diff options
Diffstat (limited to 'firmware/zpu/lib/net_common.c')
| -rw-r--r-- | firmware/zpu/lib/net_common.c | 28 |
1 files changed, 26 insertions, 2 deletions
diff --git a/firmware/zpu/lib/net_common.c b/firmware/zpu/lib/net_common.c index 42e365393..9b75006d3 100644 --- a/firmware/zpu/lib/net_common.c +++ b/firmware/zpu/lib/net_common.c @@ -1,5 +1,5 @@ /* - * Copyright 2009-2011 Ettus Research LLC + * Copyright 2009-2012 Ettus Research LLC * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -374,6 +374,22 @@ send_arp_reply(struct arp_eth_ipv4 *req, eth_mac_addr_t our_mac) send_pkt(t, ETHERTYPE_ARP, &reply, sizeof(reply), 0, 0, 0, 0); } +void net_common_send_arp_request(const struct ip_addr *addr){ + struct arp_eth_ipv4 req _AL4; + req.ar_hrd = ARPHRD_ETHER; + req.ar_pro = ETHERTYPE_IPV4; + req.ar_hln = sizeof(eth_mac_addr_t); + req.ar_pln = sizeof(struct ip_addr); + req.ar_op = ARPOP_REQUEST; + memcpy(req.ar_sha, ethernet_mac_addr(), sizeof(eth_mac_addr_t)); + memcpy(req.ar_sip, get_ip_addr(), sizeof(struct ip_addr)); + memset(req.ar_tha, 0x00, sizeof(eth_mac_addr_t)); + memcpy(req.ar_tip, addr, sizeof(struct ip_addr)); + + //send the request with a broadcast ethernet mac address + send_pkt(BCAST_MAC_ADDR, ETHERTYPE_ARP, &req, sizeof(req), 0, 0, 0, 0); +} + void send_gratuitous_arp(void){ struct arp_eth_ipv4 req _AL4; req.ar_hrd = ARPHRD_ETHER; @@ -415,7 +431,15 @@ handle_arp_packet(struct arp_eth_ipv4 *p, size_t size) || p->ar_hln != 6 || p->ar_pln != 4) return; - + + if (p->ar_op == ARPOP_REPLY){ + struct ip_addr ip_addr; + memcpy(&ip_addr, p->ar_sip, sizeof(ip_addr)); + eth_mac_addr_t mac_addr; + memcpy(&mac_addr, p->ar_sha, sizeof(mac_addr)); + arp_cache_update(&ip_addr, &mac_addr); + } + if (p->ar_op != ARPOP_REQUEST) return; |