no pbuf buffer copy

just need the callback to be independent

src/lwip.h

@@ -21,7 +21,7 @@ extern struct pbuf *out_pkt;
 extern bool link_up;
 static void  lwip_service_traffic(void);
 void printline(int cdc,char string[],int len);
-extern int chan;
+//extern int chan;
 
 extern char connect_ssid[190], connect_ssid_decode[95], connect_password[190], connect_password_decode[95], retry_ms[6], enc_type[1], wifi_configuration[450], 	wifi_configuration_last[450];
 extern int wifi_congfig_len;

src/main.c

@@ -19,7 +19,7 @@ uint8_t rndis_mac[6] = { 0x20, 0x89, 0x84, 0x6A, 0x96, 0xAA };
 int wifi_congfig_len=0;
 int eth_frame_send_success;
 
-int chan = 0;
+//int chan = 0;
 
 void printline(int cdc,char string[],int len){
 	char buf[2048];
@@ -81,6 +81,7 @@ static int scan_result(void *env, const cyw43_ev_scan_result_t *result) {
 
 void core1(){
     //user_init_lwip();
+	cdc_rndis_init(rndis_mac);
     lwip_init();
 	multicore_lockout_victim_init();
 	//int wifi_conn_error;
@@ -143,14 +144,13 @@ int main(void)
 	cyw43_hal_get_mac(0, rndis_mac);
 	//sscanf(wifi_configuration,"s_a: %s p_a: %s r_a: %s c_a: %s ",connect_ssid,connect_password,retry_ms,enc_type);
 
-    cdc_rndis_init(rndis_mac);
 
 	multicore_launch_core1(core1);
 
 	absolute_time_t scan_time = nil_time;
     bool scan_in_progress = false;
 	next_wifi_try = nil_time;
-	chan = dma_claim_unused_channel(false);
+	//chan = dma_claim_unused_channel(false);
 	while (1) {
 		if (!link_up) {
 			if (absolute_time_diff_us(get_absolute_time(), scan_time) < 0) {

src/wifi_tx.c

@@ -76,7 +76,8 @@ void cyw43_cb_process_ethernet(void *cb_data, int itf, size_t len, const uint8_t
 		out_pkt = pbuf_alloc(PBUF_RAW, len, PBUF_POOL);
 		//memcpy(out_pkt->payload, buf, len);
 		//pbuf_take(out_pkt, buf, len);
-
+		/*
+		int transfer = (len%2==0)?(len/2):((len+1)/2);
 		dma_channel_config c = dma_channel_get_default_config(chan);
 		channel_config_set_transfer_data_size(&c, DMA_SIZE_16);
 		channel_config_set_read_increment(&c, true);
@@ -87,20 +88,21 @@ void cyw43_cb_process_ethernet(void *cb_data, int itf, size_t len, const uint8_t
 			&c,              // The configuration we just created
 			out_pkt->payload,// The initial write address
 			buf,             // The initial read address
-			(len/2)+1,             // Number of transfers; in this case each is 1 byte.
+			transfer,             // Number of transfers; in this case each is 1 byte.
 			true             // Start immediately.
 		);
-
+		*/
+		out_pkt->payload = buf;
 		int ret = usbd_rndis_eth_tx(out_pkt);
 		if (0 != ret) {
 			ret = ERR_BUF;
 		}
 		// We could choose to go and do something else whilst the DMA is doing its
 		// thing. In this case the processor has nothing else to do, so we just
 		// wait for the DMA to finish.
-		dma_channel_wait_for_finish_blocking(chan);
+		//dma_channel_wait_for_finish_blocking(chan);
 
 		pbuf_free(out_pkt);
-		out_pkt = NULL;
+		//out_pkt = NULL;
 	//}
 }