/* * Copyright (C) 2010 - 2019 Xilinx, Inc. * Copyright (C) 2021 WangHuachen. * All rights reserved. * * Redistribution and use in source and binary forms, with or without modification, * are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * 3. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY * OF SUCH DAMAGE. * * This file is part of the lwIP TCP/IP stack. * */ #include #include #include #include "lwipopts.h" #include "xlwipconfig.h" #include "lwip/opt.h" #include "lwip/def.h" #include "lwip/mem.h" #include "lwip/pbuf.h" #include "lwip/sys.h" #include "lwip/stats.h" #include "lwip/igmp.h" #include "netif/etharp.h" #include "netif/xemacpsif.h" #include "netif/xadapter.h" #include "netif/xpqueue.h" #include "xparameters.h" // #include "xscugic.h" #include "xemacps.h" #if LWIP_IPV6 #include "lwip/ethip6.h" #endif #ifdef SYS_ARCH_DECL_PROTECT #undef SYS_ARCH_DECL_PROTECT #endif #define SYS_ARCH_DECL_PROTECT(lev) rt_base_t lev; #ifdef SYS_ARCH_PROTECT #undef SYS_ARCH_PROTECT #endif #define SYS_ARCH_PROTECT(lev) lev = rt_hw_interrupt_disable(); #ifdef SYS_ARCH_UNPROTECT #undef SYS_ARCH_UNPROTECT #endif #define SYS_ARCH_UNPROTECT(lev) rt_hw_interrupt_enable(lev); /* Define those to better describe your network interface. */ #define IFNAME0 't' #define IFNAME1 'e' #if LWIP_IGMP static err_t xemacpsif_mac_filter_update (struct netif *netif, ip_addr_t *group, u8_t action); static u8_t xemacps_mcast_entry_mask = 0; #endif #if LWIP_IPV6 && LWIP_IPV6_MLD static err_t xemacpsif_mld6_mac_filter_update (struct netif *netif, ip_addr_t *group, u8_t action); static u8_t xemacps_mld6_mcast_entry_mask; #endif XEmacPs_Config *mac_config; struct netif *NetIf; #if defined(OS_IS_FREERTOS) && defined(__arm__) && !defined(ARMR5) int32_t lExpireCounter = 0; #define RESETRXTIMEOUT 10 #endif /* * this function is always called with interrupts off * this function also assumes that there are available BD's */ err_t _unbuffered_low_level_output(xemacpsif_s *xemacpsif, struct pbuf *p) { XStatus status = 0; #if ETH_PAD_SIZE pbuf_header(p, -ETH_PAD_SIZE); /* drop the padding word */ #endif status = emacps_sgsend(xemacpsif, p); if (status != XST_SUCCESS) { #if LINK_STATS lwip_stats.link.drop++; #endif } #if ETH_PAD_SIZE pbuf_header(p, ETH_PAD_SIZE); /* reclaim the padding word */ #endif #if LINK_STATS lwip_stats.link.xmit++; #endif /* LINK_STATS */ return ERR_OK; } /* * low_level_output(): * * Should do the actual transmission of the packet. The packet is * contained in the pbuf that is passed to the function. This pbuf * might be chained. * */ static err_t low_level_output(struct netif *netif, struct pbuf *p) { SYS_ARCH_DECL_PROTECT(lev); err_t err; s32_t freecnt; XEmacPs_BdRing *txring; struct xemac_s *xemac = (struct xemac_s *)(netif->state); xemacpsif_s *xemacpsif = (xemacpsif_s *)(xemac->state); SYS_ARCH_PROTECT(lev); /* check if space is available to send */ freecnt = is_tx_space_available(xemacpsif); if (freecnt <= 5) { txring = &(XEmacPs_GetTxRing(&xemacpsif->emacps)); process_sent_bds(xemacpsif, txring); } if (is_tx_space_available(xemacpsif)) { _unbuffered_low_level_output(xemacpsif, p); err = ERR_OK; } else { #if LINK_STATS lwip_stats.link.drop++; #endif rt_kprintf("pack dropped, no space\r\n"); err = ERR_MEM; } SYS_ARCH_UNPROTECT(lev); return err; } /* * low_level_input(): * * Should allocate a pbuf and transfer the bytes of the incoming * packet from the interface into the pbuf. * */ static struct pbuf * low_level_input(struct netif *netif) { struct xemac_s *xemac = (struct xemac_s *)(netif->state); xemacpsif_s *xemacpsif = (xemacpsif_s *)(xemac->state); struct pbuf *p; /* see if there is data to process */ if (pq_qlength(xemacpsif->recv_q) == 0) return NULL; /* return one packet from receive q */ p = (struct pbuf *)pq_dequeue(xemacpsif->recv_q); return p; } /* * xemacpsif_output(): * * This function is called by the TCP/IP stack when an IP packet * should be sent. It calls the function called low_level_output() to * do the actual transmission of the packet. * */ static err_t xemacpsif_output(struct netif *netif, struct pbuf *p, const ip_addr_t *ipaddr) { /* resolve hardware address, then send (or queue) packet */ return etharp_output(netif, p, ipaddr); } /* * xemacpsif_input(): * * This function should be called when a packet is ready to be read * from the interface. It uses the function low_level_input() that * should handle the actual reception of bytes from the network * interface. * * Returns the number of packets read (max 1 packet on success, * 0 if there are no packets) * */ s32_t xemacpsif_input(struct netif *netif) { struct eth_hdr *ethhdr; struct pbuf *p; SYS_ARCH_DECL_PROTECT(lev); #ifdef OS_IS_FREERTOS while (1) #endif { /* move received packet into a new pbuf */ SYS_ARCH_PROTECT(lev); p = low_level_input(netif); SYS_ARCH_UNPROTECT(lev); /* no packet could be read, silently ignore this */ if (p == NULL) { return 0; } /* points to packet payload, which starts with an Ethernet header */ ethhdr = p->payload; #if LINK_STATS lwip_stats.link.recv++; #endif /* LINK_STATS */ switch (htons(ethhdr->type)) { /* IP or ARP packet? */ case ETHTYPE_IP: case ETHTYPE_ARP: #if LWIP_IPV6 /*IPv6 Packet?*/ case ETHTYPE_IPV6: #endif #if PPPOE_SUPPORT /* PPPoE packet? */ case ETHTYPE_PPPOEDISC: case ETHTYPE_PPPOE: #endif /* PPPOE_SUPPORT */ /* full packet send to tcpip_thread to process */ if (netif->input(p, netif) != ERR_OK) { LWIP_DEBUGF(NETIF_DEBUG, ("xemacpsif_input: IP input error\r\n")); pbuf_free(p); p = NULL; } break; default: pbuf_free(p); p = NULL; break; } } return 1; } #if defined(OS_IS_FREERTOS) && defined(__arm__) && !defined(ARMR5) void vTimerCallback( TimerHandle_t pxTimer ) { /* Do something if the pxTimer parameter is NULL */ configASSERT(pxTimer); lExpireCounter++; /* If the timer has expired 100 times then reset RX */ if(lExpireCounter >= RESETRXTIMEOUT) { lExpireCounter = 0; xemacpsif_resetrx_on_no_rxdata(NetIf); } } #endif static err_t low_level_init(struct