1284   struct tftphdr * volatile rdp;     /* data buffer */  in recvtftp()  local
1288   rdp = w_init();  in recvtftp()
1311       n = sread(peer, rdp, PKTSIZE);  in recvtftp()
1321       rdp->th_opcode = ntohs((unsigned short)rdp->th_opcode);  in recvtftp()
1322       rdp->th_block = ntohs(rdp->th_block);  in recvtftp()
1323       if (rdp->th_opcode == opcode_ERROR)  in recvtftp()
1325       if (rdp->th_opcode == opcode_DATA) {  in recvtftp()
1326         if (rdp->th_block == recvblock) {  in recvtftp()
1331         if (rdp->th_block == (recvblock-1))  in recvtftp()
1336     size = writeit(test, &rdp, (int)(n - 4), pf->f_convert);  in recvtftp()
1362       rdp->th_opcode == opcode_DATA &&        /* and got a data block */  in recvtftp()
1363       recvblock == rdp->th_block) {           /* then my last ack was lost */  in recvtftp()