Yeah, the procedure is exactly as you descript with address setting, netifadd, etc...
IP4_ADDR(&ip, 192, 168, 100, 250); IP4_ADDR(&netmask, 255, 255, 255, 0); IP4_ADDR(&gateway, 192, 168, 100, 1); if (NULL == netif_add(&dev_netif, &ip, &netmask, &gateway, NULL, ethernetif_init, ethernet_input)) { LWIP_ASSERT("NULL == netif_add", 0); } netif_set_default(&dev_netif); netif_set_status_callback(&dev_netif, eth_cb_netif_status); netif_set_up(&dev_netif); And both output low level functions are being called (catched by breakpoint). I presume you do mean (in my case): ethernetif_output() -> etharp_output ethernetif_linkoutput -> gmac_low_level_output as they are set in netif: netif->output = etharp_output; netif->linkoutput = gmac_low_level_output; ________________________________________ From: lwip-users [lwip-users-bounces+inderjit.singh=evidente...@nongnu.org] on behalf of Sergio R. Caprile [scapr...@gmail.com] Sent: 04 June 2018 18:18 To: lwip-users@nongnu.org Subject: Re: [lwip-users] tcp_connection (no SYN packet on server side) OK, so it seems you are correctly calling lwIP in the loop, and your networking parameters look good. However, I failed to ask how do you setup your netif. You don't tell. You should do something like this before actually calling tcp_connect(): IP4_ADDR(&gw, 192,168,100,1); IP4_ADDR(&ipaddr, 192,168,100,250); IP4_ADDR(&netmask, 255,255,255,0); lwip_init(); netif_add(&netif, &ipaddr, &netmask, &gw, perhaps NULL, ethernetif_init, ethernet_input); netif_set_default(&netif); Where your ethernetif_init() will properly init stuff... netif->output = etharp_output; netif->linkoutput = ethernetif_linkoutput;//driveroutputfunction Can you fire a breakpoint at your ethernetif_output() and ethernetif_linkoutput? _______________________________________________ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users
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