netif *netif) { UINTPTR mac_address = (UINTPTR)(netif->state); struct xemac_s *xemac; xemacpsif_s *xemacpsif; u32 dmacrreg; s32_t status = XST_SUCCESS; NetIf = netif; xemacpsif = mem_malloc(sizeof *xemacpsif); if (xemacpsif == NULL) { LWIP_DEBUGF(NETIF_DEBUG, ("xemacpsif_init: out of memory\r\n")); return ERR_MEM; } xemac = mem_malloc(sizeof *xemac); if (xemac == NULL) { LWIP_DEBUGF(NETIF_DEBUG, ("xemacpsif_init: out of memory\r\n")); return ERR_MEM; } xemac->state = (void *)xemacpsif; xemac->topology_index = xtopology_find_index(mac_address); xemac->type = xemac_type_emacps; xemacpsif->send_q = NULL; xemacpsif->recv_q = pq_create_queue(); if (!xemacpsif->recv_q) return ERR_MEM; /* maximum transfer unit */ #ifdef ZYNQMP_USE_JUMBO netif->mtu = XEMACPS_MTU_JUMBO - XEMACPS_HDR_SIZE; #else netif->mtu = XEMACPS_MTU - XEMACPS_HDR_SIZE; #endif #if LWIP_IGMP netif->igmp_mac_filter = xemacpsif_mac_filter_update; #endif #if LWIP_IPV6 && LWIP_IPV6_MLD netif->mld_mac_filter = xemacpsif_mld6_mac_filter_update; #endif netif->flags = NETIF_FLAG_BROADCAST | NETIF_FLAG_ETHARP | NETIF_FLAG_LINK_UP; #if LWIP_IPV6 && LWIP_IPV6_MLD netif->flags |= NETIF_FLAG_MLD6; #endif #if LWIP_IGMP netif->flags |= NETIF_FLAG_IGMP; #endif /* obtain config of this emac */ mac_config = (XEmacPs_Config *)xemacps_lookup_config((unsigned)(UINTPTR)netif->state); #if EL1_NONSECURE /* Request device to indicate that this library is using it */ if (mac_config->BaseAddress == VERSAL_EMACPS_0_BASEADDR) { Xil_Smc(PM_REQUEST_DEVICE_SMC_FID, DEV_GEM_0, 1, 0, 100, 1, 0, 0); } if (mac_config->BaseAddress == VERSAL_EMACPS_0_BASEADDR) { Xil_Smc(PM_REQUEST_DEVICE_SMC_FID, DEV_GEM_1, 1, 0, 100, 1, 0, 0); } #endif status = XEmacPs_CfgInitialize(&xemacpsif->emacps, mac_config, mac_config->BaseAddress); if (status != XST_SUCCESS) { xil_printf("In %s:EmacPs Configuration Failed....\r\n", __func__); } /* initialize the mac */ init_emacps(xemacpsif, netif); dmacrreg = XEmacPs_ReadReg(xemacpsif->emacps.Config.BaseAddress, XEMACPS_DMACR_OFFSET); dmacrreg = dmacrreg | (0x00000010); XEmacPs_WriteReg(xemacpsif->emacps.Config.BaseAddress, XEMACPS_DMACR_OFFSET, dmacrreg); #if defined(OS_IS_FREERTOS) && defined(__arm__) && !defined(ARMR5) /* Freertos tick is 10ms by default; set period to the same */ xemac->xTimer = xTimerCreate("Timer", 10, pdTRUE, ( void * ) 1, vTimerCallback); if (xemac->xTimer == NULL) { xil_printf("In %s:Timer creation failed....\r\n", __func__); } else { if(xTimerStart(xemac->xTimer, 0) != pdPASS) { xil_printf("In %s:Timer start failed....\r\n", __func__); } } #endif setup_isr(xemac); init_dma(xemac); start_emacps(xemacpsif); /* replace the state in netif (currently the emac baseaddress) * with the mac instance pointer. */ netif->state = (void *)xemac; return ERR_OK; } void HandleEmacPsError(struct xemac_s *xemac) { xemacpsif_s *xemacpsif; s32_t status = XST_SUCCESS; u32 dmacrreg; SYS_ARCH_DECL_PROTECT(lev); SYS_ARCH_PROTECT(lev); xemacpsif = (xemacpsif_s *)(xemac->state); free_txrx_pbufs(xemacpsif); status = XEmacPs_CfgInitialize(&xemacpsif->emacps, mac_config, mac_config->BaseAddress); if (status != XST_SUCCESS) { xil_printf("In %s:EmacPs Configuration Failed....