cksum
uint8 cksum = 0;
cksum += buff[*len];
err = ll_send_byte_uf(st, cksum);
uint8 cksum = 0;
cksum = 0;
cksum += byte;
unsigned cksum, rom_cksum, idx;
cksum = *(u_int16_t *) &sc->tulip_enaddr[0];
cksum *= 2;
if (cksum > 65535) cksum -= 65535;
cksum += *(u_int16_t *) &sc->tulip_enaddr[2];
if (cksum > 65535) cksum -= 65535;
cksum *= 2;
if (cksum > 65535) cksum -= 65535;
cksum += *(u_int16_t *) &sc->tulip_enaddr[4];
if (cksum >= 65535) cksum -= 65535;
if (cksum != rom_cksum)
uint16_t cksum;
cksum = 0;
cksum += sc->eeprom[i];
cksum = 0xBABA - cksum;
if (cksum != sc->eeprom[(1 << sc->eeprom_size) - 1])
cksum, sc->eeprom[(1 << sc->eeprom_size) - 1]);
uint16_t cksum;
cksum = 0;
cksum += sc->eeprom[i];
cksum = 0xBABA - cksum;
fxp_write_eeprom(sc, &cksum, i, 1);
i, sc->eeprom[i], cksum);
sc->eeprom[i] = cksum;
uint16_t cksum; /* checksum (starting with BD_REV 2) */
iph->ip_sum = cksum((unsigned short*)datagram, iph->ip_len >> 1);
udp->uh_sum = cksum((u_int16_t*)&pHeader, 3);