TCPOPT_SACK
case TCPOPT_SACK:
(TCPOPT_SACK << 8) |
if (opcode == TCPOPT_SACK
if (op[0] == TCPOPT_SACK &&
sack_a = cake_get_tcpopt(tcph_a, TCPOPT_SACK, &oplen_a);
sack_b = cake_get_tcpopt(tcph_b, TCPOPT_SACK, &oplen_b);
case TCPOPT_SACK: /* stricter checking performed later */