static int lo_txpoll(FAR struct net_driver_s *dev) { FAR struct lo_driver_s *priv = (FAR struct lo_driver_s *)dev->d_private; /* Loop while there is data "sent", i.e., while d_len > 0. That should be * the case upon entry here and while the processing of the IPv4/6 packet * generates a new packet to be sent. Sending, of course, just means * relaying back through the network for this driver. */ while (priv->lo_dev.d_len > 0) { NETDEV_TXPACKETS(&priv->lo_dev); NETDEV_RXPACKETS(&priv->lo_dev); #ifdef CONFIG_NET_PKT /* When packet sockets are enabled, feed the frame into the packet tap */ pkt_input(&priv->lo_dev); #endif /* We only accept IP packets of the configured type and ARP packets */ #ifdef CONFIG_NET_IPv4 if ((IPv4BUF->vhl & IP_VERSION_MASK) == IPv4_VERSION) { nllvdbg("IPv4 frame\n"); NETDEV_RXIPV4(&priv->lo_dev); ipv4_input(&priv->lo_dev); } else #endif #ifdef CONFIG_NET_IPv6 if ((IPv6BUF->vtc & IP_VERSION_MASK) == IPv6_VERSION) { nllvdbg("Iv6 frame\n"); NETDEV_RXIPV6(&priv->lo_dev); ipv6_input(&priv->lo_dev); } else #endif { ndbg("WARNING: Unrecognized packet type dropped: %02x\n", IPv4BUF->vhl); NETDEV_RXDROPPED(&priv->lo_dev); priv->lo_dev.d_len = 0; } priv->lo_txdone = true; NETDEV_TXDONE(&priv->lo_dev); } return 0; }
static void bcmf_receive(FAR struct bcmf_dev_s *priv) { struct bcmf_frame_s *frame; // wlinfo("Entry\n"); do { /* Request frame buffer from bus interface */ frame = bcmf_bdc_rx_frame(priv); if (frame == NULL) { /* No more frame to process */ break; } if (!priv->bc_bifup) { /* Interface down, drop frame */ priv->bus->free_frame(priv, frame); continue; } priv->bc_dev.d_buf = frame->data; priv->bc_dev.d_len = frame->len - (uint32_t)(frame->data - frame->base); wlinfo("Got frame %p %d\n", frame, priv->bc_dev.d_len); #ifdef CONFIG_NET_PKT /* When packet sockets are enabled, feed the frame into the packet tap */ pkt_input(&priv->bc_dev); #endif /* We only accept IP packets of the configured type and ARP packets */ #ifdef CONFIG_NET_IPv4 if (BUF->type == HTONS(ETHTYPE_IP)) { ninfo("IPv4 frame\n"); NETDEV_RXIPV4(&priv->bc_dev); /* Handle ARP on input then give the IPv4 packet to the network * layer */ arp_ipin(&priv->bc_dev); ipv4_input(&priv->bc_dev); /* If the above function invocation resulted in data that should be * sent out on the network, the field d_len will set to a value > 0. */ if (priv->bc_dev.d_len > 0) { /* Update the Ethernet header with the correct MAC address */ #ifdef CONFIG_NET_IPv6 if (IFF_IS_IPv4(priv->bc_dev.d_flags)) #endif { arp_out(&priv->bc_dev); } #ifdef CONFIG_NET_IPv6 else { neighbor_out(&kel->bc_dev); } #endif /* And send the packet */ bcmf_transmit(priv, frame); } else { /* Release RX frame buffer */ priv->bus->free_frame(priv, frame); } } else #endif #ifdef CONFIG_NET_IPv6 if (BUF->type == HTONS(ETHTYPE_IP6)) { ninfo("Iv6 frame\n"); NETDEV_RXIPV6(&priv->bc_dev); /* Give the IPv6 packet to the network layer */ ipv6_input(&priv->bc_dev); /* If the above function invocation resulted in data that should be * sent out on the network, the field d_len will set to a value > 0. */ if (priv->bc_dev.d_len > 0) { /* Update the Ethernet header with the correct MAC address */ #ifdef CONFIG_NET_IPv4 if (IFF_IS_IPv4(priv->bc_dev.d_flags)) { arp_out(&priv->bc_dev); } else #endif #ifdef CONFIG_NET_IPv6 { neighbor_out(&priv->bc_dev); } #endif /* And send the packet */ bcmf_transmit(priv, frame); } else { /* Release RX frame buffer */ priv->bus->free_frame(priv, frame); } } else #endif #ifdef CONFIG_NET_ARP if (BUF->type == htons(ETHTYPE_ARP)) { arp_arpin(&priv->bc_dev); NETDEV_RXARP(&priv->bc_dev); /* If the above function invocation resulted in data that should be * sent out on the network, the field d_len will set to a value > 0. */ if (priv->bc_dev.d_len > 0) { bcmf_transmit(priv, frame); } else { /* Release RX frame buffer */ priv->bus->free_frame(priv, frame); } } else #endif { wlerr("ERROR: RX dropped\n"); NETDEV_RXDROPPED(&priv->bc_dev); priv->bus->free_frame(priv, frame); } } while (1); /* While there are more packets to be processed */ }
