GSS_OID_MAX_LEN
#define decode_secinfo_maxsz (op_decode_hdr_maxsz + 1 + ((NFS_MAX_SECFLAVORS * (16 + GSS_OID_MAX_LEN)) / 4))
if (oid_len > GSS_OID_MAX_LEN)
(4 + XDR_QUADLEN(GSS_OID_MAX_LEN))) * sizeof(__be32);
u8 data[GSS_OID_MAX_LEN];
.mech.len = GSS_OID_MAX_LEN,