex;
uint32_t dwSignature;
uint16_t wHeaderLength;
uint16_t wSequence;
uint16_t wBlockLength;
uint16_t wNdpIndex;
} nth16_t;
typedef struct TU_ATTR_PACKED {
uint16_t wDatagramIndex;
uint16_t wDatagramLength;
uint16_t wDatagramIndex;
uint16_t wDatagramLength;
} ndp16_datagram_t;
typedef struct TU_ATTR_PACKED {
uint32_t dwSignature;
uint16_t wLength;
uint16_t wNextNdpIndex;
//ndp16_datagram_t datagram[];
uint32_t dwSignature;
uint16_t wLength;
uint16_t wNextNdpIndex;
//ndp16_datagram_t datagram[];
} ndp16_t;
typedef union TU_ATTR_PACKED {
struct {
nth16_t nth;
ndp16_t ndp;
ndp16_datagram_t ndp_datagram[CFG_TUD_NCM_IN_MAX_DATAGRAMS_PER_NTB + 1];
};
uint8_t data[CFG_TUD_NCM_IN_NTB_MAX_SIZE];
struct {
nth16_t nth;
ndp16_t ndp;
ndp16_datagram_t ndp_datagram[CFG_TUD_NCM_IN_MAX_DATAGRAMS_PER_NTB + 1];
};
uint8_t data[CFG_TUD_NCM_IN_NTB_MAX_SIZE];
} xmit_ntb_t;
typedef union TU_ATTR_PACKED {
struct {
nth16_t nth;
// only the header is at a guaranteed position
};
uint8_t data[CFG_TUD_NCM_OUT_NTB_MAX_SIZE];
struct {
nth16_t nth;
// only the header is at a guaranteed position
};
uint8_t data[CFG_TUD_NCM_OUT_NTB_MAX_SIZE];
} recv_ntb_t;
struct ncm_notify_t {
tusb_control_request_t header;
uint32_t downlink, uplink;
tusb_control_request_t header;
uint32_t downlink, uplink;
};
#endif

1238
src/class/net/ncm_device.c
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