pkthdr
struct ringbuffer pkthdr;
eth_pio_read(pktoff, (char *)&pkthdr, 4);
memcpy(&pkthdr, bus_to_virt(eth_rmem + pktoff), 4);
pktoff += sizeof(pkthdr);
len = pkthdr.len - 4;
if ((pkthdr.status & D8390_RSTAT_PRX) == 0 || len < ETH_ZLEN
next = pkthdr.next; /* frame number of next packet */
hdrp = (p_tx_pkt_header_t)&pkthdrp->pkthdr;
tx_pkt_header_t pkthdr;
tmp_hdrp.pkthdr.value = 0;
hdrp = (p_tx_pkt_header_t)&pkthdrp->pkthdr;
struct pkthdr MH_pkthdr; /* M_PKTHDR set */
#define MHLEN (MLEN - sizeof (struct pkthdr)) /* data len w/pkthdr */
tx_pkt_header_t pkthdr;