SB_MAX
u_long sb_max = SB_MAX; /* [I] patchable */
{ UNPCTL_RECVSPACE, &unpst_recvspace, 0, SB_MAX },
{ UNPCTL_SENDSPACE, &unpst_sendspace, 0, SB_MAX },
{ UNPCTL_RECVSPACE, &unpsq_recvspace, 0, SB_MAX },
{ UNPCTL_SENDSPACE, &unpsq_sendspace, 0, SB_MAX },
{ UNPCTL_RECVSPACE, &unpdg_recvspace, 0, SB_MAX },
{ UNPCTL_SENDSPACE, &unpdg_sendspace, 0, SB_MAX },
{ DIVERTCTL_RECVSPACE, &divert_recvspace, 0, SB_MAX },
{ DIVERTCTL_SENDSPACE, &divert_sendspace, 0, SB_MAX },
{ UDPCTL_RECVSPACE, &udp_recvspace, 0, SB_MAX },
{ UDPCTL_SENDSPACE, &udp_sendspace, 0, SB_MAX },