diff options
Diffstat (limited to 'net/net.c')
| -rw-r--r-- | net/net.c | 25 |
1 files changed, 2 insertions, 23 deletions
@@ -1086,7 +1086,7 @@ NetReceive(uchar *inpkt, int len) if ((ip->ip_hl_v & 0x0f) > 0x05) return; /* Check the Checksum of the header */ - if (!NetCksumOk((uchar *)ip, IP_HDR_SIZE / 2)) { + if (!ip_checksum_ok((uchar *)ip, IP_HDR_SIZE)) { debug("checksum bad\n"); return; } @@ -1291,27 +1291,6 @@ common: /**********************************************************************/ int -NetCksumOk(uchar *ptr, int len) -{ - return !((NetCksum(ptr, len) + 1) & 0xfffe); -} - - -unsigned -NetCksum(uchar *ptr, int len) -{ - ulong xsum; - ushort *p = (ushort *)ptr; - - xsum = 0; - while (len-- > 0) - xsum += *p++; - xsum = (xsum & 0xffff) + (xsum >> 16); - xsum = (xsum & 0xffff) + (xsum >> 16); - return xsum & 0xffff; -} - -int NetEthHdrSize(void) { ushort myvlanid; @@ -1410,7 +1389,7 @@ void net_set_udp_header(uchar *pkt, IPaddr_t dest, int dport, int sport, net_set_ip_header(pkt, dest, NetOurIP); ip->ip_len = htons(IP_UDP_HDR_SIZE + len); ip->ip_p = IPPROTO_UDP; - ip->ip_sum = ~NetCksum((uchar *)ip, IP_HDR_SIZE >> 1); + ip->ip_sum = compute_ip_checksum(ip, IP_HDR_SIZE); ip->udp_src = htons(sport); ip->udp_dst = htons(dport); |