\r\n", __func__); } /* initialize the mac */ init_emacps_on_error(xemacpsif, NetIf); dmacrreg = XEmacPs_ReadReg(xemacpsif->emacps.Config.BaseAddress, XEMACPS_DMACR_OFFSET); dmacrreg = dmacrreg | (0x01000000); XEmacPs_WriteReg(xemacpsif->emacps.Config.BaseAddress, XEMACPS_DMACR_OFFSET, dmacrreg); setup_isr(xemac); init_dma(xemac); start_emacps(xemacpsif); SYS_ARCH_UNPROTECT(lev); } void HandleTxErrors(struct xemac_s *xemac) { xemacpsif_s *xemacpsif; u32 netctrlreg; SYS_ARCH_DECL_PROTECT(lev); SYS_ARCH_PROTECT(lev); xemacpsif = (xemacpsif_s *)(xemac->state); netctrlreg = XEmacPs_ReadReg(xemacpsif->emacps.Config.BaseAddress, XEMACPS_NWCTRL_OFFSET); netctrlreg = netctrlreg & (~XEMACPS_NWCTRL_TXEN_MASK); XEmacPs_WriteReg(xemacpsif->emacps.Config.BaseAddress, XEMACPS_NWCTRL_OFFSET, netctrlreg); free_onlytx_pbufs(xemacpsif); clean_dma_txdescs(xemac); netctrlreg = XEmacPs_ReadReg(xemacpsif->emacps.Config.BaseAddress, XEMACPS_NWCTRL_OFFSET); netctrlreg = netctrlreg | (XEMACPS_NWCTRL_TXEN_MASK); XEmacPs_WriteReg(xemacpsif->emacps.Config.BaseAddress, XEMACPS_NWCTRL_OFFSET, netctrlreg); SYS_ARCH_UNPROTECT(lev); } #if LWIP_IPV6 && LWIP_IPV6_MLD static u8_t xemacpsif_ip6_addr_ismulticast(ip6_addr_t* ip_addr) { if(ip6_addr_ismulticast_linklocal(ip_addr)|| ip6_addr_ismulticast_iflocal(ip_addr) || ip6_addr_ismulticast_adminlocal(ip_addr)|| ip6_addr_ismulticast_sitelocal(ip_addr) || ip6_addr_ismulticast_orglocal(ip_addr) || ip6_addr_ismulticast_global(ip_addr)) { /*Return TRUE if IPv6 is Multicast type*/ return TRUE; } else { return FALSE; } } static void xemacpsif_mld6_mac_hash_update (struct netif *netif, u8_t *ip_addr, u8_t action) { u8_t multicast_mac_addr[6]; struct xemac_s *xemac = (struct xemac_s *) (netif->state); xemacpsif_s *xemacpsif = (xemacpsif_s *) (xemac->state); XEmacPs_BdRing *txring; txring = &(XEmacPs_GetTxRing(&xemacpsif->emacps)); multicast_mac_addr[0] = LL_IP6_MULTICAST_ADDR_0; multicast_mac_addr[1] = LL_IP6_MULTICAST_ADDR_1; multicast_mac_addr[2] = ip_addr[12]; multicast_mac_addr[3] = ip_addr[13]; multicast_mac_addr[4] = ip_addr[14]; multicast_mac_addr[5] = ip_addr[15]; /* Wait till all sent packets are acknowledged from HW */ while(txring->HwCnt); SYS_ARCH_DECL_PROTECT(lev); SYS_ARCH_PROTECT(lev); /* Stop Ethernet */ XEmacPs_Stop(&xemacpsif->emacps); if (action == NETIF_ADD_MAC_FILTER) { /* Set Mulitcast mac address in hash table */ XEmacPs_SetHash(&xemacpsif->emacps, multicast_mac_addr); } else if (action == NETIF_DEL_MAC_FILTER) { /* Remove Mulitcast mac address in hash table */ XEmacPs_DeleteHash(&xemacpsif->emacps, multicast_mac_addr); } /* Reset DMA */ reset_dma(xemac); /* Start Ethernet */ XEmacPs_Start(&xemacpsif->emacps); SYS_ARCH_UNPROTECT(lev); } static err_t xemacpsif_mld6_mac_filter_update (struct netif *netif, ip_addr_t *group, u8_t action) { u8_t temp_mask; unsigned int i; u8_t * ip_addr = (u8_t *) group; if(!