static void misoc_net_receive(FAR struct misoc_net_driver_s *priv) { uint8_t rxslot; uint32_t rxlen; do { /* Check for errors and update statistics */ /* Check if the packet is a valid size for the network buffer * configuration. */ /* Find rx slot */ rxslot = ethmac_sram_writer_slot_read(); /* Get rx len */ rxlen = ethmac_sram_writer_length_read(); /* Copy the data data from the hardware to priv->misoc_net_dev.d_buf. Set * amount of data in priv->misoc_net_dev.d_len * * NOTE: These memcpy's could be avoided by simply setting the d_buf * pointer to the rx*_buf containing the received data. Some additional * buffer management logic would also be required. */ misoc_flush_dcache(); if (rxslot) { memcpy(priv->misoc_net_dev.d_buf, priv->rx1_buf, rxlen); } else { memcpy(priv->misoc_net_dev.d_buf, priv->rx0_buf, rxlen); } /* Clear event pending */ ethmac_sram_writer_ev_pending_write(1); priv->misoc_net_dev.d_len = rxlen; #ifdef CONFIG_NET_PKT /* When packet sockets are enabled, feed the frame into the packet tap */ pkt_input(&priv->misoc_net_dev); #endif /* We only accept IP packets of the configured type and ARP packets */ #ifdef CONFIG_NET_IPv4 if (BUF->type == HTONS(ETHTYPE_IP)) { ninfo("IPv4 frame\n"); NETDEV_RXIPV4(&priv->misoc_net_dev); /* Handle ARP on input then give the IPv4 packet to the network * layer */ arp_ipin(&priv->misoc_net_dev); ipv4_input(&priv->misoc_net_dev); /* If the above function invocation resulted in data that should be * sent out on the network, the field d_len will set to a value > 0. */ if (priv->misoc_net_dev.d_len > 0) { /* Update the Ethernet header with the correct MAC address */ #ifdef CONFIG_NET_IPv6 if (IFF_IS_IPv4(priv->misoc_net_dev.d_flags)) #endif { arp_out(&priv->misoc_net_dev); } #ifdef CONFIG_NET_IPv6 else { neighbor_out(&kel->misoc_net_dev); } #endif /* And send the packet */ misoc_net_transmit(priv); } } else #endif #ifdef CONFIG_NET_IPv6 if (BUF->type == HTONS(ETHTYPE_IP6)) { ninfo("Iv6 frame\n"); NETDEV_RXIPV6(&priv->misoc_net_dev); /* Give the IPv6 packet to the network layer */ ipv6_input(&priv->misoc_net_dev); /* If the above function invocation resulted in data that should be * sent out on the network, the field d_len will set to a value > 0. */ if (priv->misoc_net_dev.d_len > 0) { /* Update the Ethernet header with the correct MAC address */ #ifdef CONFIG_NET_IPv4 if (IFF_IS_IPv4(priv->misoc_net_dev.d_flags)) { arp_out(&priv->misoc_net_dev); } else #endif #ifdef CONFIG_NET_IPv6 { neighbor_out(&priv->misoc_net_dev); } #endif /* And send the packet */ misoc_net_transmit(priv); } } else #endif #ifdef CONFIG_NET_ARP if (BUF->type == htons(ETHTYPE_ARP)) { arp_arpin(&priv->misoc_net_dev); NETDEV_RXARP(&priv->misoc_net_dev); /* If the above function invocation resulted in data that should be * sent out on the network, the field d_len will set to a value > 0. */ if (priv->misoc_net_dev.d_len > 0) { misoc_net_transmit(priv); } } #endif else { NETDEV_RXDROPPED(&priv->misoc_net_dev); } } while (ethmac_sram_writer_ev_pending_read() & ETHMAC_EV_SRAM_WRITER); }
static int slip_rxtask(int argc, FAR char *argv[]) { FAR struct slip_driver_s *priv; unsigned int index = *(argv[1]) - '0'; net_lock_t flags; int ch; nerr("index: %d\n", index); DEBUGASSERT(index < CONFIG_NET_SLIP_NINTERFACES); /* Get our private data structure instance and wake up the waiting * initialization logic. */ priv = &g_slip[index]; slip_semgive(priv); /* Loop forever */ for (; ; ) { /* Wait for the next character to be available on the input stream. */ ninfo("Waiting...\n"); ch = slip_getc(priv); /* Ignore any input that we receive before the interface is up. */ if (!priv->bifup) { continue; } /* We have something... * * END characters may appear at packet boundaries BEFORE as well as * after the beginning of the packet. This is normal and expected. */ if (ch == SLIP_END) { priv->rxlen = 0; } /* Otherwise, we are in danger of being out-of-sync. Apparently the * leading END character is optional. Let's try to continue. */ else { priv->rxbuf[0] = (uint8_t)ch; priv->rxlen = 1; } /* Copy the data data from the hardware to priv->rxbuf until we put * together a whole packet. */ slip_receive(priv); NETDEV_RXPACKETS(&priv->dev); /* All packets are assumed to be IP packets (we don't have a choice.. * there is no Ethernet header containing the EtherType). So pass the * received packet on for IP processing -- but only if it is big * enough to hold an IP header. */ if (priv->rxlen >= IPv4_HDRLEN) { NETDEV_RXIPV4(&priv->dev); /* Handle the IP input. Get exclusive access to the network. */ slip_semtake(priv); priv->dev.d_buf = priv->rxbuf; priv->dev.d_len = priv->rxlen; flags = net_lock(); ipv4_input(&priv->dev); /* If the above function invocation resulted in data that should * be sent out on the network, the field d_len will set to a * value > 0. NOTE that we are transmitting using the RX buffer! */ if (priv->dev.d_len > 0) { slip_transmit(priv); kill(priv->txpid, SIGALRM); } net_unlock(flags); slip_semgive(priv); } else { NETDEV_RXERRORS(&priv->dev); } } /* We won't get here */ return OK; }
static void skel_receive(FAR struct skel_driver_s *priv) { do { /* Check for errors and update statistics */ /* Check if the packet is a valid size for the network buffer * configuration. */ /* Copy the data data from the hardware to priv->sk_dev.d_buf. Set * amount of data in priv->sk_dev.d_len */ #ifdef CONFIG_NET_PKT /* When packet sockets are enabled, feed the frame into the packet tap */ pkt_input(&priv->sk_dev); #endif /* We only accept IP packets of the configured type and ARP packets */ #ifdef CONFIG_NET_IPv4 if (BUF->type == HTONS(ETHTYPE_IP)) { nllvdbg("IPv4 frame\n"); NETDEV_RXIPV4(&priv->sk_dev); /* Handle ARP on input then give the IPv4 packet to the network * layer */ arp_ipin(&priv->sk_dev); ipv4_input(&priv->sk_dev); /* If the above function invocation resulted in data that should be * sent out on the network, the field d_len will set to a value > 0. */ if (priv->sk_dev.d_len > 0) { /* Update the Ethernet header with the correct MAC address */ #ifdef CONFIG_NET_IPv6 if (IFF_IS_IPv4(priv->sk_dev.d_flags)) #endif { arp_out(&priv->sk_dev); } #ifdef CONFIG_NET_IPv6 else { neighbor_out(&kel->sk_dev); } #endif /* And send the packet */ skel_transmit(priv); } } else #endif #ifdef CONFIG_NET_IPv6 if (BUF->type == HTONS(ETHTYPE_IP6)) { nllvdbg("Iv6 frame\n"); NETDEV_RXIPV6(&priv->sk_dev); /* Give the IPv6 packet to the network layer */ ipv6_input(&priv->sk_dev); /* If the above function invocation resulted in data that should be * sent out on the network, the field d_len will set to a value > 0. */ if (priv->sk_dev.d_len > 0) { /* Update the Ethernet header with the correct MAC address */ #ifdef CONFIG_NET_IPv4 if (IFF_IS_IPv4(priv->sk_dev.d_flags)) { arp_out(&priv->sk_dev); } else #endif #ifdef CONFIG_NET_IPv6 { neighbor_out(&priv->sk_dev); } #endif /* And send the packet */ skel_transmit(priv); } } else #endif #ifdef CONFIG_NET_ARP if (BUF->type == htons(ETHTYPE_ARP)) { arp_arpin(&priv->sk_dev); NETDEV_RXARP(&priv->sk_dev); /* If the above function invocation resulted in data that should be * sent out on the network, the field d_len will set to a value > 0. */ if (priv->sk_dev.d_len > 0) { skel_transmit(priv); } } #endif else { NETDEV_RXDROPPED(&priv->sk_dev); } } while (); /* While there are more packets to be processed */ }