From cc70958c16f4b88c0e48590d32189c870091547e Mon Sep 17 00:00:00 2001 From: Hardy Griech Date: Sun, 5 May 2024 21:18:57 +0200 Subject: [PATCH] mostly comments --- src/class/net/ncm_device.c | 56 ++++++++++++++++++++++++-------------- 1 file changed, 35 insertions(+), 21 deletions(-) diff --git a/src/class/net/ncm_device.c b/src/class/net/ncm_device.c index 40f70dc3f..05cebf94e 100644 --- a/src/class/net/ncm_device.c +++ b/src/class/net/ncm_device.c @@ -79,7 +79,7 @@ typedef struct { uint8_t rhport; //!< storage of \a rhport because some callbacks are done without it // recv handling - CFG_TUSB_MEM_ALIGN recv_ntb_t recv_ntb[RECV_NTB_N]; //!< actual recv NTBs + CFG_TUSB_MEM_ALIGN recv_ntb_t recv_ntb[RECV_NTB_N]; //!< actual recv NTBs recv_ntb_t *recv_free_ntb[RECV_NTB_N]; //!< free list of recv NTBs recv_ntb_t *recv_ready_ntb[RECV_NTB_N]; //!< NTBs waiting for transmission to glue logic recv_ntb_t *recv_tinyusb_ntb; //!< buffer for the running transfer TinyUSB -> driver @@ -87,7 +87,7 @@ typedef struct { uint16_t recv_glue_ntb_datagram_ndx; //!< index into \a recv_glue_ntb_datagram // xmit handling - CFG_TUSB_MEM_ALIGN xmit_ntb_t xmit_ntb[XMIT_NTB_N]; //!< actual xmit NTBs + CFG_TUSB_MEM_ALIGN xmit_ntb_t xmit_ntb[XMIT_NTB_N]; //!< actual xmit NTBs xmit_ntb_t *xmit_free_ntb[XMIT_NTB_N]; //!< free list of xmit NTBs xmit_ntb_t *xmit_ready_ntb[XMIT_NTB_N]; //!< NTBs waiting for transmission to TinyUSB xmit_ntb_t *xmit_tinyusb_ntb; //!< buffer for the running transfer driver -> TinyUSB @@ -129,6 +129,18 @@ CFG_TUSB_MEM_SECTION CFG_TUSB_MEM_ALIGN tu_static const ntb_parameters_t ntb_par .wNtbOutMaxDatagrams = CFG_TUD_NCM_OUT_MAX_DATAGRAMS_PER_NTB, }; +// Some confusing remarks about wNtbOutMaxDatagrams... +// ==1 -> SystemView packets/s goes up to 2000 and events are lost during startup +// ==0 -> SystemView runs fine, iperf shows in wireshark a lot of error +// ==6 -> SystemView runs fine, iperf also +// >6 -> iperf starts to show errors +// -> 6 seems to be the best value. Why? Don't know, perhaps only on my system? +// switch \a TU_LOG2 on to see interesting values for this. +// +// iperf: for MSS in 100 200 400 800 1200 1450 1500; do iperf -c 192.168.14.1 -e -i 1 -M $MSS -l 8192 -P 1; sleep 2; done +// sysview: SYSTICKS_PER_SEC=35000, IDLE_US=1000, PRINT_MOD=1000 +// + //----------------------------------------------------------------------------- // // everything about notifications @@ -340,7 +352,7 @@ static void xmit_start_if_possible(uint8_t rhport) ncm_interface.xmit_glue_ntb = NULL; } -#ifdef DEBUG_OUT_ENABLED +#if CFG_TUSB_DEBUG >= 3 { uint16_t len = ncm_interface.xmit_tinyusb_ntb->nth.wBlockLength; TU_LOG3(" %d\n", len); @@ -708,7 +720,7 @@ bool tud_network_can_xmit(uint16_t size) return true; } xmit_start_if_possible(ncm_interface.rhport); - TU_LOG2("tud_network_can_xmit: request blocked\n"); // could happen if all xmit buffers are full (but should happen rarely) + TU_LOG2("(II) tud_network_can_xmit: request blocked\n"); // could happen if all xmit buffers are full (but should happen rarely) return false; } // tud_network_can_xmit @@ -796,10 +808,18 @@ void netd_init(void) } } // netd_init -bool netd_deinit(void) { - return true; + + +bool netd_deinit(void) +/** + * Deinit driver + */ +{ + return true; } + + void netd_reset(uint8_t rhport) /** * Resets the port. @@ -947,12 +967,14 @@ bool netd_control_xfer_cb(uint8_t rhport, uint8_t stage, tusb_control_request_t } switch (request->bmRequestType_bit.type) { - case TUSB_REQ_TYPE_STANDARD: { + case TUSB_REQ_TYPE_STANDARD: + TU_LOG3(" TUSB_REQ_TYPE_STANDARD: %d\n", request->bRequest); + switch (request->bRequest) { case TUSB_REQ_GET_INTERFACE: { TU_VERIFY(ncm_interface.itf_num + 1 == request->wIndex, false); - TU_LOG3(" TUSB_REQ_GET_INTERFACE - %d\n", ncm_interface.itf_data_alt); + TU_LOG3(" TUSB_REQ_GET_INTERFACE - %d\n", ncm_interface.itf_data_alt); tud_control_xfer(rhport, request, &ncm_interface.itf_data_alt, 1); } break; @@ -961,7 +983,7 @@ bool netd_control_xfer_cb(uint8_t rhport, uint8_t stage, tusb_control_request_t TU_VERIFY(ncm_interface.itf_num + 1 == request->wIndex && request->wValue < 2, false); ncm_interface.itf_data_alt = (uint8_t)request->wValue; - TU_LOG3(" TUSB_REQ_SET_INTERFACE - %d %d %d\n", ncm_interface.itf_data_alt, request->wIndex, ncm_interface.itf_num); + TU_LOG3(" TUSB_REQ_SET_INTERFACE - %d %d %d\n", ncm_interface.itf_data_alt, request->wIndex, ncm_interface.itf_num); if (ncm_interface.itf_data_alt == 1) { tud_network_recv_renew_r(rhport); @@ -975,15 +997,14 @@ bool netd_control_xfer_cb(uint8_t rhport, uint8_t stage, tusb_control_request_t default: return false; } - } - break; + break; - case TUSB_REQ_TYPE_CLASS: { + case TUSB_REQ_TYPE_CLASS: TU_VERIFY(ncm_interface.itf_num == request->wIndex, false); - switch (request->bRequest) { + TU_LOG3(" TUSB_REQ_TYPE_CLASS: %d\n", request->bRequest); - case NCM_GET_NTB_PARAMETERS: { + if (request->bRequest == NCM_GET_NTB_PARAMETERS) { // transfer NTB parameters to host. // TODO can one assume, that tud_control_xfer() succeeds? TU_LOG3(" NCM_GET_NTB_PARAMETERS\n"); @@ -991,13 +1012,6 @@ bool netd_control_xfer_cb(uint8_t rhport, uint8_t stage, tusb_control_request_t } break; - // unsupported request - default: - return false ; - - } - } - break; // unsupported request default: return false ;