(xemacpsif_ip6_addr_ismulticast((ip6_addr_t*) ip_addr))) { LWIP_DEBUGF(NETIF_DEBUG, ("%s: The requested MAC address is not a multicast address.\r\n", __func__)); LWIP_DEBUGF(NETIF_DEBUG, ("Multicast address add operation failure !!\r\n")); return ERR_ARG; } if (action == NETIF_ADD_MAC_FILTER) { for (i = 0; i < XEMACPS_MAX_MAC_ADDR; i++) { temp_mask = (0x01) << i; if ((xemacps_mld6_mcast_entry_mask & temp_mask) == temp_mask) { continue; } xemacps_mld6_mcast_entry_mask |= temp_mask; /* Update mac address in hash table */ xemacpsif_mld6_mac_hash_update(netif, ip_addr, action); LWIP_DEBUGF(NETIF_DEBUG, ("%s: Multicast MAC address successfully added.\r\n", __func__)); return ERR_OK; } LWIP_DEBUGF(NETIF_DEBUG, ("%s: No multicast address registers left.\r\n", __func__)); LWIP_DEBUGF(NETIF_DEBUG, ("Multicast MAC address add operation failure !!\r\n")); return ERR_MEM; } else if (action == NETIF_DEL_MAC_FILTER) { for (i = 0; i < XEMACPS_MAX_MAC_ADDR; i++) { temp_mask = (0x01) << i; if ((xemacps_mld6_mcast_entry_mask & temp_mask) != temp_mask) { continue; } xemacps_mld6_mcast_entry_mask &= (~temp_mask); /* Update mac address in hash table */ xemacpsif_mld6_mac_hash_update(netif, ip_addr, action); LWIP_DEBUGF(NETIF_DEBUG, ("%s: Multicast MAC address successfully removed.\r\n", __func__)); return ERR_OK; } LWIP_DEBUGF(NETIF_DEBUG, ("%s: No multicast address registers present with\r\n", __func__)); LWIP_DEBUGF(NETIF_DEBUG, ("the requested Multicast MAC address.\r\n")); LWIP_DEBUGF(NETIF_DEBUG, ("Multicast MAC address removal failure!!.\r\n")); return ERR_MEM; } return ERR_ARG; } #endif #if LWIP_IGMP static void xemacpsif_mac_hash_update (struct netif *netif, u8_t *ip_addr, u8_t action) { u8_t multicast_mac_addr[6]; struct xemac_s *xemac = (struct xemac_s *) (netif->state); xemacpsif_s *xemacpsif = (xemacpsif_s *) (xemac->state); XEmacPs_BdRing *txring; txring = &(XEmacPs_GetTxRing(&xemacpsif->emacps)); multicast_mac_addr[0] = 0x01; multicast_mac_addr[1] = 0x00; multicast_mac_addr[2] = 0x5E; multicast_mac_addr[3] = ip_addr[1] & 0x7F; multicast_mac_addr[4] = ip_addr[2]; multicast_mac_addr[5] = ip_addr[3]; /* Wait till all sent packets are acknowledged from HW */ while(txring->HwCnt); SYS_ARCH_DECL_PROTECT(lev); SYS_ARCH_PROTECT(lev); /* Stop Ethernet */ XEmacPs_Stop(&xemacpsif->emacps); if (action == IGMP_ADD_MAC_FILTER) { /* Set Mulitcast mac address in hash table */ XEmacPs_SetHash(&xemacpsif->emacps, multicast_mac_addr); } else if (action == IGMP_DEL_MAC_FILTER) { /* Remove Mulitcast mac address in hash table */ XEmacPs_DeleteHash(&xemacpsif->emacps, multicast_mac_addr); } /* Reset DMA */ reset_dma(xemac); /* Start Ethernet */ XEmacPs_Start(&xemacpsif->emacps); SYS_ARCH_UNPROTECT(lev); } static err_t xemacpsif_mac_filter_update (struct netif *netif, ip_addr_t *group, u8_t action) { u8_t temp_mask; unsigned int i; u8_t * ip_addr = (u8_t *) group; if ((ip_addr[0] < 224) && (ip_addr[0] > 239)) { LWIP_DEBUGF(NETIF_DEBUG, ("%s: The requested MAC address is not a multicast address.\r\n", __func__)); LWIP_DEBUGF(NETIF_DEBUG, ("Multicast address add operation failure !!\r\n")); return ERR_ARG; } if (action == IGMP_ADD_MAC_FILTER) { for (i = 0; i < XEMACPS_MAX_MAC_ADDR; i++) { temp_mask = (0x01) << i; if ((xemacps_mcast_entry_mask & temp_mask) == temp_mask) { continue; } xemacps_mcast_entry_mask |= temp_mask; /* Update mac address in hash table */ xemacpsif_mac_hash_update(netif, ip_addr, action); LWIP_DEBUGF(NETIF_DEBUG, ("%s: Multicast MAC address successfully added.\r\n", __func__)); return ERR_OK; } if (i == XEMACPS_MAX_MAC_ADDR) { LWIP_DEBUGF(NETIF_DEBUG, ("%s: No multicast address registers left.\r\n", __func__)); LWIP_DEBUGF(NETIF_DEBUG, ("Multicast MAC address add operation failure !!\r\n")); return ERR_MEM; } } else if (action == IGMP_DEL_MAC_FILTER) { for (i = 0; i < XEMACPS_MAX_MAC_ADDR; i++) { temp_mask = (0x01) << i; if ((xemacps_mcast_entry_mask & temp_mask) != temp_mask) { continue; } xemacps_mcast_entry_mask &= (~temp_mask); /* Update mac address in hash table */ xemacpsif_mac_hash_update(netif, ip_addr, action); LWIP_DEBUGF(NETIF_DEBUG, ("%s: Multicast MAC address successfully removed.\r\n", __func__)); return ERR_OK; } if (i == XEMACPS_MAX_MAC_ADDR) { LWIP_DEBUGF(NETIF_DEBUG, ("%s: No multicast address registers present with\r\n", __func__)); LWIP_DEBUGF(NETIF_DEBUG, ("the requested Multicast MAC address.\r\n")); LWIP_DEBUGF(NETIF_DEBUG, ("Multicast MAC address removal failure!!.\r\n")); return ERR_MEM; } } return ERR_OK; } #endif /* * xemacpsif_init(): * * Should be called at the beginning of the program to set up the * network interface. It calls the function low_level_init() to do the * actual setup of the hardware. * */ err_t xemacpsif_init(struct netif *netif) { #if LWIP_SNMP /* ifType ethernetCsmacd(6) @see RFC1213 */ netif->link_type = 6; /* your link speed here */ netif->link_speed = ; netif->ts = 0; netif->ifinoctets = 0; netif->ifinucastpkts = 0; netif->ifinnucastpkts = 0; netif->ifindiscards = 0; netif->ifoutoctets = 0; netif->ifoutucastpkts = 0; netif->ifoutnucastpkts = 0; netif->ifoutdiscards = 0; #endif netif->name[0] = IFNAME0; netif->name[1] = IFNAME1; netif->output = xemacpsif_output; netif->linkoutput = low_level_output; #if LWIP_IPV6 netif->output_ip6 = ethip6_output; #endif low_level_init(netif); return ERR_OK; } /* * xemacpsif_resetrx_on_no_rxdata(): * * Should be called by the user at regular intervals, typically * from a timer (100 msecond). This is to provide a SW workaround * for the HW bug (SI #692601). Please refer to the function header * for the function resetrx_on_no_rxdata in xemacpsif_dma.c to * know more about the SI. * */ void xemacpsif_resetrx_on_no_rxdata(struct netif *netif) { struct xemac_s *xemac = (struct xemac_s *)(netif->state); xemacpsif_s *xemacpsif = (xemacpsif_s *)(xemac->state); resetrx_on_no_rxdata(xemacpsif); }