if_maxlinkhdr = 40;
#endif
#else
- /* 14 for ethernet + 40 */
- if_maxlinkhdr = 14 + 40;
+ /* 2 for alignment, 14 for ethernet, 40 for TCP/IP */
+ if_maxlinkhdr = 2 + 14 + 40;
#endif
if_mtu = 1500;
if_mru = 1500;
m = m_get();
if (!m)
return;
- m->m_len = pkt_len;
- memcpy(m->m_data, pkt, pkt_len);
+ /* Note: we add to align the IP header */
+ m->m_len = pkt_len + 2;
+ memcpy(m->m_data + 2, pkt, pkt_len);
- m->m_data += ETH_HLEN;
- m->m_len -= ETH_HLEN;
+ m->m_data += 2 + ETH_HLEN;
+ m->m_len -= 2 + ETH_HLEN;
ip_input(m